MOXA EtherDevice™ Switch
EDS-726 Series User’s Manual
First Edition, July 2005
Moxa Networking Co., Ltd.
Tel:
+886-2-2910-1230
Fax: +886-2-2910-1231
Web: www.moxa.com
MOXA Technical Support
Worldwide:
The Americas
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Table of Contents
Overview .............................................................................................................................. 1-2
Package Checklist................................................................................................................. 1-2
Features ................................................................................................................................ 1-2
Industrial Networking Capability.............................................................................. 1-2
Featured Functions...................................................................................3-1
Overview .............................................................................................................................. 3-2
Port............................................................................................................................ 3-6
System File Update—By Local Import/Export....................................................... 3-11
Using Communication Redundancy................................................................................... 3-19
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Configuring IGMP Snooping.................................................................................. 3-45
Configuring GMRP................................................................................................. 3-48
Configuring Bandwidth Management..................................................................... 3-49
Configuring Relay Warning.................................................................................... 3-59
Relay Alarm List..................................................................................................... 3-60
Configuring Line-Swap Fast Recovery................................................................... 3-61
Using Diagnosis.................................................................................................................. 3-63
Using Monitor .................................................................................................................... 3-64
Monitor by Port....................................................................................................... 3-65
Using the MAC Address Table........................................................................................... 3-65
Using Event Log................................................................................................................. 3-66
EDS Configurator GUI...............................................................................4-1
Broadcast Search .................................................................................................................. 4-2
Search by IP address............................................................................................................. 4-3
Upgrade Firmware................................................................................................................ 4-3
Modify IPAddress................................................................................................................ 4-4
Export Configuration............................................................................................................ 4-5
Import Configuration............................................................................................................ 4-6
Unlock Server....................................................................................................................... 4-7
MIB Groups............................................................................................... A-1
Specifications........................................................................................... B-1
Service Information.................................................................................. C-1
Problem Report Form...........................................................................................................C-3
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1
Chapter
1
Introduction
Welcome to MOXA EtherDevice Switch EDS-726 Series, the modular managed Gigabit Ethernet
Switch designed especially for connecting Ethernet-enabled devices in industrial field
applications.
The following topics are covered in this chapter:
‰
‰
‰
Overview
Package Checklist
Features
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EDS-726 Series User’s Manual
Introduction
Overview
Network planning is easy and flexible with EDS-726, which has a modular design that lets you
install up to 2 Gigabit ports and 24 fast Ethernet ports in one switch. Choose from three 1-port
Gigabit modules with copper or fiber optic connectors, and eight 4-port Fast Ethernet modules
with copper or fiber optic (SC/ST) connectors. EDS-726 is suitable for any industrial application,
and leaves room for future expansion. Features include an angled LED display for convenient
viewing from any vertical angle, pluggable CompactFlash for configuration back-up, network
redundancy, and intelligent network management. EDS-726 provides more flexibility, reliability,
and application-oriented functions to meet the demands of any harsh industrial application.
Package Checklist
MOXA EDS-726 is shipped with the following items. If any of these items is missing or damaged,
please contact your customer service representative for assistance.
y
y
y
1 MOXA EDS-726 modular switch system or Interface Module
Hardware Installation Guide
CD-ROM with User’s Manual and Windows Utility (for EDS-726 modular switch system
only)
y
y
Moxa Product Warranty booklet
RJ45 to DB9 Console port cable (for EDS-726 modular switch system only)
NOTE: Please notify your Moxa sales representative if any of the above items is missing or
damaged.
Features
Industrial Networking Capability
y
y
y
y
y
y
y
Redundant Gigabit Ethernet Ring Capability (recovery time < 300 ms at full load)
IGMP Snooping and GMRP for filtering multicast traffic from industrial Ethernet Protocols
Supports IEEE 802.1Q VLAN and GVRP protocol to ease network planning
Supports QoS—IEEE 802.1p/1Q and TOS/DiffServ to increase determinism
Supports 802.3ad, LACP for optimum bandwidth utilization
Supports IEEE 802.1X and SSL to enhance network security
SNMP V1/V2C/V3 for different levels of network management security
Designed for Industrial Applications
y
Modular Managed Switch with up to 26 ports. Choose from the following modules:
¾ Three 1-port Gigabit modules, with 10/100/1000BaseT(X) (RJ45 connector), or
1000BaseSX/LX (SC connector)
¾ Eight 4-port fast Ethernet Modules with a combination of 10/100BaseT(X) (RJ45
connectors) and 100BaseFX (Single/Multimode, SC/ST connectors)
y
y
y
y
y
y
CompactFlash card for upgrading firmware and loading or saving configurations
Long-haul transmission distance of 40 km or 80 km
Redundant, dual DC power inputs
IP 30, rugged high-strength metal case
DIN-Rail or panel mounting ability
Bandwidth management to prevent unpredictable network status
1-2
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EDS-726 Series User’s Manual
Introduction
y
y
y
y
y
y
Lock port for authorized MAC address access only
Port mirroring for online debugging
Automatic warning by exception through email, relay output
Digital inputs to integrate a sensor and alarm with an IP network
Automatic recovery of connected device IP addresses
Line-swap fast recovery
Useful Utility and Remote Configuration
y
y
Configurable by Web browser, Telnet/Serial console, Windows utility
Send ping commands to identify network segment integrity
Recommended Software and Accessories
y
y
y
EDS-SNMP OPC Server Pro
DR-4524, DR-75-24, DR-120-24 DIN-Rail 24 VDC Power Supply Series
WK-32: Wall Mounting Kit
1-3
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2
Chapter
2
Getting Started
This chapter explains how to access EDS-726 for the first time. There are three ways to access the
switch: serial console, Telnet console, and web browser. The serial console connection method,
which requires using a short serial cable to connect EDS-726 to a PC’s COM port, can be used if
you do not know EDS-726’s IP address. The Telnet console and web browser connection methods
can be used to access EDS-726 over an Ethernet LAN, or over the Internet.
The following topics are covered:
‰
‰
‰
‰
RS-232 Console Configuration (115200, None, 8, 1, VT100)
Configuration by Telnet Console
Configuration by Web Browser
Disabling Telnet and Browser Access
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EDS-726 Series User’s Manual
Getting Started
RS-232 Console Configuration (115200, None, 8, 1, VT100)
Connection Caution!
NOTE
1. You cannot connect to EDS-726 simultaneously by serial console and Telnet.
2. You can connect to EDS-726 simultaneously by web browser and serial console, or by web
browser and Telnet.
However, we strongly suggest that you do NOT use more than one connection method at the
same time. Following this advice will allow you to maintain better control over the
configuration of your EDS-726.
We recommend using MOXA PComm Terminal Emulator, which can be downloaded free of
charge from Moxa’s website.
NOTE
Before running PComm Terminal Emulator, use an RJ45 to DB9-F (or RJ45 to DB25-F) cable to
connect EDS-726’s RS-232 Console port to your PC’s COM port (generally COM1 or COM2,
depending on how your system is set up).
After installing PComm Terminal Emulator, take the following steps to access the RS-232 Console
utility.
1. From the Windows desktop, click on Start Æ Programs Æ PCommLite2.5 Æ Terminal
Emulator.
2. Select Open under Port Manager to open a new connection.
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Getting Started
3. The Communication Parameter page of the Property window opens. Select the appropriate
COM port for Console Connection, 115200 for Baud Rate, 8 for Data Bits, None for Parity,
and 1 for Stop Bits.
4. Click on the Terminal tab, and select VT100 for Terminal Type. Click on OK to continue.
5. Type 1 to select ansi/VT100 terminal type, and then press Enter.
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Getting Started
6. The Console login screen will appear. Press Enter to open the Account pop-up selector and
then select either admin or user. Use the keyboard’s down arrow to move the cursor to the
Password field, enter the Console Password (this is the same as the Web Browser password;
leave the Password field blank if a console password has not been set), and then press Enter.
7. EDS-726’s Main Menu will be displayed. (NOTE: To modify the appearance of the PComm
Terminal Emulator window, select Font… under the Edit menu, and then choose the desired
formatting options.)
8. After entering the Main Menu, use the following keys to move the cursor, and to select
options.
Key
Function
Move the onscreen cursor
Display & select options
Toggle options
Up/Down/Left/Right arrows, or Tab
Enter
Space
Esc
Previous Menu
2-4
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EDS-726 Series User’s Manual
Getting Started
Configuration by Telnet Console
You may use Telnet to access EDS-726’s console utility over a network. To be able to access
EDS’s functions over the network (by Telnet or Web Browser) from a PC host that is connected to
the same LAN as EDS-726, you need to make sure that the PC host and EDS-726 are on the same
logical subnetwork. To do this, check your PC host’s IP address and subnet mask. By default,
EDS-726’s IP address is 192.168.127.253 and EDS-726’s subnet mask is 255.255.0.0 (for a Class
B network). If you do not change these values, and your PC host’s subnet mask is 255.255.0.0,
then its IP address must have the form 192.168.xxx.xxx. On the other hand, if your PC host’s
subnet mask is 255.255.255.0, then its IP address must have the form 192.168.127.xxx.
To use EDS-726’s management and monitoring functions from a PC host connected to the same
LAN as EDS-726, you must make sure that the PC host and EDS-726 are on the same logical
subnetwork.
NOTE
NOTE
NOTE
Before accessing the console utility via Telnet, first connect one of EDS-726’s RJ45 Ethernet
ports to your Ethernet LAN, or directly to your PC’s Ethernet NIC. You can establish a
connection with either a straight-through or cross-over Ethernet cable.
EDS-726’s default IP is 192.168.127.253.
Follow the steps below to access the console utility via Telnet.
1. Click on Start Æ Run, and then telnet to EDS-726’s IP address from the Windows Run
window. (You may also issue the telnet command from the MS-DOS prompt.)
2. Type 1 to choose ansi/vt100, and then press Enter.
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Getting Started
3. The Console login screen will appear. Press Enter to open the Account pop-up selector and
then select either admin or user. Use the keyboard’s down arrow to move the cursor to the
Password field, enter the Console Password (this is the same as the Web Browser password;
leave the Password field blank if a console password has not been set), and then press Enter.
4. When the Main Menu of EDS-726’s console utility opens, click on Terminal Æ
references… from the menu at the top of the window.
5. When the Terminal Preferences window opens, make sure that the VT100 Arrows box is
checked.
The Telnet Console looks and operates in precisely the same manner as the RS-232 Console.
NOTE
Configuration by Web Browser
MOXA EDS-726’s web browser interface provides a convenient way to modify the switch’s
configuration and access the built-in monitoring and network administration functions. You may
use either Internet Explorer or Netscape to access EDS-726.
To use EDS-726’s management and monitoring functions from a PC host connected to the same
LAN as EDS-726, you must make sure that the PC host and EDS-726 are on the same logical
subnetwork.
NOTE
If EDS-726 is configured for other VLAN settings, you must make sure your PC host is on the
management VLAN. Refer to the “Configuring 802.1Q VLAN” in Chapter 3 for the VLAN
settings.
NOTE
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Getting Started
Before accessing EDS-726’s web browser interface, first connect one of its RJ45 Ethernet ports
to your Ethernet LAN, or directly to your PC’s Ethernet NIC. You can establish a connection
with either a straight-through or cross-over Ethernet cable.
NOTE
MOXA EDS-726’s default IP is 192.168.127.253.
NOTE
Follow the steps below to access EDS-726’s web browser interface.
1. Open Internet Explorer and type EDS-726’s IP address in the Address field. Press Enter to
establish the connection.
2. The web login page will open. Select the login account (Admin or User) and enter the
Password (this is the same as the Console password), and then click Login to continue. Leave
the Password field blank if a password has not been set.
By default, EDS-726’s password is not set (i.e., is blank).
NOTE
You may need to wait a few moments for the web page to be downloaded to your computer. Use
the menu tree on the left side of the window to open the function pages to access each of MOXA
EtheDevice Switch’s functions.
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Getting Started
Disabling Telnet and Browser Access
If you are connecting EDS-726 to a public network, but do not intend to use its management
functions over the network, then we suggest disabling both Telnet Console and Web
Configuration from the RS-232 Console’s Basic Settings Æ System Identification page, as
shown in the following figure.
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3
Chapter
3
Featured Functions
This chapter explains how to access EDS-726’s various configuration, monitoring, and
administration functions. There are three ways to access these functions: RS-232 console, Telnet
console, and web browser. The serial console connection method, which requires using a short
serial cable to connect EDS-726 to a PC’s COM port, can be used if you do not know EDS-726’s
IP address. The Telnet console and web browser connection methods can be used to access
EDS-726 over an Ethernet LAN, or over the Internet.
The Web Console is the most user-friendly way to configure EDS-726. In this chapter, we use the
Web Console interface to introduce the functions. There are only a few differences between the
Web Console, Serial Console, and Telnet Console.
The following topics are covered in this chapter:
‰
‰
‰
‰
‰
‰
‰
‰
‰
‰
‰
‰
‰
‰
‰
‰
‰
Overview
Configuring Basic Settings
Using Port Trunking
Configuring SNMP
Using Communication Redundancy
Using Traffic Prioritization
Using Virtual LAN
Using Multicast Filtering
Using Bandwidth Management
Using Port Access Control
Using Auto Warning
Using Line-Swap-Fast-Recovery
Using Set Device IP
Using Diagnosis
Using Monitor
Using the MAC Address Table
Using Event Log
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EDS-726 Series User’s Manual
Featured Functions
Overview
A real-time simulation of the front-view of your EDS-726 is shown on the Overview web page.
You should see the same view that you would see if you were standing right in front of the
EDS-726. Position the cursor over the toggle switch and then click the left mouse button to see the
different mode statuses of the interface module LED. You can use this figure to view and update
status of each EDS-726 on the network.
Active ports will be shown as green in the figure. Inactive ports are shown
as black.
P3
P1
P4
P2
PWR
Note that the module name shown in the figure should match the module
used with the switch.
3
1
4
2
IM-4TX
Configuring Basic Settings
The Basic Settings group includes the most commonly used settings required by administrators to
maintain and control EDS-726.
System Identification
The system identification items are displayed at the top of the web page, and will be included in
alarm emails. Setting system identification items makes it easier to identify the different switches
connected to your network.
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Featured Functions
Switch Name
Setting
Description
Factory Default
Max. 30
This option is useful for specifying the role or Industrial Redundant Switch
Characters
application of different EDS-726 units.
E.g., Factory Switch 1.
[Serial No. of this switch]
Switch Location
Setting
Description
Factory Default
Max. 80
Characters
To specify the location of different EDS-726
units. E.g., production line 1.
Switch Location
Switch Description
Setting
Description
Factory Default
Max. 30
Characters
Use this space to record a more a detailed
description of the EDS-726 unit.
None
Maintainer Contact Info
Setting
Description
Factory Default
Max. 30
Characters
To provide information about whom to contact None
in order to resolve problems. Use this space to
record contact information of the person
responsible for maintaining this EDS-726.
Password
EDS-726 provides two levels of access privilege: admin privilege gives read/write access of all
EDS-726 configuration parameters, and user privilege provides read access only. You will be able
to view the configuration, but will not be able to make modifications.
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Featured Functions
ATTENTION
EDS-726’s default Password is not set (i.e., is blank). If a Password is already set, then you will
be required to type the Password when logging into either the RS-232 Console, Telnet Console,
or Web Browser interface.
Account
Setting
Description
Factory Default
admin
user
“admin” privilege allows the user to modify all
EDS-726 configurations.
admin
“user” privilege only allows viewing EDS-726
configurations.
Password
Setting
Old Password
Description
Factory Default
None
Type current password when changing the
(Max. 16 Characters) password
New Password
Type new password when changing the password None
(Max. 16 Characters)
Retype Password
If you type a new password in the Password field, None
(Max. 16 Characters) you will be required to retype the password in the
Retype new password field before updating the
new password.
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Featured Functions
Accessible IP
Moxa EDS-726 uses an IP address-based filtering method to control access to EDS-726 units.
Accessible IP Settings allows you to add or remove “Legal” remote host IP addresses to prevent
unauthorized access. Access to EDS-726 is controlled by IP address. That is, if a host’s IP address
is in the accessible IP table, then the host will be allowed access to the EDS-726. You can allow
one of the following cases by setting this parameter:
y
Only one host with the specified IP address can access the EDS-726
E.g., enter “192.168.1.1/255.255.255.255” to allow access to just the IP address 192.168.1.1.
y
Any host on a specific subnetwork can access the EDS-726
E.g., enter “192.168.1.0/255.255.255.0” to allow access to all IPs on the subnetwork defined
by this IP address/subnet mask combination.
y
Any host can access the EDS-726
Disable this function by not checkmarking the “Enable the accessible IP list” checkbox.
The following table shows additional configuration examples:
Allowable Hosts
Input format
Any host
Disable
192.168.1.120
192.168.1.120 / 255.255.255.255
192.168.1.0 / 255.255.255.0
192.168.0.0 / 255.255.0.0
192.168.1.0 / 255.255.255.128
192.168.1.128 / 255.255.255.128
192.168.1.1 to 192.168.1.254
192.168.0.1 to 192.168.255.254
192.168.1.1 to 192.168.1.126
192.168.1.129 to 192.168.1.254
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Featured Functions
Port
Port settings are included to give the user control over Port Access, Port Transmission Speed,
Flow Control, and Port Type (MDI or MDIX). An explanation of each configuration item is given
below.
Enable
Setting
checked
Description
Factory Default
enabled
Allows data transmission through the port.
Immediately shuts off port access.
unchecked
ATTENTION
If a connected device or sub-network is wreaking havoc on the rest of the network, the Disable
option under Advanced Settings/Port gives the administrator a quick way to shut off access
through this port immediately.
Description
Setting
Description
Factory Default
Media type
Displays the media type for each module’s port N/A
Name
Setting
Description
Factory Default
Max. 63 Characters Specify an alias for each port, and assist the
administrator in remembering important
information about the port.
None
E.g., PLC 1
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Featured Functions
Port Transmission Speed
Setting
Description
Factory Default
Auto
Allows the port to use the IEEE 802.3u protocol
to negotiate with connected devices. The port and
connected devices will determine the best speed
for that connection.
Auto-nego
100M-Full
100M-Half
10M-Full
10M-Half
Choose one of these fixed speed options if the
opposing Ethernet device has trouble
auto-negotiating for line speed.
FDX Flow Control
This setting enables or disables the flow control capability of this port when the “port transmission
speed” setting is in “auto” mode. The final result will be determined by the “auto” process
between EDS-726 and connected devices.
Setting
Enable
Description
Factory Default
Enables flow control for this port when in
auto-nego mode.
Enable
Disable
Disables flow control for this port when in
auto-nego mode.
Port Type
Setting
Description
Factory Default
Auto
Allows the port to auto detect the port type of the
opposing Ethernet device and change the port
type accordingly.
Auto
MDI
Choose the MDI or MDIX option if the opposing
Ethernet device has trouble auto-negotiating for
port type.
MDIX
Network
The Network configuration allows users to modify the usual TCP/IP network parameters. An
explanation of each configuration item is given below.
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Featured Functions
Auto IP Configuration
Setting
Description
Factory Default
Disable
Set up EDS-726’s IP address manually.
By DHCP
EDS-726’s IP address will be assigned
automatically by the network’s DHCP server.
Disable
By BootP
EDS-726’s IP address will be assigned
automatically by the network’s BootP server.
Switch IP Address
Setting
Description
Factory Default
IP Address of the EDS-726 Identifies the EDS-726 on a TCP/IP network.
192.168.127.253
Switch Subnet Mask
Setting
Description
Factory Default
Subnet mask of the
EDS-726
Identifies the type of network to which the
EDS-726 is connected (e.g., 255.255.0.0 for a
Class B network, or 255.255.255.0 for a Class
C network).
255.255.255.0
Default Gateway
Setting
Description
Factory Default
Default Gateway of the
EDS-726
The IP address of the router that connects the
LAN to an outside network.
None
DNS IP Address
Setting
Description
Factory Default
1st DNS Server’s
IP Address
The IP address of the DNS Server used by your None
network. After entering the DNS Server’s IP
address, you can input EDS-726’s url (e.g.,
www.eds.company.com) in your browser’s
address field, instead of entering the IP address.
2nd DNS Server’s
IP Address
The IP address of the DNS Server used by your None
network. EDS-726 will try to locate the 2nd
DNS Server if the 1st DNS Server fails to
connect.
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Featured Functions
Time
EDS-726 has a time calibration function based on information from an NTP server or user
specified Time and Date information. Functions such as Auto warning “Email” can add real-time
information to the message.
EDS-726 does not have a real time clock. The user must update the Current Time and Current
Date to set the initial time for EDS-726 after each reboot, especially when the network doesn’t
have an Internet connection for NTP server or there is no NTP server on the LAN.
NOTE
Current Time
Setting
Description
Factory Default
User adjustable time.
The time parameter allows configuration of the 00h:00m:00s
local time in local 24-hour format.
Current Date
Setting
Description
Factory Default
User adjustable date.
The date parameter allows configuration of the 1970/01/01
local date in yyyy-mm-dd format.
System Up Time
Indicates EDS-726’s up time from the last cold start. The unit is seconds.
Time Zone
Setting
User selectable time zone The time zone setting allows conversion from GMT (Greenwich
GMT (Greenwich Mean Time) to local time. Mean Time)
Description
Factory Default
Changing the time zone will automatically correct the current time. You should configure the
time zone before setting the time.
NOTE
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Featured Functions
Time Server IP/Name
Setting
Description
Factory Default
1st Time Server IP/Name
IP or Domain address (e.g., 192.168.1.1 or
time.stdtime.gov.tw or time.nist.gov).
None
EDS-726 will try to locate the 2nd NTP Server
if the 1st NTP Server fails to connect.
2nd Time Server IP/Name
Time Server Query Period
Setting
Description
Factory Default
Query Period
This parameter determines how frequently the 600 seconds
time is updated from the NTP server.
System File Update—By Remote TFTP
MOXA EDS-726 supports saving your configuration file to a remote TFTP server or local host to
allow other EDS-726 switches to use the same configuration at a later time, or saving the Log file
for future reference. Loading pre-saved firmware or a configuration file from the TFTP server or
local host is also supported for easy upgrading or configuration of EDS-726.
TFTP Server IP/Name
Setting
Description
Factory Default
IP Address of TFTP
Server
The IP or name of the remote TFTP server. Must be None
set up before downloading or uploading files.
Configuration file path and name
Setting
Description
Factory Default
Max. 40 Characters
The path and file name of EDS-726’s configuration None
file in the TFTP server.
Firmware file path and name
Setting
Description
Factory Default
Max. 40 Characters
The path and file name of EDS-726’s firmware file. None
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Featured Functions
Log file path and name
Setting
Description
Factory Default
Max. 40 Characters
The path and file name of EDS-726’s log file
None
After setting up the desired path and file name, click on Activate to save the setting, and then click
on Download to download the prepared file from the remote TFTP server, or click on Upload to
upload the desired file to the remote TFTP server.
System File Update—By Local Import/Export
Configuration File
To export the configuration file of this EDS-726, click on Export to save it to the local host.
Log File
To export the Log file of this EDS-726, click on Export and save it to the local host.
Some operating systems will open the configuration file and log file directly in the web page. In
such cases, right click on the “Export” button to save a file.
NOTE
Upgrade Firmware
To import the firmware file of this EDS-726, click on Browse to select the firmware file already
saved on your computer. The upgrade procedure will proceed automatically after clicking on
Import.
Upload Configure Data
To import the configuration file of this EDS-726, click on Browse to select the configuration file
already saved on your computer. The upgrade procedure will proceed automatically after clicking
on Import.
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Featured Functions
System File Update—By CF Card
Setting
Description
Factory Default
Enable CF Save/Load Enable saving and loading configuration and/or
firmware from the CF card.
Unchecked
Configuration
Check to enable saving and loading the
configuration from the CF card (this option is
selected by default if Enable CF Save/Load is
checked).
N/A
N/A
Firmware
Check to enable saving and loading the firmware
from the CF card.
Factory Default
The Factory Default function is included to give users a quick way of restoring EDS-726’s
configuration settings to their factory default values. This function is available in the Console
utility (serial or Telnet) and Web Browser interface.
After activating the Factory Default function, you will need to use the default network settings to
re-establish a web-browser or Telnet connection with your EDS-726.
NOTE
Using Port Trunking
Link Aggregation allows one or more links to be aggregated together to form a Link Aggregation
Group. A MAC client can treat Link Aggregation Groups as if they were a single link.
EDS-726’s Port Trunking feature allows devices to communicate by aggregating up to four links
in parallel, with a maximum of eight ports for each link. If one of the eight ports fails, the other
seven ports will provide back up and share the traffic automatically.
Port trunking can be used to combine up to eight ports between two EDS-726 switches. If all ports
on both switch units are configured as 100BASE-TX and they are operating in full duplex, the
potential bandwidth of the connection will be 1600 Mbps.
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The Port Trunking Concept
EDS-726 allows a maximum of 4 trunk groups, with a maximum of 8 trunk ports for each trunk
group. You can configure the trunk group to be “Static” or “LACP.” Once the trunk group is set to
“LACP,” all of the ports making up that group will be set to LACP enabled. The ports in the
“Static” trunk groups, and all the non-trunk ports that do not belong to any trunk group, will be set
to LACP disabled. When the port is set to LACP enabled, it will exchange LACPDU with its link
partner, and will result in “Forwarding.” If all of the ports in the same group are “Blocked” or
“Disabled” or “Down” (link-down), the trunk group will not work, and the user will see “LACP
Failed” for that trunk group in the user interface.
EDS-726 allows you to set more than 8 ports in one trunk group. Those ports that exceed the port
limit (i.e., 8) will be set as “Standby” ports, as defined by the IEEE 802.3ad protocol. A “Standby”
port is an LACP enabled port that is attached to a trunk group, but is not functioning yet. The port
state of such ports will be listed as “Blocking.” A trunk group on “Standby” cannot be used by
another trunk group, or be activated as an individual link. The standby port will start working as a
normal trunk port whenever any other trunk port in the same group stops functioning, such as
when a port fails to transmit or receive packets due to a physical fault. EDS-726 allows a
maximum of 4 “Standby” ports for each LACP trunk group, so that a maximum of 12 ports can be
assigned to each LACP trunk group. A Static trunk group cannot have “Standby” ports. This
means that a Static trunk group can only have a maximum of 8 ports in the group.
Port Trunking applies to connections between backbone devices as well as to connections in other
network areas where traffic bottlenecks exist. Port Trunking provides the following benefits:
y
Gives you more flexibility in setting up your network connections, since the bandwidth of a
link can be expanded to 8 times the original bandwidth.
y
Provides redundancy—if one link is broken, the remaining trunked ports share the traffic
within this link. EDS-726 allows a maximum of 4 “Standby” ports for each LACP trunk group.
In another words, a maximum of 12 ports can belong to each LACP trunk group. These four
standby ports provide redundancy to a normal 8-port trunk whenever any other trunk port in
the same group does not function properly, such as when the port fails to transmit or receive
packets due to a physical fault
y
Load sharing—MAC Client traffic may be distributed across multiple links.
Keep the following points in mind when configuring port trunking:
y
y
To avoid broadcast storms or loops in your network while configuring a trunk, first disable
or disconnect all ports that you want to add to the trunk or remove from the trunk. After you
finish configuring the trunk, enable or re-connect the ports.
Up to 4 port trunking groups (designated Trk1, Trk2, Trk3, Trk4) can be used for each
EDS-726.
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y
y
Up to 8 ports can be inserted into each port trunk group. EDS-726 allows a maximum of 4
“Standby” ports for each LACP trunk group. In another words, a maximum of 12 ports can
belong to each LACP trunk group.
The same transmission speed must be assigned to all ports belonging to one port trunking
group. E.g., 100M Full, 100M Half, 10M Full, or 10M Half. The auto-negotiation function
should be disabled for these ports.
y
y
Full duplex operation only—Link Aggregation is supported only on point-to-point links with
MACs operating in full duplex mode.
Multipoint Aggregations—The mechanisms specified in this clause do not support
aggregations among more than two systems.
When you activate port trunking settings, some advanced functions will either be set to factory
default values, or disabled:
y
Port stat, such as transmitting speed, duplex, and flow control will be set to the factory
defaults.
y
y
y
y
y
y
Communication Redundancy will be set to the factory default.
802.1Q VLAN will be set to the factory default and will be disabled.
Multicast Filtering will be set to the factory default.
Port Lock will be set to the factory default and will be disabled.
Set Device IP will be set to the factory default
Mirror Port will be set to the factory default and will be disabled.
Configuring Port Trunking
The Port Trunking Settings page is used to assign ports to a Trunk Group.
Step 1: Select Trk1, Trk2, Trk3, or Trk 4 from the Trunk Group drop-down box.
Step 2: Select Static or LACP from the Trunk Type drop-down box.
Step 3: Under Member Ports and Available Ports, checkmark to select specific ports.
Step 4: Use the Up / Down buttons to add/remove designated ports to/from a trunk group.
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Trunk Group (Maximum of 4 trunk groups)
Setting Description
Factory Default
Trk1, Trk2, Trk3, Trk4 Display or designate the Trunk Type and Member
Ports for Trunk Group 1, 2, 3, or 4.
Trk1
Trunk Type
Setting
Description
Factory Default
Static
Static
Designated Moxa proprietary trunking protocol
Designated LACP (IEEE 802.3ad, Link
Aggregation Control Protocol)
Static
LACP
Member Ports/Available Ports
Setting
Description
Factory Default
Member/Available
Ports
Use Up/Down buttons to add/remove specific ports N/A
from available ports to/from trunk group.
Check box
Port
Check to designate which ports to add or remove.
Port number
Unchecked
N/A
N/A
N/A
N/A
Port description
Name
Displays the media type for each module’s port
Max. 63 Characters
Indicates the transmission speed (100M-Full,
100M-Half, 10M-Full, or 10M-Half)
Speed
Indicates if the FDX flow control of this port is
“Enabled” or “Disabled.”
N/A
N/A
N/A
FDX Flow Control
Add designated ports into trunk group from
available ports.
Up
Remove designated ports from trunk group to
available port.
Down
Trunk Table
Setting
Description
Trunk Group
Member Port
Status
Displays the Trunk Type and Trunk Group.
Display which member ports belong to the trunk group.
Success means port trunking is working properly.
Fail means port trunking is not working properly.
Standby means port trunking is working as a standby port. When there
are more than eight ports trunked as a trunking group, the 9th port will
be the standby port.
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Configuring SNMP
EDS-726 supports SNMP V1/V2c/V3. SNMP V1 and SNMP V2c use a community string match
for authentication, which means that SNMP servers access all objects with read-only or read/write
permissions using the community string public/private (default value). SNMP V3, which requires
you to select an authentication level of MD5 or SHA, is the most secure protocol. You can also
enable data encryption to enhance data security.
SNMP security modes and security levels supported by EDS-726 are shown in the following table.
Select the security mode and level that will be used to communicate between the SNMP agent and
manager.
Protocol
Version
Authentication
Type
Data
Encryption
UI Setting
Method
V1, V2c
Read
Community
Community
string
Use a community string match
for authentication
No
SNMP V1,
V2c
V1, V2c
Write/Read
Community
Community
string
Use a community string match
for authentication
No
No
Use account with admin or user
to access objects
No-Auth
No
Provides authentication based on
HMAC-MD5, or HMAC-SHA
algorithms. 8-character
passwords are the minimum
requirement for authentication.
Authentication
MD5 or SHA based on MD5 No
or SHA
SNMP V3
Provides authentication based on
HMAC-MD5 or HMAC-SHA
algorithms, and data encryption
key. 8-character passwords and a
data encryption key are the
Authentication
MD5 or SHA based on MD5
or SHA
Data encryption
key
minimum requirements for
authentication and encryption.
These parameters are configured on the SNMP page. A more detailed explanation of each
parameter is given below the figure.
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SNMP Read/Write Settings
SNMP Versions
Setting
Description
Factory Default
V1, V2c, V3, or
V1, V2c, or
V3 only
Select the SNMP protocol version used to
manage the switch.
V1, V2c
V1, V2c Read Community
Setting
Description
Factory Default
Use a community string match with a
maximum of 30 characters for
authentication. This means that the SNMP
agent accesses all objects with read-only
permissions using the community string
public.
V1, V2c Read
Community
public
V1, V2c Write/Read Community
Setting
Description
Factory Default
Uses a community string match with a
maximum of 30 characters for
authentication. This means that SNMP
servers access all objects with read/write
permissions using the community string
private.
V1, V2c
Read/Write
Community
private
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For SNMP V3, there are two levels of privilege for different accounts to access the EDS-726.
Admin privilege allows access, and authorization to read and write the MIB file. User privilege
only allows reading the MIB file, but not authorization to write.
Admin Auth. Type (for SNMP V1, V2c, V3, and V3 only)
Setting
Description
Factory Default
Use admin. account to access objects.
No authentication
No-Auth
No
No
Provide authentication based on the
HMAC-MD5 algorithms. 8-character
passwords are the minimum requirement
for authentication.
MD5-
Auth
Provide authentication based on the
HMAC-SHA algorithms. 8-character
passwords are the minimum requirement
for authentication.
SHA-
Auth
No
Admin Data Encryption Key (for SNMP V1, V2c, V3, and V3 only)
Setting
Description
Factory Default
Factory Default
8-character data encryption key is the
minimum requirement for data encryption No
(maximum of 30 characters)
Enable
Disable
No data encryption
No
User Auth. Type (for SNMP V1, V2c, V3 and V3 only)
Setting
No-Auth
Description
Use admin account or user account to
access objects. No authentication.
No
No
Provides authentication based on the
HMAC-MD5 algorithms. 8-character
passwords are the minimum requirement
for authentication.
MD5-Auth
SHA-Auth
Provides authentication based on the
HMAC-SHA algorithms. 8-character
passwords are the minimum requirement
for authentication.
No
User Data Encryption Key (for SNMP V1, V2c, V3 and V3 only)
Setting
Enable
Disable
Description
Factory Default
8-character data encryption key is the
minimum requirement for data encryption No
(maximum of 30 characters)
No data encryption
No
Trap Settings
Trap Server IP/Name
Setting
Description
Factory Default
None
Enter the IP address or name of the Trap
Server used by your network.
IP or Name
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Trap Community
Setting
Description
Factory Default
Use a community string match for
authentication (maximum of 30
characters).
character string
public
Private MIB information
Switch Object ID
Setting
Description
Factory Default
Fixed
8691.7.1
EDS-726’s enterprise value
NOTE: The Switch Object ID cannot be changed.
Using Communication Redundancy
Setting up Communication Redundancy on your network helps protect critical links against failure,
protects against network loops, and keeps network downtime at a minimum.
The Communication Redundancy function allows the user to set up redundant loops in the
network to provide a backup data transmission route in the event that a cable is inadvertently
disconnected or damaged. This is a particularly important feature for industrial applications, since
it could take several minutes to locate the disconnected or severed cable. For example, if MOXA
EDS-726 is used as a key communications component of a production line, several minutes of
downtime could cause a big loss in production and revenue. MOXA EDS-726 supports two
different protocols for this communication redundancy function—Rapid Spanning Tree Protocol
(IEEE-802.1w) and Turbo Ring.
Turbo Ring and STP/RSTP cannot both be used on the network at the same time. The table below
lists the key differences between each feature. Use this information to evaluate the benefits of each,
and then determine which features are most suitable for your network.
Turbo Ring
Ring
STP
RSTP
Topology
Ring, Mesh
Up to 30 sec.
Ring, Mesh
Up to 5 sec
Recovery Time
< 300 ms
Gigabit Ethernet Redundant Ring Capability (< 300 ms)
Ethernet has become the default data communications medium for industrial automation
applications. In fact, Ethernet is often used to integrate video, voice, and high-rate industrial
application data transfers into one network. MOXA EDS-726, which comes equipped with a
redundant Gigabit Ethernet protocol called Gigabit Turbo Ring, gives system maintainers a
convenient means of setting up a versatile yet stable Gigabit Ethernet network. With Gigabit
Turbo Ring, if any segment of the network gets disconnected, your automation system will be
back to normal in under 300 ms.
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Port trunking and Turbo Ring can be enabled simultaneously to form a backbone. Doing so will
increase the bandwidth of the backbone, and also provide redundancy. For example, suppose that
two physical ports, 1 and 2, are trunked to form trunk group Trk1, and then Trk1 is set as one
Turbo Ring path. If port 1 gets disconnected, the remaining trunked port, port 2, will share the
traffic. If port 1 and port 2 are both disconnected, Turbo Ring will create the back up path within
300 ms.
NOTE
The Turbo Ring Concept
The proprietary Turbo Ring protocol was developed by Moxa to optimize communication
redundancy and achieve a faster recovery time on the network.
Turbo Ring protocol identifies one switch as the “master” of the network, and then automatically
blocks packets from traveling through any of the network’s redundant loops. In the event that one
branch of this ring gets disconnected from the rest of the network, the Turbo Ring protocol
automatically readjusts the ring (if possible) so that the part of the network that was disconnected
reestablishes contact with the rest of the network.
Initial Setup
1. Select any two ports as redundant ports.
PWR1
P
W
R
2
F
A
U
L
T
SPEED FDX/HDX
RING COUPLER
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
STAT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
M
A
S
T
E
R
C
O
U
P
L
E
R
C
F
PORT
PORT
MODE
EtherDevice Switch
EDS-726
3
4
3
1
4
2
3
4
3
4
4
3
4
2
3
TX
RX
TX
X
TX
RX
TX
X
TX
RX
2. Connect the redundant ports to form the
Turbo Ring
1
2
1
2
1
TX
RX
X
X
IM-1GTX
IM-1GSXSC
IM-4TX
IM-4MST
IM-4MSC
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
PWR1
P
W
R
2
F
A
U
L
T
SPEED FDX/HDX
RING COUPLER
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
PWR1
P
W
R
2
F
A
U
L
T
SPEED FDX/HDX
RING COUPLER
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
AT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
STAT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
M
A
S
T
E
R
C
O
U
P
L
E
R
C
F
PORT
PORT
M
A
S
T
E
R
C
O
U
P
L
E
R
C
F
PORT
PORT
MOD
MODE
EtherDevice Switch
EDS-726
EtherDevice Switch
EDS-726
3
4
2
3
1
4
2
3
4
3
4
4
3
4
2
3
1
4
2
3
4
3
4
4
3
1
4
2
3
3
1
4
2
3
T
TX
RX
X
TX
RX
TX
RX
TX
RX
TX
RX
X
X
TX
RX
1
1
1
2
1
2
1
2
1
2
1
2
1
2
TX
TX
RX
TX
RX
TX
IM-1GTX
1GSXSC
IM-4TX
T
MSC
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
IM-1GTX
M-1GSXSC
IM-4TX
MST
IM-
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
You do not need to set the Master to use Turbo Ring. Master is only needed to identify which
segment acts as the backup path. The actual topology of the redundant ring, i.e., which segment
will be blocked, is determined by the number of EDS-726 switches that make up the ring, and
where the “Ring Master” is located.
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When the number of EDS-726 units in the Turbo Ring is even.
Master
If there are 2N EDS-726 units (an even number)
in the Turbo Ring, then the backup segment is
one of the two segments connected to the
(N+1)st EDS-726 (i.e., the EDS-726 unit directly
opposite the Master).
PWR1
P
W
R
2
F
A
U
L
T
S
P
E
E
D
F
D
X
/
H
D
X
P3
P4
P3
P4
P3
P4
P3
P4
P3
P1
P4
P2
P3
P1
P4
P2
STAT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
R
I
N
G
C
O
U
P
L
E
R
M
A
S
T
E
R
C
O
U
P
L
E
R
C
F
PORT
PORT
P1
P2
P1
P2
P1
P2
P1
P2
MODE
EtherDevice Switch
EDS-726
3
4
3
4
3
4
3
4
4
3
4
3
TX
RX
X
X
T
X
X
TX
RX
1
2
1
2
1
2
1
2
1
2
1
2
TX
RX
TX
X
IM-1GTX
IM-1GSXSC
IM-4TX
-4MST
MSC
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
PWR1
P
W
R
2
F
A
U
L
T
SPEED FDX/HDX
RING COUPLER
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
PWR1
P
W
R
2
F
A
U
L
T
SPEED FDX/HDX
RING COUPLER
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
AT
NK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
STAT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
M
A
S
T
E
R
C
O
U
P
L
E
R
C
F
PORT
PORT
M
A
S
T
E
R
C
O
U
P
L
E
R
C
F
PORT
PORT
MO
MODE
EtherDevice Switch
EDS-726
EtherDevice tch
EDS-726
3
4
3
4
3
4
3
4
4
3
4
3
1
4
2
3
4
3
4
4
3
1
4
2
3
3
1
4
2
3
TX
TX
RX
TX
X
TX
RX
TX
RX
TX
RX
TX
X
TX
RX
TX
X
TX
RX
1
1
2
1
2
1
2
1
2
1
2
1
2
TX
RX
TX
RX
T
X
IM-1GTX
-1GSXSC
IM-4TX
IM-4MST
IM-4MSC
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
IM-1GTX
IM-1GSXSC
IM-4TX
IM-4MST
IM-4MSC
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
PWR1
P
W
R
2
F
A
U
L
T
SPEED FDX/HDX
RING COUPLER
P3
P1
P4
P2
P3
P4
P2
P3
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
STAT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
M
A
S
T
E
R
C
O
U
P
L
E
R
C
F
PORT
PORT
P1
P1
MODE
EtherDevice Switch
EDS-726
3
4
3
1
4
2
3
4
3
4
4
3
4
2
3
TX
RX
TX
X
T
X
X
TX
RX
1
1
2
1
2
1
2
TX
RX
TX
X
IM-1GTX
IM-1GSXSC
IM-4TX
IM-4MST
IM-4MSC
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
When the number of EDS-726 units in the Turbo Ring is odd.
Master
If there are 2N+1 EDS-726 units (an odd
number) in the Turbo Ring, with EDS-726 units
and segments labeled counterclockwise, then
segment N+1 will serve as the backup path.
PWR1
P
W
R
2
F
A
U
L
T
S
P
E
E
D
F
D
X
/
H
D
X
P3
P4
P3
P4
P3
P4
P3
P4
P3
P1
P4
P2
P3
P1
P4
P2
STAT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
R
I
N
G
C
O
U
P
L
E
R
M
A
S
T
E
R
C
O
U
P
L
E
R
C
F
PORT
PORT
P1
P2
P1
P2
P1
P2
P1
P2
MODE
EtherDevice Switch
EDS-726
3
4
3
4
3
4
3
4
4
3
4
3
TX
RX
TX
X
TX
TX
X
TX
RX
1
2
1
2
1
2
2
1
TX
RX
X
X
IM-1GTX
IM-1GSXSC
IM-4TX
IM-4MST
IM4MSC
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
For the example shown here, N=1, and therefore
N+1=2.
PWR1
P
W
R
2
F
A
U
L
T
SPEED FDX/HDX
RING COUPLER
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
PWR1
P
W
R
2
F
A
U
L
T
SPEED FDX/HDX
RING COUPLER
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
AT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
STAT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
M
A
S
T
E
R
C
O
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P
L
E
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C
F
PORT
PORT
M
A
S
T
E
R
C
O
U
P
L
E
R
C
F
PORT
PORT
MODE
MODE
EtherDevice Switch
EDS-726
EtherDevice Switch
EDS-726
3
4
2
3
1
4
2
3
4
3
4
4
3
4
2
3
1
4
2
3
4
3
4
4
3
1
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2
3
3
1
4
2
3
TX
RX
T
X
TX
RX
TX
RX
TX
RX
T
X
TX
RX
X
X
TX
RX
1
1
1
2
1
2
1
2
1
2
1
2
1
2
TX
TX
RX
TX
RX
TX
X
IM-1GTX
-1GSXSC
IM-4TX
IM-
4MSC
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
IM-1GTX
IM-1GSXSC
IM-4TX
-4MST
I-SC
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
Segment N+1
For some systems, it may not be convenient to connect all devices in the system to make one BIG
redundant ring, since some devices could be located in a remote area. The “Ring Coupling”
function of Turbo Ring can help you separate those distributed devices into different smaller
redundant rings, but in such a way that they can still communicate with each other. The figure
below illustrates how to couple two Turbo Rings.
ATTENTION
In a VLAN environment, you must set “Redundant Port,” “Coupling Port,” and “Coupling
Control Port” as “Trunk Port,” since these ports act as the “backbone” to transmit all packets of
different VLANs to different EDS-726 units.
3-21
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Ring Coupling
Featured Functions
Switch B
PWR1
P
W
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2
F
A
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S
P
E
E
D
F
D
X
/
H
D
X
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
PWR1
P
W
R
2
F
A
U
L
T
SPEED FDX/HDX
RING COUPLER
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
STAT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
Main Path
STAT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
R
I
N
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C
O
U
P
L
E
R
M
A
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C
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P
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F
PORT
PORT
M
A
S
T
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C
O
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P
L
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C
F
PORT
PORT
MODE
MODE
EDevice Switch
EDS-726
EtherDevice Switch
EDS-726
3
4
3
4
3
4
3
4
4
3
4
2
3
1
4
3
4
3
4
4
3
4
3
3
4
2
3
TX
TX
TX
TX
TX
RX
TX
X
TX
TX
RX
TX
X
TX
RX
RX
X
RX
1
2
1
2
1
2
1
2
1
2
1
1
2
1
2
1
2
TX
RX
X
X
X
X
IM-1GTX
IM-1GSXSC
M-4TX
IM-4MST
IM-4MSC
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
IM-1GTX
M-1GSXSC
IM-4TX
IM-4MST
M-4MSC
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
Coupling
Control Port
PWR1
P
W
R
2
F
A
U
L
T
SPEED FDX/HDX
RING COUPLER
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
PWR1
P
W
R
2
F
A
U
L
T
SPEED FDX/HDX
RING COUPLER
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
STAT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
STAT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
M
A
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C
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P
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C
F
PORT
PORT
M
A
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E
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C
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P
L
E
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C
F
PORT
PORT
MODE
MODE
EtherDevice Switch
EDS-726
EtherDevice Switch
EDS-726
3
4
2
3
1
4
2
3
4
3
4
4
3
4
2
3
1
4
2
3
4
3
4
4
3
4
2
3
3
1
4
2
3
X
X
TX
RX
X
X
X
TX
RX
TX
RX
TX
RX
X
X
TX
RX
1
1
1
1
2
1
2
1
2
1
2
1
2
1
2
TX
X
TX
RX
TX
RX
TX
IM-1GTX
IM-1GSXSC
IM-4TX
MST
-4MS
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
IM-1GTX
IM-1GSXSC
IM-4TX
MST
IM-
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
Backup Path
PWR1
P
W
R
2
F
A
U
L
T
SPEED FDX/HDX
RING COUPLER
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P4
P2
P3
P4
P2
P3
P1
P4
P2
PWR1
P
W
R
2
F
A
U
L
T
SPEED FDX/HDX
LNK/ACT
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
STAT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
SAT
PWR
PWR
PWR
PWR
PWR
PWR
R
I
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P
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M
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PORT
PORT
P1
P1
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F
P
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P
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MODE
MO
EtherDevice Switch
EDS-726
EtherDevice Switch
EDS-726
3
1
4
2
3
1
4
2
3
4
3
4
4
3
1
4
2
3
1
4
2
3
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3
4
4
3
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2
3
3
1
4
2
3
TX
X
TX
RX
T
TX
RX
TX
RX
TX
RX
TX
RX
1
1
2
1
2
1
2
1
2
1
2
1
2
TX
X
TX
TX
TX
RX
IM-1GTX
M-1GSXSC
IM-4TX
MST
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
IM-1GTX
I-1GSXSC
IM-4TX
-MSC
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
Coupling Port
Switch A: "Coupler"
Switch C
To support the Ring Coupling function, select one EDS-726 (e.g., Switch A in the above figure) in
the Turbo Ring and enter the Communication Redundancy page to enable “Ring Coupling.” Select
one port as “coupling port” and then connect any port of the opposing EDS-726 (e.g., Switch C) in
the adjacent Turbo Ring. Select another port as “coupling control port,” and connect this port to
any port of the adjacent EDS-726 (e.g., Switch B) in the same Turbo Ring. The “Coupler” switch
(Switch A above) will monitor switch B’s order from the “coupling control port” to decide if the
coupling port’s backup path should be recovered.
ATTENTION
You only need to enable the “Ring Coupling” function on one EDS-726 (not on the opposing
EDS-726 or an adjacent EDS-726). The Redundant Port, Coupling Port, and Coupling Control
Port must all be assigned to different ports.
A particular EDS-726 does not need to be configured for both Ring Coupling and Ring Master.
NOTE
3-22
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Featured Functions
Configuring Turbo Ring
Use the Communication Redundancy page to configure Turbo Ring.
Now Active
This field shows which communication protocol is in use: Turbo Ring, RSTP, or neither.
Master/Slave
This field appears only when Turbo Ring mode is selected for Redundancy Protocol. It indicates if
this EDS-726 is or is not the Master of the Turbo Ring.
The user does not need to set the master to use Turbo Ring, only to assign which segment serves
as the backup path.
NOTE
The master will be determined automatically if the user does not set a dedicated master for the
Turbo Ring.
Redundant Port Status
This field indicates the current status of redundant ports. The state is “Forwarding” for normal
transmission, “Blocked” to stopped transmission if this port is the backup path, and “Link down”
for non-connection.
Ring Coupling
Indicates if the Ring Coupling function is “Enabled” or “Disabled.”
Coupling Port Status
This field indicates the current status of coupling ports. The state is “Forwarding” for normal
transmission, “Blocked” to stop transmission if this port is the backup path, and “Link down” for
non-connection.
At the bottom of the page, the user can configure this function’s “Settings.” For Turbo Ring, the
user can configure:
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Featured Functions
Redundancy Protocol
Setting
Description
Factory Default
Select this item to change to the
Turbo Ring configuration page.
Turbo Ring
None
None
RSTP (IEEE
802.1W/1D)
Select this item to change to the
RSTP configuration page.
Set as Master
Setting
Description
Factory Default
Factory Default
Enable/Disable
Select this EDS-726 as Master
None
Redundant Ports
Setting
Description
Select any port of EDS-726 to be
one of the redundant ports.
Port 7 if enabled for
Turbo Ring
1st Port
Select any port of EDS-726 to be
one of the redundant ports.
Port 8 if enabled for
Turbo Ring
2nd Port
Enable Ring Coupling
Setting
Description
Factory Default
Enable/Disable
Select this EDS-726 as Coupler
None
Coupling Ports
Setting
Description
Factory Default
Select any port of EDS-726 to be
the coupling port
Port 5 if enabled for
Ring Coupling
Coupling Port
Select any port of EDS-726 to be
the coupling control port
Port 6 if enabled for
Ring Coupling
Coupling Control Port
The STP/RSTP Concept
Spanning Tree Protocol (STP) was designed to help reduce link failures in a network, and provide
protection from loops. Networks that have a complicated architecture are prone to broadcast
storms caused by unintended loops in the network. MOXA EDS-726’s STP feature is disabled by
default. To be completely effective, you must enable RSTP/STP on every EDS-726 connected to
your network.
Rapid Spanning Tree Protocol (RSTP) implements the Spanning Tree Algorithm and Protocol
defined by IEEE Std 802.1w-2001. RSTP provides the following benefits:
y
y
The topology of a bridged network will be determined much more quickly compared to STP.
RSTP is backward compatible with STP, making it relatively easy to deploy. For example:
¾
¾
Defaults to sending 802.1D style BPDUs if packets with this format are received.
STP (802.1D) and RSTP (802.1w) can operate on different ports of the same EDS-726.
This feature is particularly helpful when EDS-726 ports connect to older equipment, such
as legacy switches.
You get essentially the same functionality with RSTP and STP. To see how the two systems differ,
see the Differences between RSTP and STP section in this chapter.
The STP protocol is part of the IEEE Std 802.1D, 1998 Edition bridge specification. The
explanation given below uses bridge instead of switch.
NOTE
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What is STP?
Featured Functions
STP (802.1D) is a bridge-based system that is used to implement parallel paths for network traffic.
STP uses a loop-detection process to:
y
y
Locate and then disable less efficient paths (i.e., paths that have a lower bandwidth).
Enable one of the less efficient paths if the most efficient path fails.
The figure below shows a network made up of three LANs separated by three bridges. Each
segment uses at most two paths to communicate with the other segments. Since this configuration
can give rise to loops, the network will overload if STP is NOT enabled.
LAN 1
Bridge B
LAN 2
Bridge A
Bridge C
LAN 3
If STP is enabled, it will detect duplicate paths and prevent, or block, one of them from forwarding
traffic. In the following example, STP determined that traffic from LAN segment 2 to LAN
segment 1 should flow through Bridges C and A because this path has a greater bandwidth and is
therefore more efficient.
LAN 1
Bridge B
LAN 2
LAN 3
Bridge A
Bridge C
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Featured Functions
What happens if a link failure is detected? As shown in next figure, the STP process reconfigures
the network so that traffic from LAN segment 2 flows through Bridge B.
LAN 1
Bridge B
LAN 2
Bridge A
Bridge C
LAN 3
STP will determine which path between each bridged segment is most efficient, and then assign a
specific reference point on the network. When the most efficient path has been identified, the other
paths are blocked. In the above 3 figures, STP first determined that the path through Bridge C was
the most efficient, and as a result, blocked the path through Bridge B. After the failure of Bridge C,
STP re-evaluated the situation and opened the path through Bridge B.
How STP Works
When enabled, STP determines the most appropriate path for traffic through a network. The way it
does this is outlined in the sections below.
STP Requirements
Before STP can configure the network, the system must satisfy the following requirements:
y
Communication between all the bridges. This communication is carried out using Bridge
Protocol Data Units (BPDUs), which are transmitted in packets with a known multicast
address.
y
Each bridge must have a Bridge Identifier that specifies which bridge acts as the central
reference point, or Root Bridge, for the STP system—bridges with a lower Bridge Identifier
are more likely to be designated as the Root Bridge. The Bridge Identifier is calculated using
the MAC address of the bridge and a priority defined for the bridge. The default priority of
EDS-726 is 32768.
y
Each port has a cost that specifies the efficiency of each link. The efficiency cost is usually
determined by the bandwidth of the link, with less efficient links assigned a higher cost. The
following table shows the default port costs for a switch:
Port Speed
Path Cost 802.1D,
1998 Edition
Path Cost
802.1w-2001
10 Mbps
100
19
4
2,000,000
200,000
20,000
100 Mbps
1000 Mbps
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Featured Functions
STP Calculation
The first step of the STP process is to perform calculations. During this stage, each bridge on the
network transmits BPDUs. The following items will be calculated:
y
y
y
Which bridge should be the Root Bridge. The Root Bridge is the central reference point from
which the network is configured.
The Root Path Costs for each bridge. This is the cost of the paths from each bridge to the Root
Bridge.
The identity of each bridge’s Root Port. The Root Port is the port on the bridge that connects
to the Root Bridge via the most efficient path. In other words, the port connected to the Root
Bridge via the path with the lowest Root Path Cost. The Root Bridge, however, does not have
a Root Port.
y
The identity of the Designated Bridge for each LAN segment. The Designated Bridge is the
bridge with the lowest Root Path Cost from that segment. If several bridges have the same
Root Path Cost, the one with the lowest Bridge Identifier becomes the Designated Bridge.
Traffic transmitted in the direction of the Root Bridge will flow through the Designated
Bridge. The port on this bridge that connects to the segment is called the Designated Bridge
Port.
STP Configuration
After all the bridges on the network agree on the identity of the Root Bridge, and all other relevant
parameters have been established, each bridge is configured to forward traffic only between its
Root Port and the Designated Bridge Ports for the respective network segments. All other ports are
blocked, which means that they will not be allowed to receive or forward traffic.
STP Reconfiguration
Once the network topology has stabilized, each bridge listens for Hello BPDUs transmitted from
the Root Bridge at regular intervals. If a bridge does not receive a Hello BPDU after a certain
interval (the Max Age time), the bridge assumes that the Root Bridge, or a link between itself and
the Root Bridge, has gone down. This will trigger the bridge to reconfigure the network to account
for the change. If you have configured an SNMP trap destination, when the topology of your
network changes, the first bridge to detect the change sends out an SNMP trap.
Differences between RSTP and STP
RSTP is similar to STP, but includes additional information in the BPDUs that allow each bridge
to confirm that it has taken action to prevent loops from forming when it decides to enable a link
to a neighboring bridge. Adjacent bridges connected via point-to-point links will be able to enable
a link without waiting to ensure that all other bridges in the network have had time to react to the
change. The main benefit of RSTP is that the configuration decision is made locally rather than
network-wide, allowing RSTP can carry out automatic configuration and restore a link faster than
STP.
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STP Example
Featured Functions
The LAN shown below has three segments, with adjacent segments connected using two possible
links. The various STP factors, such as Cost, Root Port, Designated Bridge Port, and Blocked Port
are shown in the figure.
LAN Segment 1
Port 1
Port 1
Port 1
(Root Port)
(Root Port)
(Designated
Bridge Port)
Cost =100
Cost =100
Bridge B
Bridge X
Port 2
Bridge A
Port 2
Port 2
(Designated
Bridge Port)
(Blocked Port)
(Root Bridge)
LAN Segment 2
Port 1
(Root Port)
Cost =100
Port 1
(Root Port)
Cost =200
Bridge C
Bridge Y
Port 2
Port 2
(Designated
Bridge Port)
(Blocked Port)
LAN Segment 3
y
y
y
y
Bridge A has been selected as the Root Bridge, since it was determined to have the lowest
Bridge Identifier on the network.
Since Bridge A is the Root Bridge, it is also the Designated Bridge for LAN segment 1. Port 1
on Bridge A is selected as the Designated Bridge Port for LAN Segment 1.
Ports 1 of Bridges B, C, X, and Y are all Root Ports sine they are nearest to the Root Bridge,
and therefore have the most efficient path.
Bridges B and X offer the same Root Path Cost for LAN segment 2. However, Bridge B was
selected as the Designated Bridge for that segment since it has a lower Bridge Identifier. Port
2 on Bridge B is selected as the Designated Bridge Port for LAN Segment 2.
y
Bridge C is the Designated Bridge for LAN segment 3, because it has the lowest Root Path
Cost for LAN Segment 3:
¾
¾
The route through Bridges C and B costs 200 (C to B=100, B to A=100)
The route through Bridges Y and B costs 300 (Y to B=200, B to A=100)
y
The Designated Bridge Port for LAN Segment 3 is Port 2 on Bridge C.
Using STP on a Network with Multiple VLANs
IEEE Std 802.1D, 1998 Edition, does not take into account VLANs when calculating STP
information—the calculations only depend on the physical connections. Consequently, some
network configurations will result in VLANs being subdivided into a number of isolated sections
by the STP system. You must ensure that every VLAN configuration on your network takes into
account the expected STP topology and alternative topologies that may result from link failures.
3-28
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Featured Functions
The following figure shows an example of a network that contains VLANs 1 and 2. The VLANs
are connected using the 802.1Q-tagged link between Switch B and Switch C. By default, this link
has a port cost of 100 and is automatically blocked because the other Switch-to-Switch
connections have a port cost of 36 (18+18). This means that both VLANs are now
subdivided—VLAN 1 on Switch units A and B cannot communicate with VLAN 1 on Switch C,
and VLAN 2 on Switch units A and C cannot communicate with VLAN 2 on Switch B.
Switch A
PWR1
P
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F
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P1
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P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
STAT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
R
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MASTER COUPLER CF
PORT
PORT
MOD
EtrDevice Switch
EDS-726
3
4
3
4
3
4
3
4
4
3
4
3
X
X
TX
RX
TX
RX
TX
RX
TX
RX
1
2
1
2
1
2
1
2
1
2
1
2
X
X
TX
RX
IM-1GTX
M-1GSXSC
IM-4TX
IM-4MST
IM-4MSC
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
100BaseTX
100BaseTX
full-duplex Link;
only carries VLAN1
(path cost = 18)
full-duplex Link;
only carries VLAN2
(path cost = 18)
Switch B
Switch C
Block
PWR1
P
W
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2
F
A
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SPEED FDX/HDX
RING COUPLER
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P3
P4
P3
P4
P3
P4
PWR1
P
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2
F
A
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SPEED FDX/HDX
RING COUPLER
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P3
P4
P3
P4
P3
P4
STAT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
TAT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
MASTER COUPLER CF
PORT
PORT
P2
P1
P2
P1
P2
P1
P2
MASTER COUPLER CF
PORT
PORT
P2
P1
P2
P1
P2
P1
P2
MODE
MOE
EtheDevice Sitch
EDS-726
EtherDevicSich
EDS-726
3
4
2
3
1
4
3
4
3
4
4
3
4
2
3
1
4
2
3
4
3
4
4
3
1
4
2
3
3
1
4
2
3
TX
RX
TX
RX
TX
RX
TX
RX
TX
RX
TX
RX
TX
X
TX
X
TX
RX
TX
RX
1
2
1
1
2
1
2
1
2
1
2
1
2
1
2
TX
RX
TX
RX
X
RX
X
X
IM-1GTX
IM-1GSXSC
IM-4TX
IM-4MST
IM-4MSC
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
IM-1GTX
IM-1GSXSC
IM-4TX
IM-4MST
IM-4MSC
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
802.1Q tagged,
10BaseTx
half-duplex Link
carries VLAN1, 2
(path cost = 100)
To avoid subdividing VLANs, all inter-switch connections should be made members of all
available 802.1Q VLANs. This will ensure connectivity at all times. For example, the connections
between Switches A and B, and between Switches A and C should be 802.1Q tagged and carrying
VLANs 1 and 2 to ensure connectivity.
See the “Configuring Virtual LANs” section for more information about VLAN Tagging.
Configuring STP/RSTP
The following figures indicate which Spanning Tree Protocol parameters can be configured. A
more detailed explanation of each parameter is given below the figure.
At the top of this page, the user can check the “Current Status” of this function. For RSTP, you
will see:
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Now Active:
This field will show which communication protocol is being used—Turbo Ring, RSTP, or neither.
Root/Not Root
This field will appear only when selected to operate in RSTP mode. It indicates whether or not this
EDS-726 is the Root of the Spanning Tree (the root is determined automatically).
At the bottom of this page, the user can configure the “Settings” of this function. For RSTP, you
can configure:
Protocol of Redundancy
Setting
Turbo Ring
Description
Factory Default
Select this item to change to the Turbo Ring
configuration page.
None
RSTP (IEEE 802.1W/1D) Select this item to change to the RSTP
configuration page.
None
Bridge priority
Setting
Description
Factory Default
Numerical value selected
by user
Increase this device’s bridge priority by
selecting a lower number. A device with a
higher bridge priority has a greater chance of
being established as the root of the Spanning
Tree topology.
32768
Forwarding Delay
Setting
Description
Factory Default
Numerical value input by
user
The amount of time this device waits before
checking to see if it should change to a
different state.
15 (sec.)
Hello time (sec.)
Setting
Description
Factory Default
Numerical value input by
user
The root of the Spanning Tree topology
periodically sends out a “hello” message to
other devices on the network to check if the
topology is healthy. The “hello time” is the
amount of time the root waits between sending
hello messages.
2
Max. Age (sec.)
Setting
Description
Factory Default
Numerical value input by
user
If this device is not the root, and it has not
received a hello message from the root in an
amount of time equal to “Max. Age,” then this
device will reconfigure itself as a root. Once
two or more devices on the network are
recognized as a root, the devices will
renegotiate to set up a new Spanning Tree
topology.
20
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Enable STP per Port
Setting
Description
Factory Default
Enable/Disable
Select to enable the port as a node on the
Spanning Tree topology.
Disabled
We suggest not enabling the Spanning Tree Protocol once the port is connected to a device (PLC,
RTU, etc.) as opposed to network equipment. The reason is that it will cause unnecessary
negotiation.
NOTE
Port Priority
Setting
Description
Factory Default
128
Numerical value selected
by user
Increase this port’s priority as a node on the
Spanning Tree topology by inputting a lower
number.
Port Cost
Setting
Description
Factory Default
Numerical value input by
user
Input a higher cost to indicate that this port is
less suitable as a node for the Spanning Tree
topology.
200000
Port Status
Indicates the current Spanning Tree status of this port. “Forwarding” for normal transmission, or
“Blocking” to block transmission.
Configuration Limits of RSTP/STP
The Spanning Tree Algorithm places limits on three of the configuration items described above:
[Eq. 1]: 1 sec ≦ Hello Time ≦ 10 sec
[Eq. 2]: 6 sec ≦ Max. Age ≦ 40 sec
[Eq. 3]: 4 sec ≦ Forwarding Delay ≦ 30 sec
These three variables are further restricted by the following two inequalities:
[Eq. 4]: 2 * (Hello Time + 1 sec) ≦ Max. Age ≦ 2 * (Forwarding Delay – 1 sec)
MOXA EDS-726’s firmware will alert you immediately if any of these restrictions are violated.
For example, setting
Hello Time = 5 sec, Max. Age = 20 sec, and Forwarding Delay = 4 sec does not violate Eqs. 1
through 3, but does violate Eq. 4, since in this case,
2 * (Hello Time + 1 sec) = 12 sec, and 2 * (Forwarding Delay – 1 sec) = 6 sec.
You can remedy the situation in any number of ways. One solution is simply to increase the
Forwarding Delay value to at least 11 sec.
HINT: Take the following steps to avoid guessing:
Step 1: Assign a value to “Hello Time” and then calculate the left most part of Eq. 4 to get the
lower limit of “Max. Age.”
Step 2: Assign a value to “Forwarding Delay” and then calculate the right most part of Eq. 4 to
get the upper limit for “Max. Age.”
Step 3: Assign a value to “Forwarding Delay” that satisfies the conditions in Eq. 3 and Eq. 4.
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Using Traffic Prioritization
EDS-726’s traffic prioritization capability provides Quality of Service (QoS) to your network by
making data delivery more reliable. You can prioritize traffic on your network to ensure that high
priority data is transmitted with minimum delay. Traffic can be controlled by a set of rules to
obtain the required Quality of Service for your network. The rules define different types of traffic
and specify how each type should be treated as it passes through the switch. MOXA EDS-726 can
inspect both IEEE 802.1p/1Q layer 2 CoS tags, and even layer 3 TOS information to provide
consistent classification of the entire network. EDS-726’s QoS capability improves the
performance and determinism of industrial networks for mission critical applications.
The Traffic Prioritization Concept
What is Traffic Prioritization?
Traffic prioritization allows you to prioritize data so that time-sensitive and system-critical data
can be transferred smoothly and with minimal delay over a network. The benefits of using traffic
prioritization are:
y
y
y
y
Improve network performance by controlling a wide variety of traffic and managing
congestion.
Assign priorities to different categories of traffic. For example, set higher priorities for
time-critical or business-critical applications.
Provide predictable throughput for multimedia applications, such as video conferencing or
voice over IP, and minimize traffic delay and jitter.
Improve network performance as the amount of traffic grows. This will save cost by reducing
the need to keep adding bandwidth to the network.
How Traffic Prioritization Works
Traffic prioritization uses the four traffic queues that are present in your EDS-726 to ensure that
high priority traffic is forwarded on a different queue from lower priority traffic. This is what
provides Quality of Service (QoS) to your network.
EDS-726 traffic prioritization depends on two industry-standard methods:
y
y
IEEE 802.1D—a layer 2 marking scheme.
Differentiated Services (DiffServ)—a layer 3 marking scheme.
IEEE 802.1D Traffic Marking
The IEEE Std 802.1D, 1998 Edition marking scheme, which is an enhancement to IEEE Std
802.1D, enables Quality of Service on the LAN. Traffic service levels are defined in the IEEE
802.1Q 4-byte tag, which is used to carry VLAN identification as well as IEEE 802.1p priority
information. The 4-byte tag immediately follows the destination MAC address and Source MAC
address.
The IEEE Std 802.1D, 1998 Edition priority marking scheme assigns an IEEE 802.1p priority
level between 0 and 7 to each frame. This determines the level of service that that type of traffic
should receive. Refer to the table below for an example of how different traffic types can be
mapped to the eight IEEE 802.1p priority levels.
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IEEE 802.1p Priority Level
IEEE 802.1D Traffic Type
Best Effort (default)
0
1
2
3
4
5
Background
Standard (spare)
Excellent Effort (business critical)
Controlled Load (streaming multimedia)
Video (interactive media); less than 100 milliseconds
of latency and jitter
6
7
Voice (interactive voice); less than 10 milliseconds of
latency and jitter
Network Control Reserved traffic
Even though the IEEE 802.1D standard is the most widely used prioritization scheme in the LAN
environment, it still has some restrictions:
y
It requires an additional 4-byte tag in the frame, which is normally optional in Ethernet
networks. Without this tag, the scheme cannot work.
y
The tag is part of the IEEE 802.1Q header, so to implement QoS at layer 2, the entire network
must implement IEEE 802.1Q VLAN tagging.
It is only supported on a LAN and not across routed WAN links, since the IEEE 802.1Q tags are
removed when the packets pass through a router.
Differentiated Services (DiffServ) Traffic Marking
DiffServ is a Layer 3 marking scheme that uses the DiffServ Code Point (DSCP) field in the IP
header to store the packet priority information. DSCP is an advanced intelligent method of traffic
marking because you can choose how your network prioritizes different types of traffic. DSCP
uses 64 values that map to user-defined service levels, allowing you to establish more control over
network traffic.
Advantages of DiffServ over IEEE 802.1D are:
y
Configure how you want your switch to treat selected applications and types of traffic by
assigning various grades of network service to them.
y
y
y
No extra tags are required in the packet.
DSCP uses the IP header of a packet and therefore priority is preserved across the Internet.
DSCP is backward compatible with IPV4 TOS, which allows operation with existing devices
that use a layer 3 TOS enabled prioritization scheme.
Traffic Prioritization
EDS-726 classifies traffic based on layer 2 of the OSI 7 layer model, and the switch prioritizes
received traffic according to the priority information defined in the received packet. Incoming
traffic is classified based upon the IEEE 802.1D frame and is assigned to the appropriate priority
queue based on the IEEE 802.1p service level value defined in that packet. Service level markings
(values) are defined in the IEEE 802.1Q 4-byte tag, and consequently traffic will only contain
802.1p priority markings if the network is configured with VLANs and VLAN tagging. The traffic
flow through the switch is as follows:
1. A packet received by the EDS-726 may or may not have an 802.1p tag associated with it. If it
does not, then it is given a default 802.1p tag (which is usually 0). Alternatively, the packet
may be marked with a new 802.1p value, which will result in all knowledge of the old 802.1p
tag being lost.
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2. Because the 802.1p priority levels are fixed to the traffic queues, the packet will be placed in
the appropriate priority queue, ready for transmission through the appropriate egress port.
When the packet reaches the head of its queue and is about to be transmitted, the device
determines whether or not the egress port is tagged for that VLAN. If it is, then the new
802.1p tag is used in the extended 802.1D header.
The EDS-726 will check a packet received at the ingress port for IEEE 802.1D traffic
classification, and then prioritize it based upon the IEEE 802.1p value (service levels) in that tag.
It is this 802.1p value that determines which traffic queue the packet is mapped to.
Traffic Queues
The EDS-726 hardware has multiple traffic queues that allow packet prioritization to occur.
Higher priority traffic can pass through the EDS-726 without being delayed by lower priority
traffic. As each packet arrives in the EDS-726, it passes through any ingress processing (which
includes classification, marking/re-marking), and is then sorted into the appropriate queue. The
switch then forwards packets from each queue.
EDS-726 supports two different queuing mechanisms:
y
Weight Fair: This method services all the traffic queues, giving priority to the higher priority
queues. Under most circumstances, this method gives high priority precedence over
low-priority, but in the event that high-priority traffic exceeds the link capacity, lower priority
traffic is not blocked.
y
Strict: This method services high traffic queues first; low priority queues are delayed until no
more high priority data needs to be sent. This method always gives precedence to high priority
over low-priority.
Configuring Traffic Prioritization
Quality of Service (QoS) provides a traffic prioritization capability to ensure that important data is
delivered consistently and predictably. EDS-726 Series can inspect IEEE 802.1p/1Q layer 2 CoS
tags, and even layer 3 TOS information, to provide a consistent classification of the entire network.
EDS-726 Series’ QoS capability improves your industrial network’s performance and determinism
for mission critical applications.
QoS Classification
MOXA EDS-726 supports inspection of layer 3 TOS and/or layer 2 CoS tag information to
determine how to classify traffic packets.
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Queuing Mechanism
Setting
Description
Factory Default
Weighted Fair
EDS-726 has 4 priority queues. In the weight fair
scheme, an 8, 4, 2, 1 weighting is applied to the four
priorities. This approach prevents the lower priority
frames from being starved of opportunity for
transmission with only a slight delay to the higher
priority frames.
Weight Fair
Strict
In the Strict-priority scheme, all top-priority frames
egress a port until that priority’s queue is empty, and
then the next lower priority queue’s frames egress. This
approach can cause the lower priorities to be starved of
opportunity for transmitting any frames but ensures all
high priority frames to egress the switch as soon as
possible.
Inspect TOS
Setting
Description
Factory Default
Enable/Disable
Check the checkbox to enable EDS-726 to inspect the
Type of Service (TOS) bits in IPV4 frame to determine
the priority of each frame.
Enable
Inspect COS
Setting
Description
Factory Default
Enable/Disable
Check the check box to enable EDS-726 to inspect the
802.1p COS tag in the MAC frame to determine the
priority of each frame.
Enable
Default Port Priority
Setting
Description
Factory Default
Low/Normal/
Medium/High
Set the Port Default Priority of the ingress frames to
different priority queues. If the received packets are not
equipped with any tag information (CoS, TOS) the
default port priority will take effect.
Normal
The priority of an ingress frame is determined in order by:
NOTE
NOTE
1. Inspect TOS
2. Inspect CoS
3. Default Port Priority
The designer can enable these classifications individually or in combination. For instance, if a
‘hot,’ higher priority port is required for a network design, “Inspect TOS” and “Inspect CoS” can
be disabled. This setting leaves only port default priority active, which results in all ingress
frames being assigned the same priority on that port.
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CoS Mapping
Setting
Description
Factory
Low/Normal/
Medium/High
Set the mapping table of different CoS values to 4
different egress queues.
0: Low
1: Low
2: Normal
3: Normal
4: Medium
5: Medium
6: High
7: High
TOS/DiffServ Mapping
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Setting
Description
Factory Default
Low/Normal/
Medium/High
Set the mapping table of different TOS values to 4
different egress queues.
1 to 16: Low
17 to 32: Normal
33 to 48: Medium
49 to 64: High
Using Virtual LAN
Setting up Virtual LANs (VLANs) on your EDS-726 increases the efficiency of your network by
dividing the LAN into logical segments, as opposed to physical segments. In general, VLANs are
easier to manage.
The Virtual LAN (VLAN) Concept
What is a VLAN?
A VLAN is a group of devices that can be located anywhere on a network, but which
communicate as if they are on the same physical segment. With VLANs, you can segment your
network without being restricted by physical connections—a limitation of traditional network
design. As an example, with VLANs you can segment your network according to:
y
y
y
Departmental groups—You could have one VLAN for the Marketing department, another
for the Finance department, and another for the Development department.
Hierarchical groups—You could have one VLAN for directors, another for managers, and
another for general staff.
Usage groups—You could have one VLAN for e-mail users, and another for multimedia
users.
Switch A
5
6
7
8
1
2
3
4
Backbone connects multiple switches
Switch B
5
6
7
8
1
2
3
4
Department 3
VLAN 3
Department 1
VLAN 1
Department 2
VLAN 2
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Benefits of VLANs
Featured Functions
The main benefit of VLANs is that they provide a network segmentation system that is far more
flexible than traditional networks. Using VLANs also provides you with three other benefits:
y
VLANs ease the relocation of devices on networks: With traditional networks, network
administrators spend much of their time dealing with moves and changes. If users move to a
different subnetwork, the addresses of each host must be updated manually. With a VLAN
setup, if a host on VLAN Marketing, for example, is moved to a port in another part of the
network, and retains its original subnet membership, you only need to specify that the new
port is on VLAN Marketing. You do not need to carry out any re-cabling.
y
y
VLANs provide extra security: Devices within each VLAN can only communicate with
other devices on the same VLAN. If a device on VLAN Marketing needs to communicate
with devices on VLAN Finance, the traffic must pass through a routing device or Layer 3
switch.
VLANs help control traffic: With traditional networks, congestion can be caused by
broadcast traffic that is directed to all network devices, regardless of whether or not they need
it. VLANs increase the efficiency of your network because each VLAN can be set up to
contain only those devices that need to communicate with each other.
VLANs and MOXA EtherDevice Switch
Your EDS-726 provides support for VLANs using IEEE Std 802.1Q-1998. This standard allows
traffic from multiple VLANs to be carried across one physical link. The IEEE Std 802.1Q-1998
standard allows each port on your EDS-726 to be placed in:
y
y
Any one VLAN defined on the EDS-726.
Several VLANs at the same time using 802.1Q tagging.
The standard requires that you define the 802.1Q VLAN ID about each VLAN on your EDS-726
before the switch can use it to forward traffic:
Managing a VLAN
A new or initialized EDS-726 contains a single VLAN—the Default VLAN. This VLAN has the
following definition:
y
y
VLAN Name—Management VLAN
802.1Q VLAN ID—1 (if tagging is required)
All the ports are initially placed in this VLAN, and it is the only VLAN that allows you to access
the management software of the EDS-726 over the network.
Communication Between VLANs
If devices connected to a VLAN need to communicate to devices on a different VLAN, a router or
Layer 3 switching device with connections to both VLANs needs to be installed. Communication
between VLANs can only take place if they are all connected to a routing or Layer 3 switching
device.
VLANs: Tagged and Untagged Membership
Your EDS-726 supports 802.1Q VLAN tagging, a system that allows traffic for multiple VLANs
to be carried on a single physical (backbone, trunk) link. When setting up VLANs you need to
understand when to use untagged and tagged membership of VLANs. Simply put, if a port is on a
single VLAN it can be an untagged member, but if the port needs to be a member of multiple
VLANs, tagged membership must be defined.
A typical host (e.g., clients) will be untagged members of one VLAN, defined as “Access Port” in
EDS-726, while inter-switch connections will be tagged members of all VLANs, defined as
“Trunk Port” in EDS-726.
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The IEEE Std 802.1Q-1998 defines how VLANs operate within an open packet-switched network.
An 802.1Q compliant packet carries additional information that allows a switch to determine
which VLAN the port belongs to. If a frame is carrying the additional information, it is known as a
tagged frame.
To carry multiple VLANs across a single physical (backbone, trunk) link, each packet must be
tagged with a VLAN identifier so that the switches can identify which packets belong in which
VLAN. To communicate between VLANs, a router must be used.
MOXA EDS-726 supports two types of VLAN port settings:
y
Access Port: The port connects to a single device that is not tagged. The user must define the
default port PVID that assigns which VLAN the device belongs to. Once the ingress packet of
this Access Port egresses to another Trunk Port (the port needs all packets to carry tag
information), EDS-726 will insert this PVID into this packet to help the next 802.1Q VLAN
switch recognize it.
y
Trunk Port: The port connects to a LAN that consists of untagged devices/tagged devices
and/or switches and hubs. In general, the traffic of the Trunk Port must have a Tag. Users can
also assign PVID to a Trunk Port. The untagged packet on the Trunk Port will be assigned the
port default PVID as its VID.
The following section illustrates how to use these ports to set up different applications.
Sample Applications of VLANs using MOXA EDS-726
Device I
VLAN 4 Untagged
Device
Port 7 (Access Port
Device A
VLAN 5 Untagged Device
PVID 4)
Switch A
Switch B
PWR1
P
W
R
2
F
A
U
L
T
SPEED FDX/HDX
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
PWR1
P
W
R
2
F
A
U
L
T
SPEED FDX/HDX
P3
P4
P3
P4
P3
P4
P3
P4
P3
P4
P3
P1
P4
P2
STAT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
STAT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
R
I
N
G
C
O
U
P
L
E
R
R
I
N
G
C
O
U
P
L
E
R
MASTER COUPLER CF
PORT
PORT
MASTER COUPLER CF
PORT
PORT
P1
P2
P1
P2
P1
P2
P1
P2
P1
P2
Port 3 (Trunk Port, PVID 1)
MODE
MODE
Port 5 (Access Port
PVID 3)
EtherDevice Switch
EDS-726
terDeiSwitch
EDS-726
3
4
3
4
3
4
3
4
4
3
4
3
4
3
4
3
4
4
3
4
3
3
4
3
X
TX
TX
X
TX
RX
TX
X
X
TX
RX
X
RX
RX
RX
X
RX
RX
X
2
1
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
X
X
TX
RX
TX
RX
IM-1GTX
IM-1GSXSC
IM-4TX
M-4MST
M-4MSC
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
IM-1GTX
M-1GSXSC
IM-4TX
IM-4MST
IM-4MSC
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
Port 1 (Access Port
PVID 5)
Device H
VLAN 3 Untagged
Device
Port 2 (Trunk Port PVID 2,
Fixed VLAN (Tagged)=3,4)
Port 6 (Access Port PVID 5)
Port 4 (Access
Port PVID 2)
HUB
Device F
Device G
VLAN 2 Untagged
Device
VLAN 5 Untagged Device
Device E
VLAN 4 Tagged Device, VID 4
Device D
VLAN 3 Tagged Device, VID 3
Device B
VLAN 2 Untagged
Device
Device C
VLAN 2 Untagged
Device
In this application,
y
Port 1 connects a single untagged device and assigns it to VLAN 5; it should be configured as
“Access Port” with PVID 5.
y
Port 2 connects a LAN with two untagged devices belonging to VLAN 2. One tagged device
with VID 3 and one tagged device with VID 4. It should be configured as “Trunk Port” with
PVID 2 for untagged device and Fixed VLAN (Tagged) with 3 and 4 for tagged device. Since
each port can only have one unique PVID, all untagged devices on the same port can only
belong to the same VLAN.
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y
y
y
y
y
Port 3 connects with another switch. It should be configured as “Trunk Port.” GVRP protocol
will be used through the Trunk Port.
Port 4 connects a single untagged device and assigns it to VLAN 2; it should be configured as
“Access Port” with PVID 2.
Port 5 connects a single untagged device and assigns it to VLAN 3; it should be configured as
“Access Port” with PVID 3.
Port 6 connect a single untagged device and assigns it to VLAN 5; it should be configured as
“Access Port” with PVID 5.
Port 7 connects a single untagged device and assigns it to VLAN 4; it should be configured as
“Access Port” with PVID 4.
After proper configuration:
y
y
y
Packets from device A will travel through “Trunk Port 3” with tagged VID 5. Switch B will
recognize its VLAN, pass it to port 6, and then remove tags received successfully by device G,
and vice versa.
Packets from device B and C will travel through “Trunk Port 3” with tagged VID 2. Switch B
recognizes its VLAN, passes it to port 4, and then removes tags received successfully by
device F, and vice versa.
Packets from device D will travel through “Trunk Port 3” with tagged VID 3. Switch B will
recognize its VLAN, pass to port 5, and then remove tags received successfully by device H.
Packets from device H will travel through “Trunk Port 3” with PVID 3. Switch A will
recognize its VLAN and pass it to port 2, but will not remove tags received successfully by
device D.
y
Packets from device E will travel through “Trunk Port 3” with tagged VID 4. Switch B will
recognize its VLAN, pass it to port 7, and then remove tags received successfully by device I.
Packets from device I will travel through “Trunk Port 3” with tagged VID 4. Switch A will
recognize its VLAN and pass it to port 2, but will not remove tags received successfully by
device E.
Configuring 802.1Q VLAN
VLAN Port Settings
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To configure EDS-726 VLANs, use the VLAN Port Setting page to configure the ports.
Port Type
Setting
Description
Factory Default
Access
This port type is used to connect single devices without
tags.
Trunk
Select “Trunk” port type to connect another 802.1Q
VLAN aware switch or another LAN that combines
tagged and/or untagged devices and/or other
switches/hubs.
Access
ATTENTION
For communication redundancy in the VLAN environment, set “Redundant Port,” “Coupling
Port,” and “Coupling Control Port” as “Trunk Port,” since these ports act as the “backbone” to
transmit all packets of different VLANs to different EDS-726 units.
Management VLAN ID
Setting
VLAN ID
Description
Factory Default
Set the management VLAN of this EDS-726.
1
ranges from
1 to 4094
Port PVID
Setting
Description
Factory Default
VID range from 1 Set the port default VLAN ID for untagged devices that
to 4094 connect to the port.
1
Port Fixed VLAN List (Tagged)
Setting
Description
Factory Default
VID range from 1 This field will be active only when selecting the “Trunk” None
to 4094
port type. Set the other VLAN ID for tagged devices that
connect to the “Trunk” port. Use commas to separate
different VIDs.
Port Forbidden VLAN List
Setting
Description
Factory Default
VID range from 1 This field will be active only when selecting the “Trunk” None
to 4094
port type. Set the VLAN IDs that will not be supported
by this trunk port. Use commas to separate different
VIDs.
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VLAN Table
In this table, you can review the VLAN groups that were created, Joined Access Ports, and Trunk
Ports.
The physical network can have a maximum of 64 VLAN settings.
NOTE
Using Multicast Filtering
Multicast filtering improves the performance of networks that carry multicast traffic. This section
explains multicasts, multicast filtering, and how multicast filtering can be implemented on your
EDS-726.
The Concept of Multicast Filtering
What is an IP Multicast?
A multicast is a packet sent by one host to multiple hosts. Only those hosts that belong to a
specific multicast group will receive the multicast. If the network is set up correctly, a multicast
can only be sent to an end-station or a subset of end-stations on a LAN or VLAN that belong to
the multicast group. Multicast group members can be distributed across multiple subnetworks, so
that multicast transmissions can occur within a campus LAN or over a WAN. In addition,
networks that support IP multicast send only one copy of the desired information across the
network until the delivery path that reaches group members diverges. To make more efficient use
of network bandwidth, it is only at these points that multicast packets are duplicated and
forwarded. A multicast packet has a multicast group address in the destination address field of the
packet’s IP header.
Benefits of Multicast
The benefits of using IP multicast are that it:
y
y
y
y
Uses the most efficient, sensible method to deliver the same information to many receivers
with only one transmission.
Reduces the load on the source (for example, a server) since it will not need to produce
several copies of the same data.
Makes efficient use of network bandwidth and scales well as the number of multicast group
members increases.
Works with other IP protocols and services, such as Quality of Service (QoS).
Multicast transmission makes more sense and is more efficient than unicast transmission for some
applications. For example, multicasts are often used for video-conferencing, since high volumes of
traffic must be sent to several end-stations at the same time, but where broadcasting the traffic to
all end-stations would cause a substantial reduction in network performance. Furthermore, several
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industrial automation protocols, such as Allen-Bradley, EtherNet/IP, Siemens Profibus, and
Foundation Fieldbus HSE (High Speed Ethernet), use multicast. These industrial Ethernet
protocols use publisher/subscriber communications models by multicasting packets that could
flood a network with heavy traffic. IGMP Snooping is used to prune multicast traffic so that it
travels only to those end destinations that require the traffic, reducing the amount of traffic on the
Ethernet LAN.
Multicast Filtering
Multicast filtering ensures that only end-stations that have joined certain groups receive multicast
traffic. With multicast filtering, network devices only forward multicast traffic to the ports that are
connected to registered end-stations. The following two figures illustrate how a network behaves
without multicast filtering, and with multicast filtering.
Network without multicast filtering
Group 1 Multicast Stream
Group 2 Multicast Stream
Serial ports
Console
LAN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
IGMP Group2 IGMP Group1 IGMP Group2 IGMP Group1
All hosts receive the multicast traffic, even if they don’t need it.
Network with multicast filtering
Group 1 Multicast Stream
Group 2 Multicast Stream
PWR1
PWR2 FAULT
SPEED FDX/HDX
RING COUPLER
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
STAT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
MASTER COUPLER CF
PORT
PORT
MODE
EtherDevice Switch
EDS-726
3
4
2
3
1
4
2
3
4
3
4
4
3
1
4
2
3
TX
RX
TX
RX
X
X
X
X
TX
RX
1
1
2
1
2
1
2
TX
RX
TX
RX
IM-1GTX
IM-1GSXSC
IM-4TX
IM-4MST
IM-4MSC
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
IGMP Group2 IGMP Group1 IGMP Group2 IGMP Group1
Hosts only receive dedicated traffic from other hosts belonging to the same group.
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Multicast Filtering and MOXA EtherDevice Switch
EDS-726 has three ways to achieve multicast filtering: IGMP (Internet Group Management
Protocol) Snooping, GMRP (GARP Multicast Registration Protocol), and adding a static multicast
MAC manually to filter multicast traffic automatically.
IGMP (Internet Group Management Protocol)
Snooping Mode
Snooping Mode allows your switch to forward multicast packets only to the appropriate ports. The
switch “snoops” on exchanges between hosts and an IGMP device, such as a router, to find those
ports that want to join a multicast group, and then configures its filters accordingly.
Query Mode
Query mode allows the EDS-726 to work as the Querier if it has the lowest IP address on the
subnetwork to which it belongs. IGMP querying is enabled by default on the EDS-726 to help
prevent interoperability issues with some multicast routers that may not follow the lowest IP
address election method. Enable query mode to run multicast sessions on a network that does not
contain IGMP routers (or queriers).
EDS-726 is compatible with any device that conforms to the IGMP v2 and IGMP v3 device
protocol.
NOTE
IGMP Multicast Filtering
IGMP is used by IP-supporting network devices to register hosts with multicast groups. It can be
used on all LANs and VLANs that contain a multicast capable IP router, and on other network
devices that support multicast filtering. IGMP works as follows:
1. The IP router (or querier) periodically sends query packets to all end-stations on the LANs or
VLANs that are connected to it. For networks with more than one IP router, the router with
the lowest IP address is the querier. A switch with IP address lower than the IP address of any
other IGMP queriers connected to the LAN or VLAN can become the IGMP querier.
2. When an IP host receives a query packet, it sends a report packet back that identifies the
multicast group that the end-station would like to join.
3. When the report packet arrives at a port on a switch with IGMP Snooping enabled, the switch
knows that the port should forward traffic for the multicast group, and then proceeds to
forward the packet to the router.
4. When the router receives the report packet, it registers that the LAN or VLAN requires traffic
for the multicast groups.
5. When the router forwards traffic for the multicast group to the LAN or VLAN, the switches
only forward the traffic to ports that received a report packet.
GMRP (GARP Multicast Registration Protocol)
EDS-726 supports IEEE 802.1D-1998 GMRP (GARP Multicast Registration Protocol), which
differs from IGMP (Internet Group Management Protocol). GMRP is a MAC-based multicast
management protocol, whereas IGMP is IP-based. GMRP provides a mechanism that allows
bridges and end stations to register or de-register Group membership information dynamically.
GMRP functions similarly to GVRP, except that GMRP registers multicast addresses on ports.
When a port receives a GMRP-join message, it will register the multicast address to its database if
the multicast address is not registered, and all the multicast packets with that multicast address are
able to be forwarded from this port. When a port receives a GMRP-leave message, it will
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de-register the multicast address from its database, and all the multicast packets with this multicast
address are not able to be forwarded from this port.
Static Multicast MAC
Some devices may only support multicast packets, but not support either IGMP Snooping or
GMRP. MOXA EDS-726 supports adding multicast groups manually to enable multicast filtering.
Enabling Multicast Filtering
Use the serial console or Web interface to enable or disable IGMP Snooping and IGMP querying.
If IGMP Snooping is not enabled, then IP multicast traffic is always forwarded, flooding the
network.
Configuring IGMP Snooping
IGMP Snooping provides the ability to prune multicast traffic so that it travels only to those end
destinations that require that traffic, thereby reducing the amount of traffic on the Ethernet LAN.
IGMP Snooping Settings
Querier Interval
Setting
Numerical value Set the query interval of the Querier function globally.
input by user Valid settings are from 20 to 600 seconds.
Description
Factory Default
125 seconds
IGMP Snooping Enable
Setting
Description
Factory Default
Enable/Disable
Click the checkbox to enable the IGMP Snooping
Disabled
function globally.
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IGMP Snooping
Setting
Description
Factory Default
Enable/Disable
Click the checkbox to enable the IGMP Snooping
function per VLAN.
Enabled if IGMP
Snooping Enabled
Globally
Static Multicast Router Port
Setting
Description
Factory Default
Select/Deselect
Click the checkbox to select which ports will connect to Disabled
the multicast routers. It’s active only when IGMP
Snooping is enabled.
Querier
Setting
Description
Factory Default
Enable/Disable
Click the checkbox to enable EDS-726’s querier
function.
Enabled if IGMP
Snooping is
Enabled Globally
At least one switch must be designated the querier or enable IGMP snooping and GMRP when
enabling Turbo Ring and IGMP snooping simultaneously.
NOTE
IGMP Table
EDS-726 displays the current active IGMP groups that were detected.
The information includes VID, Auto-learned Multicast Router Port, Static Multicast Router
Port, Querier Connected Port, and the IP and MAC addresses of active IGMP groups.
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Add Static Multicast MAC
If required, MOXA EDS-726 also supports adding multicast groups manually.
Add New Static Multicast Address to the List
Setting
Description
Factory Default
MAC Address
Input the multicast MAC address of this host.
None
VLA
Setting
integer
Description
Factory Default
Input the number of the VLAN that the host with this
MAC Address belongs to.
None
Join Port
Setting
Description
Factory Default
Select/Deselect
Checkmark the appropriate check boxes to select the
join ports for this multicast group.
None
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Configuring GMRP
GMRP is a MAC-based multicast management protocol, whereas IGMP is IP-based. GMRP
provides a mechanism that allows bridges and end stations to register or un-register Group
membership information dynamically.
Port
Setting
Description
Factory Default
x-y
Displays the module (x) and port No. by module (y) of
None
all ports that can enable the GMRP function
GMRP enable
Setting
Description
Factory Default
Enable/Disable
Click the check box to enable the GMRP function for
the port listed in the Port column
Disable
Port Mode
Setting
Description
Factory Default
Forward All
Select to forward all multicast frames unless an explicit Forward Unknown
Static Filtering Entry specifies filtering (Add Static
Multicast MAC).
Forward
Unknown
(Unregister)
Select to forward the multicast frames unless (1) an
explicit Static Filtering Entry specifies filtering (Add
Static Multicast MAC), or (2) an applicable Group
Registration Entry specifies filtering.
Forward Unknown
Filter Unknown
(Unregister)
Select to filter the multicast frames unless (1) an explicit Forward Unknown
Static Filtering Entry specifies filtering (Add Static
Multicast MAC), or (2) an applicable Group
Registration Entry specifies filtering.
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GMRP Table
EDS-726 displays the current active GMRP groups that were detected
Setting
Fixed Ports
Description
This multicast address is defined by static multicast.
This multicast address is learned by GMRP.
Learned Ports
Using Bandwidth Management
In general, one host should not be allowed to occupy unlimited bandwidth, particularly when the
device malfunctions. For example, so-called “broadcast storms” could be caused by an incorrectly
configured topology, or a malfunctioning device. The EDS-726 series not only prevents broadcast
storms, but can also be configured to a different ingress rate for all packets, giving administrators
full control of their limited bandwidth to prevent undesirable effects caused by unpredictable
faults.
Configuring Bandwidth Management
Broadcast Storm Protection
Setting
Description
Factory Default
Enable/Disable
Enable or disable the Broadcast Storm Protection for
broadcast and unknown unicast packets globally.
N/A
Check the check box to include multicast packets when
enabled for Broadcast Storm Protection.
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Traffic Rate Limiting Settings
Setting
Description
Factory Default
Ingress rate
Select the ingress rate for all packets from the following N/A
options: not limited, 3%, 5%, 10%, 15%, 25%, 35%,
50%, 65%, 85%
Using Port Access Control
EDS-726 provides two kinds of Port-Base Access Control. One is IEE 802.1X and the other is
Static Port Lock.
IEEE 802.1X
The IEEE 802.1X standard defines a protocol for client/server-based access control and
authentication. The protocol restricts unauthorized clients from connecting to a LAN through ports
that are open to the Internet, and which otherwise would be readily accessible. The purpose of the
authentication server is to check each client that requests access to the port. The client is only
allowed access to the port if the client’s permission is authenticated.
Static Port Lock
EDS-726 can also be configured to protect static MAC addresses for a specific port. With the Port
Lock function, these locked ports will not learn any additional addresses, but only allow traffic
from preset static MAC addresses, helping to block hackers and careless usage.
The IEEE802.1X Concept
Three components are used to create an authentication mechanism based on 802.1X standards:
Client/Supplicant, Authentication Server, and Authenticator.
Supplicant: The end station that requests access to the LAN and switch services and responds to
the requests from the switch.
Authentication server: The server that performs the actual authentication of the supplicant.
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Authenticator: Edge switch or wireless access point that acts as a proxy between the supplicant
and the authentication server, requesting identity information from the supplicant, verifying the
information with the authentication server, and relaying a response to the supplicant.
EDS-726 acts as an authenticator in the 802.1X environment. A supplicant and an authenticator
exchange EAPOL (Extensible Authentication Protocol over LAN) frames with each other. We can
either use an external RADIUS server as the authentication server, or implement the authentication
server in EDS-726 by using a Local User Database as the authentication look-up table. When we
use an external RADIUS server as the authentication server, the authenticator and the
authentication server exchange EAP frames between each other.
Authentication can be initiated either by the supplicant or the authenticator. When the supplicant
initiates the authentication process, it sends an “EAPOL-Start” frame to the authenticator. When
the authenticator initiates the authentication process or when it receives an “EAPOL Start” frame,
it sends an “EAP Request/Identity” frame to ask for the username of the supplicant. The following
actions are described below:
Message Exchange
Authentication
server
Client
(RADIUS)
PWR1
P
W
R
2
F
A
U
L
T
SPEED FDX/HDX
RING COUPLER
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
TAT
LNK/ACT
PWR
PWR
PWR
PWR
PWR
PWR
MASTER COUPLER CF
PORT
PORT
MODE
Erevice Switch
EDS-726
3
4
2
3
1
4
2
3
4
3
4
4
3
4
2
3
X
X
X
X
X
X
X
X
TX
RX
1
1
1
2
1
2
1
2
X
X
X
X
IM-1GTX
IM-1GSXSC
IM-4TX
IM-4MST
IM-4MSC
IM-2MST/2TX
IM-2MSC/2TX
IM-1LSC/3TX
EAPOL-Start
EAP-Request/Identity
EAP-Response/Identity
EAP-Request/OTP
EAP-Response/OTP
EAP-Success
RADIUS Access-Request
RADIUS Access-Challenge
RADIUS Access-Request
RADIUS Access-Accept
Port Authorized
EAPOL-Logoff
Port Unauthorized
1. When the supplicant receives an “EAP Request/Identity” frame, it sends an “EAP
Response/Identity” frame with its username back to the authenticator.
2. If the RADIUS server is used as the authentication server, the authenticator relays the “EAP
Response/Identity” frame from the supplicant by encapsulating it into a “RADIUS
Access-Request” frame and sends to the RADIUS server. When the authentication server
receives the frame, it looks up its database to check if the username exists. If the username is
not present, the authentication server replies with a “RADIUS Access-Reject” frame to the
authenticator if the server is a RADIUS server or just indicates failure to the authenticator if
the Local User Database is used. The authenticator sends an “EAP-Failure” frame to the
supplicant.
3. The RADIUS server sends a “RADIUS Access-Challenge,” which contains an “EAP Request”
with an authentication type to the authenticator to ask for the password from the client. RFC
2284 defines several EAP authentication types, such as “MD5-Challenge,” “One-Time
Password,” and “Generic Token Card.” Currently, only “MD5-Challenge” is supported. If the
Local User Database is used, this step is skipped.
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4. The authenticator sends an “EAP Request/MD5-Challenge” frame to the supplicant. If the
RADIUS server is used, the “EAP Request/MD5-Challenge” frame is retrieved directly from
the “RADIUS Access-Challenge” frame.
5. The supplicant responds to the “EAP Request/MD5-Challenge” by sending an “EAP
Response/MD5-Challenge” frame that encapsulates the user’s password using the MD5 hash
algorithm.
6. If the RADIUS server is used as the authentication server, the authenticator relays the “EAP
Response/MD5-Challenge” frame from the supplicant by encapsulating it into a “RADIUS
Access-Request” frame along with a “Shared Secret,” which must be the same within the
authenticator and the RADIUS server, and sends the frame to the RADIUS server. The
RADIUS server checks against the password with its database, and replies with “RADIUS
Access-Accept” or “RADIUS Access-Reject” to the authenticator. If the Local User Database
is used, the password is checked against its database and indicates success or failure to the
authenticator.
7. The authenticator sends “EAP Success” or “EAP Failure” by the received indication from the
authentication server.
Configuring IEEE 802.1X
802.1X
Setting
Enable/Disable
Description
Factory Default
Click the checkbox(es) under the 802.1X column to
enable IEEE 802.1X for one or more ports. All end
stations must enter usernames and passwords before
access to these ports is allowed.
Disable
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Database Option
Setting
Description
Factory Default
Local
(Max. 32 users)
Select this option when setting the Local User Database Local
as the authentication database.
Radius
Select this option to set an external RADIUS server as
the authentication database. The authentication
mechanism is “EAP-MD5.”
Local
Radius, Local
Select this option to make using an external RADIUS
server as the authentication database the first priority.
The authentication mechanism is “EAP-MD5.” The first
priority is to set the Local User Database as the
authentication database.
Local
Radius Server
Setting
Description
Factory Default
IP address or
domain name
The IP address or domain name of the RADIUS server localhost
Server Port
Setting
Description
Factory Default
Numerical
The UDP port of the RADIUS Server
1812
Shared Key
Setting
Description
Factory Default
alphanumeric
(Max. 40
characters)
A key to be shared between the external RADIUS server None
and EDS-726. Both ends must be configured to use the
same key.
Re-Auth Period
Setting
Description
Factory Default
Enable/Disable
Select to require re-authentication of the client after a
preset time period of no activity has elapsed.
Disable
Re-Auth
Setting
Description
Factory Default
Numerical
(60-65535 sec.)
Specify how frequently the end stations need to reenter 3600 seconds
usernames and passwords in order to stay connected.
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802.1X Re-Authentication
Featured Functions
EDS-726 can force connected devices to be re-authorized manually.
802.1X Re-Authentication
Setting
Description
Factory Default
Enable/Disable
Click the check box to enable 802.1X Re-Authentication Disable
Local User Database Setup
When setting the Local User Database as the authentication database, set the database first.
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Local User Database Setup
Setting
Description
Factory Default
User Name
User Name for Local User Database
None
(Max. 30 characters)
Password
(Max. 16 characters)
Password for Local User Database
Description for Local User Database
None
None
Description
(Max. 30 characters)
The user name for the Local User Database is case-insensitive.
NOTE
802.1X Table
The port status will show authorized or unauthorized.
Static Port Lock
MOXA EDS-726 also supports adding multicast groups manually if required.
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Setting
Description
Factory Default
MAC Address
Add the static unicast MAC address into the address
table.
None
Port
Fix the static address with a dedicated port.
1-1
Using Auto Warning
Since industrial Ethernet devices are often located at the endpoints of a system, these devices will
not always know what is happening elsewhere on the network. This means that an industrial
Ethernet switch that connects to these devices must provide system maintainers with real-time
alarm messages. Even when control engineers are out of the control room for an extended period
of time, they can still be informed of the status of devices almost instantaneously when exceptions
occur. MOXA EDS-726 supports different approaches to warn engineers automatically, such as
email and relay output. It also supports two digital inputs to integrate sensors into your system to
automate alarms by email and relay output.
Configuring Email Warning
The Auto Email Warning function uses e-mail to alert the user when certain user-configured
events take place.
Three basic steps are required to set up the Auto Warning function:
1. Configuring Email Event Types
Select the desired Event types from the Console or Web Browser Event type page (a
description of each event type is given later in the Email Alarm Events setting subsection).
2. Configuring Email Settings
To configure EDS-726’s email setup from the Console interface or browser interface, enter
your Mail Server IP/Name (IP address or name), Account Name, Account Password, Retype
New Password, and the email address(es) to which warning messages will be sent.
3. Activate your settings and if necessary, test the email
After configuring and activating your EDS-726’s Event Types and Email Setup, you can use
the Test Email function to see if your e-mail addresses and mail server address have been
properly configured.
Email Alarm Events Settings
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Event Types
Featured Functions
Event Types can be divided into two basic groups: System Events and Port Events. System
Events are related to the overall function of the switch, whereas Port Events are related to the
activity of a specific port.
System Event
Switch Cold Start
Warning e-mail is sent when…
Power is cut off and then reconnected.
Switch Warm Start
EDS-726 is rebooted, such as when network
parameters are changed (IP address, subnet mask,
etc.).
Power Transition (OnÆOff)
Power Transition (OffÆOn)
DI1 (OnÆOff)
EDS-726 is powered down.
EDS-726 is powered up.
Digital Input 1 is triggered by on to off transition
Digital Input 1 is triggered by off to on transition
Digital Input 2 is triggered by on to off transition
Digital Input 2 is triggered by off to on transition
DI1 (OffÆOn)
DI2 (OnÆOff)
DI2 (OffÆOn)
Configuration Change Activated Any configuration item has been changed.
Comm. Redundancy Topology
Changed
If any Spanning Tree Protocol switches have changed
their position (applies only to the root of the tree).
If the Master of the Turbo Ring has changed or the
backup path is activated.
Authentication Failure
An incorrect password is entered.
Port Event
Warning e-mail is sent when…
Link-on
The port is connected to another device.
The port is disconnected (e.g., the cable is pulled out,
or the opposing device shuts down).
Link-off
The port’s traffic surpasses the Traffic-Threshold for
that port (provided this item is Enabled).
Traffic-Overload
Traffic-Threshold (%)
Enter a nonzero number if the port’s Traffic-Overload
item is Enabled.
A Traffic-Overload warning is sent every
Traffic-Duration seconds if the average
Traffic-Threshold is surpassed during that time
period.
Traffic-Duration (sec.)
The Traffic-Overload, Traffic-Threshold (%), and Traffic-Duration (sec.) Port Event items
are related. If you Enable the Traffic-Overload event, then be sure to enter a nonzero
Traffic-Threshold percentage, as well as a Traffic-Duration between 1 and 300 seconds.
NOTE
NOTE
Warning e-mail messages will have sender given in the form:
Moxa_EtherDevice_Switch_0001@Switch_Location
where Moxa_EtherDevice_Switch is the default Switch Name, 0001 is EDS-726’s serial number,
and Switch_Location is the default Server Location.
Refer to the Basic Settings section to see how to modify Switch Name and Switch Location.
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Featured Functions
Email Settings
Mail Server IP/Name
Setting
Description
Factory Default
IP address
The IP Address of your email server.
None
Account Name
Setting
Description
Factory Default
Max. 45 Charters Your email account.
None
Password Setting
Setting
Description
Factory Default
Disable/Enable to To reset the Password from the Web Browser interface, Disable
change Password click the Change password check-box, type the Old
Password, type the New Password, retype the New
password, and then click on Activate; Max. 45
Characters.
Old Password
New Password
Type the current password when changing the password None
Type new password when enabled to change password; None
Max. 45 Characters.
Retype Password If you type a new password in the Password field, you
will be required to retype the password in the Retype
None
new password field before updating the new password.
Email Address
Setting
Max. 30
characters
Description
Factory Default
You can set up to 4 email addresses to receive alarm
emails from EDS-726.
None
Send Test Email
After finishing with the email settings, you should first press the “Activate” button to activate
those settings, and then press the “Send Test Email” button to verify that the settings are correct.
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Featured Functions
Auto warning e-mail messages will be sent through an authentication protected SMTP server that
supports the CRAM-MD5, LOGIN, and PAIN methods of SASL (Simple Authentication and
Security Layer) authentication mechanism.
NOTE
We strongly recommend not entering your Account Name and Account Password if auto warning
e-mail messages can be delivered without using an authentication mechanism.
Configuring Relay Warning
The Auto Relay Warning function uses relay output to alert the user when certain user-configured
events take place. There are two basic steps required to set up the Relay Warning function:
1. Configuring Relay Event Types
Select the desired Event types from the Console or Web Browser Event type page (a
description of each event type is given later in the Relay Alarm Events setting subsection).
2. Activate your settings
After completing the configuration procedure, you will need to activate your EDS-726’s
Relay Event Types.
Relay Alarm Events Settings
Event Types
Event Types can be divided into two basic groups: System Events and Port Events. System
Events are related to the overall function of the switch, whereas Port Events are related to the
activity of a specific port.
MOXA EDS-726 supports two relay outputs. You can configure which relay output is related to
which events. This helps administrators identify the importance of the different events.
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Featured Functions
Warning Relay output is triggered when…
System Event
Power Transition (OnÆOff)
Power Transition (OffÆOn)
DI1 (OnÆOff)
EDS-726 is powered on.
EDS-726 is powered down.
Digital Input 1 is triggered by on to off transition
Digital Input 1 is triggered by off to on transition
Digital Input 2 is triggered by on to off transition
Digital Input 2 is triggered by off to on transition
DI1 (OffÆOn)
DI2 (OnÆOff)
DI2 (OffÆOn)
Port Event
Warning e-mail is sent when…
Link-on
The port is connected to another device.
The port is disconnected (e.g., the cable is pulled out,
or the opposing device shuts down).
Link-off
The port’s traffic surpasses the Traffic-Threshold for
that port (provided this item is Enabled).
Traffic-Overload
Traffic-Threshold (%)
Enter a nonzero number if the port’s Traffic-Overload
item is Enabled.
A Traffic-Overload warning is sent every
Traffic-Duration seconds if the average
Traffic-Threshold is surpassed during that time
period.
Traffic-Duration (sec.)
The Traffic-Overload, Traffic-Threshold (%), and Traffic-Duration (sec) Port Event items
are related. If you Enable the Traffic-Overload event, then be sure to enter a nonzero
Traffic-Threshold percentage, as well as a Traffic-Duration between 1 and 300 seconds.
NOTE
Override relay alarm settings
Click the checkbox to override the relay warning setting temporarily. Releasing the relay output
will allow administrators to fix any problems with the warning condition.
Relay Alarm List
Use this table to see if any relay alarms have been issued.
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Using Line-Swap-Fast-Recovery
The Line-Swap Fast Recovery function, which is enabled by default, allows EDS-726 to return to
normal operation extremely quickly after devices are unplugged and then re-plugged into different
ports. The recovery time is on the order of a few milliseconds (compare this with standard
commercial switches for which the recovery time could be on the order of several minutes). To
disable the Line-Swap Fast Recovery function, or to re-enable the function after it has already
been disabled, access either the Console utility’s Line-Swap recovery page, or the Web Browser
interface’s Line-Swap fast recovery page, as shown below.
Configuring Line-Swap Fast Recovery
Enable Line-Swap-Fast-Recovery
Setting
Description
Factory Default
Enable/Disable
Check-mark the check box to enable the
Line-Swap-Fast-Recovery function
Enable
Using Set Device IP
To reduce the effort required to set up IP addresses, the EDS-726 series comes equipped with
DHCP/BootP server and RARP protocol to set up IP addresses of Ethernet-enabled devices
automatically.
When enabled, the Set device IP function allows EDS-726 to assign specific IP addresses
automatically to connected devices that are equipped with DHCP Client or RARP protocol. In
effect, EDS-726 acts as a DHCP server by assigning a connected device with a specific IP address
stored in its internal memory. Each time the connected device is switched on or rebooted,
EDS-726 sends the device the desired IP address.
Take the following steps to use the Set device IP function:
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STEP 1—set up the connected devices
Featured Functions
Set up those Ethernet-enabled devices connected to
EDS-726 for which you would like IP addresses to be
assigned automatically. The devices must be
configured to obtain their IP address automatically.
The devices’ configuration utility should include a
setup page that allows you to choose an option
similar to Obtain an IP address automatically.
For example, Windows’ TCP/IP Properties window
is shown at the right. Although your device’s
configuration utility may look quite a bit different,
this figure should give you some idea of what to look
for.
You also need to decide which of EDS-726’s ports
your Ethernet-enabled devices will be connected to.
You will need to set up each of these ports separately,
as described in the following step.
STEP 2
Configure EDS-726’s Set device IP function, either from the Console utility or from the Web
Browser interface. In either case, you simply need to enter the Desired IP for each port that needs
to be configured.
STEP 3
Be sure to activate your settings before exiting.
•
•
When using the Web Browser interface, activate by clicking on the Activate button.
When using the Console utility, activate by first highlighting the Activate menu option, and
then press Enter. You should receive the Set device IP settings are now active! (Press any
key to continue) message.
Configuring Set Device IP
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Desired IP Address
Setting
Description
Set the desired IP of connected devices.
Factory Default
IP Address
None
Using Diagnosis
MOXA EDS-726 provides two important tools for administrators to diagnose network systems.
Mirror Port
The Mirror port function can be used to monitor data being transmitted through a specific port.
This is done by setting up another port (the mirror port) to receive the same data being transmitted
from, or both to and from, the port under observation. This allows the network administrator to
“sniff” the observed port and thus keep tabs on network activity.
Take the following steps to set up the Mirror Port function:
STEP 1
Configure EDS-726’s Mirror Port function from either the Console utility or Web Browser
interface. You will need to configure three settings:
Monitored Port Select the port number of the port whose network activity will be
monitored.
Mirror Port
Select the port number of the port that will be used to monitor the
activity of the monitored port.
Watch Direction Select one of the following two watch direction options:
y
y
Output data stream
Select this option to monitor only those data packets being sent out
through EDS-726’s port.
Bi-directional
Select this option to monitor data packets both coming into, and
being sent out through, EDS-726’s port.
STEP 2
Be sure to activate your settings before exiting.
•
•
When using the Web Browser interface, activate by clicking on the Activate button.
When using the Console utility, activate by first highlighting the Activate menu option, and
then press Enter. You should receive the Mirror port settings are now active! (Press any
key to continue) message.
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Featured Functions
Ping
The Ping function uses the ping command to give users a simple but powerful tool for
troubleshooting network problems. The function’s most unique feature is that even though the
ping command is entered from the user’s PC keyboard, the actual ping command originates from
EDS-726 itself. In this way, the user can essentially “sit on top of EDS-726” and send ping
commands out through its ports.
To use the Ping function, type in the desired IP address, and then press Enter from the Console
utility, or click on Ping when using the Web Browser interface.
Using Monitor
You can monitor statistics in real time from EDS-726’s web console and serial console.
Monitor by Switch
Access the Monitor by selecting “System” from the left selection bar. Monitor by System allows
the user to view a graph that shows the combined data transmission activity of all of EDS-726’s 8
ports. Click on one of the four options—All Packets, TX Packets, RX Packets, or Error
Packets—to view transmission activity of specific types of packets. Recall that TX Packets are
packets sent out from EDS-726, RX Packets are packets received from connected devices, and
Error Packets are packets that did not pass TCP/IP’s error checking algorithm. The All Packets
option displays a graph that combines TX, RX, and Error Packet activity. The four graphs (All
Packets, TX Packets, RX Packets, and Error Packets) have the same form, so we only show the All
Packets graph. The graph displays data transmission activity by showing Packets/s (i.e., packets
per second, or pps) versus sec. (seconds). In fact, three curves are displayed on the same graph:
Uni-cast packets (in red color), Multi-cast packets (in green color), and Broad-cast packets (in
blue color). The graph is updated every few seconds, allowing the user to analyze data
transmission activity in real-time.
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Featured Functions
Monitor by Port
Access the Monitor by Port function by selecting ALL Ports or Porti, in which i= 1, 2, …, 8,
from the left pull-down list. The Porti options are identical to the Monitor by System function
discussed above, in that users can view graphs that show All Packets, TX Packets, RX Packets, or
Error Packets activity, but in this case, only for an individual port. The All Ports option is
essentially a graphical display of the individual port activity that can be viewed with the Console
Monitor function discussed above. The All Ports option shows three vertical bars for each port.
The height of the bar represents Packets/s for the type of packet, at the instant the bar is being
viewed. That is, as time progresses, the height of the bar moves up or down so that the user can
view the change in the rate of packet transmission. The red colored bar shows Uni-cast packets,
the green colored bar shows Multi-cast packets, and the blue colored bar shows Broad-cast
packets. The graph is updated every few seconds, allowing the user to analyze data transmission
activity in real-time.
Using the MAC Address Table
This section explains the information provided by EDS-726’s MAC address table.
The MAC Address table can be configured to display the following EDS-726 MAC address
groups.
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ALL
Select this item to show all EDS-726 MAC addresses
Select this item to show all EDS-726 Learned MAC addresses
ALL Learned
ALL Static Lock
ALL Static
Select this item to show all EDS-726 Static Lock MAC addresses
Select this item to show all EDS-726 Static/Static Lock /Static
Multicast MAC addresses
ALL Static
Multicast
Select this item to show all EDS-726 Static Multicast MAC
addresses
Port x
Select this item to show all MAC addresses of dedicated ports
The table will display the following information:
MAC
Type
This field shows the MAC address
This field shows the type of this MAC address
This field shows the port that this MAC address belongs to
This field shows the priority of this MAC address
Port
Priority
Using Event Log
Bootup
Date
This field shows how many times the EDS-726 has been rebooted or cold started.
The date is updated based on how the current date is set in the “Basic Setting” page.
The time is updated based on how the current time is set in the “Basic Setting” page.
The system startup time related to this event.
Time
System
Startup
Time
Events
Events that have occurred.
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4
Chapter
4
EDS Configurator GUI
EDS Configurator is a comprehensive Windows-based GUI that is used to configure and maintain
multiple EDS-726 switches. A suite of useful utilities is available to help you locate EDS-726
switches attached to the same LAN as the PC host (regardless of whether or not you know the IP
addresses of the switches), connect to an EDS-726 whose IP address is known, modify the
network configurations of one or multiple EDS-726 switches, and update the firmware of one or
more EDS-726 switches. EDS Configurator is designed to provide you with instantaneous control
of all of your EDS-726 switches, regardless of location. You may download the EDS Configurator
software from Moxa’s website free of charge.
This chapter includes the following sections:
‰
‰
‰
‰
‰
‰
‰
‰
Starting EDS Configurator
Broadcast Search
Search by IP address
Upgrade Firmware
Modify IP Address
Export Configuration
Import Configuration
Unlock Server
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EDS Configurator GUI
Starting EDS Configurator
To start EDS Configurator, locate and then run the executable file edscfgui.exe.
You may download the EDS Configurator software from Moxa’s website at www.moxa.com.
NOTE
For example, if the file was placed on the Windows desktop, it should appear as follows. Simply
double click on the icon to run the program.
The MOXA EtherDevice Server Configurator window will open, as shown below.
Broadcast Search
Use the Broadcast Search utility to search the LAN for all EDS-726 switches that are connected to
the LAN. Note that since the search is done by MAC address, Broadcast Search will not be able to
locate MOXA EtherDevice Servers connected outside the PC host’s LAN. Start by clicking on the
Broadcast Search icon
, or by selecting Broadcast Search under the List Server menu.
The Broadcast Search window will open, displaying a list of all switches located on the network,
as well as the progress of the search.
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EDS Configurator GUI
Once the search is complete, the Configurator window will display a list of all switches that were
located.
Search by IP address
This utility is used to search for EDS-726 switches one at a time. Note that the search is conducted
by IP address, so you should be able to locate any EDS-726 that is properly connected to your
LAN, WAN, or even the Internet. Start by clicking on the Specify by IP address icon
, or by
selecting Specify IP address under the List Server menu.
The Search Server with IP Address window will open. Enter the IP address of the switch you
wish to search for, and then click OK.
Once the search is complete, the Configurator window will add the switch to the list of switches.
Upgrade Firmware
Keep your EDS-726 up to date with the latest firmware from Moxa. Take the following steps to
upgrade the firmware:
1. Download the updated firmware (*.rom) file from the Moxa website (www.moxa.com).
2. Click on the switch (from the MOXA EtherDevice Server Configurator window) whose
firmware you wish to upgrade to highlight it.
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3. Click on the Upgrade Firmware toolbar icon
EDS Configurator GUI
, or select Upgrade under the Firmware
menu. If the switch is Locked, you will be prompted to input the switch’s User Name and
Password.
4. Use the Open window to navigate to the folder that contains the firmware upgrade file, and
then click on the correct “*.rom” file (eds.rom in the example shown below) to select the file.
Click on Open to activate the upgrade process.
Modify IP Address
You may use the Modify IP Address function to reconfigure EDS-726’s network settings. Start by
clicking on the Modify IP address icon
, or by selecting Modify IP address under the
Configuration menu.
The Setup Configuration window will open. Checkmark the box to the left of those items that
you wish to modify, and then Disable or Enable DHCP, and enter IP Address, Subnet mask,
Gateway, and DNS IP. Click OK to accept the changes to the configuration.
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EDS Configurator GUI
Export Configuration
The Export Configuration utility is used to save the entire configuration of a particular EDS-726
to a text file. Take the following steps to export a configuration:
1. Highlight the switch (from the Server list in the Configurator window’s left pane), and then
click on the Export toolbar icon
or select Export Configuration from the
Configuration menu. Use the Open window to navigate to the folder in which you want to
store the configuration, and then type the name of the file in the File name input box. Click on
Open.
2. Click on OK when the Export configuration to file OK message appears.
3. You may use a standard text editor, such as Notepad under Windows, to view and modify the
newly created configuration file.
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EDS Configurator GUI
Import Configuration
The Import Configuration function is used to import an entire configuration from a text file to
EDS-726. This utility can be used to transfer the configuration from one EDS-726 to another, by
first using the Export Configuration function (described in the previous section) to save a switch
configuration to a file, and then using the Import Configuration function. Take the following steps
to import a configuration:
1. Highlight the server (from the MOXA EtherDevice Switch list in the Configurator window’s
left pane), and then click on the Import toolbar icon
, or select Import Configuration
from the Configuration menu.
2. Use the Open window to navigate to the text file that contains the desired configuration. Once
the file is selected, click on Open to initiate the import procedure.
3. The Setup Configuration window will be displayed, with a special note attached at the
bottom. Parameters that have been changed will be activated with a checkmark. You may
make more changes if necessary, and then click on OK to accept the changes.
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EDS Configurator GUI
4. Click on Yes in response to the following warning message to accept the new settings.
Unlock Server
The Unlock Server function is used to open a password protected switch so that the user can
modify its configuration, import/export a configuration, etc. There are six possible responses under
the Status column. The Status of an EDS-726 indicates how the switch was located (by MOXA
EtherDevice Switch Configurator), and what type of password protection it has.
The six options are as follows (note that the term Fixed is borrowed from the standard fixed IP
address networking terminology):
y
Locked
The switch is password protected, “Broadcast Search” was used to locate it, and the password
has not yet been entered from within the current Configurator session.
y
Unlocked
The switch is password protected, “Broadcast Search” was used to locate it, and the password
has been entered from within the current Configurator session. Henceforth during this
Configurator session, activating various utilities for this switch will not require re-entering the
server password.
y
y
y
Blank
EDS-726 is not password protected, and “Broadcast Search” was used to locate it.
Fixed
EDS-726 is not password protected, and “Search by IP address” was used to locate it manually.
Locked Fixed
EDS-726 is password protected, “Search by IP address” was used to locate it manually, and the
password has not yet been entered from within the current Configurator session.
y
Unlocked Fixed
EDS-726 is password protected, “Search by IP address” was used to locate it manually, and
the password has been entered from within the current Configurator session. Henceforth
during this Configurator session, activating various utilities for this EDS-726 will not require
re-entering the server password.
Follow the steps given below to unlock a locked EDS-726 (i.e., an EDS-726 with Status “Locked”
or “Locked Fixed”). Highlight the server (from the MOXA EtherDevice Switch list in the
Configurator window’s left pane), and then click on the Unlock toolbar icon
, or select Unlock
from the Configuration menu.
1. Enter the switch’s User Name and Password when prompted, and then click OK.
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EDS Configurator GUI
2. When the Unlock status window reports Progress as OK, click on the Close button in the
upper right corner of the window.
3. The status of the switch will now read either Unlocked or Unlocked Fixed.
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A
Appendix
A
MIB Groups
MOXA EDS-726 comes with built-in SNMP (Simple Network Management Protocol) agent
software that supports cold/warm start trap, line up/down trap, and RFC 1213 MIB-II.
The standard MIB groups that MOXA EDS-726 series support are:
MIB II.1 – System Group
sysORTable
MIB II.2 – Interfaces Group
ifTable
MIB II.4 – IP Group
ipAddrTable
ipNetToMediaTable
IpGroup
IpBasicStatsGroup
IpStatsGroup
MIB II.5 – ICMP Group
IcmpGroup
IcmpInputStatus
IcmpOutputStats
MIB II.6 – TCP Group
tcpConnTable
TcpGroup
TcpStats
MIB II.7 – UDP Group
udpTable
UdpStats
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MIB II.10 – Transmission Group
MIB Groups
dot3
dot3StatsTable
MIB II.11 – SNMP Group
SnmpBasicGroup
SnmpInputStats
SnmpOutputStats
MIB II.17 – dot1dBridge Group
dot1dBase
dot1dBasePortTable
dot1dStp
dot1dStpPortTable
dot1dTp
dot1dTpFdbTable
dot1dTpPortTable
dot1dTpHCPortTable
dot1dTpPortOverflowTable
pBridgeMIB
dot1dExtBase
dot1dPriority
dot1dGarp
qBridgeMIB
dot1qBase
dot1qTp
dot1qFdbTable
dot1qTpPortTable
dot1qTpGroupTable
dot1qForwardUnregisteredTable
dot1qStatic
dot1qStaticUnicastTable
dot1qStaticMulticastTable
dot1qVlan
dot1qVlanCurrentTable
dot1qVlanStaticTable
dot1qPortVlanTable
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MIB Groups
EDS-726 also provides a private MIB file, located in the file “MOXA-EDS726-MIB.my” on the
EDS-726 Series utility CD-ROM.
Public Traps:
1. Cold Start
2. Link Up
3. Link Down
4. Authentication Failure
5. dot1dBridge New Root
6. dot1dBridge Topology Changed
Private Traps:
1. Configuration Changed
2. Power On
3. Power Off
4. Traffic Overloaded
5. Turbo Ring Topology Changed
6. Turbo Ring Coupling Port Changed
7. Turbo Ring Master Mismatch
8. CF Save
9. CF Load
10. Module Inserted
11. Module Removed
A-3
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B
Appendix
B
Specifications
Modular Managed Switch System, EDS-72610G
Modular Managed Switch System with 6 slots, and up to 26 ports.
PWR1
PWR2 FAULT
SPEED FDX/HDX
STAT
LNK/ACT
RING COUPLER
MASTER COUPLER CF
PORT
PORT
MODE
EtherDevice Switch
EDS-726
Technology
Standards
IEEE802.3, 802.3u, 802.3x, 802.1D, 802.1w, 802.1Q,
802.1p, 802.1X, 802.3ad, 802.3z
Protocols
MIB
IGMP Snooping, GMRP, GVRP, SNMP V1/V2C/V3, DHCP
Server/Client, BOOTP, TFTP, SNTP, SMTP, RARP, RMON
and EDS-SNMP OPC Server Pro (Optional)
MIB-II, Ethernet-Like MIB, P-BRIDGE MIB, Q-BRIDGE
MIB, Bridge MIB, RSTP MIB, RMON MIB Groups 1, 2.3, 9
(available soon)
Flow Control
IEEE802.3x flow control/back pressure
Interface
Fast Ethernet
6 slots for any combination of 4-port Interface Modules with
10/100BaseT(X) or 100BaseFX
Gigabit Ethernet
2 sockets for any combination of 1-port Interface Modules
with 10/100/1000BaseT(X), 1000BaseSX, 1000BaseLX,
1000BaseLHX, 1000BaseZX
CompactFlash Interface
Console
Present
RS-232 (RJ45)
System LED Indicators
Module LED Indicators
STAT, PWR1, PWR2, FAULT, MASTER, COUPLER, CF
LNK/ACT, FDX/HDX, RING PORT, COUPLER, PORT,
SPEED
Alarm Contact
Two relay outputs with current carrying capacity of 1A @ 24
VDC
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Specifications
Two inputs with the same ground, but electrically isolated
Digital Inputs
from the electronics.
For state “1”: +13 to +30V
For state “0”: -30 to +3V
Max. input current: 8 mA
Power
Input Voltage
Connection
24 VDC (12 to 45 VDC), redundant dual inputs
Two removable 6-pin terminal blocks
Power Consumption
EDS-72610G
IM-4TX
21.5W
2.5W
IM-2MSC/2TX 5W
IM-2MST/2TX 5W
IM-2SSC/2TX 5W
IM-4MSC
IM-4MST
IM-4SSC
7.2W
7.2W
7.2W
IM-1LSC/3TX 4W
IM-1GTX
2.5W
IM-1GSXSC
IM-1GLXSC
1.5W
1.5W
IM-1GLHXSC 1.5W
IM-1GZXSC
1.5W
Overload Current Protection Present
Reverse Polarity Protection Present
Mechanical
Casing
IP30 protection
Dimensions
Installation
362 x 146 x 128 mm (W x H x D)
DIN-Rail, Wall Mounting (optional kit)
Gigabit Ethernet Interface Module, IM series
IM-1GTX:
Interface Module with 1 10/100/1000BaseT(X) port, RJ45 connector.
IM-1GSXSC:
IM-1GLXSC:
Interface Module with 1 1000BaseSX port, SC connector.
Interface Module with 1 1000BaseLX port, SC connector.
IM-1GLHXSC: Interface Module with 1 1000BaseLHX port, SC connector, 40 km.
IM-1GZXSC:
Interface Module with 1 1000BaseZX port, SC connector, 80 km.
IM-1GTX
IM-1GSXSC
IM-1GTX
IM-1GSXSC,
IM-1GLXSC,
IM-1GLHXSC,
IM-1GZXSC
B-2
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EDS-726 Series User’s Manual
Specifications
Interface
LED Indicators
RJ45 Ports
Port Status
10/100/1000BaseT(X) auto negotiation speed, and auto
MDI/MDI-X connection
Distance
100 m
Fiber Ports
1000BaseSX/LX/LHX/ZX (SC connector)
Optical Fiber
Distance
Multi mode
IM-1GSXSC
0 to 500 m, 850 nm (50/125 μm, 400 MHz*km)
0 to 275 m, 850 nm (62.5/125 μm, 200 MHz*km)
IM-1GLXSC
0 to 1100 m, 1310 nm (50/125 μm, 800 MHz*km)
0 to 550 m, 1310 nm (62.5/125 μm, 500 MHz*km)
Single mode
IM-1GLXSC
0 to 10 km, 1310 nm (9/125 μm, 3.5 PS/(nm*km))
IM-1GLHXSC
0 to 40 km, 1310 nm (9/125 μm, 19 PS/(nm*km)) TBD
IM-1GZXSC
0 to 80 km, 1550 nm (9/125 μm, 19 PS/(nm*km)) TBD
Min. TX Output
1M-GSX
-9.5 dB
-9.5 dB
-4 dB
1M-1GLX
1M-1GLHX
1M-1GZX
0 dB
Max. TX Output
1M-GSX
-4 dB
-3 dB
+3 dB
+5 dB
1M-1GLX
1M-1GLHX
1M-1GZX
Sensitivity
1M-GSX
0 to -18 dB
-3 to -20 dB
-3 to -23 dB
-3 to -23 dB
1M-1GLX
1M-1GLHX
1M-1GZX
Mechanical
Dimensions
24 x 66 x 101 mm (W x H x D)
Fast Ethernet Interface Module, IM series
IM-4TX:
Interface Module with 4 10/100BaseT(X) ports, RJ45 connectors.
IM-4MSC:
IM-4MST:
IM-4SSC:
Interface Module with 4 multi mode 100BaseFX ports, SC connectors.
Interface Module with 4 multi mode 100BaseFX ports, ST connectors.
Interface Module with 4 single mode 100BaseFX ports, 40 km SC connectors.
IM-2MSC/2TX: Interface Module with 2 multi mode 100BaseFX ports, SC connectors, and 2
10/100BaseT(X) ports, RJ45 connectors.
B-3
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EDS-726 Series User’s Manual
Specifications
IM-2MST/2TX: Interface Module with 2 multi mode 100BaseFX ports, ST connectors, and 2
10/100BaseT(X) ports, RJ45 connectors.
IM-2SSC/2TX: Interface Module with 2 single mode 100BaseFX ports, 40 km SC connectors,
and 2 10/100BaseT(X) ports, RJ45 connectors.
IM-1LSC/3TX: Interface Module with 1 single mode 100BaseFX port, 80 km SC connector and
3 10/100BaseT(X) ports, RJ45 connectors.
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
P3
P1
P4
P2
PWR
PWR
PWR
PWR
PWR
PWR
3
1
4
2
3
4
2
3
4
3
4
4
3
1
4
2
3
TX
RX
TX
RX
TX
RX
TX
RX
TX
RX
1
1
2
1
2
1
2
TX
RX
TX
RX
IM-4TX
IM-4MSC
IM-4MST
IM-2MSC/2TX
IM-2MST/2TX
IM-1LSC/3TX
IM-4TX
IM-4MSC,
IM-4SSC,
IM-4MST
IM-2MSC/
2TX
IM-2MST/
2TX
IM-1LSC/
3TX
IM-2SSC/
2TX
Interface
LED Indicators
RJ45 Ports
PWR, P1, P2, P3, P4 port status
10/100/1000BaseT(X) auto negotiation speed, F/H duplex
mode, and auto MDI/MDI-X connection
Distance
100 m
Fiber Ports
100BaseFX ports (SC/ST connector)
Optical Fiber
Distance
Multi mode:
IM-4MSC, IM-4MST, IM-2MSC/2TX, IM-2MST/2TX
0 to 5 km, 1310 nm (50/125 μm, 800 MHz*km)
0 to 4 km, 1310 nm (62.5/125 μm, 500 MHz*km)
Single mode:
IM-4SSC
0 to 40 km, 1310 nm (9/125 μm, 3.5 PS/(nm*km))
IM-1LSC/3TX
0 to 80 km, 1550 nm (9/125 μm, 19 PS/(nm*km))
Min. TX Output
Multi mode:
-20 dBm
Single mode:
0 to 40 km, -5 dBm
0 to 80 km, -5 dBm
Max. TX Output
Multi mode:
-14 dBm
Single mode:
0 to 40 km, 0 dBm
0 to 80 km, 0 dBm
Sensitivity
Multi mode:
Single mode:
-34 to -30 dBm
-36 to -32 dBm
B-4
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EDS-726 Series User’s Manual
Specifications
Mechanical
Casing
IP30 protection
Dimensions
40 x 130 x 100 mm (W x H x D)
Environmental
Operating Temperature
Storage Temperature
0 to 60°C (32 to 140°F)
-40 to 85°C (-40 to 185°F)
Ambient Relative Humidity 5 to 95% (non-condensing)
Regulatory Approvals
Safety
UL60950, UL 508, CSA C22.2 No. 60950, EN60950
(Pending)
Hazardous Location
UL/cUL Class I, Division 2, Groups A, B, C and D
(Pending)
ATEX Class I, Zone 2, EEx nC IIC (Pending)
EMI
FCC Part 15, CISPR (EN55022) class A
EMS
EN61000-4-2 (ESD), Level 3
EN61000-4-3 (RS), Level 3
EN61000-4-4 (EFT), Level 3
EN61000-4-5 (Surge), Level 3
EN61000-4-6 (CS), Level 3
EN61000-4-8
EN61000-4-11
EN61000-4-12
Shock
IEC60068-2-27
IEC60068-2-32
IEC60068-2-6
Free Fall
Vibration
WARRANTY
5 years
B-5
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C
Appendix
C
Service Information
This appendix shows you how to contact Moxa for information about this and other products, and
how to report problems.
In this appendix, we cover the following topics.
‰
‰
‰
MOXA Internet Services
Problem Report Form
Product Return Procedure
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EDS-726 Series User’s Manual
Service Information
MOXA Internet Services
Customer satisfaction is our number one concern, and to ensure that customers receive the full
benefit of our products, Moxa Internet Services has been set up to provide technical support, driver
updates, product information, and user’s manual updates.
The following services are provided
...............................[email protected]
(The Americas)
World Wide Web (WWW) Site for product information:
...............................http://www.moxa.com
C-2
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EDS-726 Series User’s Manual
Service Information
Problem Report Form
MOXA EDS-726 Series
Customer name:
Company:
Tel:
Fax:
Email:
Date:
Serial Number: _________________
Problem Description: Please describe the symptoms of the problem as clearly as possible, including any error
messages you see. A clearly written description of the problem will allow us to reproduce the symptoms, and
expedite the repair of your product.
C-3
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EDS-726 Series User’s Manual
Service Information
Product Return Procedure
For product repair, exchange, or refund, the customer must:
Provide evidence of original purchase.
Obtain a Product Return Agreement (PRA) from the sales representative or dealer.
Fill out the Problem Report Form (PRF). Include as much detail as possible for a shorter
product repair time.
Carefully pack the product in an anti-static package, and send it, pre-paid, to the dealer. The
PRA should be visible on the outside of the package, and include a description of the problem,
along with the return address and telephone number of a technical contact.
C-4
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