ADC Network Card 600F User Manual
Megabit Modem  
Megabit Modem 400F, 500L, 600F, and  
700F User Manual  
Version 3.2.X  
Catalog Number  
MMD4090I1 Issue 1  
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About This User Manual  
ABOUT THIS USER MANUAL  
Use this manual to install and configure the Megabit Modem® 400F, 500L, 600F, and 700F.  
This manual provides instruction on:  
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information you will need to configure the modem  
unpacking and inspecting the modem for installation  
installing the modem  
setting up parameters for your applications that will be used to configure the modem  
configuring system parameters  
configuring sessions between the modem and a service provider  
monitoring and troubleshooting the modem  
Chapter 10 provides a reference for the technology implemented in the Megabit Modem 400F,  
500L, 600F, and 700F. This chapter covers information about ATM over ADSL transmission,  
operating modes of PPP or bridging/routing, and SNMP management.  
IP addresses used in this manual are for example only. You will acquire your own addresses  
from the service provider and your information services coordinator to configure the Megabit  
Modem 400F, 500L, 600F, and 700F. However, you will use the IP address specified in  
“Accessing the Modem Web Pages” on page 27 to access the Megabit Modem 400F, 500L,  
600F, and 700F from a Web browser.  
DOCUMENT CONVENTIONS  
Two types of messages, identified by icons, appear in the text.  
Notes contain information about special circumstances.  
Cautions indicate the possibility of equipment damage or the possibility of  
personal injury.  
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Product Certifications  
PRODUCT CERTIFICATIONS  
FCC Class B Compliance  
This equipment has been tested and found to comply with the limits for a Class B digital device,  
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection  
against harmful interference in a residential installation. This equipment generates, uses and can  
radiate radio frequency energy and, if not installed and used in accordance with the instructions,  
may cause harmful interference to radio communications. However, there is no guarantee that  
interference will not occur in a particular installation.  
If this equipment does cause harmful interference to radio or television reception, which can be  
determined by turning the equipment off and on, the user is encouraged to try to correct the  
interference by one or more of the following measures:  
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Reorient or relocate the receiving antenna.  
Increase the separation between the equipment and receiver.  
Connect the equipment into an outlet on a circuit different from that to which the receiver  
is connected.  
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Consult the dealer or an experienced radio/TV technician for help.  
UL  
CE  
This product meets all safety requirements per UL-1950 standard.  
This product meets all EMC and safety requirements per EN 300 386-2 and IEC 950  
(EN60950).  
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Table of Contents  
TABLE OF CONTENTS  
Chapter 1: About The Product...............................................................................................1  
Megabit Modem 400F .........................................................................................................2  
Megabit Modem 500L.........................................................................................................4  
Megabit Modem 600F .........................................................................................................5  
Megabit Modem 700F .........................................................................................................6  
Chapter 2: What You Need To Start .....................................................................................9  
Verify Package Contents .....................................................................................................9  
Requirements For Your System ........................................................................................10  
Requirements For The Installation Site.............................................................................10  
Location for Modem Installation ........................................................................10  
Phone Service......................................................................................................13  
What You Need from Your Service Provider ...................................................................13  
What You Will Choose .....................................................................................................14  
Configuration ......................................................................................................14  
Power Cable ........................................................................................................14  
Chapter 3: Installing the Modem .........................................................................................15  
Attaching the Feet..............................................................................................................16  
Setting the MDI/MDI-X Switch........................................................................................17  
Installing Cabling ..............................................................................................................18  
Setting Up ADSL Service .................................................................................................20  
Checking LED Indications ................................................................................................20  
Connecting Phone Service.................................................................................................21  
Chapter 4: Setting Up For Configuration ...........................................................................23  
Setting Up the PC To Configure the Modem ....................................................................24  
Configuring a Web Browser..............................................................................................25  
Accessing the Modem Web Pages.....................................................................................27  
Saving the Configuration...................................................................................................28  
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Table of Contents  
Saving the Configuration to NVRAM.................................................................29  
Resetting the Modem...........................................................................................30  
Resetting the Modem to Factory Defaults...........................................................31  
Chapter 5: Configuring System Settings .............................................................................35  
Defining TFTP Parameters ................................................................................................36  
Defining SNMP Parameters...............................................................................................38  
Defining Static NAT Entries..............................................................................................40  
Configuring Static MAC Entries .......................................................................................42  
Display Static MAC Entries................................................................................42  
Add a Static MAC Entry .....................................................................................42  
Modify a Static MAC Entry ................................................................................42  
Delete a Static MAC Entry..................................................................................43  
Configuring Static Routes..................................................................................................44  
Display Static Routes ..........................................................................................44  
Add a Static Route...............................................................................................44  
Modify a Static Route..........................................................................................44  
Delete a Static Route ...........................................................................................45  
Configuring System Security.............................................................................................46  
Admin IP Address ...............................................................................................46  
RS-232 MGMT Port............................................................................................47  
Selecting the System Mode of Operation ..........................................................................48  
Chapter 6: Configuring PPP Sessions..................................................................................51  
Selecting Configuration Parameters ..................................................................................52  
Setting Up the PPP Mode (700F Only) .............................................................................52  
Configuring the WAN PPP Sessions.................................................................................53  
Add a PPP over ATM WAN Session..................................................................54  
Modify a PPP over ATM WAN Session.............................................................57  
Delete a PPP over ATM WAN Session ..............................................................57  
Configuring the LAN.........................................................................................................58  
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Table of Contents  
Configure Modem Parameters ............................................................................58  
Saving the Configuration ....................................................................................59  
Assigning LAN Users to PPP Sessions.............................................................................60  
Add a User Assignment ......................................................................................60  
Delete a User Assignment:..................................................................................61  
Activating and Deactivating Sessions ...............................................................................62  
Chapter 7: Configuring Bridging/Routing Sessions...........................................................63  
Setting Up the Bridging/Routing Mode (700F Only)........................................................64  
Configuring the WAN Bridging/Routing Sessions ...........................................................65  
Add a Bridging/Routing WAN Session..............................................................66  
Modify a Bridging/Routing WAN Session.........................................................68  
Delete a Bridging/Routing WAN Session...........................................................68  
Configuring the LAN ........................................................................................................69  
Configure Modem Parameters ............................................................................69  
Saving the Configuration ....................................................................................70  
Activating and Deactivating Sessions ...............................................................................71  
Chapter 8: Viewing Statistics ...............................................................................................73  
Viewing ADSL Status .......................................................................................................73  
Viewing Network Statistics...............................................................................................75  
LAN Statistics .....................................................................................................75  
WAN Statistics....................................................................................................76  
Chapter 9: Maintenance and Troubleshooting...................................................................77  
Maintenance ......................................................................................................................77  
Updating Software ..............................................................................................77  
Using the RS-232 Management Port...................................................................80  
Setting Up the PC to Request an IP Address.....................................................................83  
Troubleshooting.................................................................................................................84  
Chapter 10: Technical Reference.........................................................................................85  
Transmission on the Wide Area Network .........................................................................85  
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Table of Contents  
ADSL...................................................................................................................85  
ATM ....................................................................................................................86  
System Mode Encapsulation..............................................................................................87  
PPP ......................................................................................................................87  
Bridging...............................................................................................................88  
Routing ................................................................................................................90  
Encapsulation for RFC 1483 Bridging/Routing..................................................90  
Management Protocols ......................................................................................................91  
SNMP ..................................................................................................................91  
MIB and Trap Support ........................................................................................92  
DNS Resolution.................................................................................................................93  
TFTP Server.......................................................................................................................93  
Appendix A: Specifications and Data ...................................................................................95  
WAN Interface Specifications...........................................................................................95  
Encapsulation.....................................................................................................................96  
LAN Interface....................................................................................................................97  
Physical Specifications ......................................................................................................97  
Power Supply.....................................................................................................................97  
Environmental....................................................................................................................97  
Compliance ........................................................................................................................98  
RFCs ..................................................................................................................................98  
MIBs ..................................................................................................................................98  
Rate vs. Reach....................................................................................................................99  
Hardware..........................................................................................................................100  
Installation Kit...................................................................................................100  
Connector Pinouts .............................................................................................101  
Appendix B: Technical Assistance and Returns ................................................................103  
Technical Support............................................................................................................103  
World Wide Web.............................................................................................................103  
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Table of Contents  
Advance Replacement .....................................................................................................103  
Billing..............................................................................................................................104  
Returns.............................................................................................................................105  
Appendix C: Configuration Worksheets............................................................................107  
Appendix D: Glossary ..........................................................................................................117  
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Table of Contents  
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ABOUT THE PRODUCT  
1
You have purchased the Megabit Modem® that connects  
your Ethernet LAN to service providers for instant and  
high-speed access to the Internet or to other types of Wide  
Area Network (WAN) applications. It uses Asymmetric  
Digital Subscriber Line (ADSL) technology to give you  
broadband access over existing cabling in your home,  
office, or building.  
The Megabit Modem is easy to install and configure. To  
install the modem:  
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connect a telephone cable from the modem to a wall phone jack for ADSL service  
connect a cable from the modem to a PC or an Ethernet hub for LAN service  
connect a power cable to a local power source  
To access the modem configuration, you launch your Web browser and enter the modem IP  
address as the URL. Use the modem Web pages to:  
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configure ADSL, LAN, and WAN parameters  
view ADSL, IP, LAN, and WAN statistics  
upgrade software  
define SNMP parameters  
perform a system reset  
define static MAC, NAPT, and route tables  
In addition, the LEDs on the modem front panel provide continual status at-a-glance for network  
and modem connections.  
The following sections list the Megabit Modem 400F, 500L, 600F, and 700F features and  
applications.  
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Megabit Modem 400F  
MEGABIT MODEM 400F  
The Megabit Modem 400F is designed for LAN applications and offers these features:  
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supports full-rate ADSL and G.lite  
offers rates up to 7.552 Mbps downstream and 928 kbps upstream for full rate  
offers rates up to 1.5 Mbps downstream and 512 kbps upstream for G.lite  
offers symmetric rates up to 928 kbps  
supports 1483 bridging and routing over ATM  
supports up to 32 Bridge/Router sessions  
contains an embedded SNMP agent  
operates as a DHCP server  
supports NAT (including NAPT) and DNS  
See the illustration on the next page for an application example.  
2
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Chapter 1: About The Product  
Business Internet Access  
ADSL  
Internet  
400F  
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Megabit Modem 500L  
MEGABIT MODEM 500L  
The Megabit Modem 500L is a rate adaptive G.lite modem for single user applications and  
offers these features:  
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complies with the G.lite standard  
offers rates up to 1.5 Mbps downstream and 512 kbps upstream  
supports RFC 2364 PPP over ATM (AAL5)  
supports up to 8 sessions  
contains an embedded SNMP agent  
operates as a DHCP server  
supports NAT (including NAPT) and DNS  
Microfilter  
ADSL  
Internet  
500L  
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Chapter 1: About The Product  
MEGABIT MODEM 600F  
The Megabit Modem 600F is a high-performance ADSL modem designed for power users. It  
offers these features:  
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supports full-rate ADSL and G.lite  
offers rates up to 7.552 Mbps downstream/928 kbps upstream for full rate  
offers rates up to 1.5 Mbps downstream/512 kbps upstream for G.lite  
offers symmetric rates up to 928 kbps  
supports RFC 2364, carrying PPP traffic over ATM (AAL5)  
supports 32 PPP sessions  
contains an embedded SNMP agent  
operates as a DHCP server  
supports NAT (including NAPT) and DNS  
600F  
POTS  
Splitter  
Provider  
Network  
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Megabit Modem 700F  
MEGABIT MODEM 700F  
The Megabit Modem 700F is designed as an ADSL router for LAN applications.  
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supports full-rate ADSL and G.lite.  
offers rates up to 7.552 Mbps downstream/928 kbps upstream for full rate  
offers rates up to 1.5 Mbps downstream/512 kbps upstream for G.lite  
offers symmetric rates up to 928 kbps  
supports RFC 2364 PPP traffic over ATM (AAL5)  
supports 1483 bridging and routing over ATM  
supports up to 32 sessions in PPP Over ATM mode or  
supports up to 32 sessions in Bridge/Router mode  
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contains an embedded SNMP agent  
operates as a DHCP server  
supports NAT (including NAPT) and DNS  
See the illustration on the next page for an application example.  
6
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Chapter 1: About The Product  
Large Business Internet Access  
ADSL  
Internet  
700F  
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Megabit Modem 700F  
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WHAT YOU NEED TO START  
2
This chapter identifies the preparations and prerequisites for installing the Megabit Modem  
400F, 500L, 600F, and 700F. Before installing the modem, verify that:  
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The contents of the package are accurate as described on this page.  
Your system meets the requirements for connecting to and configuring the modem  
(see “Requirements For Your System” on page 10).  
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Your facility meets the installation site requirements (see “Requirements For The  
Installation Site” on page 10).  
The configuration parameters are available from your service provider (see “What You  
Need from Your Service Provider” on page 13).  
VERIFY PACKAGE CONTENTS  
As you unpack your Megabit Modem, visually inspect the contents for signs of damage. If the  
equipment was damaged in transit, report the damage to the transportation company and to the  
sales representative.  
Check the contents of the package for the  
following:  
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one black cable  
one grey phone cord  
four rubber, self-adhesive feet  
two screws  
power supply and optional power cord  
(see “Power Cable” on page 14 for options)  
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grey cable and DB-9 console port adapter  
If you need to store the modem for a prolonged period, store it in the original antistatic bag  
and packaging. Observe environmental specifications as stated on page 97.  
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Requirements For Your System  
REQUIREMENTS FOR YOUR SYSTEM  
You need the following hardware and software to complete the installation and configuration of  
the Megabit Modem 400F, 500L, 600F, and 700F:  
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PC with an Ethernet Network Interface Card (NIC)  
TCP/IP network protocol stack (see the operating system documentation)  
Web browser installed such as Netscape® or Internet Explorer® Version 4.0 or higher  
Ethernet hub (optional)  
REQUIREMENTS FOR THE INSTALLATION SITE  
Before installing the Megabit Modem 400F, 500L, 600F, and 700F, you must:  
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select a location to install the modems as described in the section below  
identify requirements to connect phones as described in the section “Phone Service” on  
page 13  
Location for Modem Installation  
You can install the modem either:  
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placed on a flat surface (shown on page 11)  
mounted on a wall (shown on page 12)  
Your facility must have the following minimum site requirements to install each modem:  
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power outlet  
RJ-11 wall jack that has DMT ADSL service available  
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Chapter 2: What You Need To Start  
Flat-Surface Mount  
Do not stack the modems when installing on a flat surface. The modems do not  
dissipate heat properly when stacked.  
Place the modems on a flat surface, such as on a table or in a rack.  
PWR  
LINK LA  
MEG  
TX  
N
RX  
ABIT  
SY  
MODEM  
N
C
TX ADSL  
RX  
7
00F  
MAR  
OH  
PWR  
LINK LA  
MEG  
RX  
N
TX  
ABIT  
SY  
MODEM  
N
C
TX ADSL  
RX  
7
00F  
MAR  
OH  
Minimum  
1-inch clearance  
PWR  
LINK LA  
MEG  
RX  
N
TX  
ABIT  
SY  
MODEM  
N
C
TX ADSL  
RX  
7
00F  
MAR  
OH  
Minimum  
1-inch clearance  
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Requirements For The Installation Site  
Wall Mount  
Observe the minimum dimensions between multiple modems (shown in the  
illustration) to ensure sufficient ventilation for heat dissipation  
Mount the Megabit Modem on a wall using the two screws included with the modem.  
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Chapter 2: What You Need To Start  
Phone Service  
If you get phone service with your data service, you need the following:  
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S1 Network Interface Device (or other POTS splitter) installed by your service provider  
RJ-11 phone jacks for phone service  
The POTS splitter is a device that separates data transmission from phone service. After  
installing the POTS splitter, connect separate jacks for data and for phone service. Ensure that  
your service provider indicates which jacks are for data and which jacks are for phone service.  
WHAT YOU NEED FROM YOUR SERVICE PROVIDER  
This section lists the information you need to configure system settings and sessions for the  
modem. Contact your service provider for this information. Use the worksheets, provided in  
Appendix C on page 107, to record your configuration information. When you begin to  
configure the modem in Chapter 4 on page 23, the procedures refer you to the proper table for  
the configuration information that you recorded.  
1
System mode (WAN connection for the sessions between the modem and the service  
provider): PPP over ATM or Bridge/Router RFC 1483  
2
If Bridge/Router:  
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Configure as a Bridge only, as a Router only, or as a Bridge and Router.  
If Bridge or Router, choose LLC or VC-MUX encapsulation.  
If Router, choose the version of and direction for RIP (RIP1, RIP2, or RIP1  
compatible).  
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If Bridge, select whether or not to enable Spanning Tree.  
3
4
If PPP over ATM and using CHAP, identify CHAP authentication name.  
Session address for Ports 1 through 32 (WAN configuration):  
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ATM VPI and ATM VCI (specified for each session)  
when using fixed IP addresses, IP address specified for each session by the  
service provider  
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for PPP system mode, Login Name and Login Password (specified for each session)  
For more information about the configuration choices listed above, see Chapter 10, “Technical  
Reference” on page 85.  
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What You Will Choose  
WHAT YOU WILL CHOOSE  
Before configuring the modem, consider the options in the following “Configuration” section.  
Ensure that you have the appropriate power cable for your facility as described below in the  
“Power Cable” section.  
Configuration  
You can choose to use:  
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Network Address Translation (NAT) protocol. This protocol includes both basic NAT and  
Network Address Port Translaton (NAPT). Basic NAT uses a one-to-one mapping of a  
private IP address and a public IP address. NAPT uses a multiple-to-one mapping of  
multiple IP addresses and their ports to a single IP address and its ports. For more  
information about the NAT protocol, see “NAT” on page 87.  
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Domain Name System (DNS) resolution. You must specify the IP address for a device to  
serve as the DNS resolver. You can also specify a second IP address to designate another  
device to serve as a secondary DNS resolver. The DNS device maps human-readable  
addresses to IP addresses. For simplicity and ease of management, use DNS relay. DNS  
relay allows the LAN hosts to configure the Megabit Modem as the DNS server. Depending  
on the host sending the DNS message and what session it is assigned to, the Megabit  
Modem will relay the message to the appropriate DNS server. For more information about  
DNS resolution, see “DNS Resolution” on page 93.  
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TFTP server for downloading software updates to the modem. You specify the IP address,  
subnet mask, and directory path (where software updates are located) for the device that  
will be the TFTP server.  
Power Cable  
The Megabit Modem 400F, 500L, 600F, and 700F are available with a variety of power supplies  
and power cords. When you order your modem, choose one of the following as the last number  
in the product part number (example: use 150-2122-7x for the 700F) for your order to indicate  
which power option you need:  
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2 indicates a power supply for International use and does not include a power cord.  
3 indicates a power supply for North American use and includes a North American  
power cord.  
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4 indicates a Universal power supply and includes a European power cord.  
5 indicates a Universal power supply and includes a UK/Ireland power cord.  
14  
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INSTALLING THE MODEM  
3
The Megabit Modem is easy to install by:  
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attaching the four adhesive-backed feet  
setting the MDI/MDI-X switch  
connecting a cable from the modem to a PC or an Ethernet hub for LAN service  
connecting a phone cord from the modem to a wall phone jack for DMT ADSL Internet  
or other types of WAN services  
•
connecting a power cable to a local power outlet  
Perform the installation on the following pages (see “Requirements For The Installation Site”  
on page 10 to determine where to place modems). Use the parts listed below in the installation  
procedures.  
Part  
Function  
Installation Kit  
Rubber feet (four)  
Black cable  
Attaches to the base of the modem.  
Connects the modem 10/100BASE-T connector to the LAN through a hub  
or to a PC NIC. This cable is a straight-through Category 5 cable.  
Grey cord  
Connects the modem ADSL connector to the RJ-11 wall jack with DMT  
ADSL service for access to the Internet or other types of WAN applcations.  
Power cable  
Connects the modem POWER connector to the local power source. Power  
supply optionally has a power cord. (See “Power Cable” on page 14 for  
selection options.)  
Not In Installation Kit (in ship box)  
Grey cable and  
adapter  
Connects the RS-232 MGMT port to an ASCII terminal or a PC running  
terminal emulation software. Adapter assembly connects to a DB-9  
connector on the PC. Then, one RJ-45 connector installs in the adapter and  
the other connector into the console port on the modem.  
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Attaching the Feet  
ATTACHING THE FEET  
Attach each of the four adhesive-backed rubber feet to a footprint recess on the bottom of  
the modem.  
16  
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Chapter 3: Installing the Modem  
SETTING THE MDI/MDI-X SWITCH  
Using the MDI/MDI-X switch, the Megabit Modem can communicate with a device on the  
LAN that is either MDI or MDI-X without having to change the cable (a straight-through cable  
is supplied with the installation kit).  
Set the switch for the 10/100BASE-T port to either:  
•
MDI-X when you are connecting to a device with a MDI port such as a PC with an  
Ethernet NIC  
•
MDI when you are connecting to a device with a MDI-X port such as a hub, repeater,  
bridge, or router  
For connection to  
devices such as  
a PC  
MDI-X  
For connection to  
devices such as  
a hub  
MDI  
10/100BASE-T  
ADSL  
POWER  
MDI MDI-X  
RS232 MGMT  
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Installing Cabling  
INSTALLING CABLING  
Install the black cable for the 10/100BASE-T LAN connection, the grey phone cord for the  
ADSL port WAN connection, and the power cable to the power connector (cable specified on  
page 14).  
.
Megabit Modem  
PC, hub or other  
Switch  
network device  
10/100BASE-T port  
RS-232 MGMT port  
(600F and 700F only)  
M
D
I
M
DI-X  
ADSL port  
10BASE-T  
RS232  
Power  
connector  
M
GMT  
D
S
L
O
W
E
R
Wall jack with DMT ADSL  
service  
To power  
outlet  
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Chapter 3: Installing the Modem  
1
2
After you have set the MDI/MDI-X switch to the correct position, connect the black cable  
from the modem 10/100BASE-T port to your PC or hub.  
Connect the grey phone cord from the modem ADSL port to the ADSL wall jack. If your  
installation requires a splitter or microfilter, refer to the manufacturer’s documentation for  
further instructions.  
3
Connect the power cable from the modem power connector to a power outlet.  
If you need pinouts for the ADSL and 10/100BASE-T connectors, see “Connector Pinouts” on  
page 101. For information on how to use the RS-232 management port for maintenance, see  
“Using the RS-232 Management Port” on page 80.  
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Setting Up ADSL Service  
SETTING UP ADSL SERVICE  
The service provider sets up the ADSL parameters for your service. The modem must have  
the ADSL SYNC LED lit before you can connect sessions with your service provider. Verify  
SYNC in the following section, “Checking LED Indications.”  
CHECKING LED INDICATIONS  
The table below describes LED indications for all operational modes. LEDs on the modem front  
panel provide continual status at-a-glance for network and modem connections.  
LED  
State  
Description  
PWR  
On green  
Off  
Modem has power.  
Modem does not have power.  
LAN  
LINK  
On green  
A PC, hub, or other network device is connected to the modem  
10/100BASE-T interface.  
Off  
No device is connected to the modem 10/100BASE-T interface.  
Modem is transmitting data to devices on the LAN.  
Modem is not transmitting data to the LAN.  
TX  
Flashing green  
Off  
RX  
Flashing green  
Off  
Modem is receiving data from devices on the LAN.  
Modem is not receiving data from the LAN.  
ADSL  
SYNC  
On green  
Flashing green  
Off  
ADSL transceiver is synchronized and in normal operation mode.  
ADSL transceiver is in a start-up sequence.  
ADSL modem transceiver is not detecting a transceiver at the far end.  
Modem is transmitting data to the service provider.  
Modem is not transmitting data to the service provider.  
Modem is receiving data from the service provider.  
Modem is not receiving data from the service provider.  
ADSL margin is at or above the value set by the service provider.  
ADSL margin is below the value set by the service provider.  
Telephone receiver is off hook.  
TX  
Flashing green  
Off  
RX  
Flashing green  
Off  
MAR  
OH  
On green  
Off  
On yellow  
Off  
Telephone receiver is on hook.  
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Chapter 3: Installing the Modem  
CONNECTING PHONE SERVICE  
The Megabit Modem 400F, 500L, 600F, and 700F modem provide full support for the ITU  
standard G.hs, G.dmt, and G.lite. In the traditional ADSL deployment, POTS splitters are  
required to separate data transmission from phone service. In this case, the service provider will  
supply you with a splitter. You will have one or more jacks for phone service and one jack for  
ADSL data service. Connect your phones to the jacks indicated by the service provider for  
phone service. However, using G.lite allows for splitterless deployment. In this case, you will  
not need to install a splitter.  
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Connecting Phone Service  
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SETTING UP FOR CONFIGURATION  
4
Set up a PC and a Web browser to configure the Megabit Modem 400F, 500L, 600F, and 700F.  
This chapter provides the set up procedures, then shows you how to access and navigate the  
Megabit Modem Web pages. The configuration process flow is shown below.  
Start  
Chapter 4 on page 24  
Setting Up the PC To Configure  
the Modem  
Chapter 4 on page 25  
Configuring a Web Browser  
Chapter 4 on page 26  
Accessing the Modem Web Pages  
Chapter 5 on page 35  
Configuring System Settings  
•
•
•
•
Defining TFTP Parameters  
Defining SNMP Parameters  
Configuring System Security  
Selecting the System Mode of  
Operation  
500L, 600F, and 700F  
400F and 700F  
Configuring Bridging/Routing  
Sessions  
Configuring PPP over ATM Sessions  
•
Configuring the WAN  
Bridging/Routing Sessions  
Configuring the LAN  
Activating and Deactivating  
Sessions  
•
Configuring the WAN PPP  
Sessions  
OR  
•
•
•
Configuring the LANClick Apply.  
Activating and Deactivating  
Sessions  
•
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Setting Up the PC To Configure the Modem  
SETTING UP THE PC TO CONFIGURE THE MODEM  
Set up your PC to be on the same IP subnet as the modem. Since the modem default uses DHCP,  
it will automatically configure your IP settings once you set up that option. If you want to view  
or change the default IP address for the modem, see “Using the RS-232 Management Port” on  
page 80.  
The following is an example of how to set up a PC running Microsoft Windows 98.  
1
2
3
Open the Control Panel then double-click the Network icon.  
From the Configuration tab, double-click TCP/IP.  
If DHCP has been enabled on the modem (default), select Obtain an IP  
address automatically and skip to step 5. Otherwise, select Specify an IP address.  
4
Enter IP Address and Subnet Mask. The default LAN IP address is 192.168.0.1. Use an IP  
address from the following range: 192.168.0.2 to 192.168.0.254. The default subnet mask  
is 255.255.255.0.  
5
6
7
Click OK to close the TCP/IP Properties window.  
Click OK to close the Network window.  
Click OK to restart the computer.  
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Chapter 4: Setting Up For Configuration  
CONFIGURING A WEB BROWSER  
Access the Megabit Modem Web page through a Web browser (see page 10 for Web browser  
versions supported). The Web browser must have the proxies disabled and cache settings  
enabled to compare the cached document against the network document every time it is  
accessed.  
The following is an example of how to make the configuration changes using Netscape  
Navigator 4.0.  
1
2
3
4
5
Open your Web browser.  
Click Edit, Preferences to open the Preferences dialog.  
From Category, select Advanced, click Cache, then select Every time.  
From Category, select Advanced, click Proxies, then select Direct connection to the Internet.  
Click OK to close the Preferences window.  
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Configuring a Web Browser  
The following is an example of how to make the configuration changes using  
Internet Explorer 5.5:  
1
2
3
4
5
6
7
8
Open your Web browser.  
Click Tools, Internet Options to open the Internet Options dialog.  
In the Temporary Internet Files section of the dialog, click Settings.  
Select Every visit to the page, then click OK.  
Click the Connections tab, then click LAN Settings to open the LAN Settings dialog.  
In the Proxy Server section of the dialog, clear the Use a proxy server box.  
Click OK to close the LAN Settings dialog.  
Click OK to close the Internet Options dialog.  
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Chapter 4: Setting Up For Configuration  
ACCESSING THE MODEM WEB PAGES  
Type http://192.168.0.1 in the Location Bar field of the Web browser (as shown below), then press  
ENTER . (192.168.0.1 is the default IP address for the Ethernet port and is a private address  
specified for use by RFC 1918. If you change the Ethernet IP address through the management  
port, you will enter the new IP address in the Location Bar.)  
http://192.168.0.1/index.htm  
Location Bar  
By default, the Megabit Modem  
(except the 400F) initializes in  
“PPP over ATM” mode and  
displays the page to the top right:  
If the Megabit Modem is in  
“Bridging/Routing” mode, it  
displays this page:  
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Saving the Configuration  
SAVING THE CONFIGURATION  
Save the majority of the configuration changes by the clicking Apply. However, there are other  
configuration changes that require you to reset the modem in order to update NVRAM with  
these modifications. These changes are described in the following table:  
Item  
Menu  
Tab  
System Mode  
system  
lan  
general  
general  
general  
general  
LAN IP Address and Net Mask  
DHCP IP Address Range  
RIP Version  
lan  
lan  
See the following sections to:  
•
•
•
save configuration changes to NVRAM on page 29  
reset the modem to activate the configuration on page 30  
reset the modem to restore the factory default values on page 31  
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Chapter 4: Setting Up For Configuration  
Saving the Configuration to NVRAM  
After clicking Apply at the bottom of a configuration page, the changes are automatically saved  
to NVRAM. Changes may either take effect immediately or after system reset.  
To the right is an example of a  
configuration change (TFTP server IP  
address) that only requires you to  
click Apply for changes to take effect  
immediately (commit changes to  
RAM) and be saved to NVRAM.  
Below is an example of a  
configuration change (LAN IP  
address) that requires both the click of  
Apply at the configuration screen and a  
system reset for changes to take effect  
and to be saved to NVRAM.  
1
2
3
Locate Apply at the bottom of the  
dialog.  
Click Apply to open the  
confirmation dialog.  
Click OK to reset the modem.  
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Saving the Configuration  
Resetting the Modem  
Resetting the modem causes all active connections to drop.  
After you make changes to the modem configuration and write the changes to NVRAM or  
return modem configuration to factory defaults, you must reset the modem. See page 28 for  
a list of changes that you must reset to effect.  
1
2
3
From the system menu, click general to open the General System window.  
Click Reset Unit.  
Click Proceed to reset the modem.  
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Chapter 4: Setting Up For Configuration  
Resetting the Modem to Factory Defaults  
You can return the Megabit Modem parameters to the factory default values. This provides  
a known starting point if you are troubleshooting the system or simply need to reconfigure  
parameters. The factory default values are listed on page 32 and page 33.  
1
2
From the system menu, click general to open the General System window.  
Click Set Factory Default.  
When you click Proceed to return to factory default values, the modem  
automatically resets.  
3
Click Proceed to return to factory default values.  
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Saving the Configuration  
Listed in the table below are the default values for the Megabit Modem in PPP over ATM mode.  
Reference this table to learn the values assigned to the modem after resetting it to factory  
default.  
Parameter  
Default Value Parameter  
System Setup  
Default Value  
System Mode  
PPP over ATM SNMP parameters  
Enable trap sending  
TFTP parameters  
TFTP Server IP Address  
TFTP Server Net Mask  
TFTP Server Path  
File Name  
Not enabled  
0.0.0.0  
192.168.0.2  
255.255.255.0  
blank field  
tiger.bin  
Trap Server IP Address  
Trap Server Net Mask  
Trap Community String  
Get Community String  
Set Community String  
255.255.255.0  
public  
public  
Admin IP Address  
0.0.0.0  
private  
PPP Over ATM  
PPP Over ATM WAN Configuration  
Service Name  
PPP Over ATM LAN Configuration  
IP Address  
blank field  
0
192.168.0.1  
255.255.255.0  
Enabled  
ATM VPI  
IP Net Mask  
ATM VCI  
100  
DHCP  
Login Name  
blank field  
blank field  
blank field  
Enabled  
Dynamic  
0.0.0.0  
Start DHCP IP Address  
End DHCP IP Address  
Primary DNS  
192.168.0.2  
192.168.1.1  
192.168.0.1  
192.168.0.1  
Login Password  
Chap Host  
Address Translation  
Address Assignment  
IP Address  
Gateway  
Static NAT Entries (private, proxy, and remote)  
IP Addresses  
Ports  
0.0.0.0  
0
User Assignments (for PPP WAN)  
Service Name  
blank field  
0.0.0.0  
Protocol  
UDP  
User’s IP Address  
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Chapter 4: Setting Up For Configuration  
Listed in the table below are the default values for the Megabit Modem in Bridge/Router mode.  
Reference this table to learn the values assigned to the modem after resetting it to factory  
default.  
Parameter  
Default Value Parameter  
Bridge/Router RFC 1483  
Default Value  
Brouter WAN Configuration  
Service Name  
ATM VPI  
Not selected  
blank field  
0
Spanning Tree  
Brouter LAN Configuration  
Bridging  
Selected  
Enabled  
ATM VCI  
100  
Port Priority  
100  
Bridging  
Enabled  
101  
Routing  
Disabled  
Port Priority  
Routing  
RIP Direction  
RIP Version  
Both  
Disabled  
Both  
Rip1  
RIP Direction  
RIP Version  
IP Address  
IP Address  
192.168.0.1  
255.255.255.0  
192.168.0.1  
255.255.255.0  
Not enabled  
192.168.0.2  
192.168.1.1  
192.168.0.1  
192.168.0.1  
Rip1  
IP Net Mask  
0.0.0.0  
0.0.0.0  
LLC  
Default gateway IP Address  
Default gateway IP Net Mask  
DHCP  
IP Net Mask  
Encapsulation  
Static Mac Address Entry  
MAC Address  
Source Port  
all zeros  
0:0:0:0:0:0  
0
Start IP Address  
End IP Address  
Primary DNS  
Dest Port  
0
Gateway  
Static Route Entry  
(IP Address, IP Network Mask,  
Gateway IP Address)  
0.0.0.0  
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Saving the Configuration  
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CONFIGURING SYSTEM SETTINGS  
5
Before configuring sessions with a service provider, set up system parameters for the Megabit  
Modem. The following sections show the Web pages you use to configure system parameters.  
Set the:  
•
TFTP server IP address and network mask for performing functions such as  
software upgrades on page 36  
•
•
•
•
•
•
SNMP parameters on page 38  
Static NAT Entries on 40  
Static MAC Entries on42  
Static Routes on 44  
system security on page 40  
system mode on page 48 for sessions between the modem and the service provider; select  
either PPP over ATM or 1483 Bridging/Routing (for Megabit Modem 700F only)  
Unless specified otherwise, configuration parameters shown in this section are for example  
only.  
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Defining TFTP Parameters  
DEFINING TFTP PARAMETERS  
A TFTP server is a device on the LAN from which you can download software updates to your  
modem. See page 93 for more information on a TFTP server. See page 77 for procedures on  
how to update the software on your modem.  
Information Description  
IP Address The four octet address of the TFTP server (example: 192.168.0.2)  
Net Mask  
File Path  
The subnet mask of the TFTP server (example: 255.255.255.0)  
The path on the TFTP server where the updated software is located.  
This may or may not be required depending on the TFTP server  
configuration. (Example: c:\download\)  
File Name  
The full name of the updated software (example: tiger.bin)  
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Chapter 5: Configuring System Settings  
1
2
3
4
From the system menu,  
click general to open the  
General System window.  
Enter the TFTP Server IP  
address for the device that  
will be the TFTP server.  
Enter the TFTP Server Net  
Mask (subnet mask) for  
the TFTP server.  
Enter the TFTP Server File  
Path where the updated  
software resides on the  
TFTP server (leave blank  
if the file is stored in the  
root shared folder on the  
TFTP server).  
5
6
Enter the TFTP Server File Name of the updated software file.  
Click Apply to activate the changes.  
Example  
The illustration above shows the configuration to access a TFTP server with IP address  
192.168.0.2 using a subnet mask of 255.255.255.0. The TFTP server has been set up so that  
“tiger.bin” has been placed directly inside the shared directory (not in a subdirectory of the  
shared directory). Therefore, the File Path should be left blank.  
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Defining SNMP Parameters  
DEFINING SNMP PARAMETERS  
The modem has an SNMP agent that allows it to be managed remotely by a Network  
Management System (NMS). See page 91 for more information about managing the modem  
through SNMP. Use the following table for a description of the SNMP parameters:  
Information  
Description  
Enable Trap Sending  
Enables/Disables SNMP messages to the trap server.  
Trap Server IP Address The IP address of the server receiving the traps.  
Trap Server Net Mask The subnet mask of the server receiving the traps.  
Trap Community String The authentication string of the server receiving the traps. The default  
string is public.  
Read-Only Community The authentication string for only viewing the modem  
String  
statistics/parameters. The SNMP management station must have the  
same string in its configuration. The default is public.  
Read-Write Community The authentication string for viewing the modem statistics and  
changing parameters. The SNMP management station must have  
the same string in its configuration. The default is private.  
String  
1
2
3
4
From the system menu, click  
general to open the General  
System window.  
Select Enable Trap Sending if  
you want the modem to send  
traps to a server.  
Enter the Trap Server IP  
Address for the server that the  
traps will be sent to.  
Enter the Trap Server Net Mask  
(subnet mask) for the server  
that the traps will be sent to  
from the modem.  
You can change the community strings to names you choose. The fields have  
default names as shown in the screen on page 39 and are case sensitive. If you  
change the name, however, the community string names must match on both  
the manager and agent to allow access to the SNMP function.  
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Chapter 5: Configuring System Settings  
5
6
7
8
Enter the Trap Community String.  
Enter the Read-Only Community String.  
Enter the Read-Write Community String.  
Click Apply to activate the changes.  
Example  
The illustration on the previous page shows the configuration for the modem to be managed  
remotely by a trap server located at 192.168.0.3 using a net mask of 255.255.255.0. In order for  
the modem to communicate with the trap server, both the modem and trap server must use the  
same community strings: trap community string set to trapit, read-only community string set to  
readit, and read-write community string set to writeit.  
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Defining Static NAT Entries  
DEFINING STATIC NAT ENTRIES  
Static NAT entries are used in PPP Over ATM mode. They are required only for applications  
that use TCP/UDP connections initiated from the remote end (WAN). Through the Static NAT  
Table, you can map inbound traffic from a remote user to a user or a logical port on your LAN.  
You can enter a maximum of 32 static NAT entries. See page 87 for more information on NAT  
and an example application.  
1
From the system menu, click static NAT table to open the Static NAT Table window.  
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Information  
Description  
Private IP Address  
Private Port  
The non-registered IP address of a device on the LAN side of your modem.  
The logical port number where TCP or UDP traffic will be sent to from the WAN  
after it is translated from the Proxy Address/Port combination.  
Proxy IP Address  
The registered (public) IP address mapped to the Private IP Address. Permitted  
traffic sent to this address from the WAN will end up at the device with the  
associated Private IP Address. This is the IP address assigned to the WAN port  
by the service provider.  
Proxy Port  
The logical port number that TCP or UDP traffic will first be sent to from the WAN.  
Remote IP Address  
The IP address of the device across the WAN that will be sending the TCP or UDP  
traffic to your local device with the Private IP Address. Set this to 0.0.0.0 to allow  
access by any host.  
Remote Port  
Protocol  
The logical port number of the remote device that will be sending the UDP or TCP  
traffic. For example, specify 23 for telnet traffic and specify 21 for FTP traffic. This  
is usually set to 0 to allow any port.  
The protocol, UDP or TCP, to be used as the transport between the LAN and the  
remote user for this static NAT entry.  
2
3
4
5
6
Enter the Private IP Address of the device on the LAN side of the modem.  
Enter the Private Port number of the device on the LAN side of the modem.  
Enter the Proxy IP Address that is mapped to the Private IP Address.  
Enter the Proxy Port number that is mapped to the Private Port.  
Enter the Remote IP Address of the device across the WAN that will initiate a session. If you  
do not have the information for the remote user, enter 0.0.0.0.  
7
Enter the Remote Port number of the device across the WAN that will initiate a session. For  
example, specify 23 for telnet traffic and specify 21 for FTP traffic. If you do not have the  
information for the remote user, enter 0.  
8
9
Select the Protocol from the drop-down menu.  
Click OK to accept the changes or Cancel to return to the previous screen without changes.  
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Configuring Static MAC Entries  
CONFIGURING STATIC MAC ENTRIES  
When the modem's mode of operation is Bridge/Router RFC 1483 and the modem is configured  
as a bridge, the modem forwards Ethernet frames based on MAC addresses. Up to 32 static  
MAC entries can be added to the modem bridge MAC addres table.  
Information  
Description  
MAC Address  
Source Port  
The hardware address of a device.  
The port receiving the frame.  
Destination Port  
The port that the traffic will be forwarded out of.  
Display Static MAC Entries  
1
2
From the system menu, click static MAC table to open the Static MAC Table window.  
Observe the list of MAC addresses.  
Add a Static MAC Entry  
1
2
3
4
From the system menu, click static MAC table to open the Static MAC Table window.  
Click Add to display the Static MAC Address Entry window.  
Configure the MAC Address parameters as defined above.  
Click Apply to add the new data to the list.  
Modify a Static MAC Entry  
1
2
From the system menu, click static MAC table to open the Static MAC Table window.  
Click Select of the address to be changed.  
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Chapter 5: Configuring System Settings  
3
4
Configure the MAC Address parameters as defined above.  
Click OK to change the existing data to the list.  
Delete a Static MAC Entry  
1
2
3
From the system menu, click static MAC table to open the Static MAC Table window.  
Click Select of the address to be deleted.  
Click Delete to remove the selected address.  
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Configuring Static Routes  
CONFIGURING STATIC ROUTES  
Information  
Description  
Destination  
Net Mask  
Gateway  
The destination IP address of the packet.  
The destination subnet mask of the packet.  
The next hop IP address the packet will be forwarded to.  
Display Static Routes  
1
2
From the system menu, click static route table to open the Static Route Table window.  
Observe the list of static routes.  
Add a Static Route  
1
2
3
4
From the system menu, click static route table to open the Static Route Table window.  
Click Add to display the Static Route Entry window.  
Configure the static route parameters as defined above.  
Click Apply to add the new data to the list.  
Modify a Static Route  
1
2
3
4
From the system menu, click static route table to open the Static Route Table window.  
Click Select of the route to be changed.  
Configure the static route parameters as defined above.  
Click OK to change the existing data to the list.  
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Chapter 5: Configuring System Settings  
Delete a Static Route  
1
2
3
From the system menu, click static route table to open the Static Route Table window.  
Click Select of the static route to be deleted.  
Click Delete to remove the selected route.  
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Configuring System Security  
CONFIGURING SYSTEM SECURITY  
System security includes the use of the Admin IP Address and configuring console access  
through the RS-232 MGMT port.  
Admin IP Address  
This address determines which devices on the LAN can manage the Megabit Modem. You can  
select:  
•
•
limited access where only one device on the LAN can manage the modem  
general access where any device on the LAN can manage the modem  
Perform the following to configure administration for your modem:  
1
2
From the system menu, click general to open the General System window.  
Select one of the following and enter the appropriate IP address:  
a
When you allow only one device on the LAN to manage the modem, enter the  
IP address for that one device in the IP address field.  
b
When you allow any device on the LAN to manage the modem, enter 0.0.0.0 in the  
IP address field.  
3
Click Apply to activate the changes.  
Example: The illustration above shows the modem configuration to allow only the station with  
the IP address 192.168.0.3 to access the modem on the same LAN.  
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Chapter 5: Configuring System Settings  
You can change the Admin IP Address for the 600F and 700F by physically  
connecting to the RS-232 MGMT port.  
RS-232 MGMT Port  
The RS-232 MGMT Port allows access to several parameters such as the LAN IP settings,  
Admin IP Address, and modem reset.  
These parameters can be vital to the operation of the modem. You should password protect the  
RS-232 MGMT port:  
1
Access the console prompt by ““Using the RS-232  
Management Port” on page 80”  
2
3
At the main menu, enter 6.  
At the Enter Choice prompt, enter the password for  
RS-232 port access. If one has not been previously  
configured, press Enter without entering a password.  
4
5
6
When a “Please enter the new password:” message  
appears, type in the new password.  
When a “Please retype the new password:” message  
appears, retype the new password.  
When the “Password accepted” message appears,  
you have changed the password successfully.  
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Selecting the System Mode of Operation  
SELECTING THE SYSTEM MODE OF OPERATION  
System mode indicates the mode of operation between the modem and the service provider  
for WAN sessions. The only model capable of selecting between system modes is the Megabit  
Modem 700F. It can operate in either Bridge/Router RFC 1483 or PPP over ATM mode. It can  
not operate in both modes simultaneously. The Megabit Modem 400F operates only in  
Bridge/Router RFC 1483 mode, while the Megabit Modem 500L and 600F operate only in PPP  
over ATM mode. This section provides procedures to select the system mode. Then, use the  
section “Saving the Configuration” on page 28 to effect the system mode of operation.  
All sessions that occur simultaneously must be the same system mode: either PPP over ATM  
or Bridge/Router RFC 1483. Your service provider will indicate which system mode you can use.  
See the “System Mode Worksheet” on page 108 for the system mode that you recorded.  
Point-to-Point Protocol (PPP) over ATM is connection-oriented where the session has to be  
established between the modem and the service provider before data transmission begins.  
Bridge/Router RFC 1483 does not establish a session. This mode switches packets based on the  
data link-layer address for bridging or on the network-layer address for routing.  
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Chapter 5: Configuring System Settings  
Use the following procedure to set the system mode:  
1
From the system menu,  
click general to open the  
General System window.  
2
Select the PPP Over ATM or  
Bridge/Router RFC1483  
from the drop-down menu  
as indicated by your  
service provider.  
3
4
Click Apply.  
At the Proceed message,  
click OK.  
5
6
Click reset unit to reset the  
modem and activate the  
changes.  
At the System Reset  
message, click Proceed.  
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Selecting the System Mode of Operation  
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CONFIGURING PPP SESSIONS  
6
You can set up PPP sessions between one of these Megabit Modem products and a service  
provider:  
•
•
•
500L  
600F  
700F (in PPP over ATM mode)  
Use these sections, in the order shown, to set up the sessions:  
For information about:  
Go to page:  
52  
Selecting Configuration Parameters  
Setting Up the PPP Mode (700F Only)  
Configuring the WAN PPP Sessions  
Configuring the LAN  
52  
53  
58  
60  
62  
Assigning LAN Users to PPP Sessions  
Activating and Deactivating Sessions  
For these sessions, PPP runs over ATM virtual circuits (VCs).  
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Selecting Configuration Parameters  
SELECTING CONFIGURATION PARAMETERS  
There are many configuration options for the modem from which you can select. The following  
options are recommended for enhanced performance.  
•
•
DHCP to allow the modem to dynamically serve IP addresses to devices on the LAN  
NAT to map public IP addresses (proxy IP addresses) acquired from the service provider  
for the WAN sessions to private IP addresses on the LAN  
The following table shows possible configurations, with the recommended configuration first:  
DHCP  
NAT  
How IP Address Acquired  
On  
Off  
On  
Off  
Off  
On  
On  
On  
On  
Off  
Dynamic  
Dynamic  
Fixed  
Fixed  
Fixed  
SETTING UP THE PPP MODE (700F ONLY)  
For the Megabit Modem 700F only, you can select either PPP over ATM or RFC 1483  
bridge/router encapsulation for all sessions you set up. To have all sessions (up to 32) as PPP  
over ATM mode of operation, do the following:  
1
2
3
From the system menu, select  
general.  
Select PPP Over ATM as the Mode  
of Operation.  
Click Apply, then reset the  
modem.  
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Chapter 6: Configuring PPP Sessions  
CONFIGURING THE WAN PPP SESSIONS  
From the WAN Connections page, you configure parameters that set up communication between  
the modem and the service provider through PPP over ATM sessions. You can set up the  
number of sessions indicated for each modem. The number of sessions you can set up is also the  
number of simultaneous sessions the modem can support:  
•
•
•
8 sessions for a 500L  
32 sessions for a 600F  
32 sessions for a 700F  
Access the WAN Connections page and use the following table for reference.  
wan  
connections  
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Configuring the WAN PPP Sessions  
Information  
Description  
Port  
Designates each WAN port for configuring and monitoring sessions.  
Displays the name of the session.  
Connection  
Status  
Displays the connection state.  
Up - Session is up.  
Down - Session is down.  
Connecting - Session is setting up.  
LogInErr - Login Name/Password not recognized in WAN Configuration.  
Disabled - Session Enable checkbox is not enabled in WAN Configuration.  
Enabled - Session Enable checkbox is enabled in WAN Configuration.  
DslDown - ADSL loop is down.  
Add a PPP over ATM WAN Session  
You add a PPP WAN session in the PPP Over ATM WAN Configuration window. Use the following  
reference table and procedure to set up a session.  
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Information  
Description  
Connection Name  
A unique descriptive identifier of the session that also displays in the connection  
field.  
ATM VPI  
ATM VCI  
Virtual Path Identifier (VPI) identifies the virtual path that transports ATM cells in a  
virtual Channel. The range of values is 0 to 15.  
Virtual Channel Idenifier (VCI) identifies a virtual channel for each session (each  
session is a virtual channel). Can be a number from 32 up to a maximum of 253 (on  
VPI 0, VCIs 254 and 255 are reserved), with the first 32 (0 through 31) reserved.  
Login Name  
Each session requires a Logon Name that is supplied by the service provider.  
Each session requires a Logon Password that is supplied by the service provider.  
Login Password  
Primary DNS  
IP address of Domain Name Service device that translates names into numeric IP  
addresses. This is the device at the service provider that the modem will translate  
requests.  
Secondary DNS  
IP address of a secondary Domain Name System device that translates names into  
numeric IP addresses.  
Address Translation  
InBound NAT Default  
Enables/disables the use of Network Address Translation (NAT) protocol to translate  
private IP addresses to public IP addresses assigned to each session.  
IP address of the designated NAT default user for inbound traffic. When the NAT  
engine does not have enough information to do the inbound translation, it forwards  
the inbound packet to the NAT default user.  
Continuous Retry  
Enables/disables the Continuous Retry function of the PPP session establishment  
process. When Continuous Retry is enabled, the PPP engine continuously retries  
establishing the PPP session until one of the following is true:  
•
•
•
The PPP session is established successfully. The session status then goes to the  
UP state.  
Authentication fails during the handshaking. The session status then goes to the  
LogInErr state.  
The PPP session is disconnected. The session status then goes to the DOWN  
state.  
Always ON  
When enabled, the PPP engine establishes/maintains the session even when there  
are no users assigned to it. When disabled, the PPP engine will not establish or will  
terminate the session when there are no users assigned to it.  
Session Enable  
If enabled, the session is active and is ready to establish the PPP link. If disabled, the  
session is not active.  
Address Assignment  
Determines whether the session IP address is assigned by the service provider  
(Dynamic) or entered by the user (Fixed).  
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Configuring the WAN PPP Sessions  
1
2
To add a session, click Add to display the PPP Over ATM WAN Configuration page.  
Configure the PPP over ATM parameters shown and defined in the figure and table  
page 54.  
3
4
Click OK to create the session or click cancel to cancel the set up of the session.  
Click Refresh to update the connections window.  
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Chapter 6: Configuring PPP Sessions  
Modify a PPP over ATM WAN Session  
1
Click Edit next to any Port 1-32 to display the PPP Over ATM WAN Configuration page for that  
port.  
2
Change parameters as needed using the table on page 55 for a description of parameters.  
Delete a PPP over ATM WAN Session  
1
2
3
4
From the wan menu, click connections to open the WAN Connections window.  
Select a port and click Edit to open the PPP Over ATM WAN Configuration page.  
Click Delete to remove the selected session from the list.  
Click OK to return to connections window or click Cancel to cancel any changes you made  
to the current configuration.  
5
Click Refresh to update the WAN Connections window.  
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Configuring the LAN  
CONFIGURING THE LAN  
Devices on your local LAN attach to the modem through its LAN port. Configure parameters  
for communicating between the local LAN and the modem.  
Configure Modem Parameters  
Access the General System page to set up modem system  
parameters.  
lan  
general  
1
From the lan menu, click general to open the LAN General  
window.  
Information  
Description  
IP  
Internet Protocol. Operates at layer 3 and provides addressing.  
IP Address  
IP Net Mask  
DHCP  
The IP address of the modem Ethernet 10/100BASE-T LAN port.  
The IP Net Mask address of the modem Ethernet 10/100BASE-T LAN port.  
Dynamic Host Configuration Protocol.Used to assign dynamic IP addresses.  
Enables/Disables the modem's DHCP server.  
Enable  
Lease IP Address Range Range of IP addresses to lease out.The starting address is one address higher  
than the LAN IP address. The pool size is 256.  
Primary DNS  
IP address of the primary Domain Name System (DNS) device that translates  
names into IP addresses.  
Default Gateway  
Default router set to the IP address of the LAN port.  
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2
3
Enter the IP address and the Net Mask.  
Click on the box adjacent to the letters DHCP. A check mark in the box indicates the  
modem's DHCP server is enabled. No check mark in the box indicates the modem's DHCP  
server is not enabled.  
4
Click Apply.  
Saving the Configuration  
Although you have submitted your new system settings, the parameters are not permanent  
until you write them to NVRAM. See “Saving the Configuration” on page 28 when you want  
to save to NVRAM.  
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Assigning LAN Users to PPP Sessions  
ASSIGNING LAN USERS TO PPP SESSIONS  
Map the IP addresses for the LAN-side users to each PPP over ATM session.  
In PPP over ATM mode, you can map up to a maximum of 8 users to the  
sessions you configure for the 500L. In addition, you can map 64 users to the  
sessions you configure for the 600F and 700F. For example, you could map two  
users to 32 configured sessions, 64 users to one configured session, or any  
combination you choose, up to a maximum of 64 users mapped to all the  
sessions you configure. You can map multiple users to one session; you  
cannot, however, map multiple sessions to any user.  
Enter the IP address or addresses for each user on the LAN that will be assigned to this session.  
To access, select User Assignment on the PPP over ATM WAN Configuration page.  
Information  
Description  
Connection Name  
User’s IP Address  
Inbound NAT Default  
The name of the PPP session.  
The IP address of the LAN-side user’s machine.  
The default device for inbound traffic. This parameter should be configured when  
setting up the WAN PPP session. See “Configuring the WAN PPP Sessions” on  
page 53 for more information.  
Add a User Assignment  
1
2
3
4
From the wan menu, click user assignment to open the WAN User Assignment window.  
Click Add to display the user assignment Entry window.  
Configure the user assignment parameters defined in the table above.  
Click Apply to add the new data to the list. To cancel the process, click Cancel.  
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Chapter 6: Configuring PPP Sessions  
Delete a User Assignment:  
1
2
3
From the wan menu, click user assignment to open the WAN User Assignment window.  
Select the user assignment to be deleted, then click the Select button of that assignment.  
Click Delete to remove the selected user assignment.  
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Activating and Deactivating Sessions  
ACTIVATING AND DEACTIVATING SESSIONS  
Activate sessions as you want to use them. Also, you may want to de-activate some sessions,  
while leaving other sessions active. Follow one of the two methods to activate and deactivate  
sessions.  
From the WAN Connections window:  
1
From the wan menu, click  
connections to open the  
WAN Connections  
window.  
2
Select the sessions you  
want active then click  
Connect. The modem sets  
up the session with the  
service provider.  
3
When dynamically  
acquiring an IP address  
from the service provider,  
the session receives the  
IP address at this time.  
From the Brouter WAN Port Configuration window:  
1
2
3
From the wan menu, click connections to  
open the WAN Connections window.  
Click Edit on the box adjacent to the session  
to activate or deactivate.  
To activate the session, place a checkmark  
in the Session Enable box by clicking in it.  
To deactivate the session, clear the  
checkmark.  
4
Click OK to accept the changes.  
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CONFIGURING  
BRIDGING/ROUTING SESSIONS  
7
You can set up RFC 1483 Bridging/Routing sessions between one of these Megabit Modem  
products and a service provider:  
•
•
400F  
700F (in RFC 1483 Bridging/Routing mode)  
Use these sections, in the order shown, to set up the sessions:  
For information about:  
Go to page:  
64  
Setting Up the Bridging/Routing Mode (700F Only)  
Configuring the WAN Bridging/Routing Sessions  
Configuring the LAN  
65  
69  
71  
Activating and Deactivating Sessions  
For these sessions, PPP runs over ATM virtual circuits (VCs).  
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Setting Up the Bridging/Routing Mode (700F Only)  
SETTING UP THE BRIDGING/ROUTING MODE  
(700F ONLY)  
For the Megabit Modem 700F only, you can select either PPP over ATM or RFC 1483  
bridge/router encapsulation for all sessions you set up. To have all sessions, up to 32, as  
Bridging/Routing mode of operation, do the following:  
1
2
3
From the system menu, select  
general.  
Select Bridge/Router RFC1483 as  
the Mode of Operation.  
Click Apply, then reset the  
modem.  
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Chapter 7: Configuring Bridging/Routing Sessions  
CONFIGURING THE WAN BRIDGING/ROUTING  
SESSIONS  
From the WAN Connections page, you configure parameters that set up communication between  
the modem and the service provider through Bridging/Routing sessions. You can set up the  
number of sessions indicated for each modem. The number of sessions you can set up is also the  
number of simultaneous sessions the modem can support:  
•
•
32 sessions for a 400F  
32 sessions for a 700F  
wan  
connections  
Information  
Description  
Port  
Designates each WAN port for configuring and monitoring sessions.  
Displays the name of the session.  
Connection  
Status  
Displays the connection state.  
Up - Session is up.  
Down - Session is down.  
Connecting - Session is setting up.  
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Configuring the WAN Bridging/Routing Sessions  
Add a Bridging/Routing WAN Session  
You add a bridging/routing WAN session in the WAN Port Configuration window. Use the  
following reference table and procedure to set up a session.  
Information  
Description  
Service Name  
A unique descriptive identifier of the session that also displays in the connection  
field.  
ATM VPI  
ATM VCI  
Virtual Path Identifier (VPI) identifies the virtual path that transports ATM cells in a  
virtual Channel. The range of values is 0 to 15.  
Virtual Channel Idenifier (VCI) identifies a virtual channel for each session (each  
session is a virtual channel). Can be a number from 32 up to a maximum of 253 (on  
VPI 0, VDIs 254 and 255 are reserved), with the first 32 (0 through 31) reserved.  
Bridging  
The function of filtering/forwarding frames based on layer 2 headers.  
Enables/Disables bridging.  
Enable  
Port Priority  
Routing  
The priority of the WAN port.  
The function of routing packets based on layer 3 headers.  
Enables/Disables routing.  
Enable  
IP Address  
IP Net Mask  
RIP Direction  
RIP Version  
The IP address of the modem's WAN port.  
The IP Net Mask address of the modem's WAN port.  
The direction the RIP routing information flows.  
The version of the RIP protocol.  
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Chapter 7: Configuring Bridging/Routing Sessions  
1
2
To add a session, click Add to display the WAN Port Configuration page.  
Configure the bridging/routing parameters shown and defined in the figure and table  
page 65.  
3
4
Click OK to create the session or click cancel to cancel the set up of the session.  
Click Refresh to update the connections window.  
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Configuring the WAN Bridging/Routing Sessions  
Modify a Bridging/Routing WAN Session  
1
Click Edit next to any Port 1-32 to display the Bridging/Router WAN Configuration page for that  
port.  
2
Change parameters as needed using the table on page 66 for a description of parameters.  
Delete a Bridging/Routing WAN Session  
1
2
3
4
From the wan menu, click connections to open the WAN Connections window.  
Select a port and click edit to open the WAN Port Configuration page.  
Click Delete to remove the selected session from the list.  
Click OK to return to connections window or click Cancel to cancel any changes you made  
to the current configuration.  
5
Click Refresh to update the WAN Connections window.  
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Chapter 7: Configuring Bridging/Routing Sessions  
CONFIGURING THE LAN  
Devices on your local LAN attach to the modem through its LAN port. Configure parameters  
for communicating between the local LAN and the modem.  
Configure Modem Parameters  
Access the General System page to set up modem system  
parameters.  
lan  
general  
1
From the lan menu, click general to open the LAN General  
window.  
Information  
Description  
IP  
Internet Protocol. Operates at layer 3 and provides addressing.  
IP Address  
IP Net Mask  
Bridging  
Enable  
The IP address of the modem Ethernet 10/100BASE-T LAN port.  
The IP Net Mask address of the modem Ethernet 10/100BASE-T LAN port.  
The function of filtering/forwarding frames based on layer 2 headers.  
Enables/Disables bridging.  
Port Priority  
Routing  
The priority of the port on a LAN segment.  
The function of routing packets based on layer 3 headers.  
Enables/Disables routing.  
Enable  
RIP Direction  
RIP Version  
The direction the RIP routing information flows.  
The version of the RIP protocol.  
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Configuring the LAN  
Information  
Description  
DHCP  
Dynamic Host Configuration Protocol. Used to assign dynamic IP addresses.  
Enables/Disables the modem's DHCP server.  
Enable  
Lease IP Address Range Range of IP addresses to lease out. The starting address is one address higher  
than the LAN IP address. The pool size is 256.  
Primary DNS  
IP address of the primary Domain Name Service (DNS) device that translates  
names into IP addresses.  
Secondary DNS  
Default Gateway  
IP address of the secondary Domain Name Service (DNS) device that translates  
names into IP addresses.  
Default router set to the IP address of the LAN port.  
2
3
Enter the IP address and the Net Mask.  
Click on the box adjacent to the letters DHCP. A check mark in the box indicates the  
modem's DHCP server is enabled. No check mark in the box indicates the modem's DHCP  
server is not enabled.  
4
Click Apply.  
Saving the Configuration  
Although you have submitted your new system settings, the parameters are not permanent  
until you write them to NVRAM. See “Saving the Configuration” on page 28 when you want  
to save to NVRAM.  
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Chapter 7: Configuring Bridging/Routing Sessions  
ACTIVATING AND DEACTIVATING SESSIONS  
Activate sessions as you want to use them. Also, you may want to de-activate some sessions,  
while leaving other sessions active. Follow one of the two methods below to activate and  
deactivate sessions.  
From the WAN Connections window:  
1
From the wan menu, click  
connections to open the  
WAN Connections  
window.  
2
Select the sessions you  
want active then click  
Connect. The modem sets  
up the session with the  
service provider.  
3
When dynamically  
acquiring an IP address  
from the service provider,  
the session receives the  
IP address at this time.  
From the Brouter WAN Port Configuration window:  
1
2
3
From the wan menu, click connections to  
open the WAN Connections window.  
Click Edit on the box adjacent to the session  
to activate or deactivate.  
To activate the session, place a checkmark  
in the Session Enable box by clicking in it.  
To deactivate the session, clear the  
checkmark.  
4
Click OK to accept the changes.  
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Activating and Deactivating Sessions  
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VIEWING STATISTICS  
8
You can view status for the ADSL link (“Viewing ADSL Status”) and for WAN and LAN  
statistics (“Viewing Network Statistics” on page 75).  
VIEWING ADSL STATUS  
The Megabit Modem 400F, 500L, 600F, and 700F displays the status of the ADSL link.  
Resetting ADSL will close off the ADSL loop connection between the modem  
and the service provider. Active connections will disconnect.  
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Viewing ADSL Status  
Reference the following table for a description of the System Status parameters.  
Information  
Description  
ADSL Link Status  
Shows the status of the ADSL connection between the modem and the service  
provider.  
Alarms  
Identifies conditions on the ADSL link that are reported as an alarm such as: Loss of  
Sync (LOS), Loss of Frame (LOF), Loss of Margin (LOM), or Loss of Cell Delineation  
(LCD).  
Current SNR Margin  
Min SNR Margin  
Shows the Signal-to-Noise Ratio (SNR) margin (signal clarity), in decibels, at which  
the modem is currently operating.  
Indicates the minimum SNR margin allowed before the ADSL MAR LED on the  
modem front panel lights.  
Errored Seconds  
Shows the total number of seconds that ADSL link errors occurred during a 24-hour  
period or since the ADSL link was reset.  
Unavailable Seconds  
Shows the total number of seconds the ADSL link was not available for transmission  
since either the modem was powered on or the ADSL statistics were last cleared.  
Line Attenuation  
Data Rate  
Shows the loss of signal power in the transmission in decibels.  
Shows the rate of data transmission in kilobits per second (kbps).  
1
2
3
From the adsl menu, click status to open the ADSL Status window.  
Monitor the ADSL Status.  
Click Refresh to update the statistics or Clear to clear the statistics.  
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Chapter 8: Viewing Statistics  
VIEWING NETWORK STATISTICS  
The Megabit Modem 400F, 500L, 600F, and 700F display status for the LAN and WAN links.  
From the Main Menu, select Statistics to display the Statistics Menu.  
LAN Statistics  
The Megabit Modem 400F, 500L, 600F, and 700F displays status for the LAN.  
View the following LAN information:  
Information  
Description  
Rx Packets  
Tx Packets  
The total number of packets received at the LAN interface.  
The total number of packets transmitted out the LAN interface.  
The total number of packets discarded by the modem.  
Dropped Packets  
Collisions  
The total number of packets that have collided on the LAN segment.  
1
2
3
From the statistics menu, click LAN to open the LAN Statistics window.  
Monitor the LAN statistics.  
Click Refresh to update the statistics or Clear to clear the statistics.  
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Viewing Network Statistics  
WAN Statistics  
The Megabit Modem 400F, 500L, 600F, and 700F displays status for the WAN.  
View the following WAN information:  
Information  
Description  
Rx Packets  
Tx Packets  
Bad Packets  
The total number of packets received at the WAN interface.  
The total number of packets transmitted out the WAN interface.  
The total number of errored packets detected at the WAN interface.  
1
2
3
From the statistics menu, click WAN to open the WAN Statistics window.  
Monitor the WAN statistics.  
Click Refresh to update the statistics or Clear to clear the statistics.  
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MAINTENANCE AND  
TROUBLESHOOTING  
9
MAINTENANCE  
You can update software by specifying a device on your LAN where you will place new  
software for the update (see “Defining TFTP Parameters” on page 36). Then, use the procedure  
“Updating Software” on page 77 to download new software from the TFTP device to the  
Megabit Modem 400F, 500L, 600F, and 700F.  
Through the RS-232 MGMT port on the Megabit Modem 600F and 700F, you can change the  
modem LAN port IP address and network mask, the default gateway IP address, and the IP  
address for the device on the LAN that can administer the modem (see page 80).  
Updating Software  
Updating software images in binary format require the use of a TFTP server. The TFTP server  
stores the files which will be downloaded to your modem. This guide assumes that you have  
correctly set up your TFTP server on the same subnet as the modem and that the appropriate  
files are available to download.  
When updating software remotely, file corruption is a major concern. For example, if an image  
file altered during the TFTP process the modem may not restore its connections after a system  
reset. To eliminate such possibilities, the modem software performs a CRC check for the  
integrity of each file after it has been downloaded.  
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Maintenance  
Access the General System page to configure the TFTP parameters.  
Reference the following table for a description of the TFTP parameters.  
Information  
Description  
IP Address  
Net Mask  
File Path  
The four octet address of the TFTP server (example: 192.168.0.3).  
The subnet mask of the TFTP server (example: 255.255.255.0).  
The path on the TFTP server where the updated software is located. This may or may  
not be required depending on the TFTP server configuration. (Example:  
c:\download\)  
File Name  
The full name of the updated software (example: tiger.bin).  
1
2
3
4
5
From the system menu, click general to open the General System window.  
Enter the TFTP Server IP address.  
Enter the TFTP Server Net Mask (subnet mask) for the TFTP server.  
Enter the File Path where the updated software resides on the TFTP server (if necessary).  
Enter the File Name of the updated software file.  
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Chapter 9: Maintenance and Troubleshooting  
6
Click Apply to activate the changes.  
Before initiating a software upgrade, ensure that all files are in the directory  
you specified on the TFTP server when you configured system parameters.  
7
8
9
Click upgrade software to begin the file transfer.  
Click Proceed to confirm the file transfer process.  
Wait for the file to download.  
10 Click Yes to restart the modem.  
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Maintenance  
Using the RS-232 Management Port  
Use the RS-232 management port only when you must manually change the IP address and  
subnet mask. Also, use the port if you do not remember the administrative IP address you  
entered on your modem.  
The Megabit Modem 400F and 500L do not have an RS-232 port.  
1
Connect the modem to a PC as shown below.  
PC, hub or other  
Switch  
network device  
10/100BASE-T port  
RS-232 MGMT port  
(600F and 700F only)  
M
D
I
M
DI-X  
ADSL port  
10BASE-T  
RS232  
Power  
connector  
M
GMT  
S
L
O
W
E
R
Wall jack with DMT ADSL  
service  
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Chapter 9: Maintenance and Troubleshooting  
2
Configure these communication settings (if using terminal emulation, select ANSI):  
•
•
•
•
•
9600 baud  
no parity  
8 data bits  
stop bit  
flow control off  
3
Display the following screen:  
Pairgain Megabit Modem 700F Setup Menu  
===========================================  
BSP version:  
SW version:  
3.0.0(1)  
3.2.0  
IP address:  
192.168.0.1  
255.255.255.0  
IP network mask:  
Default gateway IP address: 0.0.0.0  
Admin IP address: 0.0.0.0  
===========================================  
(1)Enter IP address  
(2)Enter IP network mask  
(3)Enter default gateway IP address  
(4)Enter IP Admin address  
(5)Reset modem  
(6)Change password  
(7)Logout  
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81  
Maintenance  
4
Enter any of these parameters at the prompt:  
•
Type 1 then enter the LAN IP address for the modem (LAN port which is the  
10/100BASE port).  
•
•
•
Type 2 then enter the LAN IP network mask for the modem.  
Type 3 then enter the Default gateway IP address.  
Type 4 then enter the IP address for a device on the LAN that will manage the modem.  
5
Type 5 to reset the modem after you change the LAN IP address and the LAN IP  
network mask.  
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Chapter 9: Maintenance and Troubleshooting  
SETTING UP THE PC TO REQUEST AN IP ADDRESS  
The modem, as a Dynamic Host Configuration Protocol (DHCP) server, provides an IP address  
dynamically to devices on the LAN. When you choose to use DHCP for the modem to serve  
IP addresses to the devices on your LAN, ensure that the TCP/IP properties are set to  
automatically obtain the IP address from the modem.  
The following is an example of how to set up the PC using Microsoft® Windows® 98. If you  
use an operating system other than Windows 98, refer to the appropriate operating system user  
documentation.  
1
2
3
4
5
6
7
Open the Control Panel window by clicking Start, Settings, Control Panel.  
Double-click the Network icon.  
From the Configuration tab, double-click TCP/IP.  
Select Obtain an IP address automatically.  
Click OK to close the TCP/IP Properties window.  
Click OK to close the Network window.  
Click OK to restart the computer.  
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Troubleshooting  
TROUBLESHOOTING  
If this occurs:  
Try this:  
PC or hub not  
communicating  
with the modem  
•
•
•
Check the LINK LED. If it is off, check the cabling to the 10/100BASE port and to the hub  
or the NIC card in the PC to ensure it is secure.  
Check the position of the MDI/MDI-X switch. Set the switch to MDI when connecting to  
a PC. Set the switch to MDI-X when connecting to a hub or router.  
Check that you are using a Web browser (Netscape or Internet Explorer) Version 4.0  
or newer.  
•
•
Check that you have a TCP/IP protocol stack installed on your PC.  
If this is the initial installation, check that you set the IP address on your PC to obtain an  
IP address automatically. Make sure you have configured the LAN IP address of the  
modem to an address that is on the correct subnet. See “Setting Up the PC To Configure  
the Modem” on page 18.  
•
•
You configured the LAN IP address of the modem to an address that is not on the  
same subnet.  
Check the NIC card installation for correct IRQ, drivers, and adapter setup. See  
appropriate documentation for the NIC card.  
If none of the above corrects your problem, contact your service provider.  
SYNC ADSL LED Contact the service provider when the LED remains off indicating that the modem is not  
detecting a transceiver at the far end. Flashing green indicates that the modem is attempting  
to bring up the link. Solid green indicates that the loop is up.  
The modem synchronizes at a minimum transmission rate of 64 kbps. The modem rate  
adapts in increments of 32 kbps.  
MARGIN ADSL  
Contact the service provider when the LED is off indicating that the margin is below that  
LED lights green specified by the service provider.  
LAN TX and RX  
LEDs are not on  
Check that the LINK LED is on. If it is on, you are simply not transmitting or receiving data  
on the LAN 10/100BASE-T port. If the LINK LED is not on, check the section “PC or hub not  
communicating with the modem” in this table.  
ADSL TX and RX Check that the SYNC LED is on. If it is on, you are simply not transmitting or receiving data  
LEDs are not on  
on the WAN ADSL port. If, the SYNC LED is not on, contact your service provider.  
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TECHNICAL REFERENCE  
10  
This chapter provides technical information about how your modem transmits data between  
users on your LAN and a service provider over the WAN.  
TRANSMISSION ON THE WIDE AREA NETWORK  
ATM over DMT ADSL is the technology that provides the high-speed transmission between  
the modem and the service provider. This transmission occurs over a single-pair telephone line.  
The following sections describe these technologies.  
ADSL  
Asymmetric Digital Subscriber Line (ADSL) is the technology used to transmit data between  
the modem and service provider at the physical layer. It provides data at asymmetric rates so  
that downstream traffic from a service provider to you is faster than upstream traffic from you  
to the service provider. The downstream transmission rate is up to 7.552 Mbps, while the  
upstream rate is up to 928 Kbps. Included in the ADSL bandwidth is analog POTS.  
Discrete Multitone (DMT) is the line coding used for ADSL. Basically, it divides the  
bandwidth into subchannels. Some of the subchannels are reserved for analog POTS. The  
other subchannels are allocated to upstream and downstream traffic. Within the upstream  
and downstream subchannels, some subchannels are used for management and  
performance functions.  
DMT ADSL provides rate-adaptive transmission that allows the service provider to deliver you  
the best transmission rate determined by distance and line conditions.  
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Transmission on the Wide Area Network  
ATM  
Asynchronous Transfer Mode (ATM) is a technology that can simultaneously transmit voice,  
data, and video over ADSL. ATM uses fixed-size cells that transmit over a preestablished  
connection called a Permanent Virtual Circuit (PVC). Quality of Service provides UBR.  
ATM cells are 53 bytes that comprise a 5-byte header and 48-byte payload. The header includes  
the Virtual Path Identifier (VPI) and Virtual Channel Identifier (VCI) that you entered when you  
configured each session. The VPI and VCI provide the virtual connection between the modem  
and the service provider. The VPI identifies the Virtual Path (VP) that transports ATM cells in  
a Virtual Channel (VC). The Megabit Modem 400F, 500L, 600F, and 700F has 32 VCs in the  
VP, which provides the 32 sessions.  
Mapping an ATM Session  
Your service provider will give you a VCI and VPI address for each session. The VCI address  
for each session (each session is a VC) can be a number from 32 up to a maximum of 255, with  
the first 32 numbers (0 through 31) reserved. The VCI value for each VC must be unique for  
each of the 32 sessions. The VPI value must always be 0.  
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Chapter 10: Technical Reference  
SYSTEM MODE ENCAPSULATION  
Point-to-Point Protocol (PPP) over ATM or RFC 1483 Bridging/Routing are the two protocols  
you can use to encapsulate data for transport across the ADSL WAN. The following sections  
describe these protocols.  
PPP  
PPP runs over ATM virtual circuits. PPP exists between the hardware layer and the  
network-layer interface protocols. It is a widely used protocol for establishing connections on  
the WAN. PPP provides the set up and release of connections for each session. PAP/CHAP  
provide the authentication for the PPP sessions.  
In PPP over ATM mode, you can map private IP address LAN users to PPP sessions using RFC  
1631 Network Address Translation protocol.  
PAP/CHAP Authentication Security  
Password Authentication Protocol (PAP) and Challenge-Handshake Authentication Protocol  
(CHAP) are two ways to authenticate PPP sessions. PAP and CHAP are both offered since some  
systems support only PAP. With PAP, the modem sends authentication requests to the service  
provider and authentication occurs only once during the life of the link.  
With CHAP, the service provider returns an authentication challenge to the modem during  
authentication. CHAP can be renegotiated during the life of the link. Also, both the modem and  
the service provider must support clear text versions of the password. The CHAP host field must  
be the same on both ends of the session.  
NAT  
RFC 3022 Network Address Translation (NAT) includes two operations. They are Basic NAT  
and Network Address Port Translation (NAPT).  
Basic NAT only deals with IP addresses. Therefore, it is a one-to-one private IP address to  
public IP address (proxy address) mapping. Basic NAT allows you to hide your private  
addresses behind the public IP addresses assigned to a session. Corporations that need flexibility  
using different IP address ranges can benefit from this operation, as the private IP addresses will  
remain the same when the public IP addresses are reassigned.  
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System Mode Encapsulation  
NAPT does not have the limitation of using only the IP address in the translation. It also uses  
TCP/UDP ports. It is a method that allows multiple IP addresses and their TCP/UDP ports to be  
translated into one IP address and its ports. A good candidate for NAPT is a small office with  
multiple hosts but one public IP address. In this case, NAPT allows the entire office to use the  
public IP address to communicate out of the private network.  
An example of NAPT in this small office envionment is the RealPlayer™ application. The  
RealPlayer (client at the office) initiates a TCP connection to the RealServer™ on the Internet,  
which then initiates a UDP connection back to RealPlayer. RealPlayer can then tell the server  
to use a specific UDP port for the UDP connection. The user should set up a static NAT entry  
for the UDP connection for RealPlayer to work properly through NAPT.  
Bridging  
You can configure the Megabit Modem 400F and 700F as a bridge to forward Ethernet data  
based on MAC addresses.  
MAC Layer Bridging  
A bridge moves information across a network from a source to a destination at the data link layer  
(of an OSI reference model). The information is sent to a physical address known as a Media  
Access Control (MAC) address. The Megabit Modem 400F and 700F provide transparent  
Ethernet MAC-layer bridging.  
The bridge learns up to 1024 addresses. Additionally, when you configure the modem, you can  
add 32 static addresses through the static MAC address configuration page.  
Spanning Tree Protocol  
The Megabit Modem 400F and 700F support 802.1d Spanning Tree protocol which eliminates  
loops in a LAN topology by partitioning out redundant links between LAN segments. This  
ensures that there is only one path, or link, between any two nodes on the network. If this link  
goes down, Spanning Tree re-enables partitioned links to create a new loop-free topology if  
possible.  
An example of the active topology is shown on page 89. In the example, the spanning tree  
algorithm partitions out the bridge from LAN A to LAN B, and creates the link from ENET2  
to Bridge 5.  
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Chapter 10: Technical Reference  
Example LAN Physical Network  
This physical configuration is valid only when used with  
Spanning Tree to eliminate loops.  
LAN  
Bridge 1  
ENET 1  
Bridge 2  
Bridge 3  
LAN  
E
N
E
T
Bridge 4  
Bridge 5  
ENET 3  
2
Loop-free Topology  
Using SpanningTree Protocol  
LAN A  
Bridge 1  
ENET 1  
Bridge 2  
Bridge 3  
LAN B  
E
N
E
T
Bridge 4  
Bridge 5  
2
ENET 3  
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System Mode Encapsulation  
Routing  
You can configure the Megabit Modem 400F and 700F router to route Ethernet-encapsulated  
IP datagrams based on IP addresses. Use Routing Information Protocol (RIP) to automatically  
identify the route from the session on the Megabit Modem 400F and 700F to the destination.  
You can specify the direction and version of RIP that allows other routers to update their routing  
tables automatically (for example, information on how many hops between destinations). The  
version of RIP you select for the session must match the version supported by the service  
provider. Versions RIP1 and RIP-1 compatible are used for broadcast. RIP Version 2 is used  
for multicast.  
The router also learns addresses. In addition to the addresses it learns, you can add 32 static  
route entries on the LAN Brouter configuration page. Through the static IP routing feature, you  
can configure the Megabit Modem 400F and 700F as an IP router with statically programmed  
route entries. You can enable this function to provide broadcast filtering and to prevent  
eavesdropping by specifying multiple destination gateways. When static IP routing is enabled,  
you can access only specific remote IP subnets or hosts.  
Since IP routers make forward or filter decisions based on the network-layer IP address instead  
of the MAC hardware address, MAC-level broadcast frames are prevented from reaching  
unwanted destinations in the network.  
When setting parameters for an external router, configure a Static Route entry in any of the  
external routers that may have been specified as a Default Router or as a Gateway. This  
implementation prevents other parties from discovering routes through eavesdropping. The  
format of this entry varies among the various router vendors, but is typically in the form of  
"Destination," "Mask," and "Gateway," where the "Destination" is the remote IP Subnet or host  
address, and "Gateway" is the IP address of the modem on the same subnet as the external  
router.  
Encapsulation for RFC 1483 Bridging/Routing  
Most users select LLC, which allows you to run multiple protocols over the VC. An  
encapsulation header identifies the types of protocol being carried in the transmission (for  
example, IP). VC-MUX allows only one protocol to run over the VC. The type of protocol must  
be negotiated between the modem and the service provider prior to the transmission. Because  
there is only one protocol allowed, the header is not required.  
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Chapter 10: Technical Reference  
MANAGEMENT PROTOCOLS  
SNMP is used to configure system and bridge parameters, to monitor statistics, and to perform  
advanced management tasks.  
SNMP  
This management protocol specifies how to send information between a network management  
system (NMS) and managed devices on a network. Managed devices run a program called an  
agent. The agent interprets SNMP requests and responds to them. The NMS communicates with  
the agents in the managed devices to:  
•
•
•
set configuration  
get configuration  
get status  
A Management Information Base (MIB) defines the configuration and status parameters.  
The Internet Engineering Task Force (IETF) specifies standard MIBs for certain types of  
devices, ensuring any NMS can manage them. Additionally, vendors can issue proprietary  
MIBs for their devices to fit specific needs.  
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Management Protocols  
MIB and Trap Support  
Each managed device has configuration, status, and statistical information that defines its  
functionality and operational capabilities. These elements make up the MIB for the device being  
managed. The MIB defines the kind of information an NMS can retrieve from a managed  
device, and the settings an NMS can control in a managed device.  
Model Number supports the following MIBs:  
•
•
•
RFC 1213: "Management Information Base for Network Management of TCP/IP-Based  
Internet: MIB-II" Supported groups: system, interfaces, IP, ICMP, UDP, and SNMP  
groups.  
RFC 1215: "A Convention for Defining Traps for Use with the SNMP" Supported groups:  
ColdStart, linkUp, linkDown, and authenticationFailure traps. Link status traps are sent for  
events related to Ethernet.  
RFC 1493: "Definition of Managed Objects for Bridges" Supported groups: Base,  
Spanning Tree, and transparent bridging groups. The Spanning Tree MIB can only be  
accessed if the Spanning Tree protocol is enabled.  
•
•
•
•
ADSL MIB  
ATM MIB  
ADC Agent MIB  
ADC Tiger MIB  
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Chapter 10: Technical Reference  
DNS RESOLUTION  
If you want Domain Name System (DNS) resolution, you need to specify the IP address for a  
device to be the DNS resolver. You can also specify another IP address to designate a second  
device for a secondary DNS resolver. The DNS device maps human-readable addresses to IP  
addresses. A human-readable address is one such as maggie.copro.company.com that  
contains a host name and domain. The DNS resolver maps that name to the IP address that is a  
numeric (four octet) value such as 192.168.30.25.  
In previous versions of code, the provisioning of more than one PPP over ATM session required  
the manual configuration of DNS server addresses on the host computers. Changing from one  
session to another session also required manual configuration. This is because different sessions  
required different DNS server addresses, and the modem did not have a way to handle the DNS  
server address on a session by session basis.  
DNS Relay solves this problem. With DNS Relay, the DNS server addresses are configured on  
a per session basis and all the hosts on the LAN have their DNS server addresses configured to  
the same address, the LAN IP address of the modem. Therefore, multiple hosts in different  
sessions configured for DHCP can receive the modem’s LAN IP address as the DNS server  
address. When a host sends out a DNS message to the modem, the modem looks up the source  
IP address in the User Assignment Table to determine the host’s session and the DNS server for  
that session. The modem replaces the destination IP address of the frame with the DNS server  
address configured for that session and sends the frame on its way.  
TFTP SERVER  
Trivial File Transfer Protocol (TFTP) is the TCP/IP standard for file transfer. It provides  
the service with minimal capability and minimal overhead. TFTP uses UDP for  
connectionless delivery.  
A TFTP Server is a device on the network which stores files that other IP devices can access for  
file transfer using the TFTP protocol. The Megabit Modem is one of these IP devices and uses  
theTFTP server to download updated software in binary format.  
Typical TFTP servers are not dedicated only for file transfer. Frequently, Microsoft Windows  
desktops are used to store the binary files. To create a TFTP server, several shareware programs  
are available through the Internet. Once you have selected and installed the TFTP server  
software, configure it to share a directory containing the binary files. To configure the Megabit  
Modem to access the TFTP server, see Chapter 9 on page 77.  
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TFTP Server  
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SPECIFICATIONS AND DATA  
A
WAN INTERFACE SPECIFICATIONS  
ADSL (Asymmetric Digital Subscriber Line)  
Maximum transmission rate:  
Downstream  
7.552 Mbps  
928 kbps  
Upstream  
Minimum transmission rate to sync 64 kbps  
Rate-adaptive data rate resolution  
Signal Format  
32 kbps increments  
DMT (Discrete Multitone) line code  
RJ-11  
Connector  
ATM (Asynchronous Transfer Mode)  
ATM Adaptation Layer  
AAL5 (ITU I.363.5) - Supports encapsulation and  
de-encapsulation of AAL5 Protocol Data Units (PDUs) for  
convergence. Segmentation and Reassembly (SAR) layer  
segments and reassembles AAL5 PDUs into ATM cells that are  
48 byte SAR-PDUs.  
ATM Layer  
Cell Format  
Attaches or strips the 5-byte header to the 48-byte SAR-PDU.  
Performance is a maximum line rate of 17,812 cells per second  
downstream and 2,189 cells per second upstream.  
Format complies with ITU I.361 ATM cell format. Cell delineation  
complies with ITU I.432 Cell Delineation and HEC. Cells are fixed  
length (53 bytes), including 5 bytes of header and 48 bytes of  
payload. Included in the header are the VPI and VCI number.  
Virtual Circuit type  
Permanent Virtual Circuit (PVC) per ATM forum UNI version 3.1  
Maximum Virtual Circuits  
32 virtual circuits that can simultaneously connect to service  
providers for sessions encapsulated either as PPP or RFC 1483  
Bridging/Routing  
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Encapsulation  
ENCAPSULATION  
Selection of an encapsulation protocol from the modem to the service provider occurs on a  
per virtual circuit (session) basis. For example, for the 700F you can configure 32 sessions for  
PPP over ATM mode and configure another 32 sessions for RFC 1483 mode. However, you can  
activate only PPP over ATM sessions or RFC 1483 sessions at a time. You cannot concurrently  
activate PPP sessions and RFC 1483 sessions for all Megabit Modems.  
When you activate RFC 1483 system mode, you can select WAN encapsulation as VC-MUX  
for some sessions and LLC for other sessions.  
PPP  
Link Control Protocol Provides a phase of the PPP negotiation by setting up the physical link (RFC  
(LCP)  
1661).  
Network Control  
Protocol (NCP)  
Occurs after LCP, negotiating parameters for each network interface and uses  
Internet Protocol Control Protocol (IPCP) which is defined in RFC 1332.  
Authentication  
(PAP/CHAP)  
Provides authentication of PPP sessions for security through Password and  
Challenge-Handshake Authentication Protocols (RFC 1994).  
Network Address  
Translation  
Network Address Port Translation (NAPT) maps LAN side private IP address to  
the public IP address assigned to the 32 virtual channels (RFC 1631). You can  
map to two private addresses to each of the 32 sessions for a total of 64  
addresses.  
Routing  
Routing Protocol  
Encapsulation  
Supports RFC 1724 Routing Information Protocol (RIP and RIP Version 2).  
Supports Logical Link Control (LLC) or VC-based multiplexing (RFC 1483).  
Supports up to 32 static routes  
Static Routes  
Address Resolution  
Supports Address Resolution Protocol (ARP) over the LAN port (RFC 826)  
Bridging  
Bridging and Address Implements a transparent learning bridge with a bridging table of 1024 entries.  
Learning  
Encapsulation  
Spanning Tree  
Supports Logical Link Control (LLC) or VC-based multiplexing (RFC 1483).  
Provides Spanning Tree support per IEEE 802.1d.  
96  
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Appendix A: Specifications and Data  
LAN INTERFACE  
Connector  
RJ-45 Ethernet with auto-detecting10/100BASE-T (IEEE 802.3I for 10BASE-T and  
IEEE 802.3u for 100BASE-T)  
PHYSICAL SPECIFICATIONS  
Height  
Width  
Depth  
Weight  
1.2 inches (3.1 cm)  
6.9 inches (17.5 cm)  
9.2 inches (23.4 cm)  
2.2 pounds (1.0 kg)  
POWER SUPPLY  
Voltage  
100 to 240 Vac  
50 to 60 Hz  
0.3 Amps  
Frequency  
Current  
ENVIRONMENTAL  
Temperature  
32° to 122 °F (0° to 50°C)  
Relative Humidity up to 95% non-condensing  
Altitude  
between -200 and 13,000 feet (-61 to 3.962 meters)  
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Compliance  
COMPLIANCE  
Emissions and Immunity  
Compliance  
•
•
•
•
•
FCC Part 15, Subpart B, Class A  
CENELEC/ETSI (IEC 555 and 801)  
CE (EN 55022 and EN 50082-1)  
cUL (UL-1950)  
Operations and Safety  
Compliances  
CE (EN 60950)  
RFCS  
•
•
•
•
•
•
•
RFC 1483 Multiprotocol Encapsulation over ATM (Bridging/Routing)  
RFC 2364 PPP Encapsulation over ATM  
RFC 1661 for PPP LCP  
RFC 1994 for PAP/CHAP Authentication  
RFC 1631 IP Network Address Translator (for NAPT)  
RFC 1350 for TFTP client  
RFC 2131 and RFC 2132 for DHCP server and relay protocols (supported only in RFC 1483  
Bridging mode) and extensions, respectively  
MIBS  
•
•
TR-006 ADSL Forum ADSL Line MIB  
T1.413 section 8.2  
98  
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Appendix A: Specifications and Data  
RATE VS. REACH  
Payload Rate vs Reach on 24 AWG (0.4 mm) with 4dB Margin in Low Noise Environment  
10.000  
1.000  
0.100  
Downstream  
Upstream  
0.010  
Reach in Kilofeet  
Payload Rate vs Reach on 26 AWG (0.5 mm) with 4dB Margin in Low Noise Environment  
10.000  
1.000  
0.100  
Downstream  
Upstream  
0.010  
Reach in Kilofeet  
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Hardware  
HARDWARE  
The following provides additional information about Megabit Modem 400F, 500L, 600F, and  
700F such as the installation kit and modem connectors pinouts.  
Installation Kit  
The following items are included in the installation kit and are used to install the Megabit  
Modem 400F, 500L, 600F, and 700F as shown in Chapter 3 on page 18.  
Part  
Description  
Function  
Rubber feet  
Grey cable  
Four black rubber feet  
Attaches to the base of the modem.  
Silver-satin phone cord with 4-pin modular Connects the modem ADSL connector to the  
plugs (straight-through)  
wall phone jack for access to the Internet.  
Black cable  
CAT 5, cable with 8-pin modular plugs  
(straight-through)  
Connects the modem 10/100BASE-T connector  
to the LAN through a hub or to a PC NIC.  
Power cable Power supply with optional power cord (this Connects the modem POWER connector to the  
item is ordered dependent on the type of  
power supply and cord required for your  
location)  
local power source.  
Screws  
Two 6x1/2-inch sheet metal screws  
Installs into a wall for wall-mounting modems.  
Grey cable  
Flat cable with RJ-45 connectors and a DB-9 Connects the RS-232 MGMT port to an ASCII  
and adapter to RJ-45 adapter.  
terminal or a PC running terminal emulation  
software. Adapter assembly connects to a DB-9  
connector on the PC. Then, one RJ-45 connector  
installs in the adapter and the other connector  
into the console port on the modem.  
100  
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Appendix A: Specifications and Data  
Connector Pinouts  
You may choose to make your own cables for the ADSL RJ-11 connector and the  
10/100BASE-T Ethernet connector on the rear of the modem. The following sections provide  
the pinout information you need.  
ADSL Port  
The following table shows the signal on each pin for the ADSL port. The connector for this  
interface is an RJ-11. See page 18 for the location of this port.  
Pin  
Signal  
1
2
3
4
5
6
Not used  
No connection  
Ring  
Tip  
No connection  
Not used  
10/100BASE-T Port  
The following table shows the signal on each pin when the switch is in either the MDI or  
the MDI-X position for the 10/100BASE-T port. The connector for this interface is an RJ-45.  
See page 18 for the location of this port.  
MDI  
MDI-X  
Signal  
Description  
1
2
3
4
5
6
7
8
3
6
1
4
5
2
7
8
TX+  
Transmit Data (+)  
Transmit Data (-)  
Receive Data (+)  
Not used  
TX-  
RD+  
Not used  
Not used  
RD-  
Not used  
Receive Data (-)  
Not used  
Not used  
Not used  
Not used  
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Hardware  
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TECHNICAL ASSISTANCE  
AND RETURNS  
B
This chapter describes how to contact ADC for technical support.  
TECHNICAL SUPPORT  
Technical support is available 24 hours a day, 7 days a week by contacting the ADC Wireline  
Systems Division Customer Service Engineering Group at one of the following numbers:  
•
Telephone: 800.638.0031  
714.730.3222  
•
•
Fax:  
714.832.9924  
Email  
wsd_support@adc.com  
A Customer Service Engineer answers technical assistance calls Monday through Friday  
between 7:30 AM and 5:30 PM, Pacific Time, excluding holidays. At all other times, an on-duty  
Customer Service Engineer returns technical assistance calls within 30 minutes.  
WORLD WIDE WEB  
Avidia product information can be found at http://www. adc.com using any web browser.  
ADVANCE REPLACEMENT  
Any product determined by ADC not to comply with the applicable warranty within 30 calendar  
days from the date of shipment to the Buyer, or as otherwise authorized, are eligible for advance  
replacement free of charge. A replacement product will be shipped to the Buyer within 24 hours  
of ADC’s receipt of notification from the Buyer.  
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Billing  
If products returned to ADC for advance replacement are not received by ADC within 30  
calendar days of shipment of the replacement product or if no trouble is found (NTF) as  
determined by ADC, the Buyer will be responsible for payment of the cost of the replacement  
product.  
BILLING  
ADC’s repair of products returned for repair, replacement, or credit, whether in warranty or out  
of warranty, which is found to be damaged due to customer negligence or which has had parts  
removed will be billed on a time and material basis.  
In the event that the returned equipment is not covered by warranty, ADC will contact the  
customer with the estimated repair or replacement charges and obtain customer disposition of  
the product if a purchase order has not been provided.  
Equipment returned for repair or replacement is subject to a $70 per unit NTF (no trouble found)  
charge in the event that diagnostic evaluation reveals no evidence of functional failure or  
physical defects.  
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Appendix B: Technical Assistance and Returns  
RETURNS  
To return equipment to ADC Wireline Systems Division:  
1
2
Locate the number of the purchase order under which the equipment was purchased. You  
will need to provide this number to ADC Wireline Systems Division Customer Service to  
obtain a return authorization.  
Call or write ADC Wireline Systems Division Customer Service to ask for a Return  
Material Authorization (RMA) number and any additional instructions. Use the telephone  
number, fax number, or email address listed below:  
•
•
•
Telephone: 800.370.9670  
Fax: 714.832.9923  
Email Address: rma@adc.com  
3
Include the following information, in writing, along with the equipment you are returning:  
•
•
•
Company name, address, telephone number, and the name of a person Customer  
Service can contact regarding this equipment.  
The purchase order number provided to Customer Service when the RMA number was  
requested.  
A description of the equipment, as well as the number of units that you are returning.  
Be sure to include the model and part number of each unit.  
•
•
The shipping address to which Customer Service should return the repaired equipment.  
The reason for the return:  
–
–
The equipment needs an ECO/ECN upgrade.  
The equipment is defective.  
If the equipment is defective, please tell us what you observed just before the  
equipment malfunctioned. Be as detailed in your description as possible.  
–
If there is another reason for returning the equipment, please let us know so we  
can determine how best to help you.  
4
Pack the equipment in a shipping carton.  
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Returns  
5
Write the ADC Wireline Systems Division address and the Return Material Authorization  
Number you received from Customer Service clearly on the outside of the carton and return  
to:  
ADC Wireline Systems Division  
14352 Franklin Ave.  
Tustin, CA 92780-7013  
Attention: RMA (Number)  
All shipments are to be returned prepaid. ADC will not accept any collect  
shipments.  
106  
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CONFIGURATION WORKSHEETS  
C
This appendix provides worksheets where you can record your system settings and system  
sessions configuration information prior to executing the procedures in Chapter 4 through  
Chapter 8.  
The information that you need to configure a modem is listed below. Contact your service  
provider for this information. Use the worksheets in this appendix to record your configuration  
information. When you begin configuration of the modem in Chapter 4, the procedures refer  
you to the proper table so you can use the information you have recorded.  
CONFIGURATION INFORMATION  
1
System mode (WAN connection for the sessions between the modem and the service  
provider): PPP over ATM or Bridge/Router RFC 1483?  
2
If Bridge/Router:  
•
•
•
•
Configure as a Bridge only, as a Router only, or as a Bridge and Router.  
If Bridge or Router, choose LLC or VC-MUX encapsulation.  
If Router, choose version of and direction for RIP (RIP1, RIP2, or RIP1 compatible).  
If Bridge, select whether or not to enable Spanning Tree.  
3
4
If PPP over ATM and using CHAP, identify CHAP authentication name.  
Session address for Ports 1 through 32 (WAN configuration):  
•
•
ATM VPI and ATM VCI (specified for each session)  
when using fixed IP addresses, IP address specified for each session by the  
service provider  
•
for PPP system mode, Login Name and Login Password (specified for each session)  
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Configuration Information  
System Mode Worksheet  
Contact Service Provider:  
Configuration Type  
Choose one for system mode:  
•
Bridging/Routing  
PPP  
__________________________  
•
If Bridging/Routing, select one:  
•
•
•
Bridge and Router?  
Bridge only?  
__________________________  
__________________________  
Router only?  
If Bridging and/or Routing, choose  
Encapsulation method?  
•
LLC  
•
VC-MUX  
When Routing with RIP, select:  
•
RIP direction  
__________________________  
__________________________  
•
Version of RIP  
When Bridging, Enable Spanning Tree?  
(YES OR NO)  
__________________________  
108  
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Appendix C: Configuration Worksheets  
CHAP Host Name Worksheet  
From Service Provider  
Configuration Information  
CHAP Host Name CHAP Host Name  
If PPP over ATM and using  
CHAPforauthentication, enter  
CHAP host name for each  
1 __________________________ 17 __________________________  
2 __________________________ 18 __________________________  
3 __________________________ 19 __________________________  
4 __________________________ 20 __________________________  
5 __________________________ 21 __________________________  
6 __________________________ 22 __________________________  
7 __________________________ 23 __________________________  
8 __________________________ 24 __________________________  
9 __________________________ 25 __________________________  
10 __________________________ 26 __________________________  
11 __________________________ 27 __________________________  
12 __________________________ 28 __________________________  
13 __________________________ 29 __________________________  
14 __________________________ 30 __________________________  
15 __________________________ 31 __________________________  
16 __________________________ 32 __________________________  
session  
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109  
Configuration Information  
WAN Configuration Worksheet  
From Service Provider  
Configuration Information  
ATM Configuration  
VPI  
VCI  
(VPI/VCI for each session)  
1 __________________________ 1 __________________________  
2 __________________________ 2 __________________________  
3 __________________________ 3 __________________________  
4 __________________________ 4 __________________________  
5 __________________________ 5 __________________________  
6 __________________________ 6 __________________________  
7 __________________________ 7 __________________________  
8 __________________________ 8 __________________________  
9 __________________________ 9 __________________________  
10 __________________________ 10 __________________________  
11 __________________________ 11 __________________________  
12 __________________________ 12 __________________________  
13 __________________________ 13 __________________________  
14 __________________________ 14 __________________________  
15 __________________________ 15 __________________________  
16 __________________________ 16 __________________________  
110  
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Appendix C: Configuration Worksheets  
WAN Configuration Worksheet - continued  
From Service Provider  
Configuration Information  
ATM Configuration  
VPI  
VCI  
(VPI/VCI for each session)  
17 _________________________  
18 _________________________  
19 _________________________  
20 _________________________  
21 _________________________  
22 _________________________  
23 _________________________  
24 _________________________  
25 _________________________  
26 _________________________  
27 _________________________  
28 _________________________  
29 _________________________  
30 _________________________  
31 _________________________  
32 _________________________  
17 _________________________  
18 _________________________  
19 _________________________  
20 _________________________  
21 _________________________  
22 _________________________  
23 _________________________  
24 _________________________  
25 _________________________  
26 _________________________  
27 _________________________  
28 _________________________  
29 _________________________  
30 _________________________  
31 _________________________  
32 _________________________  
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111  
Configuration Information  
Login Name / Login Password Worksheet  
From Service Provider  
Login Information  
Login Name and Login  
Password  
Login Name  
Login Password  
(for each session)  
1 ____________________________ 1 ____________________________  
2 ____________________________ 2 ____________________________  
3 ____________________________ 3 ____________________________  
4 ____________________________ 4 ____________________________  
5 ____________________________ 5 ____________________________  
6 ____________________________ 6 ____________________________  
7 ____________________________ 7 ____________________________  
8 ____________________________ 8 ____________________________  
9 ____________________________ 9 ____________________________  
10 ____________________________ 10 ____________________________  
11 ____________________________ 11 ____________________________  
12 ____________________________ 12 ____________________________  
13 ____________________________ 13 ____________________________  
14 ____________________________ 14 ____________________________  
15 ____________________________ 15 ____________________________  
16 ____________________________ 16 ____________________________  
112  
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Appendix C: Configuration Worksheets  
Login Name / Login Password Worksheet - continued  
From Service Provider  
Login Information  
Login Name and Login  
Password  
Login Name  
Login Password  
(for each session)  
17 ____________________________ 17 ____________________________  
18 ____________________________ 18 ____________________________  
19 ____________________________ 19 ____________________________  
20 ____________________________ 20 ____________________________  
21 ____________________________ 21 ____________________________  
22 ____________________________ 22 ____________________________  
23 ____________________________ 23 ____________________________  
24 ____________________________ 24 ____________________________  
25 ____________________________ 25 ____________________________  
26 ____________________________ 26 ____________________________  
27 ____________________________ 27 ____________________________  
28 ____________________________ 28 ____________________________  
29 ____________________________ 29 ____________________________  
30 ____________________________ 30 ____________________________  
31 ____________________________ 31 ____________________________  
32 ____________________________ 32 ____________________________  
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Configuration Information  
Fixed IP Addresses Worksheet  
From Service Provider  
Fixed IP Addresses  
Fixed IP Address  
Fixed IP Addresses  
(for each session)  
1___________  
2___________  
3___________  
4___________  
5___________  
6___________  
7___________  
8___________  
9___________  
10___________  
11___________  
12___________  
13___________  
14___________  
15___________  
16___________  
.
.
.
.
.
.
.
.
.
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
.
.
.
.
.
.
.
.
.
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
.
.
.
.
.
.
.
.
.
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
___________  
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
Not applicable if service provider  
dynamically assigns IP addresses.  
114  
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Appendix C: Configuration Worksheets  
Fixed IP Addresses Worksheet - continued  
Contact Service Provider  
Fixed IP Addresses  
Fixed IP Address  
Fixed IP Addresses  
(for each session)  
17__________  
18__________  
19__________  
20__________  
21__________  
22__________  
23__________  
24__________  
25__________  
26__________  
27__________  
28__________  
29__________  
30__________  
31__________  
32__________  
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
__________  
Not applicable if service provider  
dynamically assigns IP addresses.  
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115  
Configuration Information  
116  
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GLOSSARY  
D
10/100BASE-T  
The Institute of Electrical and Electronic Engineers (IEEE) 802.3 specification for  
Ethernet over thin coaxial cable.  
AAL5  
ADSL  
ATM Adaptation Layer 5.  
Asymmetric Digital Subscriber Line is a technology in which data is transferred from  
the service provider to the subscriber at up to 7.552 Mbps, and transferred from  
subscriber to service provider at up to 928 Kbps. ADSL is the implementation of the  
physical layer for transmission of data.  
ATM  
Asynchronous Transfer Mode is a high bandwidth, low delay, connection-oriented,  
packet-like switching and multiplexing technique that uses 53-byte fixed-size cells to  
transmit voice, video and data over a network. ATM layers define how cells are  
formatted and provides the transport of the fixed length cells between the modem  
and the service provider (or endpoints of the virtual connection).  
attenuation  
The dissipation of the power of a transmitted signal as it travels over copper wire,  
measured in decibels (dB).  
authentication  
BER  
Security feature offered through PAP and CHAP with PPP sessions.  
Bit Error Rate is a measure of transmission quality. The ratio of error bits to the total  
number of bits transmitted.  
bps  
bit-per-second is the number of bits transferred during each second of data  
transmission.  
CBR  
Constant Bit Rate is a Service Class for the modem. It provides constant bit rate data  
with a timing relationship between the source and the destination. Also, a traffic class  
that carries a guaranteed constant bandwidth. Best suited for applications that require  
fixed bandwidth, such as uncompressed voice, video and circuit emulation. CBR is a  
Quality of Service class defined by the ATM Forum for ATM networks.  
cell  
A fixed-length packet. Also, the unit of data transmission used in ATM. Each ATM cell  
contains a fixed-size frame (53 bytes) consisting of a five-byte header and a 48-byte  
payload.  
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community  
string  
A text string required for an SNMP trap to be received by a trap receiver(s). Also, a  
text string that identifies an SNMP community and is associated with specific access  
rights (read-only or read/write).  
CRC  
DMT  
Cyclic Redundancy Check is a method used to verify the accuracy of data  
transmission.  
Discrete Multi-Tone is a modulation coding for an ADSL line. DMT is the modulation  
technology used for the Megabit Modem 400F, 500L, 600F, and 700F ADSL.  
downstream  
traffic  
Communications from a service provider to a user.  
encapsulation  
The inclusion of data in a protocol header prior to transmission, which enables  
successful data transmission between different protocol networks.  
ES  
Errored Seconds is the seconds during which errors occur that prevent the payload  
from being corrected.  
Ethernet  
A protocol used for LAN traffic, which has a transfer rate of 10 or 100 Mbps.  
Non-volatile memory that can be erased and reprogrammed.  
flash memory  
gateway  
A device (generally a router) that provides translation services to allow  
communication between two dissimilar networks.  
IP  
Internet Protocol is a TCP/IP protocol that controls packet transmission.  
IP address  
A 32-bit address used in IP routing. The address consists of four octets separated by  
decimals. The octets comprise a network section, a subnet section (optional) and a  
host section.  
LAN  
LLC  
Local Area Network is a physically connected group of devices between which data  
transmission occurs at high speeds over relatively short distances.  
Logical Link Control is an encapsulation protocol for data that you transmit from the  
modem over the WAN in 1483 Bridging/Routing mode.  
LOF  
LOS  
MAC  
Loss Of Frame is an error indicating that the receiving equipment has lost a frame.  
Loss Of Signal is an error indicating that the receiving equipment has lost the signal.  
Media Access Control is a physical address associated with a device such as a NIC.  
For modem configuration, the MAC is used to map inbound traffic (from a remote IP  
address) to an internal (LAN) IP address. Used with 1483 Bridging/Routing Mode.  
margin  
The noise margin in decibels that the modem must achieve with a BER of 10 -7 or  
better to successfully complete initialization.  
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Appendix D: Glossary  
MIB  
Management Information Base is a set of variables that define the configuration and  
status parameters for network management. Network management stations can  
retrieve information from and write information to an MIB. The Internet Engineering  
Task Force (IETF) specifies standard MIBS for certain types of devices, ensuring any  
NMS can manage the devices. Vendors can specify proprietary MIBs for their devices  
to fit specific needs.  
NAPT  
Network Address and Port Translation provides the means to map private IP  
addresses and TCP/UDP ports to the public IP addresses (proxy addresses) and  
TCP/UDP ports that are set up for the PPP sessions. Used with PPP Mode.  
NVRAM  
Non-Volatile Random Access Memory is a medium for storing system configuration  
information, so the information is not lost when the system is reset.  
octet  
A TCP/IP term indicating eight bits.  
PAP/CHAP  
Password Authentication Protocol and Challenge Handshake Authentication Protocol  
are two ways to authenticate PPP sessions. With PAP, the modem sends  
authentication requests to the service provider and authentication occurs only once  
during the life of the link.  
In CHAP, the service provider returns an authentication challenge to the modem  
during authentication. CHAP can be renegotiated during the life of the link. Also, both  
the modem and the service provider must support clear text versions of the  
password. The CHAP host field must be the same on both ends of the session.  
PDU  
Protocol Data Unit is data as it appears at the interface between a particular sublayer  
and the sublayer immediately below.  
POTS  
PPP  
Plain Old Telephone Service.  
Point-to-Point Protocol exists between the hardware layer and the network-layer  
interface protocols. It is a widely used protocol for establishing connections on the  
Internet. PPP provides the set up and release of connections for each session.  
PAP/CHAP provide the authentication for the PPP sessions.  
proxy IP address The proxy IP address is the WAN IP address for one of the 32 sessions. The proxy  
IP address is used to enter static NAT entries. See IP address.  
PVC  
Permanent Virtual Circuit is a logical connection comprised of a predefined static  
route across a packet-switched network that is always in place and always available.  
QoS  
Quality of Service is the configured traffic parameters that are assigned to a virtual  
circuit, which specifies how quickly and how accurately data is transferred from the  
sender to the receiver.  
RFC  
Request For Comment is a series of notes that contain surveys, measurements, ideas,  
techniques, and observations, as well as proposed and accepted TCP/IP protocol  
standards. RFCs are available on the Internet.  
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RIP  
Routing Information Protocol allows routers to update the routing tables  
automatically (for example with information such as how many hops between  
destinations). The version of RIP you select for the session must match the version  
supported by the service provider. Versions RIP1 and RIP-1 compatible are used for  
broadcast. Version RIP 2 is used for multicast.  
SEF  
Severely Errored Frames is the incoming signal has at least four consecutive errored  
framing patterns.  
SES  
Severely Errored Seconds is the seconds during which more than 2,500 bipolar errors  
are detected on the line.  
session  
The time during which two computers maintain a communication connection. An  
example is a connection configured between the Megabit Modem 400F, 500L, 600F,  
and 700F and the service provider.  
SNMP  
Simple Network Management Protocol is a protocol that specifies how to send  
information between a NMS and managed devices on a network. The managed  
devices run a program called an agent. The agent interprets SNMP request and  
responds to them. SNMP is used to set device configurations, read device  
configurations or read the device status.  
Spanning Tree  
subnet mask  
TCP  
A bridging protocol that detects and prevents loops from occurring in a system  
containing multiple bridges.  
A type of IP address that allows a site to use a single IP address for multiple physical  
networks.  
Transmission Control Protocol is a transport protocol used to map inbound traffic  
(from a remote IP address) to an internal (LAN) IP address. Establishes connection  
with remote user before data transmission.  
TCP/IP  
TFTP  
Transmission Control Protocol/Internet Protocol is a protocol used for  
communications between computers over networks and the internet.  
Trivial File Transfer Protocol is a protocol used to download card images or other files  
from an external TFTP server to the NVRAM of any installed cards, or to upload files  
from an installed card to an external TFTP server.  
trap receivers  
traps  
PCs configured to receive SNMP traps (messages).  
Autonomous, interrupt-driven, SNMP messages sent from a managed node to a  
network management station to indicate that an event has occurred.  
UAS  
UBR  
UnAvailable Seconds is the number of seconds during which the line is unavailable.  
Unspecified Bit Rate is an ATM traffic type used for LAN traffic. When network  
congestion occurs, the data is stored in a buffer until it can be sent.  
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Appendix D: Glossary  
UDP  
User Datagram Protocol is a transport protocol used to map inbound traffic (from a  
remote IP address) to an internal (LAN) IP address. Uses a protocol port number for  
the destination at the remote location.  
upstream traffic  
VCI  
Communications from a user to a service provider.  
Virtual Channel Identifier is a 16-bit field addressing identifier in the header of an ATM  
cell used to route cell traffic. It identifies a particular VC link for a given VP.  
VCMUX  
Virtual Channel Multiplexer-based encapsulation used for networks with large  
numbers of virtual channels making it practical to carry a single protocol per virtual  
channel.  
VC  
VPI  
VP  
A Virtual Channel is a logical connection in the ATM network over which ATM cells are  
transmitted.  
Virtual Path Identifier is an 8-bit field addressing identifier in the header of an ATM  
cell that is used to route cell traffic. It identifies a particular VP link.  
A Virtual Path is a group of VCs carried between two points. The VP provides a means  
of bundling traffic traveling in the same direction. VPs are defined by a unique VPI  
value.  
WAN  
Wide Area Network is a network consisting of nodes located across a large  
geographical area. Also, the connection between a service provider and Megabit 700F  
Modem.  
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INDEX  
Numerics  
C
10/100BASE-T  
cables  
connecting 18  
connector pinouts 101  
description 117  
installation 18  
requirements 15  
A
cell formats 95  
CHAP  
Host Name 109  
adaptation layer 95  
ADSL  
connector pinouts 101  
description 85, 117  
DMT 85  
compliance 98  
configuration  
introduction 1  
service 20  
modem 23  
specifications 95  
viewing status 73  
saving 28, 59, 70  
service provider 13  
web browser 1, 23  
ATM  
adaptation layer 95  
cell format 95  
configuration worksheets 107  
configuring  
description 86, 117  
max VCs 95  
LAN  
PPP Over ATM 58, 69  
LAN user assignments 60  
PC 24  
specifications 95  
attaching modem feet 16  
authentication security 87  
sessions 51, 63  
system settings 35  
web browser 25  
connecting  
B
back panel 17, 18  
bridge/router 13, 87, 88, 107  
description 88  
cables 18  
bridging specifications 96  
modem feet 16  
phone service 21  
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Index  
connector pinouts 101  
downstream  
description 118  
D
transmission rate 1, 85  
defining  
SNMP parameters 38  
E
TFTP parameters 36  
encapsulation methods  
user assignment parameters 60  
bridge/router 87  
PPP 87  
deleting  
PPP Over ATM WAN session 57, 68  
descriptions  
F
factory defaults  
10BASE-T 117  
ADSL 85, 117  
ATM 86, 117  
bridge/router 88  
DMT 85, 118  
DNS 14  
default values 31  
flat-surface mounting 11  
H
host name  
CHAP 109  
downstream 118  
MAC 118  
I
installation  
modem 1  
cable types 15  
introduction 1  
NAT 14, 87, 119  
PAP/CHAP 87  
power cable 14  
subnet mask 120  
TFTP 120  
kit 100  
phone service 13  
requirements 9  
installing the modem 15  
attaching feet 16  
cabling 18  
upstream 121  
DMT ADSL 85  
DMT description 85, 118  
DNS description 14  
DNS resolution 93  
domain name system  
See DNS  
flat-surface mounting 11  
setting MDI/MDI-X switch 17  
wall mounting 12  
IP routing 90  
See routing  
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Index  
installation 15  
L
LAN  
obtaining IP Address automatically 24  
overview 1  
configuring  
PPP Over ATM 58, 69  
configuring users to sessions 60  
interface specifications 97  
viewing statistics 75  
resetting 30  
resetting to factory defaults  
default values 31  
setting MDI/MDI-X switch 17  
storage 9  
layer bridging 88  
LEDs  
technology 1  
indications 20  
transmission speeds 1  
unpacking 9  
login configuration worksheet 112, 113  
user assignments 60  
wall mounting 12  
M
MAC  
modem feet  
connecting 16  
mounting  
description 118  
layer bridging 88  
main menu  
clearances 11, 12  
flat-surface 11  
wall 12  
ADSL 73  
statistics 75  
MDI/MDI-X switch 17  
MIB and trap support 92  
MIBs 98  
N
NAT  
mode of operation  
Bridge/Router RFC1483 48  
PPP over ATM 48  
modem  
description 87, 119  
NAT description 14, 87  
network address port translation  
See NAPT  
adaption rate 84  
attaching feet 16  
configuration process 23  
description 1  
network statistics 75  
P
panel  
back 17, 18  
PAP/CHAP  
flat-surface mounting 11  
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Index  
authentication security 87  
description 87  
R
rate vs.reach 99  
requirements  
cables 15  
parameters  
SNMP 38  
TFTP 36  
installation 9  
phone service 13  
power cable 14  
service provider 13  
site 10  
user assignment 60  
PC  
configuring 24  
phone service  
connecting 21  
system 10  
installing 13  
reset unit 30  
resetting modem 30  
Returns 105  
RFCs 98  
requirements 13  
pinouts 101  
power cable 14  
PPP 87  
router/bridge 13, 87, 88, 107  
routing  
CHAP  
host name 109  
specifications 96  
PPP Over ATM  
configuring  
LAN 58, 69  
specifications 96  
static IP 90  
S
saving a configuration 28, 59, 70  
service  
deleting session 57, 68  
sessions 86, 87  
ADSL 20  
service provider  
configuration 13  
requirements 13  
sessions  
product  
overview 1  
protocols 14  
bridge/router 88  
NAT 87  
configuring 51, 63  
site requirements 10  
SNMP  
PPP 52, 64  
SNMP 91  
parameters  
spanning tree 88  
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Index  
defining 38  
protocol 91  
system menu  
factory default 31  
reset unit 30  
software upgrading 77  
specifications 95  
ADSL 95  
T
technical  
support 103  
ATM 95  
bridging 96  
technical specifications 95  
TFTP  
environmental 97  
LAN interface 97  
physical 97  
description 120  
parameters  
power 97  
defining 36  
PPP 96  
server 93  
routing 96  
transmission rate  
downstream 1, 85  
upstream 1, 85  
troubleshooting 84  
WAN interface 95  
static  
IP routing 90  
statistics 73  
U
statistics menu  
LAN statistics 75  
WAN statistics 76  
storage 9  
unpacking modem 9  
upgrading software 77  
upstream  
description 121  
transmission rate 1, 85  
user assignments  
LAN 60  
subnet mask description 120  
support 103  
MIB and trap 92  
system  
configuring settings 35  
mode of operation  
V
VCI  
Bridge/Router RFC 1483 48  
PPP Over ATM 48  
requirements 10  
configuration worksheet 110  
viewing  
ADSL status 73  
troubleshooting 84  
LAN statistics 75  
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Index  
network statistics 75  
WAN statistics 76  
VPI  
configuration worksheet 110  
W
wall mounting 12  
WAN  
interface specifications 95  
viewing statistics 76  
warranty 103  
web browser configuration 25  
worksheets 107  
login 112, 113  
VCI 110  
VPI 110  
128  
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ADC DSL Systems, Inc.  
14402 Franklin Avenue  
Tustin, CA 92780  
Tel: 714.832.9922  
Fax: 714.832.9924  
For Technical Assistance:  
800.638.0031  
714.730.3222  
´+Q5¶5]¨  
1149215 Rev A  
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