LevelOne Switch GSW 1601TX User Manual

LevelOne

GSW-1601TX

GSW-2401TX

16/24Port 10/100Mbps Switch

with Gigabit option

User's Manual

(Vision 1.0)

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Contents

Package List---------------------------------------------------------------------- iii

Introduction---------------------------------------------------------1

Features------------------------------------------------------------------------------1

Identifying External Components---------------------------------3

Front Panel--------------------------------------------------------------------------3

Rear Panel---------------------------------------------------------------------------4

LED Indicators----------------------------------------------------------------------5

Connecting The Switch--------------------------------------------------5

Connecting End node or Hub or Switch--------------------------------------5

Connecting to Network Backbone or Server--------------------------------6

Configuration------------------------------------------------------8

Main Menu-------------------------------------------------------------------------9

Speed Mode-----------------------------------------------------------------------10

Address Learn---------------------------------------------------------------------12

VLAN--------------------------------------------------------------------------------13

Queues Priority-------------------------------------------------------------------16

Trunk--------------------------------------------------------------------------------17

Uplink Port-------------------------------------------------------------------------20

Monitor Port------------------------------------------------------------------------25

View Configuration---------------------------------------------------------------27

Restore To Factory Default----------------------------------------------------27

Switch Operation-----------------------------------------------------------28

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Troubleshooting--------------------------------------------------30

Technical Specifications---------------------------------------31

RJ-45 Pin Specification----------------------------------------32

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Package List

Check the contents of your package for following parts:

16/24 Port 10/100Mbps Switch

User's manual

Power cord

19” rack mount brackets.

RS232 cable

If any of these pieces are missing or damaged, please contact your

dealer immediately, if possible, retain the carton including the original

packing material, and use them against to repack the product in case

there is a need to return it to us for repair.

iii

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INTRODUCTION

The LevelOne GSW-1601/2401TX 16/24 Port 10/100/1000Mbps

Switch with Gigabit option is designed to allow simultaneous

transmission of multiple packets via an internal high-speed data

channel. This means that it can partition a network more efficiently than

bridges or routers in most environments.

The LevelOne GSW-1601/2401TX 16/24 Port 10/100/1000Mbps

Switch with Gigabit option is equipped with Category 5 copper cable or

fiber optic cable for uplinking to a network backbone or network server.

It is compatible with all 10Mbps, 100Mbps and 1000Mbps Ethernet

environments. The increased speed and extra bandwidth offered by

Gigabit Ethernet will support faster and more users applications with

generating more traffic.

In addition, the LevelOne GSW-1601/2401TX 16/24 Port

10/100/1000Mbps Switch with Gigabit option is also support one

module slot for 2 Ethernet Gigabit ports to uplink to a server or network

backbone. These Gigabit Switches are designed for Plug and Play

installation, allows the network administrator to simply connect the

network and power cables and the Switching/bridging functions begin

automatically.

The front panel of these Gigabit Switches provide LEDs for easy

recognition of the switch operation status and for troubleshooting.

These LEDs display the power status for the system and link/ speed/

collision, full-duplex, transmit and receive status for each port.

The built-in console interface can be used to configure the Switch’s

setting for Priority queuing, VLAN, and Port Trunk Groups, Port

Monitoring and Port Speed.

Features

Complies with the IEEE802.3 Ethernet, IEEE802.3u Fast Ethernet

and IEEE802.3z/ IEEE802.3ab Gigabit Ethernet standard

Provide a module slot for 2-port 10/100/1000T Gigabit Module

(copper model: MDU-0201T) and 2-port 1000SXGigabit Fiber

Module (fiber model: MDU-0200SX) option

Features Store-and-Forward mode with wire-speed filtering and

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forwarding rates

Full/ Half-Duplex capability on each TX port, full duplex only on

1000Base-TX port

Automatic source address learning and aging.

Support up to 16K MAC address

Support up to total 64Mbit(16+2G), and 80Mbit (24+2G) packet

buffers

IEEE802.3x compliant full-duplex flow control, half-duplex flow

control

Broadcast storm control, runt and CRC Filtering eliminates

erroneous packets to optimize the network bandwidth

Support to handle up to 1536 bytes packet

Internal power supply

LED indicators for simple diagnostics and management

Auto MDI/ MDI-X on all 10/100/1000Base TX ports

Support one console port for switch configuration change

Support per port Port-based VLAN and L2 Trunking with link

fail-over

Support IEEE802.1p four Priority queues on each port

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IDENTIFYING EXTERNAL COMPONENTS

This product series provide three different running speed – 10Mbps,

100Mbps, and 1000Mbps in the same hub and automatically

distinguish the speed of incoming connection.

This section describes the hardware features of these Gigabit

Switches. For easier management and control of the switch, familiarize

yourself with its display indicators, and ports. Front panel illustrations

in this chapter display the unit LED indicators. Before connecting any

network device to the hub, read this chapter carefully

There are two different module for expansion:

2 Port 10/100/1000T Gigabit Module

2 Port 1000SX Gigabit Fiber Module

Front Panel

The unit front panel provides a simple interface monitoring the

switching hub. It includes a power indicator for each port.

16 Port 10/100Mbps Switch with Gigabit option

24Port 10/100Mbps Switch with Gigabit option

16 Port 10/100Mbps Switch front panel

24 Port 10/100Mbps Switch front panel

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2 Port 10/100/1000T Gigabit Module

Front Panel

2 Port 1000SX Gigabit Fiber Module

Front Panel

LED Indicator Panel

Refer to the next chapter for detailed information about each of

the switch’s LED indicators.

Twisted-Pair Ports

Use any of these ports to connect stations or hubs to the

switch. These ports are MDI-X ports, which means you can

use ordinary straight-through twisted-pair cable to connect the

switch to PCs, workstations, or servers through these ports.

If you need to connect to another device with MDI-X ports such

as another switch or hub, you should use a crossover cable, or

connect using the Uplink port (described below).

Rear Panel

16/24 Port 10/100/1000Mbps Switch with Gigabit option

AC Power Connector:

For the power cord.

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LED Indicators

LED Function Color

Description

PWR

Green

Lit: Power on

Lit: CPU installed

SMART

LINK/ACT

Green

Green/Yellow

Green Lit: 100Mbps, indicates the adapter is

connected to hub and incoming

Yellow Flash: 10Mbps, traffic entering the port

10/100

Green

Lit: indicate link status and traffic speed

(10/ L10 for 10M, 100/ L100 for 100M,

1000/ L1000 for 1000M)

L10/100/1000

TX/ RX

Green

Lit: indicate data traffic status

(TX for transmitting, RX for receiving)

FDX/ COL

Lit: Full-Duplex

Flash: Half-Duplex/ Collision

Off: Half-duplex or not connected

Reset Switch

At the left side of front panel, the reset switch is designed for

reconfiguring the switch hub without turn off and on the power.

CONNECTING THE SWITCH

Connecting End node or Hub or Switch

1. Place the Switch on a smooth surface or fasten the mounting

brackets with the provided screws in a standard 19” rack

2. Connect the DC jack of AC adapter to the DC inlet socket of

Switch and the other end into the local power source outlet

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3. Connect hub or PC to one port of the Switch using Category 3/4/5

UTP/STP cabling

4. Connect another hub or PC to the other port of Switch by following

the same process as described in Step3.

Notice:

Cable distance for Switch

The cable distance between Ethernet Switch and hub/PC

should not exceed 100 meter; fiber cable distance shall not

exceed 220 meter.

Make sure the wiring is correct

It can be used Category 3/4/5 cable in 10 Mbps operation. To reliably

operate your network at 100Mbps and 1000Mbps, you must use an

Unshielded Twisted-Pair (UTP) Category 5 cable, or better Data Grade

cabling. While a Category 3 or 4 cable may initially seem to work,it

will soon cause data loss.

Connecting to Network Backbone or Server

Connect to the Gigabit Ethernet ports with Category 5 copper cable or

fiber optic cable for uplinking to a network backbone or network server.

These ports operate at 1000Mbps in full-duplex mode. A valid

connection is indicated when the Link LED is light. The following

sections describe the function of LEDs on the front panel.

CPU LED

Color: Green

Label: Smart

Function: The LED light up steadily means CPU installed for

smart function

Power LED

Color: Green

Label: PWR

Function: The LED light up steadily means Power turned on.

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Link/ Speed LED

Color: Green

Label: L10/ L100/ L1000

Function: The LED light up steadily to indicate the transmitting

speed

L10: light up steadily to indicate link up at speed 10M

L100: light up steadily to indicate link up at speed100M

L1000: light up steadily to indicate link up speed 1G

Full/ Half Duplex and Collision LED

Color: Green

Label: FDX/ COL

Function: The indicator LED flash up whenever there is a

collision between a directly attached end node and any other

node, and light up steadily for Full-duplex mode.

TX Activity

Color: Green

Label: LINK/ ACT

Function: Each RJ45 station port on the hub is assigned one

LED for Transmitting the data

RX Activity

Color: Green

Label: LINK/ ACT

Function: Each RJ45 station port on the hub is assigned one

LED for receiving the data.

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Configuration

Connect TO PC

RS-232 serial cable

Prepare a RS-232 serial cable. Attach the 9-pin female connector to

the male connector on the switch. Plug the other side of this cable to

your PC

Hyper Terminal

In Windows 95/98, launch “HyperTerminal”, create a new connection,

and adjust settings as below:

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Main Menu

Launch the new terminal you just set up, and then, turn on the switch.

See the following messages for successful connection.

24-P 10/100M + 2-P 1G(COPER MODULE) switch

Configuration menu [ver:3.12]

[0] Port Setting

[1] Address Learn

[2] VLAN

[3] Queues Priority

[4] Trunk

[5] Uplink Port

[6] Monitor Port

[7] View Configuration

[8] Restore To Factory Default

Select :>>

To enter any of the submenus, simply type the number on the

command line.

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Speed Mode

Entry:

Select “0” from Main Menu.

Purpose:

Media Speed Control for each port.

Default:

All ports are auto- negotiation.

1.Input port number for which you want to configure, ’A’ or ‘a’ for select

all port to configure, type ‘E’ or ‘e’ back to Main Menu, than press

ENTER. For example, input port 1:

which port ? (1 - 26 , 25=G1, 26=G2, E:Exit ,

A:Select all ports)...

Port Setting

[1] Auto-negotiation

[2] 10 Half Duplex

[3] 10 Full Duplex

[4] 100 Half Duplex

[5] 100 Full Duplex

Select :>>

2. Type 1-5 to select speed mode.

Select :>> 1

Enable flow control ? (Y/N)

3. Type ‘Y’ ,’y’ or ‘N’ ,’n’ to enable or disable flow control , After finish

flow -control selection, you can configure another port or type ‘E’ or

‘e’ , press ENTER back to main menu.

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Address Learn

Entry:

Select “1” from Main Menu.

Purpose:

A port’s MAC address register is cleared on power-up, or hardware reset.

If this item is enabled, the dynamically learned SA will be leared if it is

not refreshed in less than the aging time.

Default:

Enable with aging time 5 minutes.

Select :>> 1

Aging Control

[E] Enable

[D] Disable

Example : Enable aging control with aging time 2 minutes.

1. type ‘E’ or ‘e’ to enable aging control

Select :>> e

Max address-aging timer

Max aging time (1 - 10 minute)...

2. input ‘2’ for aging time and back to main menu

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VLAN

Entry:

Select “2” from Main Menu.

Purpose:

Each port of the switch can be assigned to one or multiple VLANs(this

device can be divided into 24 VLANs maximum). Frames from the

source port will only be forwarded to destination ports within the same

VLAN domain. A broadcast/multicast frame will be forwarded to all

ports within the VLAN(s) of the source port except the source port

itself.

An unicast frame will be forwarded to the destination port only if the

destination port is in the same VLAN as the source port. If the

destination port belongs to the another VLAN, the frame will be

discarded .Each port should be assigned with a dedicated uplink port.

Unicast frames with unknown destination addresses will be forwarded

to the uplink port of the source port. An uplink port can either be a

single port or a trunk.

Default:

All ports assigned to one VLAN.

Select :>> 2

VLAN

VLAN Group 1 ,assigned ports>>

[S] Port Select

[D] Port Delete

[A] Select All Ports

[C] Save

[E] Exit

Select :>>

Examples: Suppose the switch with 24 port , assigned port 1,2 to

VLAN group 1 ,port 5,6 belong to VLAN group 2 ,others be assigned to

VLAN group3 ,please follow below steps :

1. type ‘S’ or ‘s’ than input ‘1’ , press ENTER

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Select :>> s

Which Port To be Selected (1 - 26)..., (25 = G1 26 = G2)

VLAN

VLAN Group 1 ,assigned ports>> 1

[S] Port Select

[D] Port Delete

[A] Select All Ports

[C] Save

[E] Exit

2. type ‘S’ or ‘s’ than input ‘2’ ,press ENTER

Select :>> s

Which Port To be Selected (1 - 26)..., (25 = G1 26 = G2)

VLAN

VLAN Group 1 ,assigned ports>> 1 2

[S] Port Select

[D] Port Delete

[A] Select All Ports

[C] Save

[E] Exit

3. type ‘C’ or ‘c’ , than you can see “Group 1 >> 1 2” on the

screen ,that means VLAN group 1 with port 1,2 completed

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Select :>> c

Please Wait !!

VLAN

Group 1 >> 1 2

VLAN Group 2 ,assigned ports>>

[S] Port Select

[D] Port Delete

[A] Select All Ports

[C] Save

[E] Exit

Select :>>

4. repeat step 1 through 3 but input ‘5’ and ‘6’ to assigned [port 5 ,6 ] to

next VLAN group ,than you can see the result below

VLAN

Group 1 >> 1 2

Group 2 >> 5 6

VLAN Group 3 ,assigned ports>>

[S] Port Select

[D] Port Delete

[A] Select All Ports

[C] Save

[E] Exit

Select :>>

5. type ‘E’ or ‘e’ will assigned others to VALN group 3 and back to main

menu.

6. assigned with a dedicated uplink port for each VLANs, please refer

to section of “Uplink Port”

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Queues Priority

Entry:

Select “3” from Main Menu.

Purpose:

The switch can support priority either from tagged frame or based on

the input ports. This entry is for port-based priority, level 0 stand for the

lowest priority, level 7 as highest priority. Flow control will be disable if

priority level 7 was selected .

Default:

All ports are cleared to priority zero on power-up, or hardware reset.

Select :>> 3

which port ? (1 - 24 , E:Exit )...

Example : Set port 1 to priority level 7.

input ‘1’ for select port

Priority level ? (0 - 7 , E:Exit )...

2. input ‘7’ priority level

which port ? (1 - 24 , E:Exit )...

3. type ‘E’ or ‘e’ back to main menu

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Trunk

Entry:

Select “4” from Main Menu.

Purpose:

This switch can assigned port 1 – 8 to trunk 0 or trunk 1,port 9 – 16 to

trunk 2 or trunk 3 , port 17 – 24 to trunk 4 or trunk 5, with L2 Trunking

automatically load-balances among its member ports through the use

of unique and statistical methods, and provides link resiliency

(link-fail-over function) when one or more of the link in a trunk group

fails.

Default:

All trunks disable.

Select :>> 4

Trunk

Which Trunk

[0] Trunk 0 (Disable)

[1] Trunk 1 (Disable)

[2] Trunk 2 (Disable)

[3] Trunk 3 (Disable)

[4] Trunk 4 (Disable)

[5] Trunk 5 (Disable)

[6] Trunk 6 (Disable) [Giga]

[E] Exit

Examples: Suppose the switch with 24 port , assigned Trunk 0 with 3

ports member ,Trunk 2 with 8 ports member. follow below steps :

1. type ‘0’ to start trunk 0 setting

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Select :>> 0

Trunk 0 ,member >>

[A] Add

[D] Delete

[C] Setting

[E] Exit

2. type ‘A’ or ‘a’ three times to assigned trunk port member

Trunk 0 ,member >>port 1 2 3

[A] Add

[D] Delete

[C] Setting

[E] Exit

Select :>>

3. type ‘C’ or ‘c’ to finish setting

Select :>> c

Please Wait !!

Which Trunk

[0] Trunk 0 (1 2 3 )

[1] Trunk 1 (Disable)

[2] Trunk 2 (Disable)

[3] Trunk 3 (Disable)

[4] Trunk 4 (Disable)

[5] Trunk 5 (Disable)

[6] Trunk 6 (Disable) [Giga]

[E] Exit

4. Repeat step 1-3 but select trunk 2 and type ‘A’ or ‘a’ 8 times

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Trunk 2 ,member >>port 9 10 11 12 13 14 15 16

[A] Add

[D] Delete

[C] Setting

[E] Exit

Select :>> c

Please Wait !!

Which Trunk

[0] Trunk 0 (1 2 3 )

[1] Trunk 1 (Disable)

[2] Trunk 2 (9 10 11 12 13 14 15 16 )

[3] Trunk 3 (Disable)

[4] Trunk 4 (Disable)

[5] Trunk 5 (Disable)

[6] Trunk 6 (Disable) [Giga]

[E] Exit

5. type ‘E’ or ‘e’ return to main menu

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Uplink Port

Entry:

Select “5” from Main Menu.

Purpose:

The uplink port provides a way to connect the switch with a repeater

hub, a workgroup switch, a router, or any type of interconnecting

device compliance with IEEE 802.3 standards. Switch will send all

frames with unmatched DA and multicast/broadcast frames to the

uplink port. It is very important that each port is assigned to an uplink

port, or data frames might be lost. The uplink port should be configured

to be within the same VLAN as the source port. If the uplink port is not

a member of the VLAN, the broadcast or multicast frames will not be

forwarded to its designated uplink port. Multiple VLANs can share the

same uplink port.

Default:

Disable

Select :>> 5

Uplink Port

UpLink Group 1 ,assigned ports>>

[S] Port Select

[D] Port Delete

[A] Select All Ports

[C] Continue

[E] Exit

Example : assume already configure two VLANs ,VLAN A have port

1 ,2 ,3 ,4 ,5, 6,7,8,9. others belong to VLANs B .assign uplink port 9 for

VLANs A ,port 10 for VLAs B.

1. type ‘S’ or ‘s’ to select port

Select :>> s

Which Port To be Selected (1 - 26)..., (25 = G1

26 = G2)

2. input ‘1’ and press ENTER

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Uplink Port

UpLink Group 1 ,assigned ports>> 1

[S] Port Select

[D] Port Delete

[A] Select All Ports

[C] Continue

[E] Exit

Select :>>

3. repeat step 1,2 to select port 2,3,4,5 ,6,7,8,9 ,then see the result

below.

UpLink Group 1 ,assigned ports>> 1 2 3 4 5 6 7 8 9

[S] Port Select

[D] Port Delete

[A] Select All Ports

[C] Continue

[E] Exit

Select :>>

4. type ‘C’ or ‘c’ to continue

Select :>> c

Please Wait !!

Uplink Port Select

[A] port 1 [B] port 2 [C] port 3 [D] port 4 [E] port 5

[F] port 6 [G] port 7 [H] port 8 [I] port 9 [J] port 10

[K] port 11 [L] port 12 [M] port 13 [N] port 14 [O] port 15

[P] port 16 [Q] port 17 [R] port 18 [S] port 19 [T] port 20

[U] port 21 [V] port 22 [W] port 23 [X] port 24 [Y] port G1

[Z] port G2

Select :>>

5. type ‘I’ or ‘i’ to select uplink port ,as you can see bellow, “Group 1 >>

1 2 3 4 5 6 7 8 9 --> uplink to port 9” means port 1,2,3,4,5 ,6,7,8,9,have

uplink to port 9.

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Select :>> e

Uplink Port

Group 1 >> 1 2 3 4 5 6 7 8 9--> uplink to port 9

UpLink Group 2 ,assigned ports>>

[S] Port Select

[D] Port Delete

[A] Select All Ports

[C] Continue

[E] Exit

Select :>>

6. repeat steps1 –5 to assign others to uplink port 10 ,as

result below:

Select :>> j

Uplink Port

Group 1 >> 1 2 3 4 5 6 7 8 9 --> uplink to port 9

Group 2 >> 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

-->

uplink to port 10

UpLink Group 3 ,assigned ports>>

[S] Port Select

[D] Port Delete

[A] Select All Ports

[C] Continue

[E] Exit

Select :>>

7. type ‘E’ or ‘e’ back to main menu

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Link to another switch via signal port or TRUNK port

Please create a uplink port for any port or trunk-port you want

to cross link to another switch, there is a example for 16 + 2G

cross link via G1 port ,refer to the steps under :

16-P 10/100M + 2-P 1G(COOPER MODULE) [ver:3.12]

[0] Port Setting

[1] Address Learn

[2] VLAN

[3] Queues Priority

[4] Trunk

[5] Uplink Port

[6] Monitor Port

[7] View Configuration

[8] Restore To Factory Default

Select :>> 5

Uplink Port

UpLink Group 1 ,assigned ports>>

[S] Port Select

[D] Port Delete

[A] Select All Ports

[C] Continue

[E] Exit

Select :>> a

Please Wait !!

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UpLink Group 2 ,assigned ports>>

[S] Port Select

[D] Port Delete

[A] Select All Ports

[C] Continue

[E] Exit

Select :>>e

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Monitor Port

Entry:

Select “6” from Main Menu.

Purpose:

The switch supports port monitoring. This feature provides complete

network monitoring capability at 100 Mbit/s. A copy of egress (TX) data

and ingress (RX) data of the monitored port is sent to their respective

snooping ports.

Default:

Disable

Select :>> 6

Monitor Port

[M] Monitored Port

[I] Monitoring Port for Incoming Packets

[O] Monitoring Port for Outgoing Packets

[D] Disable Port Monitor

[E] Exit

Select :>>

Example : Monitored Port 1 , Monitoring for incoming packets port 2,

Monitoring for outgoing packets port 3.

1. type ‘M’ or ‘m’ to select Monitored Port

Select :>> m

Which port to be monitored (1 - 24)...

2. input ‘1’ and press ENTER

3. repeat step1 –2 for monitoring port incoming packets and outgoing

packets.

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4. type ‘E’ or ‘e’ back to main menu.

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View Configuration

Entry:

Select “7” from Main Menu.

Purpose:

Diplay configuration of port setting,address

learn,VLAN,priority,trunk,uplink port, monitor port.

Select :>> 7

[Port Setting]

F:full duplex ,H:half duplex ,Y:flow control enable ,N:flow

control disable

[ 1] Auto /Y [ 2] Auto /Y [ 3] Auto /Y [ 4] Auto /Y

[ 5] Auto /Y [ 6] Auto /Y [ 7] Auto /Y [ 8] Auto /Y

[ 9] Auto /Y [10] Auto /Y [11] Auto /Y [12] Auto /Y

[13] Auto /Y [14] Auto /Y [15] Auto /Y [16] Auto /Y

[17] Auto /Y [18] Auto /Y [19] Auto /Y [20] Auto /Y

[21] Auto /Y [22] Auto /Y [23] Auto /Y [24] Auto /Y

[G1] Auto /Y [G2] Auto /Y

[Address Learn]

aging times = 5 minutes

press any key to continue ...

[Current VLAN]

Group 1 >> 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 G1 G2

press any key to continue ...

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[Priority]

[ 1]=0 [ 2]=0 [ 3]=0 [ 4]=0

[ 5]=0 [ 6]=0 [ 7]=0 [ 8]=0

[ 9]=0 [10]=0 [11]=0 [12]=0

[13]=0 [14]=0 [15]=0 [16]=0

[17]=0 [18]=0 [19]=0 [20]=0

[21]=0 [22]=0 [23]=0 [24]=0

[G1]=0 [G2]=0

[Current TRUNK]

Disable

press any key to continue ...

[Current UpLink]

Group 1 >> 1 2 3 4 5 6 7 8 9 --> uplink to port 9

Group 2 >> 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 -->

uplink to port 10

[Monitor Port]

Disable

press any key to continue ...

Restore To Factory Default

Entry:

Select “8” from Main Menu.

Purpose:

Restore to the default setting as mention before.

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Switch Operation

Address Table

The LevelOne 16/24 Port 10/100/1000Mbps Switch with Gigabit option

is implemented with an address table. This address table composed of

many entries. Each entry is used to store the address information of

some node in network, including MAC address, port no, etc. This

information comes from the learning process of Ethernet Switch..

Learning

When one packet comes in from any port. The LevelOne 16/24 Port

10/100/1000Mbps Switch with Gigabit option will record the source

address, port no. and the other related information in address table.

This information will be used to decide either forwarding or filtering for

future packets.

Forwarding & Filtering

When one packet comes from some port of the Ethernet Switching, it

will also check the destination address besides the source address

learning. The Ethernet Switching will lookup the address-table for the

destination address. If not found, this packet will be forwarded to all the

other ports except the port which this packet comes in. And these ports

will transmit this packet to the network it connected. If found, and the

destination address is located at different port from this packet comes

in, the Ethernet Switching will forward this packet to the port where this

destination address is located according to the information from

address table. But, if the destination address is located at the same

port with this packet comes in, then this packet will be filtered. Thereby

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increasing the network throughput and availability

Store-and-Forward

Store-and-Forward is one type of packet-forwarding techniques.

Store-and Forward Ethernet Switching stores the incoming frame in an

internal buffer, do the complete error checking before transmission.

Therefore, no error packets occurrence, it is the best choice when a

network needs efficiency and stability.

The Ethernet Switch scans the destination address from the

packet-header, searches the routing table provided for the incoming

port and forwards the packet, only if required. The fast forwarding

makes the switch attractive for connecting servers directly to the

network, thereby increasing throughput and availability. However, the

switch is most commonly used to segment existing hubs, which nearly

always improves overall performance. A Ethernet Switching can be

easily configured in any Ethernet network environment to significantly

boost bandwidth using conventional cabling and adapters.

Due to the learning function of the Ethernet switching, the source

address and corresponding port number of each incoming and

outgoing packet are stored in a routing table. This information is

subsequently used to filter packets whose destination address is on

the same segment as the source address. This confines network traffic

to its respective domain, reducing the overall load on the network.

The Gigabit Switch performs "Store and forward" therefore, no error

packets occur. More reliably, it reduces the re-transmission rate. No

packet loss will occur.

Auto-Negotiation

The STP ports on the Gigabit Switch have built-in “Auto-negotiation”.

This technology automatically sets the best possible bandwidth when a

connection is established with another network device (usually at

Power On or Reset). This is done by detect the modes and speeds at

the second of both device is connected and capable of, Both 10Base-T

and 100Base-TX devices can connect with the port in either Half- or

Full-Duplex mode. 1000Base-TX and 1000Base-SX can only

connected Full-duplex mode.

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Troubleshooting

This chapter contains information to help you solve problems. If

LevelOne GSW-1601/2401TX 16/24 Port 10/100/1000Mbps Switch

with Gigabit option is not functioning properly, make sure the

Ethernet Switch was set up according to instructions in this manual..

The Link LED is not lit

Solution:

Check the cable connection and remove duplex mode of LevelOne

GSW-1601/2401TX 16/24 Port 10/100/1000Mbps Switch with Gigabit

option

Some stations can not talk to other stations located on the other

port

Solution:

The address table may contain older information than of the address

table of that node. Please power down to refresh the address

information.

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TECHNICAL SPECIFICATIONS

Standard: IEEE802.3. IEE802.3u, IEEE802.3z, IEEE802.3ab

Network Media:

10Base-T – UTP/STP category 3 or 5 cable

100Base-TX – UTP/STP category 5 cable

1000Base-TX, 4 pairs category 5 cable

1000Base-SX, Multi-mode 62.5/125µm fiber optic cable

Connector: STP RJ-45 port TX

SC connector for 1Gbps FX

LED indicators:

System – Power OK LED.

Individual port:

10/100Mbps TX ports– link/activity, speed, duplex and collision

LEDs

Gigabit copper port: Link1000, Link 100, Link 10, FDX/Col,,

TX, RX activity LEDs

Gigabit port: Link, Activity LEDs

Dimension: 440mm x 245mm x 45mm

Temperature: Operating – 0? to 50? Storage – -20? to 70?

Humidity: Operating – 10% to 90% RH

Input Power Requirement: 100 - 240VAC, 50 – 60Hz,

Auto-sensing

Storage – 5% to 90%

Registrations: FCC Part 15 Class A, CE

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RJ-45 PIN SPECIFICATION

When connecting your LevelOne GSW-1601/2401TX 16/24 Port

10/100/1000Mbps Switch with Gigabit option to another switch, a

bridge or a hub, a modified crossover cable is necessary. Please

review these products for matching cable pin assignment.

The following diagram and tables show the standard RJ-45

receptacle/connector

and

their

assignments

for

the

switch-to-network adapter card connection, and the straight / crossover

cable for the Switch-to-switch / hub / bridge connection.

RJ-45 Connector pin assignment

Contact

Media Direct Interface Signal

TX + (transmit)

TX - (transmit)

Rx + (receive)

Not used

Rx - (receive)

Not used

The standard cable, RJ-45 pin assignment

The standard RJ-45 receptacle/connector

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The following shows straight cable and crossover cable connection:

Straight cable for Switch (uplink MDI-II port) to switch/Hub or

other devices connection

Crossover cable for Switch (MDI-X port) to switch/hub or other

network devices (MDI-X port) connection

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