Comtrend Corporation CT-520 Manuale utente

CT-520

SHDSL Router

User’s Manual

Version 3.52_5, 11-27-2002

261014-028

Preface

This manual is written for software version 3.52_5. It is designed to provide

information to network administrators. It covers the installation, operation and

applications of the CT-520 SHDSL router.

manual is subject to change without notice. The information and messages

contained herein are proprietary to Comtrend Corporation. No part of this

manual may be translated, transcribed, reproduced, in any form, or by any means

without prior written permission by Comtrend Corporation.

Contacting us

The reader is presumed to have a basic understanding of telecommunications. For

product updates, new product releases, manual revisions, software upgrades,

technical support, visit Comtrend Corporation at: http://www.comtrendcorp.com

Technical support

If your modem is malfunctioning or you require technical service please send

Email to: mailto:globalsp@comtrendcorp.com

Warning

 Before servicing or disassembling this equipment, always disconnect all power

and telephone lines from the wall outlet.

 Use an appropriate power supply and a UL Listed telephone line cord.

Specification of the power supply is clearly stated in Appendix B -

Specification.

iii

CHAPTER 1 OVERVIEW.......................................................................1

1.1 Application..................................................................................... 1

1.2 Faceplate LED Indicators.................................................................. 2

CHAPTER 2 INSTALLATION ................................................................3

2.1 Preparing for Hardware Installation ................................................... 3

2.2 Rear-panel Connections ................................................................... 4

CHAPTER 3 WEB-BASED ACCESS ........................................................5

3.1 Login ............................................................................................ 5

3.2 Web Page Layout ............................................................................ 7

3.3 Password Setup .............................................................................. 8

3.4 Write System Configurations........................................................... 10

3.5 Load Factory Default Values............................................................ 11

CHAPTER 4 CONFIGURING THE LAN INTERFACE...............................12

CHAPTER 5 CONFIGURING THE WAN INTERFACE .............................14

5.1.1 RFC-1483 Bridged Mode .............................................................. 15

5.1.2 RFC-1483 Routed ....................................................................... 16

5.1.3 PPPoA....................................................................................... 17

5.1.4 PPPoE....................................................................................... 19

5.1.5 VC Data Flow Control.................................................................. 21

5.1.6 Setting up an ISP....................................................................... 24

CHAPTER 6 BRIDGING .....................................................................26

6.1 Spanning Tree Protocol .................................................................. 26

6.2 Static Bridging.............................................................................. 27

CHAPTER 7 ROUTING .......................................................................28

7.1 Static Route ................................................................................. 28

7.2 Set-up the RIP function.................................................................. 30

7.3 Displaying the Routing Table........................................................... 32

CHAPTER 8 SNMP.............................................................................33

8.1 Enable SNMP................................................................................ 33

8.2 Disable SNMP ............................................................................... 34

CHAPTER 9 NAT ...............................................................................35

9.1 Multiple to One ............................................................................. 36

9.2 One to One NAT............................................................................ 37

9.3 Multi-NAT .................................................................................... 38

9.4 Virtual Server............................................................................... 40

CHAPTER 10 DHCP ...........................................................................41

10.1 DHCP Server ............................................................................. 41

10.2 DHCP Relay ............................................................................... 42

CHAPTER 11 DNS PROXY..................................................................43

CHAPTER 12 IGMP ...........................................................................44

CHAPTER 13 MAINTENANCE AND DIAGNOSTICS ..............................46

13.1.1 Software Upgrade and Configuration Backup /Restoration.............. 46

13.2 OAM Loopback........................................................................... 50

13.3 Ping ......................................................................................... 51

13.4 Performance Monitoring .............................................................. 52

13.5 System statistics........................................................................ 52

13.6 TCP-IP statistics ......................................................................... 53

13.7 Interface Monitor ....................................................................... 54

CHAPTER 14 APPLICATION EXAMPLE ...............................................55

14.1 Adding the Static Route (Web) ..................................................... 55

CHAPTER 15 MONITORING THE DEVICE ...........................................57

15.1 Monitoring the SHDSL Line .......................................................... 57

15.2 Performance statistics................................................................. 58

CHAPTER 16 CONSOLE ACCESS ........................................................60

16.1.1 Login ..................................................................................... 60

16.1.2 Keyboard Operations................................................................ 62

16.1.3 Motoring the SHDSL Line Status ................................................ 65

16.1.4 Password Setup....................................................................... 65

16.1.5 Retrieve the Factory Default Settings.......................................... 66

16.1.6 Disable the Web Browser .......................................................... 66

16.1.7 Save the Configurations ........................................................... 67

CHAPTER 17 TELNET ACCESS ...........................................................68

17.1 Setting a Common IP Address...................................................... 68

17.2 Telnet Access............................................................................. 70

APPENDIX A: SPECIFICATIONS ..........................................................71

APPENDIX B - PIN ASSIGNMENTS ......................................................74

GLOSSARY . ............................................................................75

CHAPTER 1 Overview

The SHDSL router satisfies the needs of multiple users in small/home offices and

remote/branch offices. It provides symmetrical transmission speeds of up to 2.3

Mbps through a SHDSL connection, over one ordinary telephone line. In addition,

it supports up to 16 virtual concurrent connections to multiple destinations.

The SHDSL router can be used for variety of applications, including video

conferencing, remote training, e-commerce, and other multimedia applications.

Easy configuration and monitoring can be accomplished using the Web browser.

The SHDSL router has full routing capabilities to segment/route IP protocol and is

capable of bridging other protocols. It can be also configured in either server or

client mode enabling point-to-point connectivity between two sites.

1.1 Application

The router can be used for DSLAM and point-to-point applications.

DSLAM Application

Point to Point Application

1.2 Faceplate LED Indicators

LED Color Mode Function

On AC power input is supplied to this unitPOWER Green

Off Power is not connected

Off Normal status

On An alarm is occurring

ALERT Red

Flash Software downloading or self-testing

On Transmit data or receive data over Ethernet linkACT Green

Off No data transmitted or received over the Ethernet link

COL Yellow On Collision occurs over Ethernet

On The physical link through RJ11 connection cable is

established

Flash SHDSL line is training

LINK Green

Off SHDSL connection not established

On Receive data over SHDSL linkData RX

Green

Off No data received over the SHDSL link

On Transmit data over the SHDSL linkData TX Green

Off No data transmitted over the SHDSL link

CHAPTER 2 Installation

2.1 Preparing for Hardware Installation

The following equipment may be necessary to install the router:

 AC power adapter

A power adapter is shipped with the router.

 LAN connection cable

Use an RJ45 cable to connect the device to a PC or Hub.

 RJ11 cable

An RJ11 cable is needed to connect to the LINE port to the wall outlet.

 Console Port Cable –

An RS-232, DB9-to-DB9 straight-through cable is required to connect the device

to a terminal via the console port.

 VT-100 Compatible Terminal –

This terminal is required to perform the management via the console port. This is

normally a terminal with a VT-100 emulation program, such as Telix and

HyperTerminal Edition5.

2.2 Rear-panel Connections

Step 1 DSL connection

Connect the supplied telephone cable to the port marked LINE at the back of the

SHDSL router. Connect the other end of the cable to your telephone-line wall

outlet. Ensure your computer is turned on before you connect the DSL line to the

router. A green LED on the front of the device labeled LINK will illuminate steadily.

If the SHDSL LINK LED does not illuminate steadily within one minute of it being

connected, check your cable connections to ensure they are correct and securely

installed.

Step 2 Ethernet connection

Insert one end of the RJ45 Ethernet cable into the port marked LAN on the back of

the SHDSL router. Connect the other end of the cable into your Ethernet Network

Interface Card (NIC) installed in your computer. When the Ethernet connection is

established, the correspondent green LED on the front panel labeled LAN will

illuminate steadily.

Step 3 Power connection

Connect the supplied external AC adapter into the DC power outlet on the back of

the router. Connect the power supply into your wall outlet or surge protector.

Turn on the power switch. After powering on, the router performs a self-test.

Wait for a few seconds until the test is finished, then the router will be ready to

operate. The POWER indicator on the front of the router will illuminate green to

indicate that power is being supplied to the router.

Caution 1: If the router fails to power up, or it malfunctions, first verify that the

power supply is connected correctly. Then power it on again. If the

problem persists, contact our technical support engineers.

Caution 2: Before servicing or disassembling this equipment always disconnect all

power cords and telephone lines from the wall outlet.

CHAPTER 3 Web-based Access

This section describes how to manage the router via the Web browser from the

remote end. The Web page is best read with a display resolution of 1024 x 768.

To change the resolution you can go to the Microsoft Windows control panel and

click on the Display icon, and change the display settings. You will find the display

settings there.

3.1 Login

STEP 1: Configure your workstation to the same network segment as the router,

if for example the router is set to its default address of 192.168.1.1, we

could set the PC to 192.168.1.133 and subnet mask 255.255.255.0.

STEP 2: Start your Internet browser.

STEP 3: Enter the IP address of the router in the Web address field. For

example, if the IP address is 192.168.1.1, enter http:// 192.168.1.1

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