Comtrend NexusLink-5631 User Manual

NexusLink 5631

Wireless ADSL2+ Bonded Router

User Manual

Version C1.3, February 19, 2008

261076-005

Warning

 Before servicing or disassembling this equipment, always disconnect all

power and telephone lines from the device.

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

Appendix D: Specifications clearly states these requirements.

Preface

This manual provides information for network administrators. It covers the

installation, operation and applications of this device. The individual reading this

manual is presumed to have a basic understanding of telecommunications.

This document is subject to change without notice. For product updates, new

product releases, manual revisions, software upgrades, etc., visit our website at

http://www.comtrend.com

contained herein is proprietary to Comtrend Corporation. No part of this document

may be translated, transcribed, reproduced, in any form, or by any means without

the prior written consent of Comtrend Corporation.

Technical support

If you find the product to be inoperable or malfunctioning, please contact a technical

support engineer for immediate service by email at INT-support@comtrend.com

Save Our Environment

This symbol means that when the equipment has reached the end of its

useful life, it must be taken to a recycling centre and processed separate

from domestic waste.

The cardboard box, the plastic contained in the packaging, and the parts that make

up this device can be recycled in accordance with regionally established regulations.

Never throw-out this electronic equipment along with your household waste.

You may be subject to penalties or sanctions under the law. Instead, ask for

instructions from your municipal government on how to correctly dispose of it.

Please be responsible and protect our environment.

CHAPTER 1 INTRODUCTION....................................................................................................5

1.1 FEATURES........................................................................................................................................5

1.2 APPLICATION ...................................................................................................................................6

1.3 FRONT PANEL LED INDICATORS......................................................................................................7

CHAPTER 2 INSTALLATION......................................................................................................8

2.1 HARDWARE INSTALLATION ..............................................................................................................8

2.2 USB DRIVER AUTORUN INSTALLATION.........................................................................................10

2.3 USB DRIVER MANUAL INSTALLA TION (64BIT OS)........................................................................13

CHAPTER 3 WEB USER INTERFACE.....................................................................................18

3.1 TCP/IP SETTINGS ..........................................................................................................................18

3.2 LOGIN PROCEDURE........................................................................................................................19

3.3 DEFAULT SETTINGS .......................................................................................................................20

CHAPTER 4 QUICK SETUP.......................................................................................................21

4.1 AUTO QUICK SETUP.......................................................................................................................23

4.2 MANUAL QUICK SETUP .................................................................................................................24

4.2.1 PPP over ATM (PPPoA) and PPP over Ethernet (PPPoE)............................................26

4.2.2 MAC Encapsulation Routing (MER)..............................................................................31

4.2.3 IP Over ATM...................................................................................................................36

4.2.4 Bridging..........................................................................................................................40

CHAPTER 5 DEVICE INFO........................................................................................................42

5.1 WAN .............................................................................................................................................44

5.2 STATISTICS .....................................................................................................................................45

5.2.1 LAN Statistics..................................................................................................................45

5.2.2 WAN Statistics.................................................................................................................46

5.2.3 ATM statistics.................................................................................................................47

5.2.4 ADSL Statistics...............................................................................................................49

5.3 ROUTE...........................................................................................................................................51

5.4 ARP...............................................................................................................................................51

5.5 DHCP............................................................................................................................................52

CHAPTER 6 ADVANCED SETUP..............................................................................................53

6.1 WAN .............................................................................................................................................54

6.2 LAN..............................................................................................................................................55

6.3 NAT ..............................................................................................................................................56

6.3.1 Virtual Servers................................................................................................................56

Port Tr igger ing...............................................................................................................58

6.3.2

6.3.3 DMZ Host.......................................................................................................................59

6.3.4 ALG.................................................................................................................................60

6.4 SECURITY ......................................................................................................................................61

6.4.1 MAC Filtering.................................................................................................................61

6.4.2 IP Filtering.....................................................................................................................63

6.4.3 Parental Control.............................................................................................................66

6.5 QUALITY OF SERVICE ....................................................................................................................67

6.5.1 Queue Management Configuration ................................................................................67

6.5.2 QoS Queue Configuration..............................................................................................67

6.6 ROUTING .......................................................................................................................................70

6.6.1 Default Gateway.............................................................................................................70

6.6.2 Static Route.....................................................................................................................71

6.6.3 RIP..................................................................................................................................72

6.7 DNS..............................................................................................................................................73

6.7.1 DNS Server.....................................................................................................................73

6.7.2 Dynamic DNS.................................................................................................................73

6.8 DSL / SLAVE DSL..........................................................................................................................75

6.9 PRINT SERVER ...............................................................................................................................77

6.10 PORT MAPPING ............................................................................................................................78

6.11 IPSEC ..........................................................................................................................................80

6.12 CERTIFICATE................................................................................................................................82

6.12.1 Local...............................................................................................................................82

6.12.2 Trusted CA......................................................................................................................84

CHAPTER 7 WIRELESS .............................................................................................................86

7.1 BASIC ............................................................................................................................................ 86

7.2 SECURITY ......................................................................................................................................89

7.3 MAC FILTER .................................................................................................................................92

7.4 WIRELESS BRIDGE.........................................................................................................................94

7.5 ADVANCED ....................................................................................................................................94

7.6 STATION INFO ................................................................................................................................98

CHAPTER 8 DIAGNOSTICS......................................................................................................99

CHAPTER 9 MANAGEMENT..................................................................................................101

9.1 SETTINGS.....................................................................................................................................101

9.1.1 Backup..........................................................................................................................101

9.1.2 Update Settings.............................................................................................................102

9.1.3 Restore Default.............................................................................................................103

SYSTEM LOG ...............................................................................................................................104

9.2

9.3 SNMP AGENT .............................................................................................................................106

9.4 TR-069 CLIENT ...........................................................................................................................107

9.5 INTERNET TIME ...........................................................................................................................108

9.6 ACCESS CONTROL ....................................................................................................................... 109

9.6.1 Services.........................................................................................................................109

9.6.2 IP Addres s es................................................................................................................. 110

9.6.3 Passwords..................................................................................................................... 111

9.7 UPDATE SOFTWARE .....................................................................................................................112

9.8 SAVE AND REBOOT ......................................................................................................................113

APPENDIX A: PRINTER SERVER.................................................................................................114

APPENDIX B: FIREWA LL ..............................................................................................................120

APPENDIX C: PIN ASSIGNMENTS...............................................................................................126

APPENDIX D: SPECIFICATIONS..................................................................................................127

APPENDIX E: SSH CLIENT............................................................................................................129

Chapter 1 Introduction

The NexusLink 5631 Wireless ADSL2+ Bonded Router features flexible networking

connectivity with dual ADSL line capability, four 10/100 Ethernet ports, two USB

ports and an 802.11g wireless LAN access point. It has robust routing capabilities

to segment and direct data streams and allows for multiple data encapsulations.

The NexusLink 5631 is a black box solution for deploying Triple Play architectures,

doubling bandwidth (48Mbps) performance over traditional ADSL2+ modems. It

provides higher level performance with embedded security, QoS, VPN and remote

management functions. As an added bonus, the USB host acts as a printer hub and

will enable future product enhancements available by software upgrade.

1.1 Features

• Dual ADSL2+ bonded

• UPnP installation

• Integrated 802.11g (WiFi) Access Point

• WPA and 802.1x

• RADIUS client

• IP /MAC address filtering

• Static route/RIP/RIP v2 routing functions

• Dynamic IP assignment

• NAT/PAT

• IGMP Proxy and fast leave

• DHCP Server/Relay/Client

• DNS Relay

• Auto PVC configuration

• Supports 16 VCs

• Embedded SNMP agent

• Web-based management

• Remote configuration and upgrade

• Supports TR-069/TR-098/TR-111 For Remote Management

• Configuration backup and restoration

• FTP server

• TFTP server

1.2 Application

This diagram depicts the application of the NexusLink 5631 on a wireless network.

1.3 Front Panel LED Indicators

The front panel LED indicators are pictured below with detailed explanation provided

in the table underneath.

LED Color Mode Function

Green On The router is powered up. POWER

Off The router is powered down.

Green On An Ethernet Link is established.

LAN 1~4

WIRELESS

ADSL 1~2

USB

Off An Ethernet Link is not established.

Green Blink Data transmitting or receiving over LAN.

Green On A USB link is established.

Off A USB link is not established.

Green Blink Data transmitting or receiving over USB.

Green On The Wireless is ready and idle.

Off The Wireless is not installed.

Green Blink

Green On

Off

Data transmitting or receiving over Wireless

The ADSL link is established.

The ADSL link is not established.

Chapter 2 Installation

2.1 Hardware Installation

Follow the instructions below to complete the hardware installation.

A diagram of the back panel of the router is shown below for reference.

Connection to Power

Connect the power jack to the shipped power cord. Attach the power adapter to

the wall outlet or other AC source. After all connections have been made, press the

power button to turn on the device. After powering on, the router will perform a

self-test. Wait a few moments and the device will be ready to operate.

Host

Reset button

Power button

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

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

If the problem persists, contact technical support.

Caution 2: Before servicing or disassembling this equipment always disconnect

all power cords and telephone lines from the wall outlet.

Reset Button

In the rear panel, there is a reset button. To load the factory default settings, hold

the reset button down for 5 to 10 seconds.

Connection to USB port

Connect the USB port to a PC with a standard USB cable.

Connection to USB host port

This device is equipped with one high-speed USB 2.0 host connection. With

software support, users can connect USB devices such as printers and a hard disc to

the router. For this software release, printer service is supported.

Connection to LAN port

To connect to a hub or PC, use a RJ45 cable. You can connect the router to four LAN

devices. The ports are auto-sensing MDI/X and either straight-through cable or

crossover cable can be used.

Connection to LINE port

If you wish to connect both the router and a telephone, connect the LINE port to a

POTS splitter with a RJ14 cable.

2.2 USB Driver Autorun Installation

Before connecting the NexusLink 5631 to a PC with USB, the correct drivers must be

installed. The auto-run USB driver installation supports Win ME, Win 98, Win 2000,

Win XP (32 bit) and Vista (32 bit). For those using Windows XP 64 bit, the driver

must be installed manually (please see section 2.3 below for details).

Follow the procedure below to install the standard (32 bit) USB driver

STEP 1: Insert the Installation CD and select Install USB Driver from the

autostart menu options shown below.

STEP 2: The following window will be displayed. Click the Next button to continue.

STEP 3: When the window displays as below, wait for the drivers to fully install.

STEP 4: Click the Finish button, when the window displays as below.

STEP 5: The installation is complete. You can now connect the device to your PC

using a standard USB cable.

2.3 USB Driver Manual Installation (64bit OS)

Before connecting this router to a PC with USB, the correct drivers must be installed.

Follow the procedure below to manually install the 64bit USB driver

STEP 1: Connect the USB port to the PC by plugging the flat connector of a

standard USB cable into your PC and plugging the square connector into

the device. After a moment, the connection should be detected by your

PC and if so the screen will display a notice to that effect, as shown below:

STEP 2: When the window displays as below, select Install from a list or

specific location (Advanced) and then click the Next button.

Note: This window won’t display if the USB Driver has been previously installed.

In this case, contact technical support for assistance.

STEP 3: Insert the installation CD.

Note: If you see the autostart menu (as shown in step 1 of previous section)

CLICK -

and continue with the manual installation process.

STEP 4: Select the location of the file using the Browse button, as shown above.

Normally, the file is on the CD-ROM shipped with the device.

STEP 5: Locate the Vista folder, and click OK.

STEP 6: When the window displays as below, click the NEXT button and wait.

STEP 7: Click the Finish button when the window displays as below.

STEP 8: Installation is complete.

Chapter 3 Web User Interface

This section describes how to manage the router via a web browser. The web page

is best viewed with Microsoft Internet Explorer 5.0 and later. A unique default user

account is assigned with user name root and password 12345. The user can

change the default password later when logged in to the device.

3.1 TCP/IP Settings

The default IP address of the router (LAN port) is 192.168.1.1. To configure the

router for the first time, the configuration PC must have a static IP address within

the 192.168.1.x subnet. Follow the steps below to configure your PC IP address to

use subnet 192.168.1.x.

STEP 1: Right click on the Local Area Connection under the Network and Dial-Up

connection window and select Properties.

STEP 2: Enter the TCP/IP window and change the IP address to 192.168.1.x/24.

STEP 3: Click OK to submit settings.

3.2 Login Procedure

Perform the following steps to bring up the web browser and configure the router.

STEP 1: Start the Internet browser. Type the IP address for the router in the Web

address field. For example, if the IP address is 192.168.1.1, type

http://192.168.1.1

STEP 2: You will be prompted to enter your user name and password. Type root

for the user name and 12345 as the password, then click OK. These

values can be changed later (see section 9.6.3 Passwords).

STEP 3: After successfully logging in, you will reach the Quick Setup menu.

3.3 Default Settings

During power on initialization, the router sets all configuration attributes to default

values. It will then read the configuration profile from flash memory. The default

attributes are overwritten when identical attributes with different values are

configured. The configuration profile can be created via the web browser, telnet

user interface or other management protocols. The factory default configuration

can be restored either by resetting the device or selecting the Restore Default option

in Management Æ Settings (see section 9.1.3 Restore Default).

The following list shows the factory default settings for this router.

• LAN port IP address(es): 192.168.1.1 (ADSL1) and 192.168.1.2 (ADSL2)

• Local administrator account name: root

• Local administrator account password: 12345

• Local non-administrator account name: user

• Local non-administrator account password: user

• Remote WAN access: disabled

• Remote WAN access account name: support

• Remote WAN access account password: support

• NAT and firewall: Disabled for MER, IPoA and Bridge modes

Enabled for PPPoE and PPPoA modes

• DHCP server on LAN interface: enabled

• WAN IP address: none

• Wireless access: enabled

• SSID: Comtrend

• Wireless authentication: open (no authentication)

• Annex M enabled (all other modes disabled)

Chapter 4 Quick Setup

After login, the Quick Setup screen will appear as shown.

NOTE: The selections available on the main menu are based upon the configured

connection type and user account privileges.

The Quick Setup screen allows the user to configure the NexusLink 5631 for ADSL

connectivity and Internet access. It also guides the user though the WAN network

setup first and then the LAN interface setup. You can either do this manually or

follow the auto quick setup (i.e. DSL Auto-connect) instructions.

This router supports the following data encapsulation methods.

• PPP over Ethernet (PPPoE)

• PPP over ATM (PPPoA)

• MAC Encapsulated Routing (MER)

• IP over ATM (IPoA)

• Bridging

The following configuration considerations apply:

• The WAN network operating mode operation depends on the service provider’s

configuration in the Central Office and Broadband Access Server for the PVC

• If the service provider provides PPPoE service, then the connection selection

depends on whether the LAN-side device (typically a PC) is running a PPPoE

client or whether the router is to run the PPPoE client. The router can support

both cases simultaneously.

• If some or none of the LAN-side devices do not run PPPoE client, then select

PPPoE. If every LAN-side device is running a PPPoE client, then select Bridge In

PPPoE mode, the device also supports pass-through PPPoE sessions from the

LAN side while simultaneously running a PPPoE client from non-PPPoE LAN

devices. In most cases, NAT and firewall should always be enabled when PPPoE

or PPPoA mode are selected, but they can be enabled or disabled by the user

when MER or IPoA is selected, NAT and firewall are always disabled when Bridge

mode is selected.

• Depending on the network operating mode, and whether NAPT and firewall are

enabled or disabled, the main panel will display or hide the NAPT/Firewall menu.

For instance, at initial setup, the default network operating mode is Bridge. The

main panel will not show the NAPT and Firewall menu.

NOTE: Up to sixteen PVC profiles can be configured and saved on the flash

memory. To activate a particular PVC profile, you need to navigate all the

Quick Setup pages until the last summary page, then click on the Finish

button and reboot the system.

4.1 Auto Quick Setup

The auto quick setup requires the ADSL link to be up. The ADSL router will

automatically detect the PVC, so just follow the easy online instructions.

STEP 1: Select Quick Setup to display this screen.

STEP 2: Click Next to start the setup process. Follow the online instructions to

complete the settings. This procedure will skip some processes such as

the PVC index and encapsulation mode selection.

STEP 3: After the settings are complete, you can use the ADSL service.

4.2 Manual Quick Setup

STEP 1: Click Quick Setup and un-tick the DSL Auto-connect checkbox to

enable manual configuration of the connection type.

Untick this checkbox to enable manual setup and display

the following screen.

STEP 2: Enter the PORT, Virtual Path Identifier (VPI) and Virtual Channel Identifier

(VCI) values. Select Enable Quality Of Service if required and click Next.

STEP 3: Choose an Encapsulation mode.

Choosing different connection types provides different encapsulation modes.

• PPPoA- VC/MUX, LLC/ENCAPSULATION

• PPPoE- LLC/SNAP BRIDGING, VC/MUX

• MER- LLC/SNAP-BRIDGING, VC/MUX

• IPoA- LLC/SNAP-ROUTING, VC MUX

• Bridging- LLC/SNAP-BRIDGING, VC/MUX

NOTE: Subsections 4.2.1 - 4.2.4 describe the PVC setup procedure further.

Choosing different connection types pops up different settings requests.

Enter appropriate settings that are required by your service provider.

4.2.1 PPP over ATM (PPPoA) and PPP over Ethernet (PPPoE)

STEP 4: Select the PPP over ATM (PPPoA) or PPP over Ethernet (PPPoE) radio

button and click Next. The following screen appears.

Enable Fullcone NAT

Known as one-to-one NAT, all requests from the same internal IP address and

port are mapped to the same external IP address and port. An external host can

send a packet to the internal host, by sending a packet to the mapped external

address.

PPP Username/PPP Password

The PPP Username and the PPP password requirement are dependent on the

particular requirements of the ISP or the ADSL service provider. The WEB user

interface allows a maximum of 256 characters in the PPP user name and a maximum

of 32 characters in PPP password.

Disconnect if no activity

The router can be configured to disconnect if there is no activity for a period of time

by selecting the Dial on demand check box. When the checkbox is ticked, you need

to enter the inactivity timeout period. The timeout period ranges from 1 minute to

4320 minutes.

PPP IP Extension

The PPP IP Extension is a special feature deployed by some service providers.

Unless your service provider specially requires this setup, do not select it.

The PPP IP Extension supports the following conditions:

• Allows only one PC on the LAN

• The public IP address assigned by the remote side using the PPP/IPCP protocol

is actually not used on the WAN PPP interface. Instead, it is forwarded to the PC

LAN interface through DHCP. Only one PC on the LAN can be connected to the

remote, since the DHCP server within the ADSL router has a single IP address to

assign to a LAN device.

• NAPT and firewall are disabled when this option is selected.

• The ADSL router becomes the default gateway and DNS server to the PC through

DHCP using the LAN interface IP address.

• The ADSL router extends the IP subnet at the remote service provider to the LAN

PC. That is, the PC becomes a host belonging to the same IP subnet.

• The ADSL router bridges the IP packets between WAN and LAN ports, unless the

packet is addressed to the router’s LAN IP address.

Use Static IP Address

Unless your service provider specially requires this setup, do not select it.

If selected, enter your static IP address.

Retry PPP password on authentication error

Tick the box to select.

Enable PPP Debug Mode

Enable the PPPoE debug mode. The system will put more PPP connection

information in System Log. This is used for debugging purposes.

Bridge PPPoE Frames Between WAN and Local Ports (Default Enabled)

If Enabled, the function can create a local PPPoE connection to the WAN side.

STEP 5: Click Next to display the following screen.

Enable IGMP Multicast checkbox:

Tick the checkbox to enable IGMP multicast (proxy). IGMP (Internet Group

Membership Protocol) is a protocol used by IP hosts to report their multicast group

memberships to any immediately neighboring multicast routers.

Enable WAN Service checkbox:

Tick this item to enable the ATM service. Untick it to stop the ATM service.

Service Name:

This is user-defined.

STEP 6: After entering your settings, select Next. The following screen appears.

This screen allows the user to configure the LAN interface IP address, subnet mask

and DHCP server. To assign dynamic IP address, DNS server and default gateway

to other LAN devices, select the button Enable DHCP server on the LAN and enter

the start and end IP addresses and DHCP leased time.

Since the router occupies the first two IP addresses (192.168.1.1 and 192.168.1.2),

the default private address range provided by the ISP server in the router is

192.168.1.3 through 192.168.1.254.

To configure a secondary IP address for the LAN port, click the checkbox, as shown.

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