Comtrend Corporation CT-5621 User manual

CT-5621
ADSL2+ Multi-Port Router
User’s Manual
Version A1.7, November 9, 2007
261055-016

Warning
Before servicing or disassembling this equipment, always disconnect all
power and telephone lines from the device.

Use an appropriate power supply and a UL Listed telephone line cord.
Specification of the power supply is clearly stated in Appendix C -
Specifications.
Preface
This manual provides information to network administrators. It covers the
installation, operation and applications of the ADSL2+ router.
The reader reading this manual is presumed to have a basic understanding of
telecommunications. For product update, new product release, manual revision,
software upgrade, technical support, etc., visit Comtrend Corporation at
http://www.comtrend.com
This document is subject to change without notice.
Copyright
Copyright© 2007 Comtrend Corporation. All rights reserved. The information and
messages contained herein are proprietary to Comtrend Corporation. No part of
this document may be translated, transcribed, reproduced, in any form, or by any
means without prior written permission by Comtrend Corporation.
Technical support
When you find the product out of service, or that it doesn’t work properly, please
contact technical support engineer for immediate servicing or email to
[email protected]

Table of Contents
CHAPTER 1 INTRODUCTION......................................................................................................4
1.1 FEATURES..................................................................................................................................4
1.2 APPLICATION.............................................................................................................................5
1.3 FRONT PANEL LED INDICATORS................................................................................................6
CHAPTER 2 INSTALLATION........................................................................................................7
2.1 HARDWARE INSTALLATION........................................................................................................7
2.2 USB DEVICE DRIVER AUTO-RUN INSTALLATION ......................................................................8
2.3 USB DRIVER MANUAL INSTALLATION(64BIT OS)...................................................................11
CHAPTER 3 LOGIN VIATHE WEB BROWSER......................................................................16
3.1 IPADDRESS.............................................................................................................................16
3.2 LOGIN PROCEDURE .................................................................................................................17
3.3 DEFAULT SETTINGS .................................................................................................................18
CHAPTER 4 DEVICE INFO..........................................................................................................19
4.1 WAN.......................................................................................................................................20
4.2 STATISTICS ..............................................................................................................................21
4.2.1 LAN Statistics..................................................................................................................22
4.2.2 WAN Statistics.................................................................................................................23
4.2.3 ATM statistics .................................................................................................................24
4.2.4 ADSL Statistics ...............................................................................................................26
4.2.5 Route...............................................................................................................................28
4.2.6 ARP.................................................................................................................................28
4.2.7 DHCP.............................................................................................................................29
CHAPTER 5 QUICK SETUP.........................................................................................................30
5.1 AUTO QUICK SETUP ................................................................................................................31
5.2 MANUAL QUICK SETUP ...........................................................................................................32
5.2.1 PPP over ATM (PPPoA) and PPP over Ethernet (PPPoE)............................................34
5.2.2 MAC Encapsulation Routing (MER) ..............................................................................39
5.2.3 IP Over ATM...................................................................................................................43
5.2.4 Bridging..........................................................................................................................47
CHAPTER 6 ADVANCED SETUP................................................................................................49
6.1 WAN.......................................................................................................................................51
6.2 LAN........................................................................................................................................52
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6.3 NAT........................................................................................................................................53
6.3.1 Virtual Servers................................................................................................................53
6.3.2 Port Triggering...............................................................................................................55
6.3.3 DMZ Host.......................................................................................................................57
6.3.4 ALG ................................................................................................................................58
6.4 SECURITY................................................................................................................................59
6.4.1 IP Filtering.....................................................................................................................59
6.4.2 Parental Control.............................................................................................................62
6.4.3 MAC Filtering.................................................................................................................63
6.5 QUALITY OF SERVICE ..............................................................................................................65
6.6 ROUTING .................................................................................................................................67
6.6.1 Default Gateway.............................................................................................................67
6.6.2 Static Route.....................................................................................................................68
6.6.3 RIP..................................................................................................................................69
6.7 DNS........................................................................................................................................70
6.7.1 DNS Server.....................................................................................................................70
6.7.2 Dynamic DNS.................................................................................................................71
6.8 DSL ........................................................................................................................................73
6.9 PORT MAPPING........................................................................................................................74
CHAPTER 7 DIAGNOSTICS........................................................................................................75
CHAPTER 8 MANAGEMENT......................................................................................................78
8.1 SETTINGS ................................................................................................................................78
8.1.1 Configuration Backup.....................................................................................................79
8.1.2 Tools – Update Settings ..................................................................................................80
8.1.3 Restore Default...............................................................................................................81
8.2 SYSTEM LOG ...........................................................................................................................83
8.3 SNMPAGENT .........................................................................................................................85
8.4 INTERNET TIME .......................................................................................................................86
8.5 ACCESS CONTROL...................................................................................................................87
8.5.1 Services...........................................................................................................................88
8.5.2 Access IP Addresses........................................................................................................89
8.5.3 Passwords.......................................................................................................................90
8.6 UPDATE SOFTWARE..................................................................................................................91
8.7 SAVE AND REBOOT ..................................................................................................................92
APPENDIX A: FIREWALL................................................................................................................93
APPENDIX B: PINASSIGNMENTS.................................................................................................99
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APPENDIX C: SPECIFICATIONS..................................................................................................100
APPENDIX D: SSH CLIENT ...........................................................................................................102
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Chapter 1 Introduction
The CT-5621 is a wired Local Area Network ADSL2+ multi-port router. Four 10/100
Base-T Ethernet ports provide wired LAN. The CT-5621 ADSL2+ multi-port router
provides state of the art security features such as Firewall and VPN pass through.
The CT-5621 is designed for both residential and business applications that require
wired connectivity to an ADSL broadband network. The CT-5621 supports up to 16
contiguous virtual connections allowing for multiple simultaneous Internet
connections.
1.1 Features
zUPnP
zIP/MAC address filtering
zStatic route/RIP/RIP v2 routing functions
zDynamic IP assignment
zIP/Bridge QoS
zNAT/PAT
zIGMP Proxy
zDHCP Server/Relay/Client
zDNS Proxy
zAuto PVC configuration
zPer-VC packet level QoS
zUp to 16 PVCs
zEmbedded SNMP agent
zWeb-based management
zRemote configuration and upgrade
zConfiguration backup and restoration
zFTP/TFTP server
zIGMP Snooping
z802.1q/802.1p
zAnnex M
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1.2 Application
The following diagram depicts the application of the CT-5621.
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1.3 Front Panel LED Indicators
The front panel LEDs are shown in the picture below, followed by an explanation in
the table below.
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.
Off An Ethernet Link is not established.
LAN
4x~1x
Green Blink
Data transmitting or receiving over LAN.
Green
On A USB link is established
Off A USB link is not established
USB
Green Blink Data transmitting or receiving over USB.
Green On The ADSL link is established.
Off The ADSL link is not established.
ADSL
Green Blink
The ADSL link is training.
On The ADSL link is terminated.ALARM Red
Off Normal operating status.
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Chapter 2 Installation
2.1 Hardware Installation
In the rear panel, there is a reset button. To load the factory default settings, hold
the reset button down for at least 5 seconds.
Follow the instructions below to complete the hardware connections.
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 RJ11 connection cable.
Connection to LAN port
To connect to a hub or PC, use a RJ45 cable. You can connect the router to up to four
LAN devices. The ports are auto-sensing MDI/X and either straight-through cable
or crossover cable can be used.
Connection to USB port
Connect the USB port to a PC with a standard USB cable.
Connection to (PWR) 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 the on position. 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.
Reset button
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.
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2.2 USB Device Driver Auto-run Installation
Before you connect your router’s USB cable to your PC, you must load the ADSL USB
drivers. 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
needs to be installed manually (please see section 2.3 below for details), and the
driver is also enclosed on the CD-ROM.
To connect the router to a PC using the USB interface, you need to use a standard
USB cable and install the USB interface software. Follow the steps below:
STEP 1: Insert the Installation disk and select the Install USB Driver option.
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STEP 2: The following screen will be displayed. Click the Next button to continue.
STEP 3: When the screen displays as below, wait until the drivers are fully installed.
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STEP 4: Click the Finish button, when the screen displays as below.
STEP 5: Installation is complete.
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2.3 USB Driver Manual Installation(64bit OS)
Before you connect your router’s USB cable to your PC, you must load the ADSL USB
drivers. This manual USB driver installation supports Windows XP 64 bit.
To connect the router to a PC using the USB interface, you need to use a standard
USB cable and install the USB interface software. Follow the steps below:
STEP 1: Connect the USB router to the PC by plugging the flat connector of a
standard USB cable into your PC, and plugging the square connector into
the router. The screen will display as below:
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STEP 2: When the screen displays as below, select install from a list of specific
location (Advanced) and click the Next button.
Note: This screen won’t be displayed if the USB Driver has been previously
un/installed.
STEP 3: If you are installing the software from a disk, insert the disk.
Note: When the auto-run screen pops up click Exit and continue with the manual
installation process (see below).
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STEP 4: Select the location of the file using the Browse button. Normally, the file
is on the CD-ROM shipped with the device.
STEP 5: Locate the Vista folder, and click the OK button.
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STEP 6: When the screen displays as below, click the NEXT button.
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STEP 7: Click the Finish button, when the screen displays as below.
STEP 8: Installation is complete.
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Chapter 3 Login via the Web Browser
This section describes how to manage the router via a Web browser via the remote
end. You can use a web browser such as Microsoft Internet Explorer, or Netscape
Navigator. (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 IP Address
The default IP address of the CT-5621 (LAN port) is 192.168.1.1 and the default
private address range provided by the ISP server in the router is 192.168.1.2
-192.168.1.254. To configure the CT-5621 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 screen and change the IP address to the domain of
192.168.1.x/24.
STEP 3: Click OK to submit the settings.
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STEP 4: Start your Internet browser and enter the IP address for the router
(i.e. 192.168.1.1) in the Web address bar.
3.2 Login Procedure
Perform the following steps to bring up the Web user interface and configure the
CT-5621. To log on to the system from the Web browser, follow the steps below:
STEP 1: Start your 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 in
the user name and 12345 in the password field, and click OK. These
values can be changed later in the Web User Interface by selecting the
Management link.
STEP 3: After successfully logging in, you will reach the Quick Setup menu.
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3.3 Default Settings
During power on initialization, the CT-5621 initializes all configuration attributes to
default values. It will then read the configuration profile from the Permanent
Storage section in flash memory. The default attributes are overridden when
identical attributes with different values are configured. The configuration profile
in Permanent Storage can be created via the Web user interface or telnet user
interface, or other management protocols. The factory default configuration can be
restored either by pushing the reset button for more than five seconds, or by
clicking the Restore Default Configuration option in the Restore Settings screen.
The following default settings are present when setting up the router for the first
time. The PC running the browser can be attached by Ethernet or USB.
zLAN port IP address: 192.168.1.1
zConsole port: 115200 bps
zLocal administrator account name: root
zLocal administrator account password: 12345
zLocal non- administrator account name: user
zLocal non- administrator account password: user
zRemote WAN access: disabled
zRemote WAN HTTP/FTP access (user=support, pass=support)
zRemote WAN HTTP/Telnet access (user=root, pass=12345)
zNAT and firewall: Enabled by default for PPPoE and PPPoA
Disabled by default for IPoA, MER and Bridging
zDHCP server on LAN interface: enabled for IPoA, MER, PPPoE, and PPPoA PVCs
zWAN IP address: none
zAnnex M: enabled
zSNMP: enabled
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