Comtrend Corporation CT-536+ User manual

CT-536+
4-Port Wireless
ADSL2+ Router
User’s Manual
Version A1.7, October 27, 2006
261056-024

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 ADSL 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© 2006 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]
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Table of Contents
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 INSTALLING THE USB DRIVER ..................................................................................................9
CHAPTER 3 LOGIN VIA THE WEB BROWSER ......................................................................14
3.1 IP ADDRESS.............................................................................................................................14
3.2 LOGIN PROCEDURE .................................................................................................................15
3.3 DEFAULT SETTINGS .................................................................................................................16
CHAPTER 4 QUICK SETUP.........................................................................................................17
4.1 WAN .......................................................................................................................................18
4.2 STATISTICS ..............................................................................................................................19
4.2.1 LAN Statistics..................................................................................................................20
4.2.2 WAN Statistics.................................................................................................................21
4.2.3 ATM statistics .................................................................................................................22
4.2.4 ADSL Statistics ...............................................................................................................24
4.2.5 Route...............................................................................................................................26
4.2.6 ARP.................................................................................................................................26
4.2.7 DHCP .............................................................................................................................27
CHAPTER 5 QUICK SETUP.........................................................................................................28
5.1 AUTO QUICK SETUP ................................................................................................................29
5.2 MANUAL QUICK SETUP ...........................................................................................................30
5.2.1 PPP over ATM (PPPoA) and PPP over Ethernet (PPPoE)............................................32
5.2.2 MAC Encapsulation Routing (MER) ..............................................................................37
5.2.3 IP Over ATM...................................................................................................................41
5.2.4 Bridging..........................................................................................................................45
CHAPTER 6 ADVANCED SETUP ................................................................................................ 47
6.1 WAN .......................................................................................................................................48
6.2 LAN........................................................................................................................................49
6.3 NAT ........................................................................................................................................50

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6.3.1 Virtual Servers ................................................................................................................50
6.3.2 Port Triggering ...............................................................................................................52
6.3.3 DMZ Host .......................................................................................................................53
6.3.4 ALG ................................................................................................................................54
6.4 SECURITY ................................................................................................................................55
6.4.1 IP Filtering .....................................................................................................................55
6.4.2 Parental Control .............................................................................................................58
6.5 QUALITY OF SERVICE ..............................................................................................................59
6.6 ROUTING .................................................................................................................................62
6.6.1 Default Gateway .............................................................................................................62
6.6.2 Static Route.....................................................................................................................63
6.6.3 RIP..................................................................................................................................64
6.7 DNS ........................................................................................................................................65
6.7.1 DNS Server .....................................................................................................................65
6.7.2 Dynamic DNS .................................................................................................................66
6.8 DSL ........................................................................................................................................68
6.9 PORT MAPPING ........................................................................................................................69
CHAPTER 7 WIRELESS ...............................................................................................................71
7.1 WIRELESS BASIC SCREEN........................................................................................................71
7.1.1 Security ...........................................................................................................................73
7.1.2 MAC Filter......................................................................................................................76
7.1.3 Wireless Bridge...............................................................................................................78
7.1.4 Advanced ........................................................................................................................79
7.1.5 Station Info .....................................................................................................................82
CHAPTER 8 DIAGNOSTICS ........................................................................................................83
CHAPTER 9 MANAGEMENT ......................................................................................................85
9.1 SETTINGS ................................................................................................................................85
9.1.1 Configuration Backup.....................................................................................................86
9.1.2 Tools – Update Settings ..................................................................................................87
9.1.3 Restore Default ...............................................................................................................88
9.2 SYSTEM LOG ...........................................................................................................................90
9.3 SNMP AGENT .........................................................................................................................92
9.4 INTERNET TIME .......................................................................................................................93
9.5 ACCESS CONTROL ...................................................................................................................94
9.5.1 Services...........................................................................................................................95
9.5.2 Access IP Addresses........................................................................................................96
9.5.3 Passwords.......................................................................................................................97

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9.6 UPDATE SOFTWARE..................................................................................................................98
9.7 SAVE AND REBOOT ..................................................................................................................99
APPENDIX A: FIREWALL ..............................................................................................................100
APPENDIX B: PIN ASSIGNMENTS...............................................................................................106
APPENDIX C: SPECIFICATIONS..................................................................................................107
APPENDIX D: SSH CLIENT ...........................................................................................................109

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Chapter 1 Introduction
The CT-536+ is an 802.11g (54Mbps) wireless and wired Local Area Network (WLAN)
ADSL router. Four 10/100 Base-T Ethernet ports provide wired LAN connectivity with
an integrated 802.11g WiFi WLAN Access Point (AP) for wireless connectivity. The
CT-536+ ADSL router provides state of the art security features such as WPA data
encryption Firewall, VPN pass through. The CT-536+ is designed for both
residential and business applications that require wireless and wired connectivity to
an ADSL broadband network. The CT-536+ supports up to 8 contiguous virtual
connections allowing for multiple simultaneous Internet connections.
1.1 Features
 UPnP
 Integrated 802.11g AP
 Backward compatible with 802.11b
 RADIUS client
 WPA and 802.1x
 Up to 125Mbps for wireless (Afterburner mode)
 Wireless QoS (WMM)
 IP/MAC address filtering
 Static route/RIP/RIP v2 routing functions
 Dynamic IP assignment
 IP/Bridge QoS
 NAT/PAT
 IGMP Proxy
 DHCP Server/Relay/Client
 DNS Proxy
 Auto PVC configuration
 Per-VC packet level QoS
 Up to 16 VCs
 Embedded SNMP agent
 Web-based management
 Remote configuration and upgrade
 Configuration backup and restoration
 FTP server
 TFTP server
 IGMP Snooping
 802.1q/802.1p

1.2 Application
The following diagram depicts the application of the CT-536+ on a wireless network.
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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
1x~4x
Green Blink Data transmitting or receiving over LAN.
Green On The wireless module is ready and idle.
Off The wireless module is not installed.
WLAN
Green Blink Data transmitting or receiving over WLAN.
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 or some traffic is passing
through ADSL.
Red On The ADSL link is terminated.
ALARM
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.
Reset button
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 Console port
(Optional) In order to manage your device through the console port you will need to
use a straight-through cable with an RJ-45 connector to attach to the modem, and
a female RS-232 connector to connect to the serial port on a PC. The PC must be
equipped with a VT-100 emulation program, such as HyperTerminal 5 or Telix. The
Console session parameters are Baud rate 115200 bps; Data bits 8; Parity none
Stop bit 1; Flow control none.
Please see Appendix B for the console cable Pin Assignment.
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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, turn the power-switch to the on position.
After power 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.
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.
2.2 Installing the USB Driver
Before you connect your router’s USB cable to your PC, you must load the ADSL USB
drivers. The USB driver supports Windows 98, ME, 2000, and XP.
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, click the Next button.
Note: This screen won’t be displayed if the USB Driver has been previously
un/installed.
STEP 3: When the screen displays as below, select Search for a suitable driver
and click the Next button.
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STEP 4: Select Specify a location and click the Next button. If you are installing the
software from a disk, insert the disk.
STEP 5: Select the location of the file using the Browse button. Normally, the file
is on the CD-ROM shipped with the device.
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STEP 6: Locate the file, and click the Open button.
STEP 7: When the screen displays as below, click the OK button.
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STEP 8: When the screen below displays, click the NEXT button.
STEP 9: Click the Finish button, when the screen displays as below.
STEP 10: 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-536+ (LAN port) is 192.168.1.1. To configure the
CT-536+ 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.
STEP 4: Start your Internet browser and type the IP address for the router
(192.168.1.1) in the Web address bar.
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3.2 Login Procedure
Perform the following steps to bring up the Web user interface and configure the
CT-536+. 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 screen.
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3.3 Default Settings
During power on initialization, the CT-536+ initializes all configuration attributes to
default values. It will then read the configuration profile from the Permanent
Storage section on the 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, the console, 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.
 LAN port IP address: 192.168.1.1
 Console port: 115200 bps
 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: root
 Remote WAN access account password: 12345
 NAT and firewall: disabled
 DHCP server on LAN interface: enable
 WAN IP address: none

Chapter 4 Quick Setup
After login, the Quick Setup screen appears as shown.
Note: The selections available on the left side of menu are based upon the
configured connection.
If you configure a PVC and Click Save/Reboot, the Device Info screen will be
displayed.
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4.1 WAN
Click Device Info on the menu bar to display the WAN option. Then, click WAN on
the Device Info menu bar to display the configured PVC(s) and the status.
VPI/VCI Shows the values of the ATM VPI/VCI
Con. ID Shows the connection ID
Category Shows the ATM service classes
Service Shows the name for WAN connection
Interface Shows connection interfaces
Protocol Shows the connection type, such as PPPoE, PPPoA, etc.
IGMP Shows the state of the IGMP function
State Shows the connection state of the WAN connection
Status Lists the status of DSL link
IP Address Shows IP address for WAN interface
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4.2 Statistics
Selection of the Statistics screen provides statistics for the Network Interface of LAN,
WAN, ATM and ADSL. All statistics screens are updated every 15 seconds.
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