Comtrend Corporation CT-535 User manual

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CT-535
Wireless ADSL Router
User’s Manual
Version A1.1, May 22, 2003
261035-009

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Preface
It is designed to provide information to network administrators. It covers the
installation, operation and applications of the Wireless ADSL Router
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 stated in Appendix A -
Specifications.

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T
TA AB BL LE E O OF F C CO ON NT TE EN NT TS S
CHAPTER 1 INTRODUCTION............................................................1
1.1 Overview............................................................................................ 1
1.2 Features.............................................................................................. 2
1.3 Application......................................................................................... 3
1.4 Front Panel LED Indicators ............................................................... 4
CHAPTER 2 INSTALLATION .............................................................5
2.1 Preparing for Hardware Installation................................................... 5
2.2 Hardware Installation......................................................................... 6
CHAPTER 3 LOGIN VIA THE WEB BROWSER ....................................9
3.1 IP Address.......................................................................................... 9
3.2 Login Procedure............................................................................... 10
CHAPTER 4 WEB BASIC CONFIGURATION......................................11
4.1 Version Information......................................................................... 11
4.2 Change the Password....................................................................... 11
4.3 ADSL Link Status............................................................................ 12
4.4 WAN Setup...................................................................................... 13
4.4.1 RFC 1483 Bridged........................................................................... 13
4.4.2 RFC 1483 Routed ............................................................................ 14
4.4.3 PPPoE .............................................................................................. 15
4.4.4 PPPoA.............................................................................................. 17
4.4.5 MER................................................................................................. 18
4.5 LAN IP Address............................................................................... 19
4.6 WLAN Configuration...................................................................... 20
4.6.1 WLAN Basic Parameters................................................................. 21
4.6.2 WLAN Advanced Functions............................................................ 22
4.6.3 WLAN WEP Parameters: ................................................................ 24
4.6.4 Mac Filter......................................................................................... 25
4.7 Routing............................................................................................. 26
4.7.1 Enable RIP....................................................................................... 27
4.7.2 Static route configuration................................................................. 28
4.8 Save.................................................................................................. 30
4.9 Reboot.............................................................................................. 31
4.10 Retrieve default settings................................................................... 32

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CHAPTER 5 WEB ADVANCED CONFIGURATION ..............................33
5.1 ADSL Mode..................................................................................... 33
5.2 VLAN .............................................................................................. 33
5.3 DHCP............................................................................................... 34
5.3.1 Enable DHCP................................................................................... 34
5.3.2 Disable DHCP.................................................................................. 34
5.3.3 Add a DHCP Entry .......................................................................... 35
5.3.4 Disable DHCP.................................................................................. 35
5.4 DHCP Relay..................................................................................... 36
5.4.1 Enable the DHCP Relay................................................................... 36
5.4.2 Disable the BOOTP/DHCP Relay ................................................... 37
5.5 SNMP............................................................................................... 38
5.5.1 Modifying SNMP Parameters.......................................................... 39
5.5.2 Modifying Traps .............................................................................. 40
5.5.3 Modifying Communities.................................................................. 41
5.6 Firewall............................................................................................ 42
5.6.1 Enable/Disable the Firewall............................................................. 42
5.6.2 View Firewall Actions..................................................................... 43
5.6.3 IP Filtering....................................................................................... 43
5.7 NAT ................................................................................................. 45
5.7.1 Static NAT Mapping........................................................................ 45
5.7.2 Static Port Mapping ......................................................................... 46
5.8 Configure ......................................................................................... 47
5.8.1 Configure Interface.......................................................................... 48
5.8.2 DNS & Default Gateway................................................................. 49
5.8.3 NAT ................................................................................................. 50
5.9 VCC ................................................................................................. 51
5.9.1 List IPoA.......................................................................................... 51
5.9.2 Delete Encapsulation ....................................................................... 52
5.9.3 Add a VCC....................................................................................... 53
5.9.4 Delete a VCC................................................................................... 55
5.9.5 Show VCC quality........................................................................... 55
5.9.6 PPPoE .............................................................................................. 55
5.10 PPPoA.............................................................................................. 56
5.11 IGMP................................................................................................ 56
5.11.1 Add an IGMP entry.......................................................................... 57
5.11.2 Delete an IGMP entry...................................................................... 57
5.12 Bridging ........................................................................................... 58

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5.12.1 Bridge............................................................................................... 58
5.12.2 Spanning tree ................................................................................... 59
5.12.3 View STP Parameters...................................................................... 60
5.12.4 To configure STP parameters .......................................................... 61
5.12.5 Enable/Disable STP ......................................................................... 61
5.13 Filtering............................................................................................ 62
5.13.1 List of filter entries........................................................................... 62
5.13.2 Add a filter entry.............................................................................. 63
5.13.3 Delete a filter entry .......................................................................... 63
5.13.4 Modify a filter entry......................................................................... 63
5.13.5 Flush filter entries ............................................................................ 63
CHAPTER 6 WEB PERFORMANCE MONITORING..............................64
6.1 ADSL Link Status............................................................................ 64
6.2 System Statistics .............................................................................. 65
6.2.1 Interface Statistics............................................................................ 65
6.2.2 TCP-IP ............................................................................................. 66
6.2.3 DHCP-Lease .................................................................................... 66
6.3 ATM statistics.................................................................................. 67
6.3.1 AAL5 ............................................................................................... 67
6.3.2 Encapsulation................................................................................... 67
CHAPTER 7 WEB DIAGNOSTICS.....................................................68
7.1 OAM Loopback............................................................................... 68
7.2 Ping.................................................................................................. 69
CHAPTER 8 FIRMWARE UPGRADE..................................................70
CHAPTER 9 ACCESS BY TELNET .....................................................72
9.1 Setting a Common IP Address......................................................... 72
9.2 Telnet Access................................................................................... 73
CHAPTER 10 CONSOLE MANAGEMENT .............................................74
10.1 Hardware connection ....................................................................... 74
10.2 Access by Console........................................................................... 74
10.3 Console WLAN Guide..................................................................... 76
10.3.1 WLAN Basic Parameters................................................................. 77
10.3.2 WLAN Advanced Functions............................................................ 78
10.3.3 WLAN WEP Parameters: ................................................................ 79
APPENDIX A: SPECIFICATIONS ..........................................................80
APPENDIX B - PIN ASSIGNMENTS ......................................................82

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Chapter 1 Introduction
1.1 Overview
The wireless ADSL router combines cutting-edge wireless technology with
routing/bridge functions. It enables multiple users to share a high speed ADSL
connection, without connecting any wires. To ensure the security of your valuable
data the router employs state-of-the-art security features such as WEP data
encryption, L2TP, and IpSec pass through. To provide maximum immunity from
broadband interference the router incorporates the latest wireless modulation
technology (DSSS). The router is designed for residential and business users who
need wireless access through an ADSL router.
In addition to wireless connectivity, the wireless ADSL router has four 10/100 Base-T
Ethernet ports for LAN connection. It can access the Internet, Corporate LAN, or
Video on Demand over one ordinary telephone line, and establish up to 8 concurrent
virtual-connections to multiple destinations.

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1.2 Features
The Wireless ADSL Router has the following features:
Wireless built-in ADSL router
IEEE 802.11b compliance
11Mbps/5.5Mbps/2Mbps/1Mbps data rates with auto-fallback support
WEP data encryption
Four 10/100 Base-T Ethernet ports for LAN connection
Bridge/Router
AAL5 for ATM over ADSL
UBR/CBR/VBR ATM services
VC-based and LLC multiplexing
Up to 8 VCs
Embedded SNMP agent and RFC MIB II
Web-based management
OAM F4 and F5
Static route/RIP/RIP v2 routing
Dynamic IP assignment and Network Address Translation

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1.3 Application
The following diagram shows a typical application of the router, which can be used
for G.lite and G.DMT applications.
Figure 1-1 Application

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1.4 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
Power Green On
Off The router is powered up The router is powered down.
LAN
1x~4x
Green On
Blink
Off
Ethernet connection is established.
Data transmitting or receiving
Ethernet connection is not established.
WLAN Green Blink
Off
On
Data transmitting or receiving over WLAN
The wireless is not installed.
The wireless module is ready and idle.
ADSL Green On
Off The ADSL connection is established. ADSL connection is not established.
On The ADSL link is terminated.ALARM Red Off Normal operating status

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Chapter 2 Installation
2.1 Preparing for Hardware Installation
The following equipment may be necessary to install the router:
AC power adapter
A suitable power adapter is shipped with the router. It is used to provide the
necessary power for the router’s operation.
LAN connection cable
To connect to a hub or PC, use an RJ45 cable.
RJ11 cable
An RJ11 cable is needed to connect to the LINE port.
Optional micro filter and POTS splitter
If you wish to connect both the router and a telephone, you will need the
optional micro filter or POTS splitter.

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2.2 Hardware Installation
Follow the instructions below to complete the hardware connections.
Step 1 Connect the Line port to a telephone-line using the supplied RJ-11 cable;
or if you wish to connect both the router and a telephone, connect the
ADSL port to a micro filter or POTS splitter with a RJ11 connection cable.
Step 2 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.

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Step 3 (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.
Step 4 Connect the Power jack to the shipped power cord.

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Step 5 Attach the power adapter to the wall outlet or other AC source.
Step 6 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.

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Chapter 3 Login via the Web Browser
This section describes how to manage the router via a Web browser from the remote
end. You can use a web browser such as Microsoft Internet Explorer, or Netscape
Navigator. It is best to set your display resolution to 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 IP Address
To log on to the device using a web browser, your workstation and the device should
both be on the same network segment.
STEP 1: Enter the TCP/IP screen and change the IP address to the domain of
192.168.1.x/24. You should choose an IP address from 192.168.1.132-
192.168.1.254 to avoid conflict with IP addresses reserved for the DHCP
pool (192.168.1.3 to 192.168.1.131).
STEP 2: Click OK to submit the settings.
STEP 3: Start your Internet browser with the default IP address 192.168.1.1.

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3.2 Login Procedure
To log on to the system from the Web browser, follow the steps below:
STEP 1: Start your Internet browser.
STEP 2: 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 3:You will be prompted to enter your user name and password. Type the
password, or if the password was not changed, type the default passwords.
The default USER name is root, and the default password is 12345 (some
versions require a login of 1234).
STEP 4:After successfully logging in, you will reach the main menu.

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Chapter 4 Web Basic Configuration
From the Basic menu bar, you can verify the software version, change passwords,
configure the WAN/LAN interfaces, set-up routing, save settings, reboot the device,
and retrieve the factory default settings.
4.1 Version Information
To verify the software version of your router, from the Basic Menu bar, click on
Version Information. The information will display as in the screenshot below.
4.2 Change the Password
To modify the password, click Change Password from the menu bar. Type the old
password and type the new password twice. Click Apply to submit the settings.
If you change the password, make sure you keep a record of it in a safe place, as
you will require it next time you log-on.

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4.3 ADSL Link Status
To view the ADSL link status, click Link Status from the tool bar. The page includes
the following information:
ADSL Line Status Shows the current status of the ADSL line
ADSL Mode Shows the ADSL standard that is currently configured. The
standards are: ANSI, G.DMT, G.LITE, MULTI.
Upstream Upstream data rate negotiated by DSL link (Kbit/s)
Downstream Downstream data rate negotiated by DSL link (Kbit/s)
Attenuation Current attenuation (dB) of both near end and far end.
SNR Margin Current SNR margin (dB)
HEC Number of ATM cells received with errors, since start of link.
Firmware The version number of the firmware
15 min ES counter Number of errored seconds for the current 15 minute period
CRC errors Number of errors per second since training
1 day ES counter Number of errored seconds for the current day

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4.4 WAN Setup
Click WAN Setup from the tool bar and configure the WAN interface for these
services: RFC1483 Bridged, RFC1483 Routed, PPPoE, PPPoA, and MER. The following
are the common settings to set up these services.
VPI and VCI
LLC Encapsulation: With LLC encapsulation, a link control header is added to the
Ethernet packet that identifies the protocol type (Ethernet). This allows multiple
protocols to be transmitted over the ATM Virtual Circuit.
VC Multiplexing: With VC Multiplexing, no link control header is needed as the
ATM Virtual Circuit is assumed to be carrying a single protocol.
Enable NAPT: NAPT or Network Address Port Translation, enables the translation
of private and public addresses. This feature is available for RFC 1483 Routed,
PPPoE, PPPoA, and MER. It is enabled for PPPoE.
4.4.1 RFC 1483 Bridged
When using RFC 1483 style bridging, Ethernet frames are “bridged” over ATM Virtual
Circuits. The Ethernet frames are encapsulated using either LLC Encapsulation or VC
Multiplexing. With LLC encapsulation, a link control header is added to the Ethernet
packet that identifies the protocol type (Ethernet). This allows multiple protocols to
be transmitted over the ATM Virtual Circuit. With VC Multiplexing, no link control
header is needed as the ATM Virtual Circuit is assumed to be carrying a single
protocol. Since the Ethernet packets are bridged, the router’s only responsibility is to
pass the Ethernet packets to and from the Internet Service Provider and the local
network. The IP addresses of the local network are assigned by the ISP either
statically or dynamically.
ADD AN ENTRY
To set up the RFC 1483 Bridged, configure the common fields on the top of the page
and click the Add button to add the entry.
MODIFY AN ENTRY
To modify an entry, complete the following steps:
STEP 1: Select the entry from the Current ATM PVC List, at the bottom of the
WAN Setup page. The current values of the selected entry will display in the
upper section of the page.
STEP 2: Change the parameters.
STEP 3: Click Modify.

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DELETE AN ENTRY
To delete an entry, Select it from the Current ATM PVC List, at the bottom of the
WAN Setup page, and click the Delete button.
4.4.2 RFC 1483 Routed
ADD AN ENTRY
To set up the RFC 1483 Routed, configure the common settings on the top of the
page, click RFC 1483 Routed and configure the specific settings (WAN IP address and
WAN subnet mask). Click the Add button to add the entry.
MODIFY AN ENTRY
To modify an entry, complete the following steps:
STEP 1: Select the entry from the Current ATM PVC List, at the bottom of the
WAN Setup page. The current values of the selected entry will display in the
upper section of the page.
STEP 2: Change the parameters.
STEP 3: Click Modify.
DELETE AN ENTRY
To delete an entry, Select it from the Current ATM PVC List, at the bottom of the
WAN Setup page, and click the Delete button.

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4.4.3 PPPoE
PPPoE provides service providers similar billing and access control as present in dial-
up services. In addition, with direct support to Ethernet it provides a low cost
solution to supporting multiple hosts at the customer premises. PPPoE provides
session authentication using either Password Authentication Protocol (PAP) or
Challenge Handshake Authentication Protocol (CHAP). Session accounting is possible
and conservation of bandwidth can be done by closing down unused sessions. By
utilizing PPP, link and network parameters are easily negotiated between the
IAD/Router and the ISP.
When using PPPoE, the system is assigned an IP address from the Internet Service
Provider as part of establishing the network connection. The system can be
configured as a DHCP server for its LAN and NAT can be used to translate private
addresses to public addresses. In this way, computers in the LAN do not have to
have their own public IP addresses.