Comtrend Corporation CT-5071E User manual

CT-5071E
ADSL2+ Ethernet Router
User’s Manual
Version A4.0, May 07, 2007
261063-011

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.
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 B -
Specifications.
Recycling For The Environment
Never throw your electronic equipment out with household waste. Ask for
information from your town council on how to correctly dispose of it, so that it does
not damage the environment. Always respect the current legislation regarding waste
disposal.
Persons who do not comply are subject to the sanctions and penalties set down in
law.
The cardboard box, the plastic contained in the packaging, and the parts that make
up the device can be recycled in accordance with regionally established regulations.
The symbol of the container with the cross, which is found on the
device means that when the equipment has reached the end of its
working life, it must be taken to the recycling centres provided,
and that its processing must be separate from that of domestic
waste.
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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]
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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
CHAPTER 3 LOGIN VIA THE WEB BROWSER ................................... 9
3.1 IP ADDRESS ......................................................................................................... 9
3.2 LOGIN PROCEDURE ............................................................................................ 10
3.2.1 Default Settings........................................................................................ 11
CHAPTER 4 DEVICE INFO ................................................................................ 12
4.1 WAN................................................................................................................. 13
4.2 STATISTICS ........................................................................................................ 14
4.2.1 LAN Statistics ........................................................................................... 15
4.2.2 WAN Statistics .......................................................................................... 16
4.2.3 ATM statistics ........................................................................................... 17
4.2.4 ADSL Statistics ......................................................................................... 19
4.2.5 Route......................................................................................................... 21
4.2.6 ARP … .................................................................................................... 21
4.2.7 Bridging ................................................................................................... 22
4.2.8 IGMP Proxy ............................................................................................. 23
CHAPTER 5 QUICK SETUP............................................................................... 24
5.1 AUTO QUICK SETUP........................................................................................... 25
5.2 MANUAL QUICK SETUP...................................................................................... 26
5.2.1 PPP over ATM (PPPoA) and PPP over Ethernet (PPPoE) ..................... 28
5.2.2 MAC Encapsulation Routing (MER) ........................................................ 32
5.2.3 IP Over ATM (IPoA)................................................................................. 36
5.2.4 Bridging .................................................................................................... 40
CHAPTER 6 ADVANCED SETUP................................................................ 42
6.1 WAN................................................................................................................. 42
6.2 LAN .................................................................................................................. 43
6.3 NAT ................................................................................................................. 44
6.3.1 Virtual Servers.......................................................................................... 44
6.3.2 Port Triggering.......................................................................................... 46
6.3.3 DMZ Host .................................................................................................. 48
6.4 SECURITY........................................................................................................... 49
6.4.1 MAC Filtering ............................................................................................ 49
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6.4.2 Parental Control ...................................................................................... 50
6.4.3 IP Filtering ................................................................................................ 52
6.5 ROUTING............................................................................................................ 55
6.5.1 Default Gateway....................................................................................... 55
6.5.2 Static Route .............................................................................................. 56
6.6 DNS................................................................................................................... 57
6.6.1 DNS Server ............................................................................................... 57
6.6.2 Dynamic DNS ........................................................................................... 57
6.7 DSL ................................................................................................................... 60
CHAPTER 7 DIAGNOSTICS.......................................................................... 61
CHAPTER 8 MANAGEMENT ....................................................................... 62
8.1 SETTINGS ........................................................................................................... 62
8.1.1 Configuration Backup............................................................................... 63
8.1.2 Configuration Update ................................................................................ 63
8.1.3 Restore Default......................................................................................... 64
8.2 SYSTEM LOG...................................................................................................... 66
8.3 INTERNET TIME.................................................................................................. 68
8.4 ACCESS CONTROL................................................................................................. 69
8.4.1 Services .................................................................................................... 70
8.4.2 Access IP Addresses................................................................................. 71
8.4.3 Password Change ..................................................................................... 72
8.5 UPDATE SOFTWARE............................................................................................ 73
8.6 SAVE AND REBOOT ............................................................................................ 74
APPENDIX A: PIN ASSIGNMENTS................................................................ 75
APPENDIX B: SPECIFICATIONS.................................................................... 76
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Chapter 1 Introduction
The CT-5071E is a wired Local Area Network ADSL2+ router. One 10/100 Base-T
Ethernet port provides wired LAN. The CT-5071E ADSL router provides state of the
art security features such as Firewall and VPN pass through. The CT-5071E is
designed for residential applications that require wired connectivity to an ADSL
broadband network. The CT-5071E supports up to 4 contiguous virtual connections
allowing for multiple simultaneous Internet connections.
1.1 Features
 IP/MAC address filtering
 Static route/RIP/RIP v2 routing functions
 Dynamic IP assignment
 NAT/PAT
 IGMP Proxy
 DHCP Server/Relay/Client
 DNS Proxy
 Up to 4 VCs
 Web-based management
 Remote configuration and upgrade
 Configuration backup and restoration
 FTP/TFTP server
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1.2 Application
The following diagram depicts the application of the CT-5071E.
6

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 The ADSL link is established.
Off The ADSL link is not established
ADSL LINK
Green Blink The ADSL link is training
On Normal operating statusGreen
Off The ADSL link is terminated.
ADSL TX/RX
Green Blink Data transmitting or receiving over ADSL.
Green On An Ethernet Link is established.
Off An Ethernet Link is not established.
LAN LINK
Green Blink Data transmitting or receiving over LAN.
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Chapter 2 Installation
2.1 Hardware Installation
In the rear panel, there is a reset button. It is used to load the factory default
settings. Hold down the button until the LED’s start blinking simultaneously (about
5 seconds). After the device has booted successfully, the factory default settings are
retrieved.
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 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, push the power-switch in, 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.
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 this equipment always disconnect all power cords
and telephone lines from the wall outlet.
Reset button
Power Switch
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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-5071E (LAN port) is 192.168.1.1. To configure the
CT-5071E 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 with the default IP address 192.168.1.1.
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3.2 Login Procedure
Perform the following steps to bring up the Web user interface and configure the CT-
5071E. 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 Device Info menu.
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3.2.1 Default Settings
During power on initialization, the CT-5071E 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 or telnet user
interface, or other management protocols. To load the factory default settings, hold
the reset button down for at least 5 seconds until the power indicator blinks,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 to the Ethernet.
 LAN port IP address: 192.168.1.1
 Local administrator account name: root
 Local administrator account password: 12345
 Remote WAN access: disabled
 NAT and firewall: disabled
 DHCP server on LAN interface: disabled
 WAN IP address: none
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Chapter 4 Device Info
After login, the Device Info screen appears as shown.
Note: The selections available on the left side of menu are based upon the
configured connection.
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4.1 WAN
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 statue of the IGMP function
Firewall Shows if the Firewall enabled or disabled
Nat Shows if the Network Address Translation(NAT) is enabled or
disabled.
QoS Shows the statue of the QoS 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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4.2.1 LAN Statistics
The Network Statistics screen shows interface statistics for ATM AAL5 interface and
Ethernet interfaces. (The Network Statistics screen shows interface statistics for LAN
of Ethernet interfaces. This shows byte transfer, packet transfer, Error and Drop
statistics for the LAN interface.)
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4.2.2 WAN Statistics
Service Shows the service type
VPI/VCI Shows the values of the ATM VPI/VCI
Protocol Shows the connection type, such as PPPoE,
PPPoA, etc.
Interface Shows connection interfaces
Received/Transmitted -
Bytes
Pkts
Errs
Drops
Rx/TX (receive/transmit) packet in Byte
Rx/TX (receive/transmit) packets
Rx/TX (receive/transmit) the packets which are
errors,
Rx/TX (receive/transmit) the packets which are
dropped
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4.2.3 ATM statistics
The following figure shows the ATM statistics screen.
ATM Interface Statistics
Field Description
In Octets Number of received octets over the interface
OUT OCTETS Number of transmitted octets over the interface
In Errors Number of cells dropped due to uncorrectable HEC
errors
In Unknown Number of received cells discarded during cell header
validation, including cells with unrecognized VPI/VCI
values, and cells with invalid cell header patterns. If
cells with undefined PTI values are discarded, they are
also counted here.
In Hec Errors Number of cells received with an ATM Cell Header HEX
error
In Invalid Vpi Vci Errors Number of cells received with an unregistered VCC
address.
In Port Not Enabled Errors Number of cells received on a port that has not been
enabled.
In PTI Errors Number of cells received with an ATM header Payload
Type Indicator (PTI) error
In Idle Cells Number of idle cells received
In Circuit Type Errors Number of cells received with an illegal circuit type
In Oam RM CRC Errors Number of OAM and RM cells received with CRC errors
In GFC Errors Number of cells received with a non-zero GFC.
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ATM AAL5 Layer Statistics over ADSL interface
Field Description
In Octets Number of received AAL5/AAL0 CPCS PDU octets
Out Octets Number of received AAL5/AAL0 CPCS PDUs octets
transmitted
In Ucst Pkts Number of received AAL5/AAL0 CPCS PDUs passed to a
higher-layer for transmission
Out Ucast Pkts Number of received AAL5/AAL0 CPCS PDUs received from a
higher layer for transmissions
In Errors Number of received AAL5/AAL0 CPCS PDUs received that
contain an error. The types of errors counted include CRC-
32 errors.
Out Errors Number of received AAL5/AAL0 CPCS PDUs that could be
transmitted due to errors.
In Discards Number of received AAL5/AAL0 CPCS PDUs discarded due to
an input buffer overflow condition.
Out Discards This field is not currently used
ATM AAL5 LAYER STATISTICS FOR EACH VCC OVER ADSL INTERFACE
Field Descriptions
CRC Errors Number of PDUs received with CRC-32 errors
SAR TimeOuts Number of partially re-assembled PDUs, which were
discarded because they were not fully re-assembled within
the required period of time. If the re-assembly time is not
supported then, this object contains a zero value.
Over Sized SDUs Number of PDUs discarded because the corresponding SDU
was too large
Short Packets Errors Number of PDUs discarded because the PDU length was less
than the size of the AAL5 trailer
Length Errors Number of PDUs discarded because the PDU length did not
match the length in the AAL5 trailer
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4.2.4 ADSL Statistics
The following figure shows the ADSL Network Statistics screen. Within the ADSL
Statistics window, a bit Error Rate Test can be started using the ADSL BER Test
button. The Reset button resets the statistics.
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