Comtrend CT-5071T User Manual
CT-5071T
ADSL2+ Ethernet Router
User’s Manual
Version A3.1, May 15, 2007
261063-010
Warning
Before servicing or disassembling this equipment, always disconnect all
power and telephone lines from the device.
sted telephone line cord.
Use an appropriate power supply and a UL Li
Specification of the power supply is clearly stated in Appendix C -
Specifications.
reface
P
This manua
installation, operation and applications of the ADSL2+ Ethernet router.
he reader reading this manual is presumed to have a basic understanding of
T
telecommunications. For product update, new product release, manual revisio
software upgrade, technical support, etc., visit Comtrend Corporation at
http://www.comtrend.com
This document is subject to change without notice.
ecycling For The Environment
R
Never throw your electronic equipment
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.
l provides information to network administrators. It covers the
n,
out with household waste. Ask for
ersons who do not comply are subject to the sanctions and penalties set down in
P
law.
he cardboard box, the plastic contained in the packaging, and the parts that make
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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.
1
Copyrigh
t
Copyright© nd
messages c f
this docume ny
means without
2007 Comtrend Corporation. All rights reserved. The information a
ontained herein are proprietary to Comtrend Corporation. No part o
nt may be translated, transcribed, reproduced, in any form, or by a
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
INT-support@comtrend.com
2
Table of Contents
CHAPTER 1 INTRODUCTION ......................................................................................................6
1.1 FEATURES.................................................................................................................................. 6
1.2 APPLICATION .............................................................................................................................7
1.3 FRONT PANEL LED INDICATORS................................................................................................ 8
CHAPTER 2 INSTALLATION...................................................................................................... 10
2.1 HARDWARE INSTALLATION......................................................................................................10
CHAPTER 3 LOGIN VIA THE WEB BROWSER......................................................................12
3.1 IP ADDRESS.............................................................................................................................12
3.2 LOGIN PROCEDURE ................................................................................................................. 14
3.3 DEFAULT SETTINGS .................................................................................................................15
CHAPTER 4 QUICK SETUP......................................................................................................... 16
4.1 WAN....................................................................................................................................... 17
4.2 STATI ST IC S ..............................................................................................................................18
4.2.1 LAN Statistics..................................................................................................................19
4.2.2 WAN Statistics.................................................................................................................20
4.2.3 ATM statistics .................................................................................................................21
4.2.4 ADSL Statistics ...............................................................................................................23
4.2.5 Route............................................................................................................................... 25
4.2.6 ARP................................................................................................................................. 25
4.2.7 DHCP .............................................................................................................................26
CHAPTER 5 QUICK SETUP......................................................................................................... 27
5.1 AUTO QUICK SETUP ................................................................................................................28
5.2 MANUAL QUICK SETUP ........................................................................................................... 29
5.2.1 PPP over ATM (PPPoA) and PPP over Ethernet (PPPoE)............................................31
5.2.2 MAC Encapsulation Routing (MER) ..............................................................................36
5.2.3 IP Over ATM...................................................................................................................40
5.2.4 Bridging..........................................................................................................................44
CHAPTER 6 ADVANCED SETUP................................................................................................46
6.1 WAN....................................................................................................................................... 48
6.2 LAN........................................................................................................................................ 49
6.3 NAT ........................................................................................................................................ 51
6.3.1 Virtual Servers ................................................................................................................ 51
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6.3.2
Port Triggering...............................................................................................................53
6.3.3 DMZ Host .......................................................................................................................55
6.3.4 ALG ................................................................................................................................56
6.4 SECURITY ................................................................................................................................57
6.4.1 IP Filtering .....................................................................................................................57
6.4.2 Parental Control.............................................................................................................60
6.4.3 MAC Filtering ..................................................................................................................61
6.5 QUALITY OF SERVICE ..............................................................................................................63
6.6 ROUTING .................................................................................................................................66
6.6.1 Default Gateway............................................................................................................. 66
6.6.2 Static Route.....................................................................................................................67
6.7 DNS........................................................................................................................................ 68
6.7.1 DNS Server .....................................................................................................................68
6.7.2 Dynamic DNS .................................................................................................................69
6.8 DSL ........................................................................................................................................71
6.9 PORT MAPPING........................................................................................................................72
6.10 CERTIFICATE............................................................................................................................74
6.10.1 Local...............................................................................................................................74
6.10.2 Trusted CA......................................................................................................................76
CHAPTER 7 DIAGNOSTICS ........................................................................................................77
CHAPTER 8 MANAGEMENT ......................................................................................................79
8.1 SETTINGS ................................................................................................................................79
8.1.1 Configuration Backup.....................................................................................................80
8.1.2 Tools – Update Settings ..................................................................................................81
8.1.3 Restore Default............................................................................................................... 82
8.2 SYSTEM LOG ...........................................................................................................................84
8.3 TR-069 CLIENT.......................................................................................................................87
8.4 INTERNET TIME .......................................................................................................................89
8.5 ACCESS CONTROL ...................................................................................................................90
8.5.1 Services........................................................................................................................... 91
8.5.2 Access IP Addresses........................................................................................................92
8.5.3 Passwords.......................................................................................................................93
8.6 UPDATE SOFTWARE..................................................................................................................94
8.7 SAVE AND REBOOT ..................................................................................................................95
APPENDIX A: FIREWALL ................................................................................................................96
APPENDIX B: PIN ASSIGNMENTS...............................................................................................102
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APPENDIX C: SPECIFICATIONS..................................................................................................103
APPENDIX D: SSH CLIENT ...........................................................................................................105
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Chapter 1 Introduction
The CT-5071T ADSL2+ compact and high performance Ethernet router provides one
10/100 Ethernet Interface and offers ADSL connectivity at speeds of up to 24 Mbps.
It also has full routing capabilities to segment/route IP protocol, and supports
advanced security functions.
1.1 Features
• Supports TR-069
• TR-068 compliant
• IP filtering
• SPI (Stateful Packet Inspection)
• DoS protection
• Static route/RIP/RIP v2 routing functions
• Dynamic IP assignment
• NAT/PAT
• IGMP proxy
• DHCP server/relay/client
• DNS proxy
• Auto PVC configuration
• Up to 8 VCs
• Web-based management
• Remote configuration and upgrade
• Configuration backup and restoration
• FTP/TFTP server
• Embedded SNMP agent
• IP/MAC address filtering
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1.2 Application
The following diagram depicts the application of the CT-5071T.
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1.3 Front Panel LED Indicators
The front panel LEDs are shown in the picture here, 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
ADSL LINK
INTERNET
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Green
Green Blink IP connected and IP Traffic is passing thru the
On The ADSL link is established.
Off The ADSL link is not established.
Blink The ADSL link is training.
On IP connected and no traffic detected. Green
Off Modem power off, modem in bridged mode or
ADSL connection not present.
device (either direction)
Red
On
Device attempted to become IP connected and
failed (no DHCP response, no PPPoE response,
PPPoE authentication failed, no IP address from
IPCP, etc.)
For bridged mode, the indicator light is off.
If the IP or PPPoE session is dropped due to an idle
timeout, the light will remain green if an ADSL
connection is still present. If the session is
dropped for any other reason, the light is turned
off. The light will turn red when it attempts to
reconnect and DHCP or PPPoE fails.
LAN LINK
Green On An Ethernet Link is established.
Off An Ethernet Link is not established.
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.
Power Switch
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 one LAN
device. The ports are auto-sensing MDI/X and either straight-through cable or
Reset button
crossover cable can be used.
Connection to Power
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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.
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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-5071T (LAN port) is 192.168.1.1. To configure the
CT-5071T 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.
Note that the router’s default IP address is 192.168.1.1 and the default private
address range provided by the ISP server in the router is 192.168.1.2 through
192.168.1.254.
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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-5071T. 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-5071T 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. 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 to the Ethernet.
LAN port IP address: 192.168.1.1
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
DHCP server on LAN interface: enable
WAN IP address: none
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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.
Shown here is the Device Info screen for your reference.
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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 interface
Protocol Shows the connection type, such as PPPoE, PPPoA, etc.
IGMP Shows the state of the IGMP function
QoS Shows if IP QoS is enabled or disabled
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.
Note: This device does not support a USB interface.
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4.2.1 LAN Statistics
The Network Statistics screen shows interface statistics for ATM AAL5 interface, and
Ethernet interface. (The Network Statistics screen shows the interface statistics for
the LAN interface. Here provides byte transfer, packet transfer, Error and Drop
statistics for the LAN interface.)
Note: This device does not support a USB 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 interface
Received/Transmitted - Bytes
- Pkts
- Errs
- Drops
Rx/TX (receive/transmit) packet in Bytes
Rx/TX (receive/transmit) packets
Rx/TX (receive/transmit) the errored packets
Rx/TX (receive/transmit) dropped packets
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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 octets received over the interface
Out Octets Number of octets transmitted 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 HEC error
In Invalid Vpi Vci
Errors
In Port Not
Enabled Errors
In PTI Errors Number of cells received with an ATM header Payload Type
In Idle Cells Number of idle cells received
In Circuit Type
Number of cells received with an unregistered VCC address.
Number of cells received on a port that has not been enabled.
Indicator (PTI) error
Number of cells received with an illegal circuit type
Errors
In Oam RM CRC
Errors
In GFC Errors Number of cells received with a non-zero GFC.
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Number of OAM and RM cells received with CRC errors
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 Ucast 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 transmission
In Errors Number of received AAL5/AAL0 CPCS PDUs received in error.
The types of errors counted include CRC-32 errors.
Out Errors Number of received AAL5/AAL0 CPCS PDUs that could not 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 Description
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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Field Description
Mode Line Coding format, that can be selected G.dmt, G.lite,
T1.413, ADSL2, ADSL2+, AnnexL, AnnexM
Type Channel type Interleave or Fast
Line Coding Trellis On/Off
Status Lists the status of the DSL link
Link Power State Link output power state.
SNR Margin (dB) Signal to Noise Ratio (SNR) margin
Attenuation (dB) Estimate of average loop attenuation in the downstream
direction.
Output Power (dBm) Total upstream output power
Attainable Rate (Kbps) The sync rate you would obtain.
Rate (Kbps) Current sync rate.
Super Frames Total number of super frames
Super Frame Errors Number of super frames received with errors
RS Words Total number of Reed-Solomon code errors
RS Correctable Errors Total Number of RS with correctable errors
RS Uncorrectable Errors Total Number of RS words with uncorrectable errors
HEC Errors Total Number of Header Error Checksum errors
OCD Errors Total Number of out-of-cell Delineation errors
LCD Errors Total number of Loss of Cell Delineation
Total ES: Total Number of Errored Seconds
Total SES: Total Number of Severely Errored Seconds
Total UAS: Total Number of Unavailable Seconds
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4.2.5 Route
Choose Route to display the routes that the route information has learned.
4.2.6 ARP
Click ARP to display the ARP information.
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4.2.7 DHCP
Click DHCP to display the DHCP information.
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Chapter 5 Quick Setup
The Quick Setup allows the user to configure the ADSL router for DSL connectivity
and Internet access. It also guides the user though the WAN network setup first
and then the LAN interface setup. You can either manually customize the router or
follow the online instruction to set up the router.
The CT-5071T ADSL router supports the following five network operating modes
over an ATM PVC WAN interface.
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 on the Central Office side 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 CT-5071T is to run the PPPoE client. The CT-5071T 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, CT-5071T also supports pass-through PPPoE sessions from the
LAN side while simultaneously running a PPPoE client for non-PPPoE LAN
devices. NAT and firewall are always enabled when PPPoE mode is 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.
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Note: Up to eight 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.
5.1 Auto Quick Setup
The auto quick setup requires the ADSL link to be up. The ADSL router will
automatically detect the PVC. You only need to follow the online instructions that
you are prompted.
1. Select Quick Setup to display the DSL Quick Setup screen.
2. Click Next to start the setup process. Follow the online instructions to complete
the setting. This procedure will skip some processes like PVC index, or
encapsulation.
3. After the settings are complete, you can use the ADSL service.
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5.2 Manual Quick Setup
STEP 1: Click Quick Setup and un-tick the DSL Auto-connect checkbox to enable
manual configuration of the connection type.
Un-tick this checkbox to enable manual setup and display
the following screen.
STEP 2: Enter the Virtual Path Identifier (VPI) and Virtual Channel Identifier (VCI).
Select Enable Quality Of Service if required. Click Next.
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