Comtrend Corporation CT-5624S User manual

CT-5624

4-Port ADSL2+ Router

User Manual

Version A1.2, June 9, 2008

261085-005

Preface

This manual provides information related to the installation, operation, and

application of this device. The individual reading this manual is presumed to

have a basic understanding of telecommunications terminology and concepts.

If you find the product to be inoperable or malfunctioning, please contact

technical support for immediate service by email at INT-support@comtrend.com

For product update, new product release, manual revision, or software upgrades,

please visit our website at http://www.comtrend.com

Important Safety Instructions

With reference to unpacking, installation, use and maintenance of your electronic

device, the following basic guidelines are recommended:

•

Do not use or install this product near water, to avoid fire or shock hazard.

For example, near a bathtub, kitchen sink or laundry tub, or near a swimming

pool. Also, do not expose the equipment to rain or damp areas (e.g. a wet

basement).

Do not connect the power supply cord on elevated surfaces. Allow it to lie

freely. There should be no obstructions in its path and no heavy items should

be placed on the cord. In addition, do not walk on, step on or mistreat the

cord.

Use only the power cord and adapter that are shipped with this device.

To safeguard the equipment against overheating, make sure that all openings

in the unit that offer exposure to air are not blocked.

Avoid using a telephone (other than a cordless type) during an electrical

storm. There may be a remote risk of electric shock from lightening. Also,

do not use the telephone to report a gas leak in the vicinity of the leak.

Never install telephone wiring during stormy weather conditions.

CAUTION:

To reduce the risk of fire, use only No. 26 AWG or larger telecommunication

line cord.

Always disconnect all telephone lines from the wall outlet before servicing or

disassembling this equipment.

WARNING

Disconnect the power line from the device before servicing. 

 Power supply specifications are clearly stated in Appendix C

Copyright

contained herein is proprietary to Comtrend Corporation. No part of this

document may be translated, transcribed, reproduced, in any form, or by any

means without prior written consent of Comtrend Corporation.

NOTE: This document is subject to change without notice.

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Table of Contents

CHAPTER 1 INTRODUCTION........................................................................................................4

CHAPTER 2 INSTALLATION..........................................................................................................5

CHAPTER 3 CONNECTING THE HARDWARE ..........................................................................6

CHAPTER 4 LOGIN VIA THE WEB BROWSER .........................................................................7

4.1 IP CONFIGURATION..........................................................................................................................7

4.2 LOGIN PROCEDURE..........................................................................................................................8

4.3 DEFAULT SETTINGS .........................................................................................................................9

CHAPTER 5 DEVICE INFORMATION........................................................................................10

5.1 WAN.............................................................................................................................................11

5.2 STATISTICS.....................................................................................................................................12

5.2.1 LAN Statistics..................................................................................................................12

5.2.2 WAN Statistics.................................................................................................................13

5.2.3 ATM statistics .................................................................................................................14

5.2.4 ADSL Statistics ...............................................................................................................16

5.3 ROUTE...........................................................................................................................................19

5.4 ARP...............................................................................................................................................19

5.5 DHCP............................................................................................................................................20

CHAPTER 6 QUICK SETUP..........................................................................................................21

6.1 AUTO QUICK SETUP.......................................................................................................................22

6.2 MANUAL QUICK SETUP .................................................................................................................23

6.2.1 PPP over ATM (PPPoA) and PPP over Ethernet (PPPoE)............................................24

6.2.2 MAC Encapsulation Routing (MER) ..............................................................................28

6.2.3 IP Over ATM...................................................................................................................31

6.2.4 Bridging..........................................................................................................................34

CHAPTER 7 ADVANCED SETUP..................................................................................................37

7.1 WAN.............................................................................................................................................37

7.2 LAN..............................................................................................................................................38

7.3 NAT ..............................................................................................................................................39

7.3.1 Virtual Servers................................................................................................................39

7.3.2 Port Triggering...............................................................................................................41

7.3.3 DMZ Host.......................................................................................................................42

7.4 SECURITY ......................................................................................................................................43

7.4.1 IP Filtering.....................................................................................................................43

7.4.2 MAC Filter......................................................................................................................45

7.5 QUALITY OF SERVICE ....................................................................................................................47

7.6 ROUTING .......................................................................................................................................49

7.6.1 Default Gateway.............................................................................................................49

7.6.2 Static Route.....................................................................................................................50

7.6.3 RIP..................................................................................................................................51

7.7 DNS..............................................................................................................................................52

7.7.1 DNS Server.....................................................................................................................52

7.7.2 Dynamic DNS.................................................................................................................52

7.8 DSL...............................................................................................................................................54

7.9 PORT MAPPING..............................................................................................................................55

7.10 PING ............................................................................................................................................57

7.11 TRACEROUTE ..............................................................................................................................58

CHAPTER 8 DIAGNOSTICS..........................................................................................................59

CHAPTER 9 MANAGEMENT .......................................................................................................61

9.1 SETTINGS.......................................................................................................................................61

9.1.1 Backup Settings...............................................................................................................61

9.1.2 Update Settings...............................................................................................................62

9.1.3 Restore Default...............................................................................................................63

9.2 SYSTEM LOG .................................................................................................................................64

9.3 SNMP AGENT ...............................................................................................................................66

9.4 INTERNET TIME .............................................................................................................................67

9.5 ACCESS CONTROL .........................................................................................................................68

9.5.1 Services...........................................................................................................................68

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9.5.2 IP Addresses ...................................................................................................................69

9.5.3 Passwords.......................................................................................................................70

9.6 UPDATE SOFTWARE........................................................................................................................71

9.7 SAVE AND REBOOT ........................................................................................................................72

APPENDIX A: FIREWALL ................................................................................................................73

APPENDIX B: PIN ASSIGNMENTS.................................................................................................77

APPENDIX C: SPECIFICATIONS....................................................................................................78

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Chapter 1 Introduction

The CT-5624 series ADSL2+ compact and high performance Ethernet router

provides four 10/100 Ethernet Interfaces, and one ADSL line interface to access

the Internet, incorporating LAN or Video on Demand over one ordinary telephone

line, at speeds of up to 24 Mbps. It also has full routing capabilities to

segment/route IP protocol and supports advanced security functions.

The CT-5624 is for ADSL over POTS (i.e. Annex A). The CT-5624 series can

operate in router or bridge mode. In addition, the CT-5624 series protects all of

your networked computers with advanced security technologies, such as virtual

private networks (VPNs) with PPTP passthrough, L2TP passthrough, IPSec

passthrough, and firewall.

FEATURES

•

IP address filtering

Dynamic IP assignment

IGMP Proxy

DNS Proxy

Per-VC packet level QoS

Embedded SNMP agent

Remote configuration and upgrade

FTP/TFTP server

Static route/RIP v1/v2

NAT/PAT

DHCP Server/Client

Auto PVC configuration

Up to 8 VCs

Web-based management

Configuration backup and restore

APPLICATION

The following diagram depicts the application of the CT-5624.

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Chapter 2 Installation

Front Panel

The front panel contains lights called LEDs that indicate the status of the unit.

Front Panel LEDs

Red: No ADSL link

Orange on: The ADSL connection is established and the

device had attempted to obtain an IP address but failed

(reason: no DHCP response, no PPPoE response, PPPoE

authentication failed, no IP address from IPCP, etc.)

Red/Orange interlacing: the DSL is training.

Green on: The ADSL connection is established and Internet

is established.

INTERNET/DSL

Off: Modem power off

LAN 1x-4X (Green) On: The Ethernet connection is established.

Off: The Ethernet connection is not established.

Blink: Data transmitting or receiving.

Rear Panel

The rear panel contains the ports for the unit's data and power connections.

Label Function

LINE RJ-11 connector: Connects the device to a

telephone jack using the supplied cable

LAN 1-4 RJ-45 connector: Connects the device to your PC

LAN port, or to the uplink port on your LAN hub.

Use the Ethernet cable provided.

Power Connects to the power adapter.

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Chapter 3 Connecting the Hardware

You connect the device to the phone jack, the power outlet, and your computer or

network.

Step 1. Connect the ADSL cable and optional telephone.

Connect one end of the provided phone cable to the port labeled ADSL on the

rear panel of the device. Connect the other end to your wall phone jack. You can

attach a telephone line to the device. This is helpful when the ADSL line uses the

only convenient wall phone jack. If desired, connect the telephone cable to the

port labeled PHONE.

NOTE: Although you use the same type of cable, The ADSL/PHONE ports are

not interchangeable. Do not route the ADSL connection through the

PHONE port.

Step 2. Connect the Ethernet cable.

If you are connecting a LAN to the 4-port ADSL/Ethernet router, attach one end of

a provided Ethernet cable to a regular hub port and the other to the Ethernet port

on the router.

Step 3. Attach the power connector.

Connect the AC power adapter to the PWR connector on the back of the device

and plug in the adapter to a wall outlet or power strip.

Step 4. Turn on the Router and power up your systems.

Turn on and boot up your computer(s) and any LAN devices such as hubs or

switches.

Step 5. Configure the Router with the Web User Interface (WUI).

Chapters 5 through 9 show how to configure the CT-5624 to meet your needs.

Step 6. Save the configurations and Reboot.

To make the settings you configured on the router take effect.

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Chapter 4 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.

4.1 IP Configuration

The default IP address of the CT-5624 (LAN port) is 192.168.1.1. To configure

the CT-5624 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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4.2 Login Procedure

Perform the following steps to bring up the Web user interface and configure the

CT-5624. 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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4.3 Default Settings

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.

•

One PPPoE PVC (VPI=8, VCI=35)

NAT Enabled and Firewall Disabled

DHCP server on LAN interface: Enabled

WAN IP address: None

LAN port IP address: 192.168.1.1

Local administrator account name: root

Local administrator account password: 12345

Remote WAN access: Enabled

Remote WAN access account name: root

Remote WAN access account password: 12345

Technical Note:

During power on initialization, the router initializes all configuration attributes to

default values. It will then read the configuration profile from the Permanent

Storage section of flash memory. The default attributes are overwritten when

identical attributes with different values are configured. The configuration profile

in Permanent Storage can be created via the Web User Interface (WUI), the

console, telnet client or other management tools. 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.

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Chapter 5 Device Information

The Summary screen appears as shown below.

NOTE: The selections available on the main menu are based upon the

configured connections and the active user account.

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5.1 WAN

This screen displays the configured PVC(s) and their 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

NAT Shows if NAT is Enabled or Disabled

FIREWALL Shows if Firewall is Enabled or Disabled

QoS Shows if QoS (quality of service) 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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5.2 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.

5.2.1 LAN Statistics

The Network Statistics screen shows interface statistics for the Ethernet interface.

(The Network Statistics screen shows interface statistics for LAN of Ethernet

interface. Here provides byte transfer, packet transfer, Error and Drop statistics

for the LAN interface.)

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5.2.2 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) packets with errors

Rx/TX (receive/transmit) dropped packets

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5.2.3 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.

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.

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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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5.2.4 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 refreshes the ADSL statistics.

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Field Description

Mode T1.413, G.lite, G.DMT, ADSL2/2+ or Re-ADSL

Type Channel type Interleave or Fast

Line Coding Line Coding format, that can be selected G.dmt, G.lite,

T1.413, ADSL2, Annex L and Annex M

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 avera

g

e 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.

In G.DMT mode, the following section is inserted.

K Number of bytes in DMT frame

R Number of check bytes in RS code word

S RS code word size in DMT frame

D The interleaver depth

Delay The delay in milliseconds (msec)

In ADSL2+ mode, the following section is inserted.

MSGc Number of bytes in overhead channel message

B Number of bytes in Mux Data Frame

M Number of Mux Data Frames in FEC Data Frame

T Max Data Frames over sync bytes

R Number of check bytes in FEC Data Frame

S Ratio of FEC over PMD Data Frame length

L Number of bits in PMD Data Frame

D The interleaver depth

Delay The delay in milliseconds (msec)

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 Cells Total number of ATM cells (including idle and data cells)

Data Cells Total number of ATM data cells

Bit Errors Total number of bit errors

In ADSL2+ mode, the following section is inserted.

Tot al ES: Tot al N um ber of Er ror ed S ec on d s

Total SES: Total Number of Severely Errored Seconds

Total UAS: Total Number of Unavailable Seconds

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Within the ADSL Statistics window, a Bit Error Rate (BER) test can be started

using the ADSL BER Test button. A small window will open when the button is

pressed; it will appear as shown below. Click Start to start the test or Close.

If the test is successful, the pop-up window will display as follows.

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5.3 Route

Choose Route to display the routes that the route information has learned.

5.4 ARP

Click ARP to display the ARP information.

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