LINKSYS WCGP200 Wireless-G Cable Gateway with 2 Phone Ports User Manual ADSL Router

LINKSYS LLC Wireless-G Cable Gateway with 2 Phone Ports ADSL Router

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WCGP200 User Manual HTML Version

Manual

User’s Manual

Rev: 1.1

2006/3/30

Information in this document is subject to change without notice. No part of this document may be reproduced or

transmitted in any form or by any means, electronic or mechanical, for any purpose, without the express written

permission of the seller.

The seller provides this documentation without warranty, term, or condition of any kind. The seller may make

improvements or changes in the product(s) and/or the program(s) described in this documentation at any time.

Microsoft, Windows, and the Windows logo are registered trademarks of Microsoft Corporation. All other trademarks

and brand names are the property of their respective proprietors.

Other product and company names herein may be trademarks of their respective owners.

Rev: 1.1

PKE235VWB-40

Cable Modem User Manual

Safety Notes

For Installation

 Use only the type of power source indicated on the marking labels.

 Use only the power adapter supplied with the product.

 Do not overload wall outlet or extension cords as this may increase the risk of electric shock or fire. If the

power cord is frayed, replace it with a new one.

 Proper ventilation is necessary to prevent the product overheating. Do not block or cover the slots and

openings on the device, which are intended for ventilation and proper operation. It is recommended to

mount the product with a stack.

 Do not place the product near any source of heat or expose it to direct sunshine.

 Do not expose the product to moisture. Never spill any liquid on the product.

 Do not attempt to connect with any computer accessory or electronic product without instructions from

qualified service personnel. This may result in risk of electronic shock or fire.

 Do not place this product on unstable stand or table.

For Using

 Power off and unplug this product from the wall outlet when it is not in use or before cleaning. Pay

attention to the temperature of the power adapter. The temperature might be high.

 After powering off the product, power on the product at least 15 seconds later.

 Do not block the ventilating openings of this product.

 When the product is expected to be not in use for a period of time, unplug the power cord of the product to

prevent it from the damage of storm or sudden increases in rating.

For Service

Do not attempt to disassemble or open covers of this unit by yourself; nor should you attempt to service the product

yourself, which may void the user’s authority to operate it. Contact qualified service personnel under the following

conditions:

 If the power cord or plug is damaged or frayed.

 If liquid has been spilled into the product.

 If the product has been exposed to rain or water.

 If the product does not operate normally when the operating instructions are followed.

 If the product has been dropped or the cabinet has been damaged.

 If the product exhibits a distinct change in performance.

Warning

 This equipment must be installed and operated in accordance with provided instructions and a minimum 20

cm spacing must be provided between computer mounted antenna and person’s body (excluding extremities

of hands, wrist and feet) during wireless modes of operation.

 This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) this device may not cause harmful interference, and (2) this device must accept any interference

received, including interference that may cause undesired operation.

Caution

 Any changes or modifications not expressly approved by the party responsible for compliance could void

the authority to operate equipment.

iii

CAUTION

RISK OF EXPLOSION IF BATTERY IS REPLACED

BY AN INCORRECT TYPE.

DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS.

Federal Communication Commission Interference Statement

This equipment has been tested and found to comply with the limits for a Class B digital device,

pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection

against harmful interference in a residential installation.

This equipment generates, uses and can radiate radio frequency energy and, if not installed and

used in accordance with the instructions, may cause harmful interference to radio

communications. However, there is no guarantee that interference will not occur in a particular

installation. If this equipment does cause harmful interference to radio or television reception,

which can be determined by turning the equipment off and on, the user is encouraged to try to

correct the interference by one of the following measures:

-Reorient or relocate the receiving antenna.

-Increase the separation between the equipment and receiver.

-Connect the equipment into an outlet on a circuit different from that to which the receiver is

connected.

-Consult the dealer or an experienced radio/TV technician for help.

This transmitter must not be co-located or operating in conjunction with any other antenna or

transmitter.

IC statement

Operation is subject to the following two conditions:

1) This device may not cause interference and

2) This device must accept any interference, including interference that may cause undesired

operation of the device.

This device has been designed to operate with an antenna having a maximum gain of 3 dBi.

Antenna having a higher gain is strictly prohibited per regulations of Industry Canada. The

required antenna impedance is 50 ohms.

IMPORTANT NOTE:

IC Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled

environment. This equipment should be installed and operated with a minimum distance of 20cm

between the radiator and your body. This transmitter must not be co-located or operated in

conjunction with any other antenna or transmitter.

Contents

Before You Use .................................................................................................vii

Features ............................................................................................... vii

General ....................................................................................... vii

CableLabs DOCSIS 1.0/1.1/2.0 Standard Compliant........................... vii

PacketCable

™

Compliant................................................................ vii

Two-Way Cable Residential Gateway................................................ vii

Wireless...................................................................................... viii

Firewall ...................................................................................... viii

Management & Maintenance.......................................................... viii

System Requirements..............................................................................ix

Unpacking..............................................................................................ix

Chapter 1: Overview.......................................................................................... 1

Physical Outlook.......................................................................................1

Front Panel ....................................................................................1

Rear Panel .....................................................................................2

Chapter 2: Installation....................................................................................... 3

Installation Procedure for Ethernet Interface ................................................3

Connecting the Cable Modem to Your Computer............................................4

Installing the Battery................................................................................5

Wall Mounting..........................................................................................6

Chapter 3: Software Installation and Configuration........................................... 7

Setting TCP/IP on Client PC .......................................................................7

For Windows 98/98SE/ME ................................................................7

For Windows 2000/XP......................................................................7

DHCP Server ...........................................................................................8

For Windows 98/98SE/ME ................................................................8

For Windows 2000/XP......................................................................8

For Apple Macintosh ........................................................................8

Renew PC IP Address................................................................................8

Chapter 4: Access Internet through Cable Modem............................................. 9

Accessing Internet....................................................................................9

Outline of Web Manager...................................................................9

Wireless................................................................................................10

Basic Wireless Settings ..................................................................10

Wireless Security - Disabled ...........................................................10

Wireless Security - WEP.................................................................11

Wireless Security - Radius..............................................................12

Wireless Security – WPA RADIUS.....................................................13

Wireless Security – WPA Pre-Shared Key..........................................14

Wireless Network Access................................................................14

Advanced Wireless Settings............................................................15

Access Restrictions.................................................................................16

Cable Modem User’s Manual

Website Blocking...........................................................................16

Time Access .................................................................................16

Filter Internet Traffic .....................................................................17

Administration .......................................................................................18

Security.......................................................................................18

Advanced Administration................................................................18

Status ..................................................................................................18

Gateway......................................................................................18

Connection...................................................................................19

Local Network...............................................................................19

Chapter 5: Troubleshooting ............................................................................. 21

Before You Use

WCGP200/WCGP200B2 is a DOCSIS 1.0/1.1/2.0 and CableHome 1.1 compliant cable residential gateway that

provides high-speed connectivity to residential, commercial, and education subscribers on public and private

networks via an existing cable infrastructure. WCGP200/WCGP200B2 is equipped with Ethernet, USB and

IEEE802.11g Wireless interfaces. WCGP200/WCGP200B2 uses the advanced PHY (A-TDMA/S-CDMA)

technologies to support higher bandwidth in the upstream. WCGP200/WCGP200B2 can inter-operate with any

DOCSIS and CableHome compliant headend equipment. It provides access to local area networks and word wide

Internet as well as the rich management features of CableLabs CableHome 1.1. The data security secures upstream

and downstream communications.

Features

 F-Connector for the cable interface

 Four standard RJ-45 connector for 10/100BaseT Ethernet with auto-negotiation and MDIS functions

 USB Connector for USB interface

 Two RJ-11 Foreign Exchange Station (FXS) ports for IP telephony

 IEEE802.11b/g Wireless Access Point

 Clear LED Display

 Up to 42.88 Mbps downstream and up to 30.72 Mbps upstream

 Frequency agility

 Transparent bridging for IP traffic

 Transparent bridging between CPE and RF interface

 Transparent bridging between Ethernet and USB interface

 Packet Filtering: CPE MAC filters, LLC filters, IP filters

 Multiple users/CPE supported

 Security with X.509 Authentication / RSA protected Key Exchange / 56 bits DES Data Encryption

 Interoperable with any DOCSIS compatible headend equipment

e™

™

 Support PacketCable NCS 1.0 MGCP1.0 (Media Gateway Control Protocol)

 Support different CODEC: PCM A-law, PCM-law, G.723.1, G.729, G.729a, G.729e, G.726, G.728 and BV16,

BV32.

 Echo Cancellation

 Voice Active Detection (VAD)

 DTMF detection and generation

 Comfort Noise Generation (CNG)

 Support V.90 fax and modem services

-W

 NAT (Network Address Translation) to support multiple users with one IP account for routing mode

vii

Cable Modem User’s Manual

 One to Many

 Many to Many

 Reverse NAT

 Advanced Application Level Gateways (ALG) Support

 Transparent bridging for IP traffic for bridge mode

 DHCP Client/Server

 Firewall Function

 Upgradeable to VPN function

 Upgradeable to RIP

 Fully 802.11g Compatible

 Fully 802.11b Compatible

 Up to 54 Mbps Data Rate

 Seamless Link Quality Around Home & Business Office

 64/128 bit WEP Encryption for Wireless Security

 Support Open System and Shared Key

 Supports IEEE 802.1x Port-Based Authentication with RADIUS Client, support MD5, TLS, TTLS

 Supports WPA and TKIP

 Upgradeable to TPC (transmit power control)

 Wireless LAN MAC Filtering

 Association Control List (ACL) for Wireless Clients Management

 IP Filtering

 Stateful Packet Inspection (SPI)

 Intrusion Detection for Denial of Service (DoS) attacks

 Configurable Access Policy

 Web-Based User Interface Management and Administration

 Logging & Alert

 DMZ Hosting

 Support Web pages and private DHCP server for status monitoring

 SNMP v1/v2c/v3 Management

 Telnet

 Remote secured operating firmware downloading

 Reset To Default Settings by RESET Push Button

 Syslog (Remote)

 Event Log (Local)

viii

Cable Modem User Manual

System Requirements

This cable modem equips four ETHERNET ports, wireless and USB interfaces. You can choose either one to connect

to the cable modem. Before installing the CABLE MODEM, please check the following requirements with your

computer.

For Ethernet Connection

Windows 98SE/2000/NT/ME/XP operating system or Apple Macintosh series 



10/100 Base-T NIC (network interface card)

Subscribe to a Cable Television Company for cable modem service

For USB Connection

Windows 98SE/2000/NT/ME/XP operating system or Apple Macintosh series

USB cable

Subscribe to a Cable Television Company for cable modem service

For Wireless Connection

Windows 98SE/2000/ ME/XP operating system

Wireless LAN card

Subscribe to a Cable Television Company for cable modem service

Unpacking

Check the contents of the package against the pack contents checklist below. If any of the items is missing, then

contact the dealer from whom the equipment was purchased.

Cable Modem 



RJ-45Cable

USB Cable

Linear Power Adapter

Quick Start Guide

Software CD

Cable Modem User’s Manual

Chapter 1: Overiew

Physical Outlook

The following illustration shows the front panel of the CABLE MODEM machine:

LED Indicators

The LEDs on the front panel are described in the table below (from left to right):

Cable Modem User’s Manual

Connector Description

REBOOT DEVICE Reset-to-Default configuration push button

15VDC DC-IN Power connector

TEL1/2 & TEL2 Telephony RJ-11 connector

Ethernet 1-4 Ethernet 10/100BaseT RJ-45 connector

USB USB connector

Reboot Telephony Reboot the VIOP function push button

CABLE F-Connector

Chapter 2: Installation

This cable modem equips USB, wireless and Ethernet interfaces. You can choose either one to connect to the cable

modem. Go to the “Installation Procedure for Ethernet Interface” section, if your computer has installed TCP/IP and

Ethernet card with 10/100BaseT capability. Go to the section “Installation Procedure for USB Interface”, if your PC

has USB port and the operating system is Microsoft Windows 98/ME/XP or Windows 2000.

Note: You don’t need to do installation for wireless interface.

Installation Procedure for Ethernet Interface

Follow the steps below for proper installation:

1. Connect a coaxial cable (supplied by the local Cable Television Company) to the CABLE connector on the

modem.

Note: To speed up the registration process of cable modem, the coaxial cable should be

connected to the modem prior to the power connector.

2. Connect the RJ-45 Ethernet cable to one of the ETHERNET connector on the modem, connect the other end

with the 10/100BaseT Ethernet port on your computer.

3. Plug the power adapter into the POWER connector of the modem.

4. Plug the other end of the power adapter into a power outlet.

5. The cable modem will look for the proper cable modem signal in the Cable Television network and process the

initial registration. The cable modem is ready for data transfer after the LED “CABLE” is in solid green.

Note: The Reset button at the rear panel is for maintenance purpose only.

Cable Modem User’s Manual

Connecting the Cable Modem to Your Computer

Below shows the connection between the Cable Modem and your computer.

Connection

Chapter 2: Installation

Installing the Battery

This section provides information on installing batteries into the EMTA. Follow the steps below:

1. Ensure the power cord is unplugged.

2. Remove the battery cover on the rear panel. There are two battery compartments. You may install a

single battery into either compartment.

3. Insert the battery into one of the rear battery compartments, as shown below.

4. Reattach the battery cover.

5. Plug the power cord into an AC-recepticle that is always ON (non-switchable). It’s best to secure the plug to the

wall plate using an extended wall plate screw. The battery will fully charge within 4 hours.

Cable Modem User’s Manual

Wall Mounting

The number of the screw: 2 pcs

Direction for wall mounting: LED panel upward.

Dimension for the screw: TBD

There are 2 slots on the underside of the Cable Modem and 4 slots on the underside of the Battery Pack that can be

used for wall mounting.

Note: When wall mounting the unit, ensure that it is within reach of the power outlet.

You will need 2 suitable screws which screw diameter would be 4.4 mm to wall mount the Cable Modem or the

Battery Pack. Two different wall mount directions could be chosen for the Battery Pack.

To do this:

1. For the Cable Modem, ensure that the wall you use is smooth, flat, dry and sturdy and use the 2 screws holes

which both are 101.6 mm apart.

2. For the Battery Pack, ensure that the wall you use is smooth, flat, dry and sturdy and use the 2 screws holes

which both are 101.6 mm or 152.0 mm apart for two different mount directions.

3. Fix the screws into wall, leaving their heads 3 mm (0.12 inch) clear of the wall surface.

4. Remove any connections to the unit and locate it over the screw heads. When in line, gently push the unit on

to the wall and move it downwards to secure.

Chapter 3: Software Installation and Configuration

Setting TCP/IP on Client PC

After you successfully complete the network interface card (Ethernet card) installation task, you need to make sure

the TCP/IP communications protocol used by the Ethernet card is installed and correctly configured on your system.

1. Click on the Start menu, point to Settings and click on Control Panel.

2. The Control Panel window will show up. Double-click the “Network” icon in the Control Panel window.

3. Windows will appear the Network dialog box. Click “Configuration” tab to bring it to the front, and on this tab,

a list of installed network components appears. Look for an entry that includes TCP/IP-> followed by the

Ethernet card installed in your computer.

4. The Select Network Component Type dialog box will show up. Click ”Protocol”, and then click ”Add”.

5. You will see the Select Network Protocol dialog box. Click “Microsoft” in the “Manufactures:” list, and then

click “TCP/IP” in the “Network Protocols:” list. Click “OK”.

6. You will be directed back to the Network dialog box, and on the “Configuration” tab, the entry that includes

TCP/IP -> followed by the Ethernet card installed in your computer will appear in the list of installed network

components.

7. Click TCP/IP -> followed by the Ethernet card installed in your computer, and then click ”Properties”. The

TCP/IP Properties dialog box will appear.

8. In the TCP/IP Properties dialog box, please follow the directions below: Click “IP Address” tab to bring it to the

front, and then click “Obtain an IP address automatically” on the tab.

9. Click “Gateway” to bring it to the front. On this tab, leave the “New gateway:” blank. If there is the entry in the

“Installed gateway:” list, click it and then click “Remove” to remove all installed gateways.

10. Click “DNS Configuration” tabs to bring it to the front, and click “Disable DNS”, then click “OK” to close the

dialog box.

11. The Copying Files dialog box will pop up and the system will start copying files from Windows. At the first

time you will be asked to insert the Windows 98 CD-ROM (or diskette) into the CD-ROM drive (or floppy

diskette drive) during the files copying, and follow the instructions when they show up, then click “OK”. It will

prompt another Copying Files dialog box. Please type the command line that Windows 98/ME files located in

the dialog box (For example, D:\win98). Click “OK” to continue the files copying.

12. Windows will appear the System Settings Change dialog box and ask you if you would like to restart your

computer. Click “Yes”.

1. Click “Start” button on your computer’s taskbar, point to “Settings”, and then click ”Network and Dial-up

Connections”.

2. The Network and Dial-up Connections window will show up. Double-click “Local Area Connection” icon in the

Network and Dial-up Connections window.

3. The Local Area Connection status window will show up. Click the “Properties” button.

4. Click “Internet Protocol (TCP/IP)” and then click “Properties”.

5. The Internet Protocol (TCP/IP) Properties dialog box appears. Click “Obtain an IP address automatically”. Click

“Obtain DNS server address automatically”. Click “OK” to close the dialog box.

6. Windows will appear the System Settings Change dialog box and ask you if you would like to restart your

computer. Click “Yes”.

Cable Modem User’s Manual

DHCP Server

PC connected to the cable modem can automatically get a private IP address from the DHCP server of cable modem

before cable modem is on line. The following steps will show you how to get an IP address from DHCP server of

cable modem before cable modem is on line.

1. Click “Start“, point to “Run“, and click to open the “Run“ windows.

2. Enter “winipcfg“ in the “Open“ field. Click “OK“ to execute the winipcfg and show the “IP

Configuration“ window.

3. Select the “Ethernet adapter“ to show the IP address. Press “Release“ and “Renew“ if the PC is not accessing

the Internet. After the cable modem is on line, you need to press the “Release“ and “Renew“ to get a new IP

address from your ISP’s server.

1. Click “Start“, point to “Run“, and click to open the “Run“ windows.

2. The Run dialog box appears. Type “cmd” in the “Open” field, and then click “OK” to execute the command.

3. You will enter the dos mode, type “ipconfig”, press “Enter” on your keyboard, and you will see the IP address

your computer get from the cable modem.

4. If PC is not access Internet, type “ipconfig /release”, and press “Enter” on your keyboard to release the IP.

5. Type “ipconfig /renew”, and press “Enter” on your keyboard to renew the IP. You can repeat the steps until your

computer gets the correct IP.

1. Click “Apple menu“, point to “Control Panels“, and click “TCP/IP” to open the “TCP/IP” window.

2. If the iMac gets an invalid IP, select “Using DHCP Server” in “Configure” field. Click the “Close box” at the

upper left corner to close the “TCP/IP” window.

3. Click the “Save” in the prompted message box.

4. You need to wait about 2 minutes and open “TCP/IP” window to see the new TCP/IP status.

Renew PC IP Address

There is a chance that your PC does not renew its IP address after cable modem is on line and the PC cannot access

the Internet. Please follow the procedures below to renew PC’s IP address after the cable modem is on line.

1. Click “Start“, point to “Run“, and click to open the “Run“ windows.

2. Enter winipcfg in the “Open“ field. Click “OK“ to execute the winipcfg and show the “IP

Configuration“ window.

3. Select the “Ethernet adapter“ to show the IP address. Press “Release“ and “Renew“ to get a new IP address

from your ISP’s server.

4. Select the “OK“ to close the IP Configuration window.

Chapter 4: Access Internet through Cable Modem

For making sure that you can get into Internet successfully, please make sure the following first.

1. Make sure the connection (through Ethernet) between the cable modem and your computer is OK.

2. Make sure the TCP/IP protocol is set properly.

3. Subscribe to Cable Television Company.

Accessing Internet

Once your host PC is properly configured, please proceed as follows:

1. Start your web browser and type the private IP address of the ADSL Router in the URL field: 192.168.0.1

2. After connecting to the device, you will be prompted to enter username and password. By default, there is no

username and the password is admin.

If you login successfully, the main page will appear. From now on this cable modem acts as a web server sending

HTML pages/forms on your request. You can fill in these pages/forms and apply them to the device.

The main screen will be shown as below.

Title: It indicates the title of this management interface.

Main Menu: Includes Wireless, Access Restrictions, Administration and Status

Main Window: It is the current workspace of the web management, containing configuration or status

information.

Cable Modem User’s Manual

Wireless

To set the basic configuration for the wireless features, please click Basic item from the Wireless menu.

Wireless Network:

Choose Enabled to enable the basic setting. Choose

Disabled to close the basic setting.

Wireless Network Name(SSID):

The SSID will be displayed automatically.

Wireless Channel:

There are 11 channels that you can choose. Choose

the one that is suitable for this device.

Wireless Network Type:

There are three types that you can choose. Each one

arise different functions for wireless network.

Current Encryption:

It shows the data encryption mode. For the basic

settings, there is no data encryption mode selected.

After you have finished all the settings, please click

Save Settings. It you click Cancel Changes, all the

settings that you have adjusted will not be saved.

For the disabled wireless security, there is no settings

that you need to adjust. It means your network does

not protect by any security that this router offered.

After finished settings, click Save Settings for

activation for next time.

Chapter 4: Access Internet through Cable Modem

For this mode, the settings that you can adjust

including wireless encryption level, default key,

passphrase for keys, wireless wep key #1 to #4.

Wireless Encryption Level:

Select the WEP mode for the WEP key function. You

can choose 64-bit or 128-bit for your necessity. If

you choose Off, the Encryption Keys will not be

shown on this page. If selected, data is encrypted

using the key before being transmitted. For example,

if you set 128-bit in this field, then the receiving

station must be set to use 128 Bit Encryption, and

have the same Key value too. Otherwise, it will not

be able to decrypt the data.

Default Key:

Select one of network key (from 1 to 4) that you set

on the Key boxes as default one.

PassPhrase for Keys:

You can type in ASCII codes into this field. The

range is from 8 characters to 64 characters. For

ASCII characters, you can type in 63 characters

in this field. If you want to type in 64 characters,

only hexadecimal characters can be used.

Generate WEP Keys:

Click this button to generate the PassPhrase.

Wireless WEP Key #1 to #4:

Type the encryption key length and fill out WEP

keys. The system allows you to type in 4 kinds of the

WEP key. For 64-bit WEP mode, the number you

can type is that 5 characters or 10 hexadecimal digits.

As for 128-bit WEP mode, the number you can type

is that 13 characters or 26 hexadecimal digits.

After finished settings, click Save Settings for

activation for next time.

Cable Modem User’s Manual

For this mode, the settings that you can adjust

including RADIUS Server, RADIUS Port, and

RADIUS Key.

RADIUS Server Address: RADIUS Server is a

protocol for carrying authentication, authorization,

and configuration information between a Network

Access Server which desires to authenticate its links

and a shared Authentication Server. Please type in the

IP Address for the RADIUS Server.

RADIUS Port: Except for the IP address of the

RADIUS Server, you have to enter the port number

for the server. Port 1812 is the reserved

RADIUS-authentication port described in RFC 2138.

Earlier AP (RADIUS clients) use port 1945. The

default value will be shown on this box. You can

keep and use it.

Shared Key: A Shared Key is like a password,

which is used between IAS and the specific RADIUS

client to verify identity. Both IAS and the RADIUS

client must be use the same Shared for successful

communication to occur. Type in the words for the

Shared Key.

After finished settings, click Save Settings for

activation for next time.

Chapter 4: Access Internet through Cable Modem

–

For the WPA network Authentication, the settings

that you can adjust including WPA Algorithms,

RADIUS Server Address, RADIUS Port, Shared key,

Key Renewal Timeout.

WPA Algorithms: Select the data encryption for the

WPA mode. There are two types that you can choose,

TKIP and AES.

RADIUS Server Address: RADIUS Server is a

protocol for carrying authentication, authorization,

and configuration information between a Network

Access Server which desires to authenticate its links

and a shared Authentication Server. Please type in the

IP Address for the RADIUS Server.

RADIUS Port: Except for the IP address of the

RADIUS Server, you have to enter the port number

for the server. Port 1812 is the reserved

RADIUS-authentication port described in RFC 2138.

Earlier RADIUS clients use port 1945. The default

value will be shown on this box. You can keep and

use it.

Shared Key: A Shared Key is like a password,

which is used between IAS and the specific RADIUS

client to verify identity. Both IAS and the RADIUS

client must be use the same Shared for successful

communication to occur. Type in the words for the

Shared Key.

Key Renewal Timeout: Type in the time for the

WAP group rekey interval. The unit is second.

TKIP takes the original master key only as a

starting point and derives its encryption keys

mathematically from this mater key. Then it

regularly changes and rotates the encryption keys

so that the same encryption key will be never used

twice.

AES provides security between client

workstations operating in ad hoc mode. It uses a

mathematical ciphering algorithm that employs

variable key sizes of 128, 192 or 256 bits.

After finished settings, click Save Settings for

activation for next time.

Cable Modem User’s Manual

–

-S

For the WPA-PSK mode, the settings that you can

adjust including WPA Algorithms, WPA Shared Key

and Group Key Renewal.

WPA Algorithms: Select the data encryption for the

WPA mode. There are three types that you can

choose, TKIPand AES.

WPA Shared Key: Please type the key to be

between 8 and 63 characters, or 64 hexadecimal

digits. Only the devices with a matching key that you

set here can join this network.

Group key Renewal: Type in the time for the WAP

group rekey interval. The unit is second.

TKIP takes the original master key only as a

starting point and derives its encryption keys

mathematically from this mater key. Then it

regularly changes and rotates the encryption keys

so that the same encryption key will be never used

twice.

AES provides security between client

workstations operating in ad hoc mode. It uses a

mathematical ciphering algorithm that employs

variable key sizes of 128, 192 or 256 bits.

After finished settings, click Save Settings for

activation for next time.

It allows you to set control to the AP and the connected clients.

Access List:

Click Enabled to enable this function; click Disabled

to close this function.

MAC Address:

Type in the MAC address of the AP or connected

clients into this field as an allowed or denied device.

Select MAC Address from Wireless Network

Computers:

Click this button to get the connected clients’ MAC

address.

Chapter 4: Access Internet through Cable Modem

The information of connected clients will be

displayed in this field if its MAC address is typed

above.

The Advanced wireless setting allows you to

configure the data rates and WiFi thresholds.

Basic Data Rates:

Choose Minimal or All as the basic rates.

Control TX Rate:

Choose Minimal or All as the supported rates.

Beacon Interval:

Set the period of beacon transmissions to allow

mobile stations to locate and identify a BSS. The

measure unit is “time units”(TU) of 1024

microseconds.

DTIM Interval:

The value you set here are used to inform mobile

stations when multicast frames that have been

buffered at the router will be delivered and how often

that delivery will happen.

Fragmentation Threshold:

Set the number of the fragmenting frames to make

the data be delivered without errors induced by the

interference.

Frames longer than the value you set here are

fragmented prior to the initial transmission into

fragments no longer than the value of the threshold.

RTS Threshold:

Set the value for sending a request to the destination.

All the frames of a length greater than the threshold

that you set here will be sent with the four-way frame

exchange. And, a length less than or equal to the

value that you set will not be preceeded by RTS.

Authentication Type:

It decides the authentication type will be activated as

open system function or shared key function.

Cable Modem User’s Manual

Access Restrictions

There are restrictions that you have to notice for access into the network.

Website/keyword Blocking:

Click Enable to activate this function; click Disable

to close this function.

New Website/Keyword:

Some websites/web pages that you do not want them

to be shown or appeared while you are surfing the

Internet, can be blocked by typing the website name

or using the words that you typed here in their

webpages. Please type in the website/words in the

box and click Add. The new one will be shown on the

Website/Keyword List to tell the system the web

page with this work cannot access into.

Website/Keyword List:

It shows the words you type in the above box. If you

want to delete any word here, simple choose that

word to make it inverse, and click Remove. The web

site/word will be deleted immediately.

Select MAC Address from Networked Computers:

If you do not want to type the host address by

yourself, you can use this button to select any one

which is shown in the dialog box.

Add:

Type in the MAC address in these boxes, and click

Add. The new one will be added and be shown on the

drop down list below.

Remove:

If you do want to remove any added MAC address,

please choose the one from the drop down list and

click this button.

Day to Block:

Choose the day that you want the block function to

be activated.

Time to Block:

To make a whole day block, please choose All day.

And type in the start and end time in the

corresponding boxes.

Current System Time:

It will show current time if it is invoked.

Chapter 4: Access Internet through Cable Modem

This dialog shows the networked computer that your

computer can choose for executing time access.

IP Address Range Start to End:

You have to tell the system the start point and end

point for the filter internet traffic used. Type in the

number from 0 to 256 in these fields.

Port Range:

The default setting for port range is from 1 to 65535.

You don’t need to change it.

Protocol:

Select one of the protocols for using in this function.

Enable:

Click enable to activate this function. If you do not

check this item, the function will not be activated

even if you have made some decisions.

Cable Modem User’s Manual

Administration

Gateway Password:

Please type in the password for the gateway. And

then retype in the below field again.

Click Save Settings to save the configuration.

Reset Factory Default:

Click Yes to use the factory default after restart this

device. Click No to use current settings that you just

configured. This function is useful when you adjust

the other settings in disorder.

Routing and NAT:

Click Enable to invoke this function; click Disable

to close this function.

Click Save Settings to save the configuration.

Status

This page shows the software information containing

the standard specification compliant, software

version, and so on.

Chapter 4: Access Internet through Cable Modem

This page shows current connection status containing

upstream channel, downstream channel, and startup

procedure.

This page shows the local network information for

your reference.

Cable Modem User’s Manual

Chapter 5: Troubleshooting

If the suggested solutions in this section do not resolve your issue, contact your system administrator or Internet

service provider.

Can I use the same cable line for TV and cable modem?

A. Yes, the TV and cable modem uses the cable line. You need a splitter to use them at the same time. Ask Cable

Company to install the splitter for you to avoid signal degradation.

My cable modem cannot get a solid green light on the Status LED when I connect

the cable back.

A. The cable modem lost the signal during the disconnection period and it will keeps scanning other available signal.

When you connect the cable back, it might take a while to find the correct channel. You can power cycle the

modem to speedup the process since modem will remember the channel last time and it will start from that

channel at startup.

Which port of the Ethernet hub should I connect to the modem if I need to connect

multiple PC to the modem?

A. You should connect the modem to the up-link port of the hub. The link LED of the hub will be on.

How do I see my IP address?

A. If you are using Windows 95/98/ME, the winipcfg command will show you to IP address of the PC connected to

the cable modem. Notice that even though you seem get the same address all the time, it may still be a dynamic

address.

Can I just connect the cable modem and two computers to a hub?

A. Yes. You need to make sure you can get two IP addresses from your cable modem service provider. Connect the

modem to the up-link port of the hub.

I have a cable modem. How can I make it work?

A. Basically, modem is plug and play. You can just connect the modem and you are ready to go if you have the

subscription. For ensure good signal for your cable modem, you should ask your cable provider to install the

cable modem for you.

Can I switch between a notebook and PC using the same cable modem? Will there

be a problem to obtain a DHCP IP address?

A. This issue depends on how your cable modem service provider manages the modems. If you are using one of the

cable modem service providers that register your PC based on the MAC address of the Ethernet card in the PC,

then you will have to call them and have them change that entry every time you switch between the two. Ask

them if you have problem on this issue.

LINKSYS WCGP200 Wireless-G Cable Gateway with 2 Phone Ports User Manual ADSL Router

LINKSYS LLC Wireless-G Cable Gateway with 2 Phone Ports ADSL Router

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