Linksys WRT54GP2A-AT Router Manual PDF (Setup & Configuration Guide)

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45

Appendix A: Troubleshooting

Common Problems and Solutions

Wireless-G Broadband Router with 2 Phone Ports

Appendix A: Troubleshooting

This appendix provides solutions to problems that may occur during the installation and operation of the Router.

Read the description below to solve your problems. If you can't find an answer here, check the AT&T website at

http://www.usa.att.com/callvantage/faqs/index.jsp

or the Linksys website at

www.linksys.com

.

Common Problems and Solutions

1.

I don’t hear a dial tone, and the Phone 1 LED is not lit.

Go through this checklist until your problem is solved:

•

Make sure the telephone is plugged into the Phone 1 port.

•

Disconnect and re-connect the RJ-11 telephone cable between the Router and telephone.

•

Make sure your telephone is set to its tone setting (not pulse).

•

Make sure your network has an active Internet connection. Try to access the Internet, and check to see if

the Router’s Internet LED is lit. If you do not have a connection, power off your network devices, including

the Router and cable/DSL modem. Wait 30 seconds, and power on the cable/DSL modem first. Then

power on the Router and other network devices.

•

Verify your account information and confirm that the phone line is registered with AT&T.

•

If none of the above works, contact AT&T at 1-866-596-8464.

2.

The Status - Voice screen of the Web-based Utility says that the registration for my Internet phone

line has failed.

Go through this checklist until your problem is solved:

•

Make sure your network has an active Internet connection. Try to access the Internet, and check to see if

the Router’s Internet LED is lit. If you do not have a connection, power off your network devices, including

the Router and cable/DSL modem. Wait 30 seconds, and power on the cable/DSL modem first. Then

power on the Router and other network devices.

•

Verify your account information and confirm that the phone line is registered with AT&T.

•

Make sure that your cable or DSL modem is supported by AT&T.

•

If none of the above works, contact AT&T at 1-866-596-8464.

3.

I reset the Router to its factory default settings. How do I configure the settings for my Internet phone

service?

If your Internet phone service account is active, the Router will automatically download its Internet phone

service settings once it is connected to the Internet again. If you do not have an active Internet phone service

account, visit

http://www.att.com/linksys

to sign up for a new account or activate your account. Then

follow the on-screen instructions.

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46

Appendix A: Troubleshooting

Common Problems and Solutions

Wireless-G Broadband Router with 2 Phone Ports

4.

I’m trying to access the Router’s Web-based Utility, but I do not see the login screen. Instead, I see a

screen saying, “404 Forbidden.”

If you are using Windows Explorer, perform the following steps until you see the Web-based Utility’s login

screen (Netscape Navigator will require similar steps):

A.

Click

File

. Make sure

Work Offline

is NOT checked.

B.

Press

CTRL + F5

. This is a hard refresh, which will force Windows Explorer to load new webpages, not

cached ones.

C.

Click

Tools

. Click

Internet Options

. Click the

Security

tab. Click the

Default level

button. Make sure the

security level is Medium or lower. Then click the

OK

button.

5.

I need to set a static IP address on a PC.

The Router, by default, assigns an IP address range of 192.168.15.100 to 192.168.15.150 using the DHCP

server on the Router. To set a static IP address, you can only use the ranges 192.168.15.2 to 192.168.15.99

and 192.168.15.151 to 192.168.15.254. Each PC or network device that uses TCP/IP must have a unique

address to identify itself in a network. If the IP address is not unique to a network, Windows will generate an

IP conflict error message.

You can assign a static IP address to a PC by performing the following steps:

For Windows 98 and Millennium:

A.

Click

Start

,

Setting

, and

Control Panel

. Double-click

Network

.

B.

In

The following network components are installed

box, select the

TCP/IP

-> associated with your

Ethernet adapter. If you only have one Ethernet adapter installed, you will only see one TCP/IP line with no

association to an Ethernet adapter.

Highlight it and click the

Properties

button.

C.

In the

TCP/IP properties

window, select the

IP address

tab, and select

Specify an IP address

. Enter a

unique IP address that is not used by any other computer on the network connected to the Router. You can

only use an IP address in the ranges 192.168.15.2 to 192.168.15.99 and 192.168.15.151 to

192.168.15.254.

Make sure that each IP address is unique for each PC or network device.

D.

Click the

Gateway

tab, and in the

New Gateway

prompt, enter

192.168.15.1

, which is the default IP

address of the Router. Click the

Add

button to accept the entry.

E.

Click the

DNS

tab, and make sure the

DNS Enabled

option is selected. Enter the Host and Domain names

(e.g., John for Host and home for Domain). Enter the DNS entry provided by your ISP. If your ISP has not

provided the DNS IP address, contact your ISP to get that information or go to its website for the

information.

F.

Click the

OK

button in the

TCP/IP properties

window, and click

Close

or the

OK

button for the

Network

window.

G.

Restart the computer when asked.

Page 53 / 86

47

Appendix A: Troubleshooting

Common Problems and Solutions

Wireless-G Broadband Router with 2 Phone Ports

For Windows 2000:

A.

Click

Start

,

Settings

, and

Control Panel

. Double-click

Network and Dial-Up Connections

.

B.

Right-click the

Local Area Connection

that is associated with the Ethernet adapter you are using, and

select the

Properties

option.

C.

In the

Components checked are used by this connection

box, highlight

Internet Protocol (TCP/IP)

, and

click the

Properties

button. Select

Use the following IP address

option.

D.

Enter a unique IP address that is not used by any other computer on the network connected to the Router.

You can only use an IP address in the ranges 192.168.15.2 to 192.168.15.99 and 192.168.15.151 to

192.168.15.254.

E.

Enter the Subnet Mask,

255.255.255.0

.

F.

Enter the Default Gateway,

192.168.15.1

(Router’s default IP address).

G.

Toward the bottom of the window, select

Use the following DNS server addresses

, and enter the

Preferred DNS server and Alternative DNS server (provided by your ISP). Contact your ISP or go on its

website to find the information.

H.

Click the

OK

button in the

Internet Protocol (TCP/IP) Properties

window, and click the

OK

button in the

Local Area Connection Properties

window.

I.

Restart the computer if asked.

For Windows XP:

The following instructions assume you are running Windows XP with the default interface. If you are using the

Classic interface (where the icons and menus look like previous Windows versions), please follow the

instructions for Windows 2000.

A.

Click

Start

and

Control Panel

.

B.

Click the

Network and Internet Connections

icon and then the

Network Connections

icon.

C.

Right-click the

Local Area Connection

that is associated with the Ethernet adapter you are using, and

select the

Properties

option.

D.

In the

This connection uses the following items

box, highlight

Internet Protocol (TCP/IP)

. Click the

Properties

button.

E.

Enter a unique IP address that is not used by any other computer on the network connected to the Router.

You can only use an IP address in the ranges 192.168.15.2 to 192.168.15.99 and 192.168.15.151 to

192.168.15.254.

F.

Enter the Subnet Mask,

255.255.255.0

.

G.

Enter the Default Gateway,

192.168.15.1

(Router’s default IP address).

H.

Toward the bottom of the window, select

Use the following DNS server addresses

, and enter the

Preferred DNS server and Alternative DNS server (provided by your ISP). Contact your ISP or go on its

website to find the information.

I.

Click the

OK

button in the

Internet Protocol (TCP/IP) Properties

window. Click the

OK

button in the

Local

Area Connection Properties

window.

Page 54 / 86

48

Appendix A: Troubleshooting

Common Problems and Solutions

Wireless-G Broadband Router with 2 Phone Ports

6.

I want to test my Internet connection.

A.

Check your TCP/IP settings.

For Windows 98 and Millennium:

Refer to Windows Help for details. Make sure

Obtain IP address automatically

is selected in the settings.

For Windows 2000:

1.

Click

Start

,

Settings

, and

Control Panel

. Double-click

Network and Dial-Up Connections

.

2.

Right-click the

Local Area Connection

that is associated with the Ethernet adapter you are using,

and select the

Properties

option.

3.

In the

Components checked are used by this connection

box, highlight

Internet Protocol (TCP/IP)

,

and click the

Properties

button. Make sure that

Obtain an IP address automatically

and

Obtain

DNS server address automatically

are selected.

4.

Click the

OK

button in the

Internet Protocol (TCP/IP) Properties

window, and click the

OK

button in the

Local Area Connection Properties

window.

5.

Restart the computer if asked.

6.

Click the

OK

button in the

Internet Protocol (TCP/IP) Properties

window, and click the

OK

button in the

Local Area Connection Properties

window.

7.

Restart the computer if asked.

For Windows XP:

The following instructions assume you are running Windows XP with the default interface. If you are using the

Classic interface (where the icons and menus look like previous Windows versions), please follow the

instructions for Windows 2000.

1.

Click

Start

and

Control Panel

.

2.

Click the

Network and Internet Connections

icon and then the

Network Connections

icon.

3.

Right-click the

Local Area Connection

that is associated with the Ethernet adapter you are using,

and select the

Properties

option.

4.

In the

This connection uses the following items

box, highlight

Internet Protocol (TCP/IP)

, and click

the

Properties

button.

Make sure that

Obtain an IP address automatically

and

Obtain DNS server

address automatically

are selected.

Page 55 / 86

49

Appendix A: Troubleshooting

Common Problems and Solutions

Wireless-G Broadband Router with 2 Phone Ports

B.

Open a command prompt.

•

For Windows 98 and Millennium, click

Start

and

Run

. In the

Open

field, type

command

. Press the

Enter

key or click the

OK

button.

•

For Windows 2000 and XP, click

Start

and

Run

. In the

Open

field, type

cmd

. Press the

Enter

key or

click the

OK

button.

C.

In the command prompt, type

ping 192.168.15.1

and press the

Enter

key.

•

If you get a reply, the computer is communicating with the Router.

•

If you do NOT get a reply, check the cable, and make sure

Obtain an IP address automatically

is

selected in the TCP/IP settings for your Ethernet adapter.

D.

In the command prompt, type

ping

followed by your Internet IP address and press the

Enter

key.

The

Internet IP Address can be found in the web interface of the Router. For example, if your Internet IP

address is 1.2.3.4, you would enter

ping 1.2.3.4

and press the

Enter

key.

•

If you get a reply, the computer is connected to the Router.

•

If you do NOT get a reply, try the ping command from a different computer to verify that your original

computer is not the cause of the problem.

E.

In the command prompt, type

ping www.linksys.com

and press the

Enter

key.

•

If you get a reply, the computer is connected to the Internet. If you cannot open a webpage, try the

ping command from a different computer to verify that your original computer is not the cause of the

problem.

•

If you do NOT get a reply, there may be a problem with the connection. Try the ping command from a

different computer to verify that your original computer is not the cause of the problem.

7.

I am not getting an IP address on the Internet with my Internet connection.

A.

Refer to “Problem #6, I want to test my Internet connection” to verify that you have connectivity.

B.

If you need to register the MAC address of your Ethernet adapter with your ISP, please see “Appendix D:

Finding the MAC Address and IP Address for Your Ethernet Adapter.” If you need to clone the MAC address

of your Ethernet adapter onto the Router, see the MAC Address Clone section of “Chapter 5: Configuring

the Router” for details.

C.

Make sure you are using the right Internet settings. Contact your ISP to see if your Internet connection

type is DHCP, Static IP Address, or PPPoE (commonly used by DSL consumers).

Please refer to the Basic

Setup section of “Chapter 5: Configuring the Router” for details on Internet Connection Type settings.

D.

Make sure you use the right cable. Check to see if the Internet LED is solidly lit.

E.

Make sure the cable connecting from your cable or DSL modem is connected to the Router’s Internet port.

Verify that the Status page of the Router’s Web-based Utility shows a valid IP address from your ISP.

F.

Turn off the computer, Router, and cable/DSL modem. Wait 30 seconds, and then turn on the Router,

cable/DSL modem, and computer. Check the Status tab of the Router’s Web-based Utility to see if you get

an IP address.

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