Reference Manual for the Model CG814M Wireless Cable Modem Gateway

Managing Your Network

5-9

Running Diagnostic Utilities

The CG814M Gateway has a diagnostics feature. You can use the diagnostics menu to test

connectivity to PC using the Ping command:

From the Main Menu of the browser interface, under the Maintenance heading, select the

Diagnostics menu, shown in

Figure 5-5

.

Figure 5-5: Diagnostics menu

To perform a Ping test

1.

In the Ping Target section, enter the IP address of the PC you would like to ping.

2.

If you would like to specify additional details, you can set the Ping Size, No. of Ping and Ping

Interval.

3.

Click Start Test.

4.

Click REFRESH to see the results of the Ping test.

Downloaded from

www.Manualslib.com

manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

5-10

Managing Your Network

Downloaded from

www.Manualslib.com

manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

Troubleshooting

6-1

Chapter 6

Troubleshooting

This chapter gives information about troubleshooting your CG814M Wireless Cable Modem

Gateway. For the common problems listed, go to the section indicated.

•

Is the gateway on?

•

Have I connected the gateway correctly?

Go to

“Basic Functions“ on page 6-1

.

•

I can’t access the gateway’s configuration with my browser.

Go to

“Troubleshooting the Web Configuration Interface“ on page 6-3

.

•

I’ve configured the gateway but I can’t access the Internet.

Go to

“Troubleshooting the ISP Connection“ on page 6-4

.

•

I can’t remember the gateway’s configuration password.

•

I want to clear the configuration and start over again.

Go to

“Erasing Configuration“ on page 5-8

.

Basic Functions

After you turn on power to the gateway, the following sequence of events should occur:

1.

When power is first applied, verify that the Power LED is on.

2.

Verify that the numbered ethernet LEDs come on momentarily.

3.

After approximately 30 seconds, verify that:

c.

The Local port Link LEDs are lit for any local ports that are connected.

d.

The Test LED is not lit.

Downloaded from

www.Manualslib.com

manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

6-2

Troubleshooting

e.

The Internet Link port LED is lit.

If any of these conditions does not occur, refer to the appropriate following section.

Power LED Not On

If the Power and other LEDs are off when your gateway is turned on:

•

Make sure that the power cord is properly connected to your gateway and that the power

supply adapter is properly connected to a functioning power outlet.

•

Check that you are using the 12VDC power adapter supplied by NETGEAR for this product.

If the error persists, you have a hardware problem and should contact technical support.

Test LED Stays On

If the Test LED stays on continuously, there is a fault within the gateway.

If you experience problems with the Test LED:

•

Cycle the power to see if the gateway recovers and the LED goes off

•

If all LEDs including the Test LED are still on one minute after power up, clear the gateway’s

configuration to factory defaults. This will set the gateway’s IP address to 192.168.0.1. This

procedure is explained in

“Erasing Configuration“ on page 5-8

.

If the error persists, you might have a hardware problem and should contact technical support.

Local Link LEDs Not On

If the Local Port Link LEDs do not light when the Ethernet connection is made, check the

following:

•

Make sure that the Ethernet cable connections are secure at the gateway and at the hub or PC.

•

Make sure that power is turned on to the connected hub or PC.

•

Be sure you are using the correct cable:

—

When connecting the gateway’s Internet port to a cable or DSL modem, use the cable that

was supplied with the cable or DSL modem. This cable could be a standard

straight-through Ethernet cable or an Ethernet crossover cable.

Downloaded from

www.Manualslib.com

manuals search engine

Reference Manual for the Model CG814M Wireless Cable Modem Gateway

Troubleshooting

6-3

Cable Link LED Not On

If the Cable Link LED does not light when connected to your cable television cable, check the

following:

•

Make sure that the coaxial cable connections are secure at the gateway and at the wall jack.

•

Make sure that your cable internet service has been provisioned by yor cable service provider.

Your provider should verify that the signal quality is good enough for cable modem service.

•

Remove any excessive splitters you may have on your cable line. It may be necessary to run a

“home run” back to the point where the cable enters your home.

Troubleshooting the Web Configuration Interface

If you are unable to access the gateway’s Web Configuration interface from a PC on your local

network, check the following:

•

Check the Ethernet connection between the PC and the gateway as described in the previous

section.

•

Make sure your PC’s IP address is on the same subnet as the gateway. If you are using the

recommended addressing scheme, your PC’s address should be in the range of 192.168.0.10 to

192.168.0.254. Refer to

“Verifying TCP/IP Properties“ on page C-5

or

“Configuring the

Macintosh for TCP/IP Networking“ on page C-6

to find your PC’s IP address. Follow the

instructions in

Appendix C

to configure your PC.

Note:

If your PC’s IP address is shown as 169.254.x.x:

Recent versions of Windows and MacOS will generate and assign an IP address if the

computer cannot reach a DHCP server. These auto-generated addresses are in the range of

169.254.x.x. If your IP address is in this range, check the connection from the PC to the

gateway and reboot your PC.

•

If your gateway’s IP address has been changed and you don’t know the current IP address,

clear the gateway’s configuration to factory defaults. This will set the gateway’s IP address to

192.168.0.1. This procedure is explained in

“Erasing Configuration“ on page 5-8

.

•

Make sure your browser has Java, JavaScript, or ActiveX enabled. If you are using Internet

Explorer, click Refresh to be sure the Java applet is loaded.

•

Try quitting the browser and launching it again.

Downloaded from

www.Manualslib.com

manuals search engine