Troubleshooting

Diagnostic Tests

 

Test Router’s Console Port:

 

1.

Detach the console cable from the router.

 

2.

Attach the console port’s loopback connector to the router. (Refer to

 

 

“Loopback Connectors” on page A-20).

 

3.

Press the Reset button on the back of the router.

 

 

C a u t i o n

Resetting the router causes bridging and routing tables to be reset.

 

4.

If the Fault LED lights within one to three minutes and while the

 

 

Self-test LED is still lit, the router is faulty and must be replaced.

 

5.

To resume after testing, remove the loopback connector and

 

 

reconnect the console cable to the console port. Look for the line of

 

 

text on your console that indicates waiting for speed sensing; then

 

 

press [Return] to display the copyright screen or the Main menu screen.

 

 

If neither of these screens appears, press [Return] again. If pressing

 

 

[Return] four or five times does not display either the copyright or Main

 

 

menu screen, then go on to ‘‘Check the Configuration’’, below.

Check the Configuration

If none of the above procedures provides console access, and you suspect that a corrupted configuration rather than the terminal connection is a possible cause, then you may need to clear the configuration. (Refer “To Clear the Router” on page 2-17.)

3-14