Cisco 2524 - Router - EN Troubleshooting Manual

A P P E N D I X

Chassis/Module

Router chassis

B

Troubleshooting the Cisco 2524

and Cisco 2525 Routers

This appendix describes how to troubleshoot the Cisco 2524 and Cisco 2525 routers by

referring to the LEDs on the rear panel of the chassis (see Figure 1-2 and Figure 1-3) and

on the network processor modules (see Figure 1-4 through Figure 1-9).

The LEDs indicate the current operating condition of your router. You can observe the

LEDs, note any fault condition that the router is encountering, and then contact your system

administrator or a customer service representative, if necessary. Table B-1 describes the

LEDs on the router chassis and WAN modules.

Table B-1

LEDs

LED

Power

Activity

(Ethernet/

1

Token Ring

)

State

Description

On steadily

Power is being supplied to the router.

Off

Power is not reaching the router. Verify that the power

supply is plugged into the wall receptacle, and that the

cable from the power supply to the router is connected.

Flickering

The Ethernet/Token Ring LAN connection is

transmitting and receiving data normally.

Off

The Ethernet/Token Ring LAN connection is not

transmitting or receiving data. Check the

Ethernet/Token Ring cable connection.

Troubleshooting the Cisco 2524 and Cisco 2525 Routers B-1