System information

Troubleshooting Hardware and Booting Problems 3-25

Cisco 4000 and Cisco 3000 Series Startup

When you start up a Cisco 4000 or a Cisco 3000 series router, the following should occur:

• The System OK LED should come on and stay on as long as power is supplied.

• The fans should be operating.

Processor subsystem Step 1 Check to see whether the RP

LEDs come on when system power is

turned on.

Step 2 If none of the RP LEDs come on, make sure that both the fan and power

supply are functioning properly.

Step 3 If the power supply and fans appear operational but none of the RP

LEDs are on, an improperly connected RP, SP

(or SSP

), or interface

processor might have hung the bus.

Step 4 If the SP (or SSP) Enabled LED is off but any of the RP LEDs are on,

make sure the SP (or SSP) is seated in its slot properly.

Step 5 Check to see whether the Boot Error LED is on. If the LED is on, the

system software is unable to start up. If you have a spare RP with the

system software ROMs installed, replace the installed RP with the spare

to see whether the system will boot.

Step 6 Check to see whether the RP CPU Halt LED is on. If it is, the system

has detected a processor hardware failure. Contact a technical support

representative for more information.

Step 7 Check to see whether all interface processor Enabled LEDs are on.

Step 8 If the Enabled LED on an individual interface processor is off, make

sure that the interface processor has not pulled away from the

backplane.

1 RP = Route Processor

2 SP = Switch Processor

3 SSP = Silicon Switch Processor

Possible Problem Area Solution