System information

Troubleshooting Hardware and Booting Problems 3-29

Cisco 2000 Series Startup

Table 3-4 Hardware: Cisco 2500 Series Startup Problems and Solutions

Cisco 2000 Series Startup

When you start up a Cisco 2000 series router, the following should occur:

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

• The fans should be operating.

When the system has initialized successfully, the system banner should be displayed on the console

screen.

Table 3-5 outlines the possible Cisco 2000 series startup problem and describes solutions to that

problem.

Table 3-5 Hardware: Cisco 2000 Series Startup Problem and Solutions

Possible Problem Area Solution

Power and cooling

subsystems

Step 1 If the Power LED is off, make sure the power supply is plugged in to the

wall receptacle and that the cable from the power supply to the router is

connected.

Step 2 If the system shuts down after being on a short time, there might have

been a thermal-induced shutdown caused by a faulty fan, or the power

to the system might have been lost. Ensure that the system is receiving

power and that the chassis intake and exhaust vents are clear.

Step 3 If the system does not boot up but LEDs are on, check the 12V power

supply.

Step 4 If the system partially boots but LEDs are not on, check the 5V power

supply.

Network interfaces

and cables

Step 1 If a network interface is not recognized by the system, check the

interface cable connection and the LED on the network interface.

Step 2 If a network interface is recognized but will not initialize, check the

interface cable connection.

Step 3 If the system will not boot properly or constantly or intermittently

reboots, there might be a processor or software problem. Make sure that

DRAM SIMM modules are seated properly.

Step 4 If the system boots but the console screen is frozen, check the external

console connection and verify that the console baud rate is correct.

Step 5 If the system powers on and boots with a particular interface

disconnected, check the network interface connection.