Cisco 10000 Series Troubleshooting Guide

3-3
Cisco 10000 Series Router Troubleshooting Guide
OL-0439-02
Chapter 3 Troubleshooting PREs
Troubleshooting PREs
Table 3-1 lists the PRE fault indications and recommended actions. The information contained in the
table is based on the assumption that you have a nonredundant configuration.
Ethernet Connection Problems
If the management Ethernet connection on the PRE fails to work properly, and the corresponding Link
LED is not lit (steady green):
• Visually check that an Ethernet cable is connected to the correct Ethernet port on the
Cisco10000series router.
• Verify that you are using the correct type of cable for a 100BASE-T Ethernet.
• Check to see if the cable is bad or broken.
• Make sure the PRE module booted up properly by checking the Status LED on its faceplate. This
LED should be steady green. If necessary, remove and reinsert the module and boot it up again.
Table 3-1 PRE Module Fault Indications and Recommended Action
Fault Steps to Take
STATUS LED is not lit
1. Check LEDs on other modules and cards. If none are lit, refer to
Table 2-1 or Table 2-3 depending upon the PEM type in your chassis.
2. If LEDs on other modules and cards are lit, remove the card from its
slot and check for bent or broken pins on the backplane. Return the card
to its slot and screw it firmly into place.
3. Replace the card.
4. If the problem persists, contact the Cisco TAC.
FAIL LED is yellow,
indicating that the PRE
failed
1. Reinsert the PRE.
2. Insert a new PRE.
3. If the problem persists, contact the Cisco TAC.
The PRE initializes, but
you cannot establish a
console connection
1. Ensure that the terminal settings are properly set.
2. If you still cannot connect, check the console cable. Is it firmly
connected? Is it the correct type of cable with proper connectors?
3. If the cable checks out and you cannot establish a console or Telnet
session, reinsert the PRE module. If the problem persists, replace
the PRE.
4. Enter show log to review console messages recorded in the system log.
Card cannot be fully
inserted into its slot
Make sure that you are using slot 0A or 0B for the PRE module.
An alarm LED is lit
1. Enter the show facility-alarm status command and examine the output
to determine which system component raised the alarm.
2. Troubleshoot using a procedure appropriate to the module or FRU
responsible for the alarm. Refer to the following sections for
information on interpreting alarms:
• OC-12 POS Line Card Alarms and Error Messages, page 5-1
• Channelized T3 Line Card Alarms and Error Messages, page 5-6

Cisco 10000 Series Specifications

General

Brand	Cisco
Model	10000 Series
Category	Network Router
Language	English