Installation guide

5-14
Cisco 6260 Hardware Installation Guide
OL-2365-01
Chapter 5 Troubleshooting
FRU-Specific Problems
5.5.4 I/O Module Problems
If you need to remove or replace an I/O module as part of the troubleshooting steps below, see Chapter 6,
“Upgrading and Maintaining the Cisco 6260 System,” for instructions.
Table 5-6 I/O Module Problems
Symptom Steps to Take
A trunk port fails to come up. See the “System-Wide Problems” section on page 5-3.
A subtending port fails to
come up.
See the “System-Wide Problems” section on page 5-3.
An alarm relay or BITS
circuit fails.
1. Check the connection at the wire-wrap connector on the I/O module. See Table C-1
on page C-3 for the pin assignments of the wire-wrap connector.
2. Check the connection at the other end of the circuit.
3. For a BITS problem, troubleshoot the E1 line at the other end of the circuit.
4. Replace the I/O module (except in the case of a circuit breaker alarm problem).
This message appears on the
console or in the system log file:
00:00:28:%C6100-4-COOKIE:
Corrupt or missing MAC
address cookie using random
base 007e.eb7d.e700
1. Make sure the software release running on your system is compatible with the
hardware. The Cisco 6260 requires Cisco IOS Release 12.1(4)DA or greater.
2. Enter the command show hardware chassis. In the resulting display, look for data
from the I/O module EEPROM. If the system can read the contents of the EEPROM,
the I/O module is likely to be healthy.
3. If the I/O module is missing, install it.
4. If the I/O module is present, reseat it. First, turn off system power. Use a Phillips-head
screwdriver to unfasten the screws that secure the I/O module cover, and pull the card
off the connectors. Push it firmly back into place and tighten the screws.
5. If the problem persists, replace the I/O module.