1
Introduction
This document provides information about troubleshooting common software and hardware
problems with H3C MSR routers.
The MSR5600 routers are distributed devices. All other router series are centralized devices.
General guidelines
IMPORTANT:
To prevent a problem from causing loss of configuration, save the configuration each time you finish
configuring a feature. For configuration recovery, regularly back up the configuration to a remote
server.
When you troubleshoot H3C MSR routers, follow these general guidelines:
•
To help identify the cause of the problem, collect system and configuration information,
including:
{
Symptom, time of failure, and configuration.
{
Network topology information, including the network diagram, port connections, and points
of failure.
{
Log messages and diagnostic information. For more information about collecting this
information, see "
Collecting log and operating information
{
Physical evidence of failure:
−
Photos of the hardware.
−
Status of the card, power, and fan status LEDs.
{
Steps you have taken, such as reconfiguration, cable swapping, and rebooting.
{
Output from the commands executed during the troubleshooting process.
•
To ensure safety, wear an ESD-preventive wrist strap when you replace or maintain a hardware
component.
•
If hardware replacement is required, use the release notes to verify the hardware and software
compatibility.
Collecting log and operating information
IMPORTANT:
By default, the information center is enabled. If the feature has been disabled, you must use the
info-center enable
command to enable the feature for collecting log messages.
shows the types of files that the system uses to store operating log and status information.
You can export these files by using FTP, TFTP, or USB. To more easily locate log information, use a
consistent rule to categorize and name files. For example, save log information files to a separate
folder for each MPU on a distributed device, and include their chassis and slot numbers in the folder
names.