1
Introduction
This document provides information about troubleshooting common software and hardware issues
with S6890 Switch Series.
This document is not restricted to specific software or hardware versions.
General guidelines
IMPORTANT:
To prevent an issue 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 S6890 switches, follow these general guidelines:
•
To help identify the cause of the issue, 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 LEDs.
Steps you have taken, such as reconfiguration, cable swapping, and reboot.
Output from the commands executed during the troubleshooting process.
•
To ensure safety, wear an ESD wrist strap when you replace or maintain a hardware
component.
Collecting log and operating information
IMPORTANT:
By default, the information center is enabled. If the feature is 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.
In an IRF system, these files are stored on the master device. Multiple MPUs will have log files if
master/subordinate switchovers have occurred. You must collect log files from all these devices. To
more easily locate log information, use a consistent rule to categorize and name files. For example,
save log files to a separate folder for each member device, and include their slot numbers in the
folder names.
Table 1 Log and operating information
Category
File name format
Content
Common log
logfileX.log
Command execution and operational log messages.
Diagnostic log
diagfileX.log
Diagnostic log messages about device operation, including the
