Introduction; General Guidelines; Collecting Log And Operating Information - HP FlexFabric 12900 series Troubleshooting Manual

Introduction

This document provides information about troubleshooting common software and hardware problems
with HP FlexFabric 12900 switches.
This document applies to Release 10xx and Release 1 1xx.

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 HP FlexFabric 12900 switches, 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
Physical evidence of failure:

−
−
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-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 is disabled, you must use the info-center enable
command to enable the feature for collecting log messages.
Table 1 shows the types of files that the system uses to store operating log and status information. You can
export these files by using FTP, or TFTP.
These files are stored on the active MPU (in standalone mode) or global active MPU (in IRF mode).
Multiple MPUs will have log files if active/standby or master/subordinate switchovers have occurred.
You must collect log files from all these MPUs. 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 MPU, and include
their chassis and slot numbers in the folder names.
"Collecting log and operating
Photos of the hardware.
Status of the card, power, and fan status LEDs.
information."
1