Technical data

14 Network OS Message Reference
53-1002489-01
Responding to a system message
1
• Assess impact and urgency:
- Is the switch down?
- Is it a standalone switch?
- How large is the fabric?
- Is the fabric redundant?
• Execute the show logging raslog command on each logical switch.
• Execute the copy support command.
• Document the sequence of events by answering the following questions:
- What happened just before the problem?
- Is the problem repeatable?
- If so, what are the steps to produce the problem?
- What configuration was in place when the problem occurred?
• Did a failover occur?
• Was security enabled?
• Was POST enabled?
• Are serial port (console ) logs available?
• What and when were the last actions or changes made to the system?
Support
Network OS creates several files that can help support personnel troubleshoot and diagnose a
problem. This section describes those files and how to access and save the information for support
personnel.
Panic dump, core dump, and FFDC data files
The Network OS creates panic dump files, core files, and FFDC data files when there are problems
in the Network OS kernel. You can view files using the show support command. These files can
build up in the persistent storage and may need to be periodically deleted or downloaded using the
copy support command.
The software watchdog (SWD) process is responsible for monitoring daemons critical to the
function of a healthy switch. The SWD holds a list of critical daemons that ping the SWD periodically
at a predetermined interval defined for each daemon.
If a daemon fails to ping the SWD within the defined interval, or if the daemon terminates
unexpectedly, then the SWD dumps information to the panic dump files, which helps to diagnose
the root cause of the unexpected failure.
Execute the show support command to view these files or the copy support ftp command to send
them to a host workstation using FTP. The panic dump files, core files, and FFDC data files are
intended for support personnel use only.