Troubleshooting Flowchart; Solution - HP FlexFabric 12900 series Troubleshooting Manual

Troubleshooting flowchart

Figure 22 Troubleshooting IRF split
IRF fabric splits
IRF physical
interfaces down?
No
LPU that has IRF
links rebooted?
No
Member chassis
rebooted?
No
Contact the support

Solution

To resolve the problem:
1. Verify that the IRF physical interfaces are operating correctly:
a. Execute the display trapbuffer command or view system logs to check for physical IRF link
down events that occurred around the split time.
b. If the split followed an IRF link down event, execute the display interface command to check
port statistics for CRC errors.
c. If transceiver modules and fibers are used, execute the display transceiver diagnosis command.
Make sure the transmit and receive power has not exceeded the power specifications of the
fiber module.
2. Remove hardware problems that might cause recurring IRF split events:
a. Execute the display version command to identify the uptime of MPUs and LPUs that have IRF
links.
b. Compare the uptime of MPUs and LPUs to determine whether a member chassis or LPU had
rebooted before the IRF split.
c. If the IRF split is caused by a chassis or LPU reboot, perform one of the following tasks:
−
−
Yes
Identify the cause and
resolve the problem
Yes
Identify the cause and
resolve the problem
Yes
Identify the cause and
resolve the problem
If the split is caused by recurring LPU reboots, use the methods described in
failure" to resolve the problem.
If the split is caused by a chassis reboot, use the methods described in
to resolve the problem.
Resolved?
Resolved?
Resolved?
55
Yes
No
Yes
No
Yes
No
End
"LPU reboot
"MPU reboot failure"