Symptoms

When performing multiple BIG-IP system reboots or host resets via the AOM menu, the AOM (BMC) device can become busy processing interrupts or other signals from the host and the AOM's IPMI main process will restart itself. As a result of this intermittent issue, you might encounter the following symptoms: 1. Showing the AOM Banner on the host serial console (if connected): --- Press <ESC>( for AOM Command Menu. 2. System Event Log entry in the '/var/log/sel' file: 0001 08/30/17 08:00:23 INF BMC boot marker. Note: It is normal to see a 'BMC boot marker' log entry if you power-cycle the device.

Impact

Because this issue is intermittent, there is no way to predict the number of reboots required to expose the issue. It might appear after 10, 50, or 100 reboots, or you might not experience the issue regardless of the number of reboots. Note: If this situation occurs three times, the AOM will force a hard reset of itself by creating a watchdog timeout expiration.

Conditions

Perform multiple BIG-IP reboots or host resets via the AOM menu.

Workaround

There is no workaround to this issue at this time.

Fix Information

Improved handling of usb/scsi/hdisk commands when booting BIG-IP REL7 system have eliminated this issue.

Behavior Change