Configuring Module Recovery--Modular Switches Only

You can configure the MSMs/MMs or I/O modules installed in BlackDiamond X8 and 8800 series switches to take no action, take ports offline in response to errors, automatically reset, shutdown, or if dual MSMs/MMs are installed failover to the other MSM/MM if the switch detects a hardware fault. This enhanced level of recovery detects faults in the ASICs as well as packet buses.

Configure module recovery with the command:
configure sys-recovery-level slot [all | slot_number] [none | reset | shutdown]
Where the following is true:
- none—Configures the MSM/MM or I/O module to maintain its current state regardless of the detected fault. The offending MSM/MM or I/O module is not reset. ExtremeXOS logs fault and error messages to the syslog and notifies you that the errors are ignored. This does not guarantee that the module remains operational; however, the switch does not reboot the module.
  Note
  When the sys-recovery-level is set to none, running msm-failover does not reboot the current MSM. However, for BlackDiamond X8 and 8800 series switches, the MSM/MM modules are rebooted.
- reset—Configures the offending MSM/MM or I/O module to reset upon fault detection. ExtremeXOS logs fault, error, system reset, and system reboot messages to the syslog.
- shutdown—Configures the switch to shut down all slots/modules configured for shutdown upon fault detection. On the modules configured for shutdown, all ports in the slot are taken offline in response to the reported errors; however, the MSMs/MMs remain operational for debugging purposes only. You must save the configuration, using the save configuration command, for it to take effect. ExtremeXOS logs fault, error, system reset, system reboot, and system shutdown messages to the syslog.
The default setting is reset.

Depending on your configuration, the switch resets the offending MSM/MM or I/O module if a hardware fault detection occurs. An offending MSM/MM is reset any number of times and is not permanently taken offline. On BlackDiamond X8 and 8800 series switches, an offending I/O module is reset a maximum of five times. After the maximum number of resets, the I/O module is permanently taken offline. For more information, see Module Recovery Actions--BlackDiamond 8800 Series Switches and BlackDiamond X8 Series Switches Only.
You can configure how ExtremeXOS handles a detected fault based on the configuration of the configure sys-recovery-level slot [all | slot_number] [none | reset | shutdown] command.
To configure how ExtremeXOS handles faults, use the configure sys-health-check all level [normal | strict] command.

For detailed information about this command, see the appropriate ExtremeXOS User Guide volume.
To view the system health check settings on the switch, use the show switch command as described in Displaying the System Health Check Setting--All Platforms.

Published March 2020prev | next

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