Perform an SFM walk to identify the SFM at fault.
If the MLX is not physically accessible, "power-off snm <SFM_SLOT_#>" and "power-on snm <SFM_SLOT_#>" can be used in place of physically reseating SFMs to identify the SFM at fault. However with "power-off snm <SFM_SLOT_#>" and "power-on snm <SFM_SLOT_#>", it is not possible to identify whether poor seating could be at fault.
- Examine the interval between messages of concern to identify the maximum interval.
- Physically remove SFM1.
- Wait at least twice the previously identified maximum message interval.
- If the messages reoccur during that time, reinsert the SFM and repeat the procedure with each of the other SFMs.
- If the messages do not reoccur while a certain SFM is removed, reinsert the SFM.
- If the messages reoccur with the SFM reinserted, a hardware fault in the SFM that had been removed or its slot can be suspected as a cause of the message. The next step is to replace the SFM.
- If messages do not reoccur after reinserting the SFM, poor seating of the SFM can be considered as the cause of the health monitoring messages.