Troubleshooting

Using the Event Log for Troubleshooting Switch Problems

Example of Event Counter Operation

Suppose the switch detects the following after a reboot:

Three duplicate instances of the PIM “Send error” during the first log throttle period for this event

Five more instances of the same Send error during the second log throttle period for this event

Four instances of the same Send error during the third log throttle period for this event

In this case, the duplicate message would appear three times in the Event Log (once for each log throttle period for the event being described), and the Duplicate Message Counter would increment as shown in table C-4. (The same operation would apply for messages sent to any configured SNMP trap receivers.)

Table C-4. How the Duplicate Message Counter Increments

Instances

Instances

Instances

Duplicate

During 1st Log

During 2nd Log

During 3rd Log

Message

Throttle Period

Throttle Period

Throttle Period

Counter*

 

 

 

 

3

 

 

1

 

 

 

 

 

5

 

4

 

 

 

 

 

 

4

9

 

 

 

 

*This value always comprises the first instance of the duplicate message in the current log throttle period plus all previous occurrences of the duplicate message occurring since the switch last rebooted.

C-36