Command:

debug isis spf-events


Mode:

Router#


Syntax:

debug isis spf-events

no debug isis spf-events

 

Syntax Description:

This command has no arguments or keywords.

 

Command Description:

To display a log of significant events during an Intermediate System-to-Intermediate System (IS-IS) shortest-path first (SPF) computation, use the debug isis spf-events command in privileged EXEC mode. To disable debugging output, use the no form of this command.

This command displays information about significant events that occur during SPF-related processing.


Example:

The following example displays significant events during an IS-IS SPF computation:

Router# debug isis spf-events
ISIS-Spf: Compute L2 IPv6 SPT
ISIS-Spf: Move 0000.0000.1111.00-00 to PATHS, metric 0
ISIS-Spf: Add 0000.0000.2222.01-00 to TENT, metric 10
ISIS-Spf: Move 0000.0000.2222.01-00 to PATHS, metric 10
ISIS-Spf: considering adj to 0000.0000.2222 (Ethernet3/1) metric 10, level 2, circuit 3, adj 3
ISIS-Spf: (accepted)
ISIS-Spf: Add 0000.0000.2222.00-00 to TENT, metric 10
ISIS-Spf: Next hop 0000.0000.2222 (Ethernet3/1)
ISIS-Spf: Move 0000.0000.2222.00-00 to PATHS, metric 10
ISIS-Spf: Add 0000.0000.2222.02-00 to TENT, metric 20
ISIS-Spf: Next hop 0000.0000.2222 (Ethernet3/1)
ISIS-Spf: Move 0000.0000.2222.02-00 to PATHS, metric 20
ISIS-Spf: Add 0000.0000.3333.00-00 to TENT, metric 20
ISIS-Spf: Next hop 0000.0000.2222 (Ethernet3/1)
ISIS-Spf: Move 0000.0000.3333.00-00 to PATHS, metric 20


Misconceptions:

None.


Related Commands:

None.


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