Cisco Cisco IOS Software Release 12.0(22)S

To display the last 15 triggered multicast Reverse Path Forwarding (RPF) check events, use the show 
ip rpf events command in EXEC mode.

This command has no arguments or keywords.

EXEC

Use this command to determine the most recent triggered multicast RPF check events.

The following is sample output from the show ip rpf events command: 

router# show ip rpf events

Last 15 triggered multicast RPF check events

RPF backoff delay: 500 msec

RPF maximum delay: 5 sec

DATE/TIME             BACKOFF    PROTOCOL   EVENT         RPF CHANGES

Mar 7 00:17:07.244    500 msec   Static     Route UP        0

Mar 7 00:16:55.082    500 msec   BGP        Route UP        0

Mar 7 00:16:43.880    500 msec   ISIS       Route UP        0

Mar 7 00:16:32.692    500 msec   ISIS       Route UP        0

Mar 7 00:16:19.712    1000 sec   Static     Route UP        0

Mar 7 00:16:18.212    500 msec   Connected  Route UP        0

Mar 7 00:16:13.140    500 msec   Static     Route UP        0

Mar 7 00:16:08.160    500 msec   Connected  Route UP        0

The following is sample output from the show ip rpf events command when the ip multicast rpf 
backoff command is used with the disable keyword, disabling the triggered RPF check function:

Router# show ip rpf events

Last 15 triggered multicast RPF check events

Note:Triggered RPF disabled!

RPF backoff delay:50 msec

RPF maximum delay:2 sec

DATE/TIME             BACKOFF    PROTOCOL   EVENT         RPF CHANGES

Sep 4 06:25:31.707    500 msec   Connected  Route UP        0

Sep 4 06:25:30.099    500 msec   Connected  Route UP        0

12.0(22)S

This command was introduced.