Configure PIM-SM to enable or disable PIM-SM globally on the switch and change default global parameters.

Note
PIM-SM
PIM-SSM
Simplified vIST
PIM-SM is the default mode so you do not need to configure the PIM mode.
enable
configure terminal
ip pim enable
ip pim bootstrap-period <5–32757>
ip pim disc-data-timeout <5–65535>
ip pim fast-joinprune
ip pim fwd-cache-timeout <10–86400>
ip pim join-prune-interval <1–18724>
ip pim register-suppression-timeout <6–65535>
ip pim rp-c-adv-timeout <5–26214>
no pim enable
ip pim spt-infinite-threshold
ip pim enable
ip pim unicast-route-change-timeout <2–65535>
show ip pim
Verify the configuration changes:
Switch:1#show ip pim
==========================================================================================
                        Pim General Group - GlobalRouter
==========================================================================================
PimStat               : disabled
Mode                  : sparse
StaticRP              : disabled
FastJoinPrune         : disabled
SptInfiniteThreshold  : enabled
BootstrapPeriod       : 60
CRPAdvTimeout         : 60
DiscDataTimeout       : 60
FwdCacheTimeout       : 210
RegSupprTimeout       : 60
UniRouteChangeTimeout : 5
JoinPruneInt          : 60