Configures PIM in Dense mode on an interface.

ip pim [ passive ]
no ip pim [ passive ]

PIM is not enabled.

passive
Specifies PIM passive mode on the interface.

Interface configuration mode

The no form of this command disables PIM.

You must enable PIM globally before you enable it on an interface.

You must enable PIM on an interface before you can configure PIM passive on it.

Support for the ip pim passive command is implemented at Layer 3 interface (Ethernet or virtual Ethernet) level.

Because the loopback interfaces are never used to form PIM neighbors, the ip pim passive command is not supported on loopback interfaces.

The sent and received statistics of a PIM Hello message are not changed for an interface while it is configured as PIM passive.

This example enables PIM globally, then enables it on interface 3. 

Device(config)# router pim
Device(config-pim-router)# interface ethernet 1/1/3
Device(config-if-e10000-1/1/3)# ip address 207.95.5.1/24
Device(config-if-e10000-1/1/3)# ip pim

This example enables PIM passive on an interface. 

Device(config)# router pim
device(config-pim-router)#exit
Device(config)#interface ethernet 2
Device(config-if-e1000-2)#ip pim
Device(config-if-e1000-2)#ip pim passive
Device(config-if-e1000-2)#exit
Device(config)#interface ve 2
Device(config-vif-2)#ip pim-sparse
Device(config-vif-2)#ip pim passive
Device(config-vif-2)#exit