Cisco Cisco IOS Software Release 12.0(22)S

To display Protocol Independent Multicast (PIM) packets received and sent, and to display PIM-related 
events, use the debug ip pim command in privileged EXEC mode. To disable debugging output, use the 
no form of this command.

debug ip pim [vrf vrf-name] [group | df [rp-address]] [hello]

no debug ip pim [vrf vrf-name] [group | df [rp-address]] [hello]

All PIM packets are displayed.

Privileged EXEC

PIM uses Internet Group Management Protocol (IGMP) packets to communicate with routers and 
advertise reachability information.

Use this command with the debug ip igmp and debug ip mrouting commands to display additional 
multicast routing information.

The following is sample output from the debug ip pim command:

Router# debug ip pim 224.2.0.1 

 

PIM: Received Join/Prune on Ethernet1 from 172.16.37.33 

PIM: Received Join/Prune on Ethernet1 from 172.16.37.33 

PIM: Received Join/Prune on Tunnel0 from 10.3.84.1 

(Optional) Supports the Multicast Virtual Private Network (VPN) routing 
and forwarding (VRF) instance.

(Optional) Name assigned to the VRF.

(Optional) The group name or address to monitor the packet activity of a 
single group.

(Optional) When bidirectional PIM is used, displays all designated 
forwarder (DF) election messages.

(Optional) The rendezvous point IP address.

(Optional) Enables you to send PIM hello messages to be sent every few 
milliseconds.

10.2

This command was introduced.

12.1(2)T

The df keyword was added.

12.0(22)S

The vrf keyword, vrf-name argument, and hello keyword were added.