Administrator Guide

ip multicast-routing
Related Conguration Tasks
The following are related PIM-SM conguration tasks.
• Conguring S,G Expiry Timers
• Conguring a Static Rendezvous Point
• Conguring a Designated Router
• Creating Multicast Boundaries and Domains
Enable PIM-SM
You must enable PIM-SM on each participating interface.
1. Enable multicast routing on the system.
CONFIGURATION mode
ip multicast-routing
2. Enable PIM-Sparse mode.
INTERFACE mode
ip pim sparse-mode
Example of Viewing PIM-SM Interfaces
Example of Viewing PIM Neighbors
Example of Viewing the PIM Multicast Routing Table
To display which interfaces are enabled with PIM-SM, use the show ip pim interface command from EXEC Privilege mode.
Dell#show ip pim interface
Address Interface VIFindex Ver/ Nbr Query DR DR
Mode Count Intvl Prio
189.87.5.6 Gi 4/11 0x2 v2/S 1 30 1 127.87.5.6
189.87.3.2 Gi 4/12 0x3 v2/S 1 30 1 127.87.3.5
189.87.31.6 Gi 7/11 0x0 v2/S 0 30 1 127.87.31.6
189.87.50.6 Gi 7/13 0x4 v2/S 1 30 1 127.87.50.6
Dell#
NOTE: You can inuence the selection of the Rendezvous Point by enabling PIM-Sparse mode on a Loopback interface
and assigning a low IP address.
To display PIM neighbors for each interface, use the show ip pim neighbor command EXEC Privilege mode.
Dell#show ip pim neighbor
Neighbor Interface Uptime/Expires Ver DR
Address Prio/Mode
127.87.5.5 Gi 4/11 01:44:59/00:01:16 v2 1 / S
127.87.3.5 Gi 4/12 01:45:00/00:01:16 v2 1 / DR
127.87.50.5 Gi 7/13 00:03:08/00:01:37 v2 1 / S
Dell#
To display the PIM routing table, use the show ip pim tib command from EXEC privilege mode.
Dell#show ip pim tib
PIM Multicast Routing Table
Flags: D - Dense, S - Sparse, C - Connected, L - Local, P - Pruned,
R - RP-bit set, F - Register flag, T - SPT-bit set, J - Join SPT,
Timers: Uptime/Expires
586
PIM Sparse-Mode (PIM-SM)