Reference Guide

CONFIGURATION mode
ip multicast-routing
Related Configuration Tasks
The following are related PIM-SM configuration tasks.
• Configuring S,G Expiry Timers
• Configuring a Static Rendezvous Point
• Configuring 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
To display which interfaces are enabled with PIM-SM, use the show ip pim interface command from EXEC
Privilege mode.
Example of Viewing PIM-SM Interfaces
FTOS#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
FTOS#
NOTE: You can influence 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.
Example of Viewing PIM Neighbors
FTOS#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
FTOS#
To display the PIM routing table, use the show ip pim tib command from EXEC privilege mode.
Example of Viewing the PIM Multicast Routing Table
FTOS#show ip pim tib
PIM Multicast Routing Table
515