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.
Dell#show ip pim interface
Address Interface VIFindex Ver/ Nbr Query DR DR
Mode Count Intvl Prio
189.87.5.6 Te 0/11 0x2 v2/S 1 30 1 127.87.5.6
189.87.3.2 Te 0/12 0x3 v2/S 1 30 1 127.87.3.5
189.87.31.6 Te 1/11 0x0 v2/S 0 30 1 127.87.31.6
189.87.50.6 Te 1/13 0x4 v2/S 1 30 1 127.87.50.6
Dell#
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.
Dell#show ip pim neighbor
Neighbor Interface Uptime/Expires Ver DR
Address Prio/Mode
127.87.5.5 Te 0/11 01:44:59/00:01:16 v2 1 / S
127.87.3.5 Te 0/12 01:45:00/00:01:16 v2 1 / DR
127.87.50.5 Te 1/13 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
Interface state: Interface, next-Hop, State/Mode
(*, 192.1.2.1), uptime 00:29:36, expires 00:03:26, RP 10.87.2.6, flags: SCJ
Incoming interface: TenGigabitEthernet 0/12, RPF neighbor 10.87.3.5
Outgoing interface list:
TenGigabitEthernet 0/11
TenGigabitEthernet 1/13
558
PIM Sparse-Mode (PIM-SM)