Users Guide

Location Description

• ip pim sparse-mode

• ip address 10.11.4.1/24

• untagged TenGigabitEthernet 1/2

• ip igmp access-group igmpjoinfilR2G2

• no shutdown

Preventing a PIM Router from Forming an

Adjacency

To prevent a router from participating in PIM (for example, to configure stub multicast routing), use the

following command.

• Prevent a router from participating in protocol independent multicast (PIM).

INTERFACE mode

ip pim neighbor-filter

Preventing a Source from Registering with the

To prevent the PIM source DR from sending register packets to RP for the specified multicast source and

group, use the following command. If the source DR never sends register packets to the RP, no hosts can

ever discover the source and create a shortest path tree (SPT) to it.

• Prevent a source from transmitting to a particular group.

CONFIGURATION mode

ip pim register-filter

In the following example, Source 1 and Source 2 are both transmitting packets for groups 239.0.0.1 and

239.0.0.2. R3 has a PIM register filter that only permits packets destined for group 239.0.0.2. An entry is

created for group 239.0.0.1 in the routing table, but no outgoing interfaces are listed. R2 has no filter, so it is

Multicast Features 697