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Table Of Contents
1. C-BSRs flood their candidacy throughout the domain in a BSM. Each message contains a BSR priority value, and the C-BSR
with the highest priority value becomes the BSR.
2. Each C-RP unicasts periodic Candidate-RP-Advertisements to the BSR. Each message contains an RP priority value and the
group ranges for which it is a C-RP.
3. The BSR determines the most efficient and stable group-to-RP mappings, which is called the RP-Set.
4. The BSR floods the RP-Set throughout the domain periodically in case new C-RPs are announced, or an RP failure occurs.
To enable RP election, perform the following steps:
1. Enter the following command to make a PIM router a BSR candidate:
CONFIGURATION
ip pim bsr-candidate
2. Enter the following command to make a PIM router a RP candidate:
CONFIGURATION
ip pim rp-candidate
3. Display Bootstrap Router information.
EXEC Privilege
show ip pim bsr-router
Enabling RP to Server Specific Multicast Groups
When you configure an RP candidate, its advertisement is sent to the entire multicast address range and the group-to-RP
mapping is advertised for the entire range of multicast address. Starting with Dell EMC Networking OS 9.11.0.0, you can
configure an RP candidate for a specified range of multicast group address.
The Configured multicast group ranges are used by the BSR protocol to advertise the candidate RPs in the bootstrap messages.
You can configure the multicast group ranges as a standard ACL list of multicast prefixes. You can then associate the configured
group list with the RP candidate.
NOTE:
If there is no multicast group list configured for the RP-candidate, the RP candidate will be advertised for all the
multicast groups.
To enable an RP to serve specific group of multicast addresses, perform the following step:
Enter the following command to associate a multicast group to an RP candidate:
CONFIGURATION
ip pim [vrf vrf-name] rp-Candidate interface [priority] [acl-name]
The specified acl-list is associated to the rp-candidate.
NOTE: You can create the ACL list of multicast prefix using the ip access-list standard command.
602 PIM Source-Specific Mode (PIM-SSM)