Concept Guide

2 In E-BSR, if the C-RP advertisements are not in synchronization with the standby, rst few BCM C-RP advertisement might not have
the complete list of RP mappings. Due to this, there is a possibility of RP mapping timeout and momentary trac loss in the network.
3 If you congure a secondary VLT peer as an E-BSR and in case of ICL ap or failover, the VLT lag will be down resulting a BSM
timeout in the PIM domain and a new BSR will be elected. Hence, it is recommended to congure the primary VLT peer as E-BSR.
To enable BSR election for IPv4 or IPv6, perform the following steps:
1 Enter the following IPv4 or IPv6 command to make a PIM router a BSR candidate:
CONFIGURATION
ip pim bsr-candidate
ipv6 pim bsr-candidate
2 Enter the following IPv4 or IPv6 command to make a PIM router a RP candidate:
CONFIGURATION
ip pim rp-candidate
ipv6 pim rp-candidate
3 Display IPv4 or IPv6 Bootstrap Router information.
EXEC Privilege
show ip pim bsr-router
Example:
DellEMC# show ip pim bsr-router
PIMv2 Bootstrap information
This system is the Bootstrap Router (v2)
BSR address: 7.7.7.7 (?)
BSR Priority: 0, Hash mask length: 30
Next bootstrap message in 00:00:08
This system is a candidate BSR
Candidate BSR address: 7.7.7.7, priority: 0, hash mask length: 30
DellEMC#
show ipv6 pim bsr-router
Example:
DellEMC#show ipv6 pim bsr-router
PIMv2 Bootstrap information
BSR address: 200::1 (?)
BSR Priority: 0, Hash mask length: 126
Expires: 00:01:43
This system is a candidate BSR
Candidate BSR address: 100::1, priority: 0, hash mask length: 126
Next Cand_RP_advertisement in 00:00:25
RP: 100::1(Lo 0)
DellEMC#
Enabling RP to Server Specic Multicast Groups
When you congure 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 congure an RP candidate for
a specied range of multicast group address.
PIM
Source-Specic Mode (PIM-SSM) 745