Administrator Guide

3. If you configure a secondary VLT peer as an E-BSR and in case of ICL flap 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 configure the primary VLT peer as E-BSR.
NOTE: BSR configuration in the multicast topology should ensure that secondary VLT node is not selected as E-BSR. If
selected as E-BSR during ICL flap or VLT failover, traffic disruption will be reported.
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#
PIM Sparse-Mode (PIM-SM)
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