Configure the router to advertise itself as the Candidate Bootstrap Router (Candidate-BSR) for the PIM-SM domain.
Prerequisites
You must be in the PIM configuration context, as indicated by the
switch(config-pim)# prompt.
PIM-SM must be enabled on the interface used as the source IP interface.
Procedure
-
Configure a Candidate-BSR using the following command.
bsr-candidate source-ip-interface
<INTERFACE-NAME>
For example, the following command configures a Candidate-BSR using interface 1/1/4 as the source for the router IP address. This command can also be applied to an L3 VLAN or L3 LAG.
switch(config)# router pim
switch(config-pim)# bsr-candidate source-ip-interface 1/1/4
For a Candidate-BSR, you can configure various options as shown in the following steps.
-
Configure the bootstrap message (BSM) interval for sending periodic RP-Set messages using the following command.
bsr-candidate bsm-interval
<INTERVAL-VALUE>
For example, the following command configures a bootstrap message interval of 150 seconds:
switch(config)# router pim
switch(config-pim)# bsr-candidate bsm-interval 150
-
Set the priority to apply to the router when a BSR election process occurs in the PIM-SM domain using the following command.
bsr-candidate priority
<PRIORITY-VALUE>
For example, the following command configures the priority as 250:
switch(config)# router pim
switch(config-pim)# bsr-candidate priority 250
-
Configure the length (in bits) of the hash-mask using the following command. Used to control the distribution of multicast groups among the C-RP in a domain where there is overlapping coverage of the groups among the RPs.
bsr-candidate hash-mask-length
<LENGTH-VALUE>
For example, the following command configures the hash-mask length to 4:
switch(config)# router pim
switch(config-pim)# bsr-candidate hash-mask-length 4