PIM-SM bootstrap router (BSR) and rendezvous-point (RP)

“Every PIM multicast group needs to be associated with the IP address of a Rendezvous Point (RP) […] For all senders to reach all receivers, it is crucial that all routers in the domain use the same mappings of group addresses to RP addresses. […] The BSR mechanism provides a way in which viable group-to-RP mappings can be created and rapidly distributed to all the PIM routers in a domain.” –rfc5059

Relevant Configuration

Enable PIM protocol

switch(config)# router pim

Configuring static address of rendezvous point for multicast group:

switch (config) # ip pim rp-address 10.10.10.10
switch (config) # ip pim vrf default rp-address 100.100.100.100 group-list 233.3.3.3/32 bidir

Configure PIM BSR candidate

switch (config) # ip pim bsr-candidate vlan 10 priority 100

Configure PIM RP candidate

switch (config) # ip pim vrf default rp-candidate ethernet 1/12 group-list 225.1.0.0/16
switch (config) # ip pim vrf default rp-candidate ethernet 1/12 bidir

Show Commands to Validate Functionality

show ip pim protocol

Expected Results.

  • You can configure OSPF routing for loopback1.
  • You successfully enabled PIM-SM on loopback1.
  • You configured loopback1 to act as a PIM-SM RP.
  • You configured the specific group-prefix that will be used in the next test.
  • You successfully enabled the BSR on both 8325s using loopback0 as the BSR source IP.

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