PIM BSR

Note: 

The BSR sends mapping messages to 224.0.0.13 (all-PIM-routers). This does notrequire dense mode support or a known RP

Sample Configuraiton

Task:

• Configure R1 loopback 0 as a  multicast source of 239.1.1.1 group
• R2 uses PIM BSR to announce RP.
• R3 will be 239.1.1.1 receiver

Configuration

R2
ip pim bsr-candidate Loopback0 0
ip pim rp-candidate Loopback0

R3

interface FastEthernet0/0

 ip address 192.168.2.2 255.255.255.0

 ip pim sparse-mode

 ip igmp join-group 239.1.1.1

 duplex auto

 speed auto

end

Verify Configuration

R3#sh ip pim rp mapping

PIM Group-to-RP Mappings

Group(s) 224.0.0.0/4

  RP 2.2.2.2 (?), v2

    Info source: 2.2.2.2 (?), via bootstrap, priority 0, holdtime 150

         Uptime: 00:05:27, expires: 00:02:20

R3#sh ip mroute

IP Multicast Routing Table

Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,

       L - Local, P - Pruned, R - RP-bit set, F - Register flag,

       T - SPT-bit set, J - Join SPT, M - MSDP created entry,

       X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,

       U - URD, I - Received Source Specific Host Report,

       Z - Multicast Tunnel, z - MDT-data group sender,

       Y - Joined MDT-data group, y - Sending to MDT-data group

Outgoing interface flags: H - Hardware switched, A - Assert winner

 Timers: Uptime/Expires

 Interface state: Interface, Next-Hop or VCD, State/Mode

(*, 239.1.1.1), 00:03:25/00:02:55, RP 2.2.2.2, flags: SJPCL

  Incoming interface: FastEthernet0/0, RPF nbr 192.168.2.1

  Outgoing interface list: Null

(*, 224.0.1.40), 00:09:36/00:01:57, RP 0.0.0.0, flags: DCL

  Incoming interface: Null, RPF nbr 0.0.0.0

  Outgoing interface list:

    FastEthernet0/0, Forward/Sparse, 00:09:36/00:01:57

R1#ping 239.1.1.1 source loopback 0

Type escape sequence to abort.

Sending 1, 100-byte ICMP Echos to 239.1.1.1, timeout is 2 seconds:

Packet sent with a source address of 1.1.1.1

Reply to request 0 from 192.168.2.2, 144 ms

Reply to request 0 from 192.168.2.2, 468 ms

R1#