Lab 159 - BSR Propagation Filtering - Learn Cisco

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Lab 159 - BSR Propagation Filtering

Prerequisites: CCNP level skills.


Topology

Pic. 1 - Topology Diagram.


Note!
Routers and switches are already configured as per the topology diagram. All devices use OSPF area 0 as their routing protocol as well as multicast routing.


IP PIM Sparse Mode has been enabled on VLANs: 14, 30, 133, 143.

Task 1
Configure R1 as the RP and BSR candidate for all multicast groups. Use the most stable interface to accomplish the task.

Task 2
Ensure that R3 does not receive information about RP.

Solution


Task 1
Configure R1 as the RP and BSR candidate for all multicast groups. Use the most stable interface to accomplish the task.


R1 Configuration:

!
interface Loopback101
 ip address 172.16.101.1 255.255.255.255
 ip pim sparse-mode
!
ip pim bsr-candidate Loopback101 0
ip pim rp-candidate Loopback101
!


Verification:
Pic. 2 - RP Information on R3.


Note!
Without filtering, R3 receives information about RP.



Task 2
Ensure that R3 does not receive information about RP.
S3 Configuration:
!
interface Vlan133
 ip address 10.1.133.10 255.255.255.0
 ip pim bsr-border
 ip pim sparse-mode
!

Verification:
Pic. 3 - RP information on R3.


The previous information about RP slowly expires. R3 loses information about RP.

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