Designing Cisco Enterprise Networks (ENSLD) — Question 124

An engineer is designing a PIM Anycast RP solution between two data centers. The design must ensure that RP1 in DC1 and RP2 in DC2 inform each other about specific sources that have joined locally. Which solution must the engineer choose?

Answer options

• A. Provision the RPs on the same IP subnet and extend the subnet at Layer 2 between data centers
• B. Enable MSDP between RPs using separate unique loopback interfaces
• C. Enable MSDP between RPs using the configured Anycast RP address
• D. No action is required because PIM registers from the source will, by default, reach each RP

Correct answer: B

Explanation

The correct answer is B because enabling MSDP between RPs using separate unique loopback interfaces allows them to exchange source information effectively. Option A is incorrect as it doesn't guarantee communication between different data centers. Option C is wrong because using the Anycast RP address for MSDP does not allow for reliable source information exchange. Option D is also incorrect, as it overlooks the need for RPs to specifically communicate about local sources.