Designing Cisco Enterprise Networks (ENSLD) — Question 195

An organization plans to deploy multicast across two different autonomous systems. Their solution must allow RPs to:
✑ discover active sources outside their domain
✑ use the underlying routing information for connectivity with other RPs
✑ announce sources joining the group
Which solution supports these requirements?

Answer options

Correct answer: B

Explanation

The correct answer is B, MSDP, as it allows Rendezvous Points (RPs) in different autonomous systems to exchange information about active multicast sources. A is incorrect because SSM (Source-Specific Multicast) does not support discovery of sources in other domains. C and D, PIM-DM and PIM-SM, respectively, are protocols for multicast routing but do not provide cross-domain source discovery functionality.