A municipal library consortium places the same RP address on two core routers in different data centers and peers them with MSDP so active sources remain known after one DC fails. What is the primary purpose of that design?
Select an answer to reveal the explanation.
Short Explanation
Anycast RP is two librarians sharing one desk number—receivers always find “the RP,” whichever building is up. MSDP is the note-passing so each RP learns which sources the other already saw. Together they keep sparse-mode joins working through a DC outage.
Full Explanation
Anycast RP advertises an identical RP address from multiple routers so PIM Join and Register traffic follow unicast routing to the nearest (or surviving) instance. MSDP exchanges Source-Active messages between RPs so each instance learns active sources registered elsewhere, preserving shared-tree and SPT switchover behavior after failure. The combination targets RP high availability; it does not replace IGMP snooping or redefine SSM registration rules.