Click the Exhibit button. RP1 and RP2 are acting as PIM-SM rendezvous points (Rps) in their autonomous system. Referring to the diagram, which purpose does the MSDP session between RP1 and RP2 serve?

Question

Exhibit

Options

• AMSDP allows RPs in different PIM domains to advertise any active multicast receivers to each
• BMSDP allows RPs in different PIM domains to advertise any active multicast sources to each
• CMSDP routes are used by an RP for reverse path forwarding lookups when milticast sources exist
• DMSDP allows RPs in different PIM domains to form PIM neighbor relationship with each other.

• A
  4% (1)
• B
  83% (20)
• C
  4% (1)
• D
  8% (2)

Explanation

The Multicast Source Discovery Protocol (MSDP) is used to connect multicast routing domains. It typically runs on the same router as the Protocol Independent Multicast (PIM) sparse-mode rendezvous point (RP). Each MSDP router establishes adjacencies with internal and external MSDP peers similar to the way BGP establishes peers. These peer routers inform each other about active sources within the domain. When they detect active sources, the routers can send PIM sparse-mode explicit join messages to the active source.

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