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300-510 · Question #295

Which PIM message populates the outgoing interface list?

The correct answer is B. join. In PIM Sparse Mode, routers send Join messages upstream toward the RP (or source) to signal interest in a particular (S,G) or (*,G). Each router that receives a Join adds the interface on which the Join arrived into its outgoing-interface list (OIL) for that multicast state, ensu

Multicast Routing

Question

Which PIM message populates the outgoing interface list?

Options

  • Aassert
  • Bjoin
  • Cregister
  • Dhello

How the community answered

(28 responses)
  • A
    4% (1)
  • B
    89% (25)
  • D
    7% (2)

Explanation

In PIM Sparse Mode, routers send Join messages upstream toward the RP (or source) to signal interest in a particular (S,G) or (*,G). Each router that receives a Join adds the interface on which the Join arrived into its outgoing-interface list (OIL) for that multicast state, ensuring that multicast packets are forwarded downstream only where needed.

Topics

#PIM#Multicast Routing#Join/Prune messages#Outgoing Interface List

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