Tag Archives: PIM

PIM Sparse-Mode (SM) Notes – RFC 4601

Uses both Shared-Tree (*,G) and Source-Tree (S,G).

PIM Sparse-Mode (SM) steps:

  1. Discover PIM neighbor and elect DR.
    PIM is the infrastructure to deliver the multicast packet. It builds the multicast network hop-by-hop. It takes the advantage of the routing table to perform RPF but it does not really matter what routing protocol derives it from. Hence this is why it is called Protocol Independent Multicast (PIM).
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