•MSDP establishes a
neighbor relationship between MSDP peers
•Peers connect using TCP
port 639
•Peers send keepalives
every 60 secs (fixed)
•Peer connection reset
after 75 seconds if no MSDP packets or keepalives are received
•MSDP peers must run
mBGP!
•May be an MBGP peer, a
BGP peer or both
•Required for peer-RPF
checking of the RP address in the SA to prevent SA looping
•Exception: BGP is
unnecessary when
peering with only a single MSDP peer (default-peer)
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