Multicast Source Discovery Protocol on Advanced Routing Engine
Configure MSDP for IPv4 multicast on an Advanced Routing Engine.
Advanced Routing mode supports Multicast Source Discovery
Protocol (MSDP) in PIM Sparse Mode (PIM-SM). MSDP-enabled firewalls
in one domain can peer with MDSP-enabled devices in a different
domain or autonomous system. The peers exchange control information
and discover multicast sources outside their own domain. MSDP tracks
active sources and shares them with configured peers. MSDP reduces
the complexity of interconnecting multiple PIM-SM domains by allowing
the domains to use an interdomain source tree.
MSDP uses well-known
TCP port 639 for peering. Before you configure MSDP, be familiar
with RFC 3618.
types are Source Active (SA), Keepalive, and Notification messages.