Reference Guide
Multicast Source Discovery Protocol (MSDP) | 1021
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Multicast Source Discovery Protocol 
(MSDP)
Overview
MSDP (Multicast Source Discovery Protocol) connects multiple PIM Sparse-Mode 
(PIM-SM) domains together. MSDP peers connect using TCP port 639. Peers send 
keepalives every 60 seconds. A peer connection is reset after 75 seconds if no MSDP 
packets are received. MSDP connections are parallel with MBGP connections. 
FTOS supports MSDP commands on the Dell Force10 platforms indicated by the 
characters that appear under each of the command headings: 
e E-Series,  , 
, or 
z Z-Series. 
Commands
The commands are:
• clear ip msdp peer
• clear ip msdp sa-cache
• debug ip msdp
• ip msdp cache-rejected-sa
• ip msdp default-peer
• ip msdp log-adjacency-changes
• ip msdp mesh-group
• ip msdp originator-id
• ip msdp peer
• ip msdp redistribute
• ip msdp sa-filter
• ip msdp sa-limit
• ip msdp shutdown
• ip multicast-msdp
• show ip msdp
• show ip msdp sa-cache rejected-sa










