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Chapter 35
Configuring MSDP
Figure 35-1
MSDP Benefits
MSDP has these benefits:
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•
•
•
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MSDP Running Between RP Peers
RP + MSDP peer
MSDP SA
Register
Multicast
PIM
Source
DR
PIM sparse-mode
domain
It breaks up the shared multicast distribution tree. You can make the shared tree local to your
domain. Your local members join the local tree, and join messages for the shared tree never need to
leave your domain.
PIM sparse-mode domains can rely only on their own RPs, decreasing reliance on RPs in another
domain. This increases security because you can prevent your sources from being known outside
your domain.
Domains with only receivers can receive data without globally advertising group membership.
Global source multicast routing table state is not required, saving memory.
MSDP SA
TCP connection
BGP
MSDP peer
(S,G) Join
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
Understanding MSDP
MSDP peer
Peer RPF flooding
Receiver
35-3
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