When enabling interdomain multicast routing, which two statements are correct? (Choose two.)
A.
Multiprotocol BGP is used instead of PIM SM to build the intradomain and interdomain multicast
distribution trees
B.
Use MSDP to enable the RPs from different domains to exchange information about active
multicast sources
C.
MSDP SA packets are sent between the multiprotocol BGP peers
D.
Noncongruent unicast and multicast topologies can be supported using multiprotocol BGP
Interdomain Multicast Routing Protocols
– MP-BGP for exchange of RPF information
– MSDP to learn about sources; MP-BGP does not build multicast distribution trees
– MP-BGP multicast table used by routers to perform RPF checks so PIM-SM knows which way to send (S,G) joins
– Two sets of NLRIs, one for unicast routing and one for multicast RPF checking, allows for noncongruent topologies
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