Which two statements about SA caching are true? (Choose two.)
A.
Caching allows pacing of MSDP messages.
B.
Caching reduces join latency.
C.
Caching should not be done by an MSDP speaker.
D.
Caching is used to update the BGP MDT address family.
Explanation:
A MSDP speaker MUST cache SA messages. Caching allows pacing of MSDP messages as well
as reducing join latency for new receivers of a group G at an originating RP which has existing
MSDP (S, G) state. In addition, caching greatly aids in diagnosis and debugging of various
problems.http://www.ietf.org/rfc/rfc3618.txt