Which types of prefixes will a router running BGP most likely advertise to an IBGP peer, assuming
it is not configured as a route reflector?
A.
prefixes received from any other BGP peer and prefixes locally originated via network
statements or redistributed
B.
all prefixes in its routing table
C.
prefixes received from EBGP peers and prefixes locally originated via network statements or
redistributed
D.
prefixes received from EBGP peers and prefixes received from route reflectors
E.
prefixes received from other IBGP peers, prefixes received from EBGP peers, and prefixes
redistributed to BGP
F.
prefixes received from other IBGP peers and prefixes received from route reflectors
Explanation:
If your autonomous system will be passing traffic through it from another autonomous system to a
third autonomous system, it is very important that your autonomous system be consistent about
the routes that it advertises. For example, if your BGP were to advertise a route before all routers
in your network had learned about the route through your IGP, your autonomous system could
receive traffic that some routers cannot yet route. To prevent this from happening, BGP must wait
until the IGP has propagated routing information across your autonomous system. This causes
BGP to be synchronized with the IGP. Synchronization is enabled by default