Which BGP extended community is used to control the distribution of VPN routing information and
to identify routers that may receive a set of routes that carry the community?
A.
SOO
B.
RT
C.
opaque
D.
route origin
E.
RD
Explanation:
http://blog.initialdraft.com/archives/1537/
Route Target is a 64-bits BGP community used for tagging prefixes. When exporting prefixes from
the VRF,we add to the prefixes a Route-Target community, so when the PE in the remote site has
to import prefixes intothe VRF, it can easily identify which prefixes to import.