Which protocol is used to determine the NBMA address on the other end of a tunnel when mGRE is used?

Which protocol is used to determine the NBMA address on the other end of a tunnel when mGRE is used?
A . NHRP
B . IPsec
C . MP-BGP
D . OSPF

View Answer

Answer: A

Explanation:

NHRP is used to map tunnel IP addresses to ”physical” or ”real” IP addresses (NBMA addresses), used by endpoint routers. It resolves private addresses (those behind mGRE and optionally IPsec) to a public address.