Which of the following topology situations would be a qood candidate for configuring DMVPN?
A.
Extranet VPN
B.
Managed overlay VPN topology
C.
Hub-and-spoke VPN topology
D.
Central-site VPN topology
E.
Full mesh VPN topology
F.
Remote-access VPN topology
Explanation:
A DMVPN cloud topology can support either a hub-and-spoke or spoke-to-spoke deployment model.
In a hub-and-spoke deployment model, each headend uses an mGRE interface and each branch uses
a p2pGRE or mGRE interface. In a spoke-to-spoke deployment model, both the headend and the
branch must use mGRE interfaces.
Reference:
http://www.cisco.com/en/US/docs/solutions/Enterprise/WAN_and_MAN/DMVPN_1.html
the difference between “Spoke-to-spoke” and “full mesh” is the point that the NHRP / NHS are involved.
if you have TWO NHS, the line gets even fuzzier.
honestly, I chalk up this WHOLE branch of cisco-lingo to some PR guy who likes to use the word “spin” but is too chicken to go into ACTUAL politics or news.
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