A network architect is desighing a VPN solution for a client with these requirements: multicast supported 80 of traffic is spoke to spoke * Minimal configuration Which VPN type is the best choice?

The correct answer is A. DMVPN. DMVPN (Dynamic Multipoint VPN) is the ideal solution for all three requirements. It natively supports multicast by using mGRE (multipoint GRE) tunnels. With Phase 2 or Phase 3, spokes can dynamically build direct spoke-to-spoke tunnels on demand (NHRP-triggered), making it…

Advanced WAN Services

Question

A network architect is desighing a VPN solution for a client with these requirements:

multicast supported
80 of traffic is spoke to spoke
Minimal configuration

Which VPN type is the best choice?

Options

ADMVPN
BGRE over IPsec
CVTI
DIPsec direct encapsulation

How the community answered

(41 responses)

A
73% (30)
B
15% (6)
C
5% (2)
D
7% (3)

Explanation

DMVPN (Dynamic Multipoint VPN) is the ideal solution for all three requirements. It natively supports multicast by using mGRE (multipoint GRE) tunnels. With Phase 2 or Phase 3, spokes can dynamically build direct spoke-to-spoke tunnels on demand (NHRP-triggered), making it highly efficient when most traffic is spoke-to-spoke. Configuration is minimal because the hub is configured once and spokes register dynamically - no static tunnel configuration is needed per spoke pair. GRE over IPsec (B) requires static tunnel configuration between each site pair. VTI (C) does not natively support multicast. IPsec direct encapsulation (D) does not support multicast.

Topics

#DMVPN#VPN design#multicast#spoke-to-spoke

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