F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices VPN Configuration Guide-6PW100

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Figure 305 Full mesh DVPN
• Hub-spoke DVPN—In a hub-spoke DVPN, no tunnel can be established between two spokes, and
data between them has to be forwarded through the hub. The hub is used as both the routing
information exchange center and the data forwarding center.
As shown in
1032HFigure 306, each spoke establishes a permanent tunnel with the hub, and data
between spokes is forwarded through the hub.
Figure 306 Hub-spoke DVPN
299BDVPN implementation
DVPN works in three phases: connection initialization, registration, and tunnel establishment.