Switching over the DMVPN over Backup WAN Conn

Unanswered Question
May 29th, 2008

how to switchover the GRE VPN tunnels over backup WAN connections if you have DMVPN.

the Scenario is attached along with the detail description

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smahbub Wed, 06/04/2008 - 06:27

Dynamic Multipoint VPN (DMVPN) enables better scaling of large and small IPsec VPNs by combining generic routing encapsulation (GRE) tunnels, IP Security (IPsec) encryption, and Next Hop Resolution Protocol (NHRP) routing. Security Manager supports DMVPN using the EIGRP, OSPF, and RIPv2 dynamic routing protocols, and GRE static routes. In addition, On-Demand Routing (ODR) is supported. ODR is not a routing protocol. It may be used in a hub-and-spoke VPN topology when the spoke routers do not connect to any router other than the hub. If you are running dynamic protocols, ODR is not suitable for your network environment.

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