Chapter11 DMVPN
Dynamic Multipoint VPN
11-10
Cisco Router and Security Device Manager Version 2.2 User’s Guide
OL-4015-08

Fully Meshed Network

Select if you are configuring the router as a spoke capable of establ ishing a direct
IPSec tunnel to other spokes in the network. A multipoint GRE tunnel is
configured on the spoke to support this functionality. When you select this option,
the graphic displays links from the spokes to the hub, and links t o each other.
The wizard screen list the IOS images required to support a fully-meshed
DMVPN network.
Specify Hub Information
Use this window to provide necessary information about the hub in the DMVPN.

IP Address of Hub’s physical interface

Enter the IP address of the interface on the hub. Obtain this address from the hub
administrator. This address will be used as the tunnel destination.

IP Address of hub’s mGRE tunnel interface

Enter the IP address of the mGRE tunnel interface on the hub. The mGRE tunnel
addresses for the hub and spokes must be in the same subnet.
Spoke GRE Tunnel Interface Configuration
A point-to-point will be created for this spoke using the information entered in
this window.

Select the interface that connects to the Internet

Select the router interface that connects to the Internet. The GRE over IPSec
tunnel originates from this interface.
Selecting an interface that uses a dialup connection may cause the connection to
be always up. You can examine supported interfaces in Interfaces and
Connections to determine if a dialup connection, such as an ISDN or Async
connection has been configured for the physical interface you selected.