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Cisco Router and Security Device Manager Version 2.2 User’s Guide
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Chapter11 DMVPN
Edit Dynamic Multipoint VPN (DMVPN)

Bandwidth

Enter the intended bandwidth, in kilobytes per second (kbps). Default bandwidth
values are set during startup; the bandwidth values can be displayed using the
show interfaces EXEC command. The value 1000 is a typical bandwidth setting
in DMVPN configurations.

Delay

Set a delay value for an interface, in tens of microseconds. The value 1000 is a
typical delay setting in DMVPN configurations.

Tunnel Key

Enter the key to use for this tunnel. This key should be the same for all mGRE
tunnels in the network.

This is a multipoint GRE Tunnel

Check if this to be an mGRE tunnel interface, an interface capable of maintaining
connections to multiple peers. If this router is being configured as a DMVPN hub,
you must check this box to allow the hub to establish connections with all spokes.
If the router is being configured as a spoke, check this box if you are configuring
a fully meshed DMVPN. In this way, a spoke can establish a connection to the hub
to send traffic and receive next hop information to directly connect to all other
spokes in the DMVPN.
NHRP Panel
Use this panel to provide NHRP configuration parameters.

Authentication String

Enter the string that DMVPN hubs and spokes must use to authenticate
themselves for NHRP transactions. The string can be up to 8 characters long. All
NHRP stations in the DMVPN must be configured with the same authentication
string.