Multicast Dispatch

When the network session starts from the headquarters to the branch, as shown in Figure 21 - VPN Alternative Traffic Paths, a VPN session is open along the red path.

When the Multicast Dispatch Method is used, after the return packet reaches the lower LinkProof device, a Multicast is sent with the return packet to both VPN gateways. The gateway that responds first, is the one with an established VPN session. LinkProof forwards the traffic to the VPN gateway and the session is not interrupted.

Note	The OnDemand Switch VL platform does not support the Multicast Dispatch Method.

For information on configuring a farm with the Multicast Dispatch Method, see LinkProof Farms.