Patent ID: 8132000
Filing Date: 2012-03-06
Classification: H04L

Abstract:
1. A method, comprising: receiving, by a device, a join request from a downstream router, the join request being associated with a multicast group and being received via a tunnel established between the device and the downstream router; determining, by the device and in response to the join request, whether another join request had previously been received for the multicast group; exchanging, by the device, security association parameters with the downstream router, in response to the join request, based on the determining; exchanging, by the device and via the tunnel, group keys with the downstream router; encrypting, by the device, a multicast packet using the group keys; encapsulating, by the device, the encrypted multicast packet to form an encapsulated payload; appending, by the device, a header to the encapsulated payload to form an encapsulated packet; and forwarding, by the device, the encapsulated packet to the downstream router.