A system establishes a virtual private network (VPN) tunnel to a destination and determines a next hop for the VPN tunnel. The system inserts the next hop, and an address associated with the destination, into an entry of a first table. The system inserts the next hop, and a tunnel identifier corresponding...http://www.google.fr/patents/US7779461?utm_source=gb-gplus-shareBrevet US7779461 - Point-to-multi-point/non-broadcasting multi-access VPN tunnels
