Applying multicast protocols and VPN tunneling techniques to achieve high quality of service for real time media transport across IP networks

  • US 8,477,778 B2
  • Filed: 09/24/2008
  • Issued: 07/02/2013
  • Est. Priority Date: 03/10/2003
  • Status: Active Grant
First Claim
Patent Images

1. A method for data transport that uses multicast protocols, the method comprising:

  • initiating multicast routing instance of ingress or egress nodes of at least one virtual private networks, wherein each payload data is forwarded along a network where at least one client indicates interest in at least one multicast group address;

    creating at least one virtual private network with routing protocols on ends of each of a plurality of virtual private network tunnels;

    associating the multicast group address with the data payload and routing the data payload to multiple clients through the virtual private network tunnels, wherein the data payload is routed such that each tunnel node in a data payload route is multicast enabled;

    communicating a plurality of multicast addressed packets that are encapsulated within a private tunnel such that each tunnel node is specified as a multicast enabled router with specific instructions to construct and to maintain each virtual tunnel for payload transport;

    enabling each multicast router to instantiate a plurality of virtual private network tunnels between a plurality of creation points and a plurality of termination points between a public network and a private network;

    transporting the real-time data payload between the public network and the private network; and

    performing tunnel creation and tear-down that is initiated by a software application running on a client device.

View all claims

    Thank you for your feedback