Method and apparatus for scalable virtual private network...

Details Method and apparatus for scalable virtual private network... Method and apparatus for scalable virtual private network...

H - Electricity

04

L

H04L 12/18 (2006.01) H04H 20/76 (2009.01) H04L 12/56 (2006.01)

Patent

CA 2531349

In one embodiment, the present invention is a method and apparatus for scalable virtual private network multicasting. In one embodiment a service network builds a new data multicast distribution tree for each high-bandwidth multicast data flow (e.g., multicast data flows that require an amount bandwidth meeting or exceeding a predefined threshold). However, if the multicast data flow is a low-bandwidth flow (e.g., if the required amount of bandwidth falls below the predefined threshold), the multicast data flow is routed over an existing multicast distribution tree in order to minimize an amount of state information that must be maintained by service provider core routers in the backbone network.

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