Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2007-12-14
2011-11-01
Wilson, Robert W (Department: 2475)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S230000, C370S256000, C370S392000, C709S205000, C709S232000, C709S238000
Reexamination Certificate
active
08050264
ABSTRACT:
A method and system for re-routing a multicast stream is provided. The method for re-routing a multicast stream includes: providing a prior multicast forwarding path corresponding to a first route; establishing a new multicast forwarding path between a downstream router and a second upstream router corresponding to a second route; re-routing a multicast stream from said prior multicast forwarding path to said new multicast forwarding path, wherein said multicast stream utilizes said prior multicast forwarding path until said new multicast forwarding path is operational; and pruning said prior multicast forwarding path when said new multicast forwarding path is operational. Therefore, the multicast stream transmitting will not be interrupted during the switchover process of the multicast forwarding path caused by that a unicast route to a multicast source or a rendezvous point has changed.
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Huawei Technologies Co. Ltd.
Kamara Mohamed
Slater & Matsil L.L.P.
Wilson Robert W
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