Method and apparatus for failure resilient forwarding of...

Details Method and apparatus for failure resilient forwarding of... Method and apparatus for failure resilient forwarding of...

2011-06-28

2011-06-28

Marcelo, Melvin (Department: 2463)

Multiplex communications

Fault recovery

Bypass an inoperative switch or inoperative element of a...

Reexamination Certificate

active

07969869

ABSTRACT:
In one embodiment, a method and an apparatus for failure-resilient forwarding of data over a computer network include introducing a marker into the data stream, e.g., at the sending node, and allowing, in turn, forwarding nodes and/or receivers to efficiently track data stream reception. The marker functions as a checkpoint for the data transport process, and is identified and indexed at each forwarding node and receiver. Each receiver saves the marker prior to delivering data to an application, thereby designating a point in the data stream at which all preceding data is confirmed to have been delivered to the application. Thus, if a forwarding node fails, the receiver may request stream data from an alternate forwarding node by specifying to the alternate forwarding node to provide data starting from the marker.

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