Arrangement in a multi-homed transport endpoint for...

Details Arrangement in a multi-homed transport endpoint for... Arrangement in a multi-homed transport endpoint for...

2011-07-12

2011-07-12

Gillis, Brian J (Department: 2441)

Electrical computers and digital processing systems: multicomput

Computer-to-computer data routing

C709S227000, C709S228000

Reexamination Certificate

active

07979577

ABSTRACT:
A multi-homed endpoint, having multiple interfaces with respective source addresses, selects a source address for transport of a message according to a prescribed multi-homed transfer protocol, based on source-destination address pair metrics, each source-destination address pair metric identifying link performance between a corresponding source address and a corresponding destination address. Each source-destination address pair is assigned a counter for tracking respective acknowledgements to messages output via the corresponding source-destination address pair. The multi-homed endpoint selects a source-destination address pair, for transport of messages, based on the corresponding metric identifying the highest relative link performance. Heartbeat messages are periodically sent for unselected source-destination pairs to maintain updated link performance metrics between the respective source-destination address pairs. Hence, the multi-homed endpoint can ensure selection of a link having opimum link performance based on the corresponding counter specifying the highest relative link performance for the corresponding source-destination address pair.

REFERENCES:
patent: 7068598 (2006-06-01), Bryson et al.
patent: 7277954 (2007-10-01), Stewart et al.
patent: 2003/0093485 (2003-05-01), Dougall et al.
Stewart et aL, “Stream Control Transmission Protocol”, Request for Comments 2960, Network Working Group, Oct. 2000, pp. 1-134.

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