Method and system for managing communication in a data network

Details Method and system for managing communication in a data network Method and system for managing communication in a data network

2004-12-09

2008-10-21

Pham, Brenda (Department: 2616)

Multiplex communications

Fault recovery

C370S431000

Reexamination Certificate

active

07440393

ABSTRACT:
The present invention provides a method and system for managing communication in a data network. The method and system involves monitoring the communication channels at the host level. The hosts are updated with the monitoring information following which they take a coordinated decision in cases of failure of a channel. The data network comprises a plurality of hosts, which are connected to each other through a plurality of channels. A monitor host is elected out of the plurality of hosts to periodically broadcast a system state packet to the plurality of hosts. The system state packet contains information about the state of the plurality of channels and the plurality of hosts for a given channel. Each of the plurality of hosts compares the observed state of channels, as observed by it, with the reported state as reported in the system state packet. In case a host identifies a discrepancy between the observed state and the reported state, it broadcasts a host state packet, updating the monitor host about the observed state. The monitor host, on the basis of the information contained in the host state packet, updates the system state packet and broadcasts the updated system state packet to the plurality of hosts. Based on the updated system state packets, each of the plurality of hosts may select an alternate optimal channel for communication in case a channel fails.

REFERENCES:
patent: 4562575 (1985-12-01), Townsend
patent: 7116674 (2006-10-01), Shi
patent: 2002/0126635 (2002-09-01), Sugiyama et al.
patent: 2004/0156353 (2004-08-01), Bevan et al.

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