Network performance monitoring and restoration based on...

Details Network performance monitoring and restoration based on... Network performance monitoring and restoration based on...

2005-07-12

2005-07-12

Ton, David (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Error count or rate

C714S707000

Reexamination Certificate

active

06918070

ABSTRACT:
A network element (NE) in a communications network decodes a data stream received over a communication link. Upon synchronization with the data stream, the NE determines a performance metric for the link based on a number of transmission code violations. In response to the performance metric exceeding a predetermined threshold, the NE commands the selection of a different link to carry the data stream via a switch signal. The switching or rerouting of signals may occur between a single pair of NEs (e.g., point-to-point span) or in a more complex topology having a plurality of interconnected NEs.

REFERENCES:
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patent: 5495471 (1996-02-01), Chow et al.
patent: 5740186 (1998-04-01), Widmer
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patent: 6058103 (2000-05-01), Henderson et al.
patent: 6198413 (2001-03-01), Widmer
patent: 6285688 (2001-09-01), Henderson et al.
patent: 6556539 (2003-04-01), Henderson
Widmer et al., “A DC-Balanced, Partitioned-Block, 8B/10B Transmission Code,”IBM Journal of Research and Development,vol. 27, No. 5 (Sep. 1983), pp. 440-451.

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