Method and apparatus for redundancy switching in line cards

Details Method and apparatus for redundancy switching in line cards Method and apparatus for redundancy switching in line cards

2006-02-21

2006-02-21

Beausoliel, Robert (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S004110, C714S005110, C710S038000, C710S110000, C710S300000, C710S301000

Reexamination Certificate

active

07003690

ABSTRACT:
A system for redundancy switching of line cards in a communications system. When a line card needs to be replaced or serviced or becomes inoperable, signal traffic is switched to and through a redundant line card. This is achieved by implementing a switching fabric on I/O cards, where the I/O cards carry signal traffic to and from line cards. The switching fabric enables traffic to and from an I/O card servicing the line card to be replaced to instead service the redundant line card.

REFERENCES:
patent: 5596569 (1997-01-01), Madonna et al.
patent: 5935244 (1999-08-01), Swamy et al.
patent: 6052045 (2000-04-01), Martich
patent: 6137793 (2000-10-01), Gorman et al.
patent: 6744779 (2004-06-01), Yamaguchi et al.
patent: 2002/0038461 (2002-03-01), White et al.

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