Method and apparatus for lossless switchover in a redundant switch fabric
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United States of America Patent
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Apr 3, 2007
Grant Date -
Jul 11, 2002
app pub date -
Nov 30, 2001
filing date -
Jan 6, 2001
priority date (Note) -
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Abstract
Method and apparatus for lossless switchover in a redundant switch fabric improves the reliability and predictability of a cell reaching its destination without the cell being lost during switch-over through redundant switch fabrics. Ingress and egress buffers are disposed in input and output line cards to maintain the history of transmitted cells. When switch-over occurs, the cells transmission history is used to recover lost cells transparently and with minimal latency.
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