Methods and apparatus for providing congestion information
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United States of America Patent
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Sep 24, 2013
Grant Date -
Aug 19, 2010
app pub date -
Sep 19, 2008
filing date -
Sep 19, 2007
priority date (Note) -
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Abstract
Methods and systems for providing information relating to congestion at a network element caused by data units intended to be forwarded across a telecommunications network by the network element, the apparatus comprising: load-data receiving means for receiving load data relating to data units intended to be forwarded by the network element; rate-data obtaining means for obtaining data indicative of a configurable rate; first and second registers for storing first and second metrics; first and second updating means operable to update the metrics in said first and second registers in dependence on said load data and on the configurable rate; and a congestion indication provider operable to provide indications of congestion in dependence on the metrics stored in the registers; said apparatus being configured in such that it may provide behavior equivalent to a virtual queue marking scheme by virtue of a minor modification to hardware provided for Single Rate Three Color Marking.
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