Hierarchical metering in a virtual router-based network switch
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United States of America Patent
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Feb 23, 2010
Grant Date -
May 17, 2007
app pub date -
Jan 8, 2007
filing date -
Jun 4, 2002
priority date (Note) -
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Abstract
Methods and systems are provided for applying metering and rate-limiting in a virtual router environment and supporting a hierarchy of metering/rate-limiting contexts per packet flow. According to one embodiment, multiple first level metering options and multiple second level metering options associated with a hierarchy of metering levels are provided. A virtual routing engine receives packets associated with a first packet flow and packets associated with a second packet flow. The virtual routing engine performs a first type of metering of the first level metering options on the packets associated with the first packet flow using a first metering control block (MCB) and performs a second type of metering of the second level metering options on the packets associated with the first packet flow and the packets associated with the second flow using a second MCB.
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