Method for actively managing central queue buffer allocation
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United States of America Patent
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Sep 7, 2010
Grant Date -
Aug 28, 2008
app pub date -
Apr 18, 2008
filing date -
Apr 9, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method is provided for packet flow control for a switching node of a data transfer network. The method includes actively managing space allocations in a central queue of a switching node allotted to the ports of the switching node based on the amount of unused space currently available in the central queue. In a further aspect, the method includes separately tracking unallocated space and vacated allocated space, which had been used to buffer packets received by the ports but were vacated since a previous management update due to a packet being removed from the central queue. Each port is offered vacated space that is currently allocated to that port and a quantity of the currently unallocated space in the central queue to distribute to one or more virtual lanes of the port.
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