Method and apparatus providing prioritized recursion resolution of border gateway protocol forwarding information bases
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United States of America Patent
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Mar 24, 2009
Grant Date -
May 31, 2007
app pub date -
Nov 30, 2005
filing date -
Nov 30, 2005
priority date (Note) -
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Abstract
A method, performed in a network packet routing element, comprises establishing a forwarding information base (FIB) lacking a hierarchical data structure but in which one or more dependent FIB entries are associated with a parent FIB entry; establishing a plurality of strict priority queues, each having an associated priority; receiving a change to the parent FIB entry; for each of the dependent FIB entries, selecting one of the queues and enqueuing the dependent FIB entries in the selected queues for re-resolution; dequeuing the dependent FIB entries for re-resolution, according to a priority order of the queues.
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