Forwarding of packets based on a filtered forwarding information base
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United States of America Patent
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-
Apr 3, 2012
Grant Date -
Mar 31, 2011
app pub date -
Sep 29, 2009
filing date -
Sep 29, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A filtered Forwarding Information Base (FIB) (the “complete local FIB”) is used to determine how to forward packets, typically on line cards. The complete local FIB is generated by filtering (i.e., dropping or removing) extraneous entries in the standard global FIB of a router. This smaller FIB is then installed within the memory of a forwarding engine, possibly implemented as a single application-specific integrated circuit (ASIC), for use in determining how to forward packets, with the router forwarding packets accordingly.
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