Methods and systems for fast packet forwarding
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United States of America Patent
Stats
-
Jan 10, 2006
Grant Date -
May 15, 2003
app pub date -
Oct 18, 2001
filing date -
Jul 31, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Methods and systems for fast packet forwarding include traversing a trie data structure stored in on-chip memory based on bits in an input address. The bits in the input address result in a predetermined location in the data structure. The number of bits that have a first value and that are located before the determined location is calculated. The calculated number of bits corresponds to an offset in a second memory device of an address to which the packet having the input address is to be forwarded. The address can be extracted using a single access to an off-chip memory device.
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