System for accessing content-addressable memory in packet...

Details System for accessing content-addressable memory in packet... System for accessing content-addressable memory in packet...

2004-04-28

2009-06-30

Orgad, Edan (Department: 2419)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S256000, C370S392000, C370S412000, C370S429000, C370S469000, C709S223000, C709S224000, C709S231000, C709S249000, C711S108000, C711S122000

Reexamination Certificate

active

07554978

ABSTRACT:
A system for accessing a content-addressable memory in a packet processing system is described. A register holds a data element having a key field. Logic derives a value of the key responsive to 1) packet processing state data relating to one or more packets undergoing processing by the packet processing system, and 2) the value of this key field. The derived value of the key is presented to the memory. In response, the memory searches for an entry associated with the presented key value. If found, the content value associated with the entry is output. If not found, a signal indicative of a miss condition is output.

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