×

Search engine for forwarding table content addressable memory

  • US 6,570,877 B1
  • Filed: 04/07/1999
  • Issued: 05/27/2003
  • Est. Priority Date: 04/07/1999
  • Status: Active Grant
First Claim
Patent Images

1. A search engine for managing a forwarding table having a plurality of entry locations for storing packet flow information in a network node device, said search engine comprising:

  • configuration registers in communication with a central processing unit (CPU);

    a comparator for sequentially comparing at least one search criteria with entries in the forwarding table, wherein the at least one search criteria is stored in said configuration registers by the CPU;

    means for acting when the comparison produces a positive result, wherein at least one action associated with at least one search criteria is stored in said configuration registers by the CPU; and

    a memory in communication with said configuration registers and said comparator, said memory receiving addresses corresponding to locations in the forwarding table determined by said comparator to match the at least one search criteria.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×