The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7177978 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 13, 2007

Filed:

Jul. 29, 2003
Applicants:

Bhushan Mangesh Kanekar, San Jose, CA (US);

Venkateshwar Rao Pullela, San Jose, CA (US);

Dileep Kumar Devireddy, San Jose, CA (US);

Gyaneshwar S. Saharia, Cupertino, CA (US);

Dipankar Bhattacharya, Saratoga, CA (US);

Qizhong Chen, Palo Alto, CA (US);

Inventors:

Bhushan Mangesh Kanekar, San Jose, CA (US);

Venkateshwar Rao Pullela, San Jose, CA (US);

Dileep Kumar Devireddy, San Jose, CA (US);

Gyaneshwar S. Saharia, Cupertino, CA (US);

Dipankar Bhattacharya, Saratoga, CA (US);

Qizhong Chen, Palo Alto, CA (US);

Assignee:

Cisco Technology, Inc., San Jose, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

Methods, apparatus, and other mechanisms are disclosed for merging lookup results, such as from one or more associative memory banks and/or memory devices. An access list is identified. A first set of entries corresponding to a first feature of the access control list entries and a second set of entries corresponding to a second feature of the access control list entries are identified. First and second associative memory banks are programmed respectively based on the first and second sets of entries. Lookup operations are then typically performed substantially simultaneously on the first and second sets of associative memory entries programmed in the associative memory banks to generate multiple lookup results, with these results typically being identified directly, or via a lookup operation in an adjunct memory or other storage mechanism. These lookup results are then combined to generate a merged lookup result.


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