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.

Date of Patent:
Apr. 16, 2024

Filed:

Jan. 31, 2023
Applicant:

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

Inventors:

Ayan Banerjee, Fremont, CA (US);

Saikat Bhattacharya, San Francisco, CA (US);

Ramesh Sivakolundu, Saratoga, CA (US);

Ravikanth Nasika, Fremont, CA (US);

Rajesh Sharma, San Jose, CA (US);

Assignee:

CISCO TECHNOLOGY, INC., San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 49/00 (2022.01); H04L 43/028 (2022.01); H04L 43/12 (2022.01); H04L 45/7453 (2022.01);
U.S. Cl.
CPC ...
H04L 49/30 (2013.01); H04L 43/028 (2013.01); H04L 43/12 (2013.01); H04L 45/7453 (2013.01);
Abstract

Techniques to eliminate duplicate packets from a stream of packets. A method includes receiving a packet, hashing elements of the packet to obtain a packet partial signature, generating an action data value by appending, to the packet partial signature, unhashed packet information, accessing a hash store location in a hash store based on the action data value, determining, based on data stored at the hash store location, whether the packet is a duplicate of a previously-received packet, and based on whether the packet is a duplicate of a previously-received packet, one of allowing and preventing one of the packet and a copy of the packet to reach a downstream network node.


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