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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 11388088 B1

PDFFull Text
Date of Patent:
Jul. 12, 2022

Filed:

Nov. 05, 2019

Segment routing network signaling and packet processing

Applicant:

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

Inventors:

Clarence Filsfils, Brussels, BE;

Zafar Ali, Hicksville, NY (US);

Syed Kamran Raza, Kanata, CA;

Ahmed Refaat Bashandy, Milpitas, CA (US);

Nagendra Kumar Nainar, Morrisville, NC (US);

Carlos M. Pignataro, Cary, NC (US);

Jaganbabu Rajamanickam, Stittsville, CA;

Rakesh Gandhi, Stittsville, CA;

Bhupendra Yadav, Kanata, CA;

Faisal Iqbal, Ottawa, CA;

Assignee:

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

Attorney:

Polsinelli PC

Primary Examiner:

Stephen J Clawson

Int. Cl.
CPC ...
H04L 45/00 (2022.01); H04L 43/106 (2022.01); H04L 45/02 (2022.01); H04L 41/0246 (2022.01); H04L 101/659 (2022.01); H04L 45/302 (2022.01); H04L 45/741 (2022.01);
U.S. Cl.
CPC ...
H04L 45/34 (2013.01); H04L 41/0246 (2013.01); H04L 43/106 (2013.01); H04L 45/02 (2013.01); H04L 45/20 (2013.01); H04L 45/304 (2013.01); H04L 45/741 (2013.01); H04L 61/6059 (2013.01);
Abstract

In one embodiment, segment routing (SR) network processing of packets is performed which includes operations signaling and processing of packets in manners providing processing and/or memory efficiencies. One embodiment includes acquiring a segment routing particular packet by a particular router in a network. Responsive to the particular router data plane ascertained during fast path processing by a fast path processing unit that the segment routing particular packet is to be Operations, Administration, and Maintenance (OAM) processed by a different processing unit in the particular router, communicating a time stamp of a current time and the segment routing particular packet including a segment routing header that includes OAM signaling from said fast path processing to the different processing unit, with fast path processing being hardware-based packet processing by the fast path processing unit. The segment routing particular packet is OAM processing by the different processing unit.

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