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:
Feb. 26, 2019

Filed:

Jun. 29, 2017
Applicant:

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

Inventors:

Daniel C. Frost, Feltham, GB;

Stewart F. Bryant, Merstham, GB;

Clarence Filsfils, Brussels, BE;

Assignee:

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

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/723 (2013.01); H04L 12/721 (2013.01); H04L 12/751 (2013.01); H04L 12/717 (2013.01); H04L 29/06 (2006.01); H04L 12/24 (2006.01); H04L 12/775 (2013.01);
U.S. Cl.
CPC ...
H04L 45/50 (2013.01); H04L 41/00 (2013.01); H04L 45/02 (2013.01); H04L 45/26 (2013.01); H04L 45/38 (2013.01); H04L 45/42 (2013.01); H04L 45/44 (2013.01); H04L 45/58 (2013.01); H04L 45/66 (2013.01); H04L 69/166 (2013.01); H04L 45/34 (2013.01);
Abstract

A method, communications processing device, and computer readable medium for MPLS segment routing are disclosed. One embodiment of the method comprises generating a first link-state packet comprising a first data structure. The first data structure maps a first portcode to a link connecting the first router within the network or to an additional router reachable from the first router. The method embodiment further includes receiving an incoming data packet encapsulated with a header comprising an incoming portcode stack having the first portcode as its uppermost portcode. The method embodiment further includes removing the first portcode from the incoming portcode stack to create an outgoing portcode stack for an outgoing data packet, and forwarding the outgoing data packet via a port, of the first router, identified by the first portcode.


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