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.:
Date of Patent:
Jun. 25, 2019
Filed:
Nov. 28, 2017
Applicant:
Futurewei Technologies, Inc., Plano, TX (US);
Inventors:
Lucy Yong, Georgetown, TX (US);
Donald E. Eastlake, III, Milford, MA (US);
Assignee:
Futurewei Technologies, Inc., Plano, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/705 (2013.01); H04L 12/741 (2013.01); H04L 12/833 (2013.01); H04L 29/08 (2006.01); H04L 29/14 (2006.01);
U.S. Cl.
CPC ...
H04L 45/18 (2013.01); H04L 45/74 (2013.01); H04L 47/31 (2013.01); H04L 67/16 (2013.01); H04L 69/40 (2013.01);
Abstract
A method implemented by a service function forwarder (SFF) comprises receiving, by a receiver of the SFF, a service chain packet comprising a loop prevention field, the loop prevention field comprising a plurality of bits indicating whether an error has occurred during packet transmission, and determining, by a processor of the SFF, whether to forward the service chain packet based on a value in the loop prevention field being less than a predefined parameter, the predefined parameter based on a number of bits (n) in the loop prevention field.