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:
Aug. 09, 2022

Filed:

Jan. 09, 2019
Applicant:

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

Inventors:

Craig Thomas Hill, Sterling, VA (US);

Stephen Michael Orr, Wallkill, NY (US);

Assignee:

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

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 45/021 (2022.01); H04L 9/40 (2022.01); H04L 9/08 (2006.01); H04L 69/18 (2022.01);
U.S. Cl.
CPC ...
H04L 63/0209 (2013.01); H04L 9/0838 (2013.01); H04L 45/021 (2013.01); H04L 63/0428 (2013.01); H04L 69/18 (2013.01);
Abstract

A network device configured to communicate with a network executes a security protocol. The security protocol establishes a secure session with a security peer network device, exchanges security protected traffic with the security peer network device over a secure link, detects whether there is a security failure in the secure session, and upon detecting a security failure, signals there is a security failure. The network device also executes a routing protocol. The routing protocol maintains a routing table that includes a route to the security peer over the secure link, routes the security protected traffic along the route, and, upon receiving from the security protocol the signal that there is a security failure, removes the route from the routing table to stop the routing.


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