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:
Mar. 29, 2016

Filed:

Sep. 16, 2013
Applicant:

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

Inventors:

Reshad A. Rahman, Ottawa, CA;

David P. Toscano, Ottawa, CA;

Sylvain Masse, Gatineau, CA;

David D. Ward, Los Gatos, CA;

Neil R. Ketley, Harpenden, GB;

Assignee:

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

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 15/16 (2006.01); G06F 15/173 (2006.01); H04L 12/26 (2006.01); H04L 12/701 (2013.01); H04L 12/707 (2013.01); H04L 12/709 (2013.01); H04L 12/703 (2013.01); H04L 12/775 (2013.01); H04L 12/773 (2013.01); H04Q 11/00 (2006.01); H04L 12/24 (2006.01);
U.S. Cl.
CPC ...
H04L 43/10 (2013.01); H04L 45/00 (2013.01); H04L 45/22 (2013.01); H04L 45/24 (2013.01); H04L 45/245 (2013.01); H04L 45/28 (2013.01); H04L 45/58 (2013.01); H04L 45/60 (2013.01); H04L 41/0663 (2013.01); H04Q 2011/0081 (2013.01); H04Q 2213/13162 (2013.01); Y02B 60/33 (2013.01);
Abstract

In one embodiment, a plurality of links between a network node and another network node are configured as a link bundle. The network node establishes one or more standby bidirectional forwarding detection (BFD) sessions. Each standby BFD session is associated with one or more links of the link bundle. The network node establishes an active BFD session. The active BFD session is associated with one or more links of the link bundle. In response to non-receipt of returned BFD messages for the active BFD session, one or more new active BFD sessions are selected from the one or more standby BFD sessions. In response to non-receipt of returned BFD messages for the one or more new active BFD sessions, it is determined that the link bundle has failed.


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