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:
Dec. 18, 2018

Filed:

Nov. 17, 2016
Applicant:

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

Inventors:

Sathish Srinivasan, Fremont, CA (US);

Vrishabha Sikand, Lexington, MA (US);

Shyam N. Kapadia, San Jose, CA (US);

Upendra N. Moholkar, San Jose, CA (US);

Assignee:

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

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/28 (2006.01); H04L 12/753 (2013.01); H04L 12/24 (2006.01); H04L 12/44 (2006.01); H04L 12/741 (2013.01);
U.S. Cl.
CPC ...
H04L 45/48 (2013.01); H04L 12/44 (2013.01); H04L 41/12 (2013.01); H04L 45/745 (2013.01);
Abstract

A border leaf of a software defined computer network receives network traffic directed to a first endpoint from a second endpoint. The first endpoint is connected to the software defined network, and the second endpoint is external to the software defined network. If the border leaf determines that it does not have a stored network route for an active conversation between the first endpoint and the second endpoint, the border leaf determines a valid network route for the network traffic to reach the first endpoint. The border leaf stores the valid network route and forwards the network traffic to the first endpoint. The border leaf transmits a synchronization message to other border leaf nodes of the computer network. The synchronization message causes the other border leaf(s) to store the valid network route and an indication that the original border leaf is forwarding the network traffic in the active conversation.


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