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:
Jun. 28, 2016

Filed:

Aug. 31, 2015
Applicant:

Level 3 Communications, Llc, Broomfield, CO (US);

Inventors:

William Thomas Sella, Parker, CO (US);

James Michael Sella, Parker, CO (US);

Assignee:

Level 3 Communications, LLC, Broomfield, CO (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/751 (2013.01); H04L 12/24 (2006.01); H04L 12/721 (2013.01); H04L 12/741 (2013.01);
U.S. Cl.
CPC ...
H04L 45/02 (2013.01); H04L 41/12 (2013.01); H04L 45/26 (2013.01); H04L 45/54 (2013.01);
Abstract

In an embodiment, a method exchanges routing data within a network including control and forwarding on separate devices. In the method, a first reachability information session is established between a forwarding device and a first control device and a second reachability information session is established between the forwarding device and a second control device. Also, a third reachability information session is established between the forwarding device and an external routing device. Finally, advertisements are exchanged between the first and second reachability information sessions and the third reachability information session such that the first and second control device appear to the external routing device to be a single device. System and computer program product embodiments are also disclosed.


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