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:
Nov. 24, 2015

Filed:

Aug. 05, 2013
Applicant:

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

Inventors:

John Joseph Mullooly, Colts Neck, NJ (US);

Ali Sajassi, San Ramon, CA (US);

Pradosh Kumar Mohapatra, Fremont, CA (US);

Samer M. Salam, Vancouver, CA;

Assignee:

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

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 12/933 (2013.01); H04L 12/775 (2013.01); H04L 12/715 (2013.01);
U.S. Cl.
CPC ...
H04L 49/15 (2013.01); H04L 45/58 (2013.01); H04L 45/04 (2013.01);
Abstract

In an embodiment, a method of signaling status at a routing device is provided. In this method, the routing device establishes an inter-chassis control plane channel session with a remote routing device. Here, the routing device and the remote routing device are linked to a multi-homed routing device. The routing device then synchronizes with the remote routing device by way of the inter-chassis control plane channel session to identify a state of a link from the routing device to the multi-homed routing device. The state of the link is thereafter advertised by way of Border Gateway Protocol (BGP). Additionally, a method of discovering inter-chassis communication peers via BGP between the first and remote routing devices is provided.


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