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.
Patent No.:
Date of Patent:
Aug. 21, 2018
Filed:
Aug. 01, 2014
Applicant:
Cisco Technology, Inc., San Jose, CA (US);
Inventors:
Chiajen Tsai, Cupertino, CA (US);
Norman Finn, Livermore, CA (US);
Yibin Yang, San Jose, CA (US);
Nagabhushan K. Channabasappa, Santa Clara, CA (US);
Debashis Patnala Rao, Cupertino, CA (US);
Assignee:
Cisco Technology, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 15/16 (2006.01); H04L 12/24 (2006.01); H04L 12/721 (2013.01); H04L 12/46 (2006.01);
U.S. Cl.
CPC ...
H04L 41/0816 (2013.01); H04L 41/12 (2013.01); H04L 45/66 (2013.01); H04L 12/4687 (2013.01); H04L 12/4695 (2013.01);
Abstract
In one embodiment, a method includes detecting a change in network topology and broadcasting a transient unconditional unpruning message to multiple nodes in the network. The message is configured to instruct each of the nodes receiving the message to start a phase timer in response to the broadcast message; unprune its operational ports; and, upon expiration of the phase timer, prune its ports in accordance with the results of a pruning protocol.