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:
Feb. 22, 2011
Filed:
Aug. 18, 2003
Applicants:
Nobuyuki Enomoto, Tokyo, JP;
Masaki Umayabashi, Tokyo, JP;
Youichi Hidaka, Tokyo, JP;
Atsushi Iwata, Tokyo, JP;
Makoto Shibutani, Tokyo, JP;
Inventors:
Nobuyuki Enomoto, Tokyo, JP;
Masaki Umayabashi, Tokyo, JP;
Youichi Hidaka, Tokyo, JP;
Atsushi Iwata, Tokyo, JP;
Makoto Shibutani, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 12/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
A node that configures a spanning tree over a network to which a plurality of nodes are connected generates a tree after a cost change using another LAN while continuing to operate the tree that existed before the change, and switches the tree that is used for forwarding after the new tree has been stable.