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. 22, 2015

Filed:

Mar. 07, 2011
Applicants:

Masayuki Sakata, Tokyo, JP;

Yukio Ogawa, Tokyo, JP;

Sayuri Kaneko, Tokyo, JP;

Kosuke Kaneko, Tokyo, JP;

Toshihiko Murakami, Tokyo, JP;

Yusuke Nishi, Tokyo, JP;

Osamu Takada, Tokyo, JP;

Inventors:

Masayuki Sakata, Tokyo, JP;

Yukio Ogawa, Tokyo, JP;

Sayuri Kaneko, Tokyo, JP;

Kosuke Kaneko, Tokyo, JP;

Toshihiko Murakami, Tokyo, JP;

Yusuke Nishi, Tokyo, JP;

Osamu Takada, Tokyo, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/24 (2006.01); H04L 12/707 (2013.01);
U.S. Cl.
CPC ...
H04L 41/0816 (2013.01); H04L 41/00 (2013.01); H04L 41/065 (2013.01); H04L 45/24 (2013.01);
Abstract

A network management apparatus is designed so that when reassigning the existing address, the network management apparatus extracts a link with the largest link cost from among links comprising the network based on the network configuration information and specifies a flow routed though the extracted link based on the statistic information; when receiving a path change request and a via link request to request a via link with respect to the specified flow from an external terminal, the network management apparatus selects either one of addresses of an address pair of the specified flow as a change target address; and when changing the selected change target address, the network management apparatus changes the change target address to a candidate address to be assigned by selecting an address, which is routed through a link included in the via link request and has not been assigned, as the candidate address to be assigned.


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