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:
Jul. 12, 2016

Filed:

Aug. 19, 2011
Applicant:

Toshio Koide, Tokyo, JP;

Inventor:

Toshio Koide, Tokyo, JP;

Assignee:

NEC Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 12/26 (2006.01); H04L 12/717 (2013.01); H04L 12/24 (2006.01); H04L 12/751 (2013.01); H04L 12/931 (2013.01); H04L 12/725 (2013.01); H04L 12/937 (2013.01);
U.S. Cl.
CPC ...
H04L 45/42 (2013.01); H04L 41/12 (2013.01); H04L 45/02 (2013.01); H04L 45/30 (2013.01); H04L 49/253 (2013.01); H04L 49/70 (2013.01);
Abstract

The control unit specifies an undetected connection destination port and sends a reply request to a connection destination of the undetected connection destination port. The packet transfer unit determines whether the received reply request is to be transferred to any other packet transfer unit. The packet transfer unit, upon determining the reply request to be transferred to any other packet transfer unit, transfers the reply request to any other packet transfer unit. The packet transfer unit, upon determining the reply request not to be transferred to any other packet transfer unit, returns a reply that includes information on ports of the local packet transfer unit, the reply being sent along a path leading to the control unit.


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