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:
Sep. 27, 2011
Filed:
Feb. 19, 2008
Kazuma Yumoto, Fuchu, JP;
Hirofumi Masukawa, Isehara, JP;
Hitoshi Yoshida, Yokohama, JP;
Kazuhiro Kusama, Tokyo, JP;
Takuro Mori, Kokubunji, JP;
Kazuma Yumoto, Fuchu, JP;
Hirofumi Masukawa, Isehara, JP;
Hitoshi Yoshida, Yokohama, JP;
Kazuhiro Kusama, Tokyo, JP;
Takuro Mori, Kokubunji, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A failure detection protocol is applied so that failure detection requests for the same aggregated link can be processed even when the failure detection requests differ among routing protocols. The failure detection protocol is executed for each of the physical links that form an aggregated link, and a notification is sent to a higher-level application (for example, a routing protocol), which is a requesting source of a communication line failure monitoring request, with a discrimination between a case in which the communication of the aggregated link in its entirety fails and a case in which some physical links of the aggregated link fail.