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:
Mar. 06, 2001
Filed:
Aug. 07, 1998
Yumi Tanaka, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A spare one of a plurality of LAN emulation servers subscribes as a LAN emulation client for an operational one of the LAN emulation servers and supervises a condition of the operational server. If an abnormal condition of the operational server is detected, then the spare server issues an operational/spare changing over request to the operational server and is changed over to an operational server whereas the former operational server is changed over to a spare server. When the operational server is changed over to a spare LAN emulation server, it releases LAN emulation clients which have been subscribed for the operational LAN emulation server till then, and the released LAN emulation clients subscribe for the new operational LAN emulation server.