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:
Mar. 19, 2002

Filed:

Feb. 25, 1998
Applicant:
Inventor:

Masayuki Yamanaka, Kanagawa, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 1/228 ;
U.S. Cl.
CPC ...
H04L 1/228 ;
Abstract

The inside of a managed side device managed by a manager of a managing device has a tree-structure consisting of points # to # of the first to third layers. When a failure occurs, at the point # of the bottom layer, loss priority is allocated to a PDU and is transmitted to the point # in a higher order. When the number of PDUs is greater than the threshold of the number of alarms, at the point # a buffer is prevented from overflowing by instructing a lower order point not to transmit a PDU, or by eliminating PDUs with loss priority lower than the threshold of loss priority. By executing these processes at each point, congestion due to the concentration of PDUs can be locally processed.


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