Electrical computers and digital processing systems: multicomput – Computer network managing – Computer network monitoring
Reexamination Certificate
2006-11-14
2006-11-14
Meky, Moustafa M. (Department: 2157)
Electrical computers and digital processing systems: multicomput
Computer network managing
Computer network monitoring
C370S242000
Reexamination Certificate
active
07136921
ABSTRACT:
A monitor (102) receives a returned response message, and stores the state of the link directed to the NE that returned the message as a successful transmission, and then repeats the same operation at arbitrary intervals. When the monitor can not receive the response message after placing a certain interval, it stores the link as an unsuccessful transmission. At this point, if all the links for a particular NE are in the unsuccessful state, the monitor informs an NMS (151) of a fault in that NE. If the NE truly has the NE fault, other NEs that also have the links to that fault NE inform the NMS of the fault. Thereby the NMS itself does not need to do the monitoring. The NMS only collates fault information with topology information stored in a topology information storage (153) and can judge that a particular NE is out of communication and control.
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Azuma Kazuhiko
Hayakawa Fumiyasu
Momma Hayato
Motobayashi Ryota
Meky Moustafa M.
NEC Corporation
The Tokyo Electric Power Company Incorporated
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