Excavating
Patent
1994-01-19
1996-08-20
Beausoliel, Jr., Robert W.
Excavating
371 682, G06F 1134, G06F 1540
Patent
active
055487203
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention generally relates to fault supervision methods for transmission apparatuses, and more particularly to a fault supervision method for a transmission apparatus that uses software to supervise faults in units of the transmission apparatus and line faults.
BACKGROUND ART
Fault supervision functions of the transmission apparatus include a process of periodically inspecting various faults of the transmission apparatus, managing fault generation and changes in recovery states, notifying the fault generation and the recovery and the like. When a unit fault or a line fault is detected by a hardware of the transmission apparatus, an input/output (I/O) map is formed in the I/O memory based on data output from the hardware. This I/O map indicates the fault/recovery state in real-time. A software of the transmission apparatus notifies the fault generation at each supervision point based on the I/O map to a maintenance person by turning ON a light emitting element or the like, or to a host apparatus. In addition, the software of the transmission apparatus also notifies state change information related to the fault/recovery state.
The notification of the state change information related to the fault/recovery state is carried out by a method called a change of status (COS) process which detects whether or not the same supervision state continues and detects the change related to the fault generation.
However, recently, the number of supervision items has increased considerably in order to realize an improved service of a fault supervision system of the transmission apparatus, and the tendency is that there are varieties of related processes. For this reason, it is becoming necessary to carry out a large number of complex processes within a short time, and there are increasing demands to realize a high-speed fault supervision process.
DISCLOSURE OF THE INVENTION
Accordingly, it is a general object of the present invention to provide a novel and useful fault supervision method for transmission apparatus, in which the demands described above are satisfied.
Another and more specific object of the present invention is to provide a fault supervision method for transmission apparatus, notifying a change in a fault/recovery state based on fault supervision result data related to a plurality of fault supervision items set in a memory, comprising the steps of (a) alternately setting the fault supervision result data at an arbitrary point in time and the fault supervision result data at a next point in time from the memory (10) into a first collection buffer and a second collection buffer, (b) setting present fault supervision result data into a double guard buffer only when the previous and present fault supervision result data set in the first and second collection buffers match for all fault supervision items, and (c) setting data indicating the fault supervision items for which the fault/recovery state changed into a transition point buffer based on the data set in the double guard buffer. According to the present invention, it is possible to prevent detection or the like of a fault which is instantaneously generated when the unit of the transmission apparatus is switched, because the double guard process is carried out.
Still another object of the present invention is to provide the fault supervision method for transmission apparatus described above, which further comprises the step of (d) setting a flag when the previous and present fault supervision result data set in the first and second collection buffers differ for at least one supervision item and otherwise clearing the flag, and omitting at least said step (c) when the flag is cleared for two successive points in time. According to the present invention, it is possible to greatly reduce the supervision process time by carrying out the flag discrimination process in a normal state where the change of the fault generation/recovery does not occur. When the flag discrimination process is carried out, it is possible to shorten the
REFERENCES:
patent: 3839707 (1974-10-01), Woodward et al.
patent: 4704714 (1987-11-01), Tomizawa et al.
patent: 5206860 (1993-04-01), Brown et al.
patent: 5237677 (1993-08-01), Hirosawa et al.
patent: 5280515 (1994-01-01), Nagatsu
patent: 5347646 (1994-09-01), Hirosawa et al.
Beausoliel, Jr. Robert W.
De'cady Albert
Fujitsu Limited
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