JPH0432345A - Fault detection centralizing management system in multi-processor type exchange network - Google Patents

Abstract

PURPOSE:To eliminate the need for a private line by discriminating the presence of a fault depending on the presence of a reply to an acknowledge signal when the acknowledge signal is sent at a prescribed period to a master processor from a line accommodation processor and reporting it to a management sensor so as to confirm the presence of a fault of the master processor with the management center. CONSTITUTION:A line accommodation processor 112 discriminates the presence of a fault of a master processor 110 depending on the presence of a reply signal from the master processor 110, reports a discrimination result to a management center 3 and the management centre 3 manages centralizingly the state of all multi-processors 110-1n0. Thus, the normality confirmation function of the master processor being a criterion of a fault of each of multi-processor exchanges 11-1n being components of the multi-processor type exchange network is provided to the line accommodation processors 112-1n2 accommodating communication lines with the management center 3. Thus a private line to confirm the normality of the master processors 110-1n0 not directly accommodating any line is not required.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fault detection centralized management system in a multiprocessor type switching network.

[Conventional technology]

Conventionally, in a multiprocessor switching network that connects multiple multiprocessor switches and a single management center that centrally manages them through communication lines, a master processor serves as a criterion for determining failures in each multiprocessor switch. directly accommodates the communication line with the management center, and reports to the management center that it is normal at regular intervals.The management center checks whether the report has been received at regular intervals, and from each multiprocessor type switch. If there is no normality report a predetermined number of times within a predetermined period, the exchange is considered to be at fault.

[Problem to be solved by the invention]

The above-described conventional fault detection centralized management system in a multiprocessor type switching network has the disadvantage that the communication line becomes a dedicated line because it is necessary to directly accommodate the communication line in the master processor of each exchange.

[Means to solve the problem]

The fault detection centralized management method for a multiprocessor type switching network according to the present invention is directed to a fault detection centralized management method for a multiprocessor type switching network in which a plurality of multiprocessor type exchanges and a single management center that centrally manages them are connected via communication lines. In the detection centralized management method, each of the multiprocessor type exchanges includes a master processor that does not directly accommodate the communication line and a line accommodation processor that accommodates the communication line between it and the management center, which serves as a criterion for determining a failure;
When the line accommodation processor sends a confirmation signal to the master processor at regular intervals, it determines whether there is a failure or not based on the presence or absence of a response to the confirmation signal and reports it to the management center, and the management center The present invention is characterized in that the presence or absence of a failure in the master processor is confirmed based on the report. Further, the line accommodation processor monitors the timing from sending the confirmation signal to the master processor until receiving the response, and if the response is not received before a timeout, it indicates that the master processor is at fault. The information may be reported to the management center.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of a multiprocessor type switching network using a common line signaling system showing one embodiment of the present invention, and FIG. 2 is a sequence diagram of a failure detection operation in FIG. 1.

In FIG. 1, the switching network uses common lines 41 to 4n between a plurality of multiprocessor type exchanges 11 to 1n and one management center 3 that centrally manages them.

They are connected via a signal relay station 2 and a common line 5. In each multiprocessor type exchange, for example, the multiprocessor type exchange 11, a master processor 110 is connected to a line accommodation processor 112 via a communication bus 111,
The line accommodation processor 112 is connected to the signal relay station 2 via a common line 41.

Next, the fault detection operation of this embodiment will be explained with reference to FIG.

First, the line accommodation processor 112 transmits a confirmation signal a to the master processor 110 at regular intervals via the communication bus 111 and starts monitoring timing. When the master processor 110 receives the confirmation signal a, it returns a response signal to the line accommodation processor 112.

If the line accommodation processor 112 receives the response signal within a predetermined timing T, the common line 41. Signal relay station 2. A normality report C is sent to the management center 3 via the common line 5. At this time, the management center 3
is judged to be normal.

If an abnormality occurs in the master processor 110 (indicated by an X mark), the line accommodation processor 112 cannot receive the response signal. File a problem report d.

When the management center 3 receives the failure report d a predetermined number of times (for example, three times) within a predetermined time, it determines that there is a failure in the master processor 110 in the multiprocessor exchange 11. That is, the line accommodation processor 112 determines whether there is a failure in the master processor 110 based on the presence or absence of a response signal from the master processor 110, and reports the determination result to the management center 3, and the management center 3
Centrally manage the state of 0 to 1 nO.

[Effects of the Invention] As explained above, the present invention provides a function for confirming the normality of a master processor, which is a criterion for determining a failure in each multiprocessor type switching equipment constituting a multiprocessor type switching network, by improving communication between the master processor and the management center. By providing the line accommodating processor that accommodates the line, there is an effect that there is no need to provide a dedicated line for checking the normality of the master processor that does not directly accommodate the line.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a multiprocessor type switching network using a common line signaling system showing one embodiment of the present invention, and FIG. 2 is a sequence diagram of a failure detection operation in FIG. 1. 11, ~1n...Multiprocessor type exchange, 2...
- Signal relay station, 3... Management center, 41. ~4n...
・Common line, 110. ~1nO...master processor,
111, ~lnl...communication bus, 112. ~1n2・
... line accommodation processor, a... confirmation signal, b...
Response signal, C: Normal report, d: Failure report.

Claims (1)

[Scope of Claims] 1. A fault detection centralized management method in a multiprocessor type switching network in which a plurality of multiprocessor type exchanges and a single management center that centrally manages them are connected via communication lines, wherein each of the above-mentioned The multiprocessor type switch is equipped with a master processor that does not directly accommodate the communication line and a line accommodation processor that accommodates the communication line between it and the management center, which serves as a criterion for determining a failure, and the line accommodation processor is connected to the master processor. When a confirmation signal is sent at regular intervals, the presence or absence of a failure is determined based on the presence or absence of a response to the confirmation signal, and the result is reported to the management center, and the management center uses the report to determine whether or not there is a failure in the master processor. A fault detection centralized management method in a multiprocessor type switching network, which is characterized by checking. 2. The line accommodation processor monitors the timing from sending the confirmation signal to the master processor until receiving the response, and if the response is not received before a timeout, it indicates that the master processor is at fault. ,
2. The fault detection centralized management system in a multiprocessor type switching network according to claim 1, wherein the fault detection is reported to the management center.