JP3212059B2 - Remote IPL malfunction prevention method and apparatus therefor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to communication technology and, more particularly, to a remote IPL in which a communication control device with a system down is started and started by a remote maintenance center or the like.

[0002]

2. Description of the Related Art When a communication control device whose system is down is started from a remote maintenance center or the like, a conventional remote IPL is used.
In the (start-up and start-up) system, the communication control device has an emergency control mechanism therein, and the transmission of the remote IPL request signal from the emergency control mechanism to the remote maintenance center indicates that the remote IPL request signal is transmitted. Condition.

[0003] In this conventional system, when a communication control device is in an online state or when the communication control device is starting up autonomously, a maintenance center remote from an emergency control mechanism due to some failure. In some cases, a remote IPL request signal is transmitted to the communication control device, and in this case, the communication control device is erroneously IPLed (started up and started).

[0004]

In the above conventional example,
When the communication control device is online,
L, there is a problem that communication is interrupted.
If the communication control device is erroneously IPLed during the autonomous start-up, there is a problem that the start-up operation itself is not normally executed.

According to the present invention, when a communication control device is in an online state or when the communication control device is starting up autonomously, an emergency control mechanism sends a signal to a remote maintenance center due to some failure. It is an object of the present invention to provide a remote IPL malfunction prevention method and apparatus thereof that do not perform IPL even when a remote IPL request signal is transmitted.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a communication control device with a system down is operated by a remote maintenance center or the like.
When performing a remote IPL to perform a PL, when the communication control device receives a remote IPL instruction signal from a remote maintenance center,
The internal state managed by the maintenance management processor is remote I
The IPL is performed only when a PL request has been made and the number of autonomous start-ups by the emergency control mechanism is a specified number.

[0007]

According to the present invention, when a remote maintenance center or the like carries out a remote IPL for a communication control device whose system is down, the communication control device transmits the remote IPL from the remote maintenance center.
When the internal state managed by the maintenance management processor is performing a remote IPL request when the PL instruction signal is received, and the number of autonomous start-ups by the emergency control mechanism is the specified number of times, Since only IPL is performed, when the communication control device is in an online state or when the communication control device is autonomously starting up, the emergency control mechanism sends a signal to the remote maintenance center due to some failure. Even if the remote IPL request signal is sent, it will not be IPLed.

[0008]

FIG. 1 is a block diagram showing an embodiment of the present invention.

In this embodiment, a maintenance center 10 and a communication control device 20 are connected by a maintenance signal transfer signal line 30, the maintenance center 10 has a maintenance terminal 11, and the communication control device 20 It has a function module 22 and an emergency control mechanism (EMA) 24.

The maintenance management unit 21 includes a maintenance management processor 21
P, and the maintenance management unit 21 and the function module 22
It is connected by a transfer signal line 23 of a PL (start-up start) signal, that is, the transfer signal line 23 of the IPL is transmitted from the maintenance management processor 21P to each function module 22 by a remote IP.
This is a signal line for transferring the L signal.

The emergency control mechanism (EMA) 24 performs autonomous start-up and startup by hardware when the communication control unit 20 goes down.

The maintenance management processor 21P sends a remote IPL request signal to the remote maintenance center 10 after the autonomous start-up is repeated a predetermined number of times. That is, the maintenance management processor 21P
Is an example of a start request signal transmitting means for transmitting a remote IPL request signal to a remote maintenance center after the self-sustaining start-up is repeated a predetermined number of times.

Further, when receiving a remote IPL instruction signal from the remote maintenance center 10, the maintenance management processor 21P sends a remote IPL request signal from the emergency control mechanism 24. This is an example of a means for validating a remote IPL instruction signal from a remote maintenance center 10 only when a typical startup has been executed a predetermined number of times.

The maintenance signal transfer signal line 30 is a signal line for transferring a maintenance signal such as alarm information between the maintenance center 10 and the maintenance management processor 21P.

Next, the operation of the above embodiment will be described.

FIG. 2 is a flowchart showing a self-sustaining startup process executed by the emergency control mechanism 24 in the above embodiment.

When a system down occurs in the communication control device 20 (S1), the emergency control mechanism 24 executes the first autonomous startup by hardware (S1).
2) Subsequently, the emergency control mechanism 24 executes a second self-sustaining start-up by hardware (S)
3) Hereinafter, the same autonomous start-up is performed for the x-th time (the number x is a predetermined number of times) (S4), and the autonomous start-up of the specified number x is performed. If the system of the communication control device 20 does not start up even if executed, alarm information including an autonomous start-up start count and a remote IPL request signal is sent to the maintenance terminal 11 in the remote maintenance center 10. The maintenance management processor 21P sends it out (S5) and ends.

On the other hand, in the maintenance center 10, the remote IPL request signal included in the alarm information transferred from the maintenance management processor 21 P of the communication control device 20 and the autonomous start-up count have reached a specified value. After checking
A remote IPL instruction signal is sent to the maintenance management unit 21 in the communication control device 20.

FIG. 3 shows a remote IPL in the above embodiment.
It is a flow chart which shows operation of maintenance management processor 21P at the time of receiving an instruction signal.

The remote IPL instruction signal transmitted from the maintenance terminal 11 in the maintenance center 10 is transmitted to the maintenance management processor 21P.
Is received (S11), and the maintenance management processor 21P
Executes the remote IPL when the internal state has transmitted the remote IPL request signal (S12) and the number of autonomous start-ups is the specified number x (S13) (S14). In other words, the communication control device 20 performs self-activation and sends an IPL signal to the function module 22.
(Startup and startup).

In the above embodiment, when the IPL of the communication control unit 20 whose system is down is performed from the remote maintenance center 10, when the communication control unit 20 receives the remote IPL instruction signal from the remote maintenance center 10, the maintenance is performed. Only when the condition that the internal state managed by the management processor 21P is performing a remote IPL request and the condition that the number of autonomous IPLs by the emergency control mechanism 24 is a specified number are satisfied, the IPL is performed. Is performed, the IPL is not performed when the communication control device 20 is in the online state, or the communication control device 20 is activated when the communication control device 20 is performing autonomous startup. Not
Therefore, erroneous activation of the communication control device 20 can be prevented.

That is, the start condition of the remote IPL in the conventional method is that the communication control device sends a remote IPL to the remote maintenance center.
Although only the PL request signal is transmitted, the remote IPL activation condition in the above embodiment is determined by the maintenance management processor when the communication control device receives the remote IPL instruction signal from the remote maintenance management center. Not only is the internal state of sending a remote IPL request signal, but also the autonomous IPL count is a specified count.

In the above embodiment, the maintenance management processor serves as a start request signal transmitting means for transmitting a remote IPL request signal to a remote maintenance center after the autonomous start-up by the emergency control mechanism is repeated a predetermined number of times. 21
Although P is used, a circuit or the like other than the maintenance management processor 21P may be newly provided and used as a start request signal sending unit. Further, in the above embodiment, when a remote IPL instruction signal is received from a remote maintenance center, a remote IPL request signal is transmitted from the emergency control mechanism. The maintenance management processor 21P is also used as a means for validating the remote IPL instruction signal received from the remote maintenance center only when the maintenance management processor 21P is executed, but a circuit or the like other than the maintenance management processor 21P is newly added. And may be used as a means for validating the remote IPL indication signal.

[0024]

According to the present invention, when the communication control device is on-line or when the communication control device is starting up autonomously, the emergency control mechanism is remote from the emergency control mechanism due to some failure. IPL to maintenance center
Even if the request signal is transmitted, there is an effect that IPL is not performed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a flowchart showing a self-sustaining startup process executed by an emergency control mechanism 24 in the embodiment.

FIG. 3 is a flowchart showing the operation of the maintenance management processor 21P when receiving a remote IPL instruction signal in the embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Maintenance center, 11 ... Maintenance terminal in maintenance center, 20 ... Communication control unit, 21 ... Maintenance management unit, 21P ... Maintenance management processor in maintenance management unit, 22 ... Function module in communication control unit, 23 ... Maintenance management processor 21P , A signal line for transferring a remote IPL signal to each functional module 22; 24, an emergency control mechanism; 30, a signal line for transferring a maintenance signal such as alarm information between the maintenance center 10 and the maintenance processor 21P.

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H04L 29/14 H04L 12/00

Claims (2)

(57) [Claims] 1. A communication control method in which an emergency control mechanism performs autonomous start-up by hardware when a communication control device goes down, the autonomous start-up by the emergency control mechanism being repeated a predetermined number of times. The communication control device sends a remote IPL request signal to the remote maintenance center after the communication, and the communication control device transmits the remote IPL request signal from the remote maintenance center.
Only when the emergency control mechanism has sent the remote IPL request signal when the L instruction signal is received and the autonomous start-up by the emergency control mechanism has been performed the predetermined number of times, A remote IPL characterized by enabling a remote IPL from the remote maintenance center.
Malfunction prevention method. 2. The communication control device according to claim 1, wherein the emergency control mechanism performs autonomous start-up by hardware when the communication control device goes down. After the remote
Activation request signal sending means for sending a PL request signal; when the remote IPL instruction signal is received from the remote maintenance center, the emergency control mechanism sends the remote IPL request signal; Means for validating the remote IPL instruction signal received from the remote maintenance center only when the autonomous start-up by the mechanism has been executed the predetermined number of times, and remote IPL malfunction prevention. apparatus.