JPH0380734A - Communication processor - Google Patents

Abstract

PURPOSE:To execute the switching processing to an alternate communication processor without executing a load processing of a control program by actuating selectively plural control programs stored in a storage means. CONSTITUTION:When a fault is generated in a communication processor 22, a central processor equipment 20 issues a switching instruction to a communication processor 24 and a circuit switching device 28, and instructs an alternation of the communication processor 22 and a connection of a circuit group 27 and a circuit group 29, to the communication processor 24 and the circuit switching device 28, respectively. In accordance with this instruction, a host channel 4 allows a main storage switching part 3 to select a main storage 9 by a control line 11, and when this selection processing is completed, an actuation of an initialization processing of the communication processor is instructed to a control part 1 through an internal bus 2. The control part 1 executes a control program stored in the main storage part 9, succeeds to the processing of the communication processor 22 after the initialization processing is ended, and continuous the communication processing of a computer system.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a communication processing device for a combiator system,
In particular, it relates to a startup method for a communication processing device.

[Conventional technology]

Conventionally, this type of communication processing device has only one set of main memory. Therefore, in order to change the programmatic commands of this communication processing device, the control program for the communication processing device with a different configuration must be reloaded into the main memory from the host information processing device, or the communication processing device must be connected to the host information processing device. There was only a means to selectively load the control program into the main memory from the auxiliary memory of a disk device or the like.

[Problem to be solved by the invention]

However, in the above method, the time from the start of loading the control program to the completion of startup by loading the control program of the communication processing device from the auxiliary storage device of the host information processing device or the communication processing device and changing the program configuration is The load time of a control program occupies a large part of the load time, and with the recent increase in the capacity of control programs, shortening this load time has become a major issue.

In particular, in computer systems that connect multiple communication processing devices, it is common practice to configure the communication processing devices redundantly so that if the currently used communication processing device fails, it is switched to a backup communication processing device to continue communication processing. It is being In this method, the backup communication processing device is required to have the same hardware and software configuration as the failed communication processing device, and one backup communication processing device is required for multiple active communication processing devices. When dealing with the problem using a processing device, a control program corresponding to the failed communication processing device is selected and loaded onto a spare communication processing device to perform alternative processing.

Therefore, this switching process needs to be done quickly.
In particular, shortening the load process of the control program is an important issue.

[Means to solve the problem]

The tR precept of the communication control device of the present invention includes a plurality of storage means for storing a control program for a communication processing device of a program storage type connected to a host information processing device, and one of the plurality of storage means is selected. and a means for activating initialization processing after instructing the selection means to select, and selectively activating a plurality of control programs stored in the storage means. It is characterized by

〔Example〕

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

FIG. 1 is a block diagram of a communication processing device to which the present invention is applied, and this communication processing device includes a control section 1, an internal bus 2 of this communication processing device, and a main memory switching section 3 connected to the internal bus 2.
, host channel 4, communication control units 5, 6.7, main memory units 8, 9.10 connected to main memory switching unit 3, and line connection units 12 to N connected to communication control units 5, 6.7. It is composed of. The main memory switching section 3 is connected to the host channel 4 by a control line 11, and a main memory section selection switching instruction is issued from the host channel 4 via this control line 11. connected with a central processing unit channel device that is not connected.

Further, FIG. 2 is a diagram showing a computer system to which the above-mentioned communication processing device is connected, in which the central processing unit 20 connects the above-mentioned communication processing devices 22, 23, and 24 to a channel device 21 having a plurality of ports. . and communication processing unit W
Line groups 25, 26, and 27 connected to lines 22, 23, and 24 are selectively connected to line group 29, 30 by line switching device 28.

In this computer system, communication processing device 22.2
3 is operated as an active device, and the communication processing device 24 is operated as a standby device, and the line switching device 28 normally connects the line group 25 and the line group 29, and the line group 26 and the line group 30. Control programs corresponding to the communication processing devices 22 and 23 are stored in advance in the main storage units 9 and 10 of the communication processing device 24, respectively.

In a computer system configured in this way, if a failure occurs in the communication processing device 22, the central processing unit 20
detects an abnormality in the communication processing device 22 and restarts the communication processing device 24.
and issues a switching instruction to the line switching device 28, instructing the communication processing device 24 to replace the communication processing device 22, and instructing the line switching device 28 to connect the line group 27 to the two line groups.

The communication processing device 24 detects this switching instruction on the host channel 4, and in response to this instruction, the host channel 4 causes the main memory switching section 3 to select the main memory 9 via the control line 11, and when this selection process is completed, the internal bus 2 is switched on. The control unit 1 instructs the control unit 1 to start initialization processing of the communication processing device. Control part 1
executes the control program stored in the main storage section 9, and after the initialization process is completed, takes over the processing of the communication processing device 22 and continues the communication processing of the computer system.

〔Effect of the invention〕

As explained above, according to the present invention, switching to an alternative communication processing device can be performed without loading the control program to the communication processing device, thereby reducing the time required for the conventional control program loading process. The switching processing time can be shortened by that amount, and processing can be performed more quickly than before.

In addition, if the computer system is operated by storing the control program for each communication processing unit in the main memory of each communication processing unit in advance, it is possible to operate the computer system without specifying the current machine/alternative machine, allowing flexible system operation. There is also the effect of becoming.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a communication processing device to which the present invention is applied;
FIG. 2 is a block diagram showing a computer system to which the communication processing device is connected. DESCRIPTION OF SYMBOLS 1... Control unit, 2... Internal bus, 3... Main memory switching unit, 4... Host channel, 5, 6.7...
Communication control unit, 8, 9.10... Main storage unit, 11...
Control line, 12-N...Line connection section, 20...Central processing unit, 21...Channel device, 22, 23.24.
...Communication processing device, 25, 26.27...Line group, 2
8... Line switching device, 29.30... Line group.

Claims (1)

[Claims] a plurality of storage means for storing control programs for a program storage type communication processing device connected to a host information processing device; a selection means for selecting one of the plurality of storage means to serve as a main memory; 1. A communication processing device comprising: means for activating initialization processing after instructing a selection means to select, and selectively activating a plurality of control programs stored in said storage means.