JPH09200242A - Data distribution and transfer method - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To enable a high-order node in a tree-structured information communication network to perform data transfer corresponding to the load condition of the high-order node, concerning a data distribution transfer method for distributing and transferring data to the low-order node. The purpose is to do. According to a command from a maintenance center, a network management center transfers data to an upper node, and an upper node performs distributed transfer processing of the transferred data to subordinate lower nodes.
A first operation command is provided to specify which of the two setting modes, the automatic setting mode and the optional setting mode, is used to set the number of simultaneously distributed processing units. Configure to be able to determine the specified setting mode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data distribution / transfer method in which an upper node in an information communication network having a tree structure distributes and transfers data to lower nodes.

FIG. 11 is a diagram showing an example of an information communication network. As shown in FIG. 11, the information communication network is
For example, a network management center 13 that maintains and manages the entire network,
Business centers 121, 122, 123 that perform designated business tasks (for example, document delivery, print processing, etc.), nodes (hereinafter, packet switch) PBX, and users who only communicate with the business centers It _{consists of} terminals T ₂₂₁₁ and T _221n , maintenance center 11 which performs maintenance management of the whole network and the presence / absence of failures in packet switches and user terminals, etc. The more you install, the more.

[0003] when the network is operating normally, for example, a user communicates with the business center by using the user terminal T _{2 211,} have done goods orders, reminders of delivery, such as the current state of the inquiry .

However, due to factors such as hardware failure, data on the hard disk of the packet switch PBX (hereinafter,
In the case of destruction of the program) or when the program version is upgraded, the program of the corresponding exchange must be restored or replaced.

In such a case, the maintenance person may go to the place where the target packet switch is installed to perform the program recovery / replacement work, or use the program transfer function of the maintenance center 11. The program will be transferred.

In the former case, it takes a long time for the maintenance person to go to the site to carry out the work, and it is not desirable from the viewpoint that a human work error may occur. Therefore, it is general to transfer the program by remote control from the latter maintenance center. The program transfer can be done by the network management center according to the command from the maintenance center 11.
Transfer the program from 13 to the upper packet switch.

As a result, the upper packet switch divides the lower packet switch under it into several groups,
The program is simultaneously distributed and transferred to all packet switches in the same group, and this process is repeated to transfer the program to all lower packet switches under its control.

After that, the maintenance center 11 sends a program replacement command to each lower packet switch to replace or restore the program. At this time, as will be described later, it is necessary to enable program transfer corresponding to the load state of the upper packet switch.

[0009]

2. Description of the Related Art Now, a lower packet switch PBX _{221 to} PB of an information communication network having a tree structure as shown in FIG.
For the program transfer to X _{22n, the} network management center 13 transfers the program to the packet switch PBX ₂₂ according to a command from the maintenance center 11.

Therefore, the packet switch PBX ₂₂ has a subordinate n.
One packet switch is divided into m units, and the simultaneous distribution and transfer process of the program is performed for one divided group, but this simultaneous distribution and transfer process must be repeated m times.

On the other hand, although the packet switch PBX ₂₂ performs communication processing which is a normal business, when transferring a program, communication for transfer with the subordinate packet switch is required in addition to the normal business. I won't.

At this time, if the number of divisions is small, the number of lower-order packet exchanges in one division group increases, the load of the packet exchange PBX ₂₂ becomes heavy, and there is an influence such as restriction on normal communication processing. May be given.

If the number of divisions m is increased, the effect on communication processing is reduced, but the number of transfers increases and the transfer time increases.

[0014]

As described above, when the number of transfers is fixed to a small value during the simultaneous distribution and transfer processing of programs, a considerable load is generated in the upper packet switch PBX ₂₂ to cause a congestion state, and It was affecting communication.

From the point of view of reducing the load on the upper packet switch, it is only necessary to reduce the number of lower packet switches that perform the distribution transfer processing at the same time. However, by reducing the number of simultaneous distribution processing units, it takes a lot of time to complete the program transfer to all subordinate packet switches under the control.

On the other hand, when there is almost no communication between the upper packet switch PBX ₂₂ and the higher packet switch PBX ₂ , that is, when the steady load of the upper packet switch is low, the number of lower packet switch simultaneous distribution processing units Without reducing
Program transfer can be performed simultaneously with the current number of simultaneous distribution processing units.

In other words, conventionally, since the number of simultaneously distributed processing units is fixed, program transfer cannot be performed according to the load status of the upper packet switch, and normal communication may be affected depending on the load status at the time of program transfer. Become. An object of the present invention is to enable data transfer corresponding to the load status of an upper node (upper packet switch).

[0018]

FIG. 1 is a flow chart of processing when registering an arbitrary simultaneous distribution processing number by means 1, and FIG. 2 is means 2
FIG. 3 is a process flow chart when the simultaneous distribution process number determination identification is designated by FIG. 3, FIG. 3 is a process flow diagram when the simultaneous distribution process number determination identification is determined by the means 3, and FIG. Flow chart of process, Fig. 5
FIG. 9 is a processing flow chart when the number of arbitrarily simultaneous distributed processing units is registered by means 5.

According to the first aspect of the present invention, the network management center transfers data to the upper node in response to a command from the maintenance center, and the upper node simultaneously distributes the transferred data to the lower nodes under it. A first operation command is provided to specify which of the two setting modes, the automatic setting mode and the arbitrary setting mode, is used to set the number of processed units. Then, the upper node can determine the setting mode designated by the first operation command.

According to the second aspect of the present invention, a table showing the relationship of the simultaneous distribution processing numbers corresponding to various traffic usage rates is stored in the upper node. The upper node is the first
When it is determined that the operation command of is set to the automatic setting mode, the traffic usage rate of the local node is measured, and the optimal traffic distribution rate can be set from the table using the measured traffic usage rate. .

A third aspect of the present invention provides a second operation command for designating the number of simultaneous distribution processing units. When the first operation command is in the arbitrary setting mode, the maintenance person can arbitrarily set the number of simultaneous distribution processing units by using the second operation command.

According to a fourth aspect of the present invention, various traffic use rates are classified into N stages as the optimum number of simultaneous distribution processing units, and the value of the corresponding stage among the values set at each stage is used. did.

A fifth aspect of the present invention uses claims 1 and 3,
The speed of distributed transfer processing has been improved. The specific means for solving the above problem will be shown below. (1) Means 1 (see FIG. 1) -Provides a second operation command that can set the number of simultaneous distribution processing, and the maintenance person arbitrarily sets the number of simultaneous distribution processing using the second operation command, and the upper node Saves the set number of simultaneous distribution processing units in the main memory / auxiliary memory in its own node (Fig. 1-S1, S2). (2) Means 2 (see FIG. 2) ... Which of the first operation command and the first operation command specifies whether to set the number of simultaneous distribution processing units in the automatic setting mode or the arbitrary setting mode An identification flag is provided to identify whether the setting mode has been designated.

Then, the identification result of the identification flag is stored in the main storage device / auxiliary storage device of the upper node. For example, when the maintenance person specifies that the number of simultaneously distributed processing units is to be set in the automatic setting mode, the identification flag stored in the main storage device / auxiliary storage device becomes a state corresponding to the automatic setting mode (FIG. 2). -S1, S2). (3) Means 3 (see FIG. 3) -When distribution transfer processing occurs, it is determined whether the number of simultaneous distribution processing units is in the automatic setting mode or the arbitrary setting mode based on the identification result of the identification flag set by the above-mentioned means 2. Determine whether it is the setting mode.

For example, when the determination result is the automatic setting mode, the means 4 described later determines the number of simultaneous distribution processing units, and in the case of the arbitrary setting mode, the means 5 determines the number of simultaneous distribution processing types (FIGS. 3-S1 to S4). (4) Means 4 (see FIG. 4) ... When the automatic setting mode is discriminated by means 3, the traffic usage rate (steady load) is measured, and three levels are preset based on the measured traffic usage rate ( Set the number of simultaneous distribution processes from the value of (heavy load / medium load / small load).

Here, the traffic usage rate X ₁ ,
X ₂ is X ₂ > X ₁ , the number of simultaneous distribution processing units Y ₁ , Y ₂ and Y ₃ is Y ₃ > Y ₂ > Y ₁
And Now, measure the traffic usage rate and measure X ₀
(Fig. 4-S1). When X ₁ > X ₀ , the current communication load is small, and it is assumed that there is almost no effect on communication even if the number of simultaneous distribution processing units is increased, and it is set to Y ₃ (Fig. 4-S2-YES, S3). If X ₂ > X ₀ ≧ X ₁ , the current communication load is medium and the number of simultaneous distribution processing units is medium Y ₂ (Fig. 4-S2-NO, S4-Y
ES, S5). When X ₂ <X ₀ , the current communication load is large and the number of simultaneous distribution processing units is small, Y ₁ (Fig. 4-S4-NO, S6). (5) Means 5 (see FIG. 5) ... When the means 3 determines the arbitrary setting mode, the number of simultaneous distribution processing units is the number arbitrarily set by the second operation command. Since it is stored in the main storage device / auxiliary storage device of the node, this storage device is accessed and recognized (Fig. 5-S1, S
2).

As described above, by providing these means in the packet switch, the number of simultaneous distribution processing units can be set. As a result, it is possible to solve the problem that the normal communication is affected by the overload during the mass data distribution / transfer processing.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 6 is an explanatory view of processing when registering the number of simultaneous distribution processing units (in the case of an arbitrary setting mode), FIG. 7 is an explanatory view of processing when determining and registering the simultaneous distribution processing unit number, and FIG. And a process explanatory diagram for determining and determining the number of simultaneous distribution processing units after receiving a large amount of data, FIG. 9 is a process explanatory diagram of the distribution transfer processing number (in the automatic setting mode), and FIG. 10 is a process explanatory diagram of the distribution transfer processing number ( (In the case of arbitrary setting mode).

The same reference numerals indicate the same objects throughout the drawings. Further, the parts described in detail above will be briefly described, and the parts of the present invention will be described in detail. The operation of the embodiment will be described below with reference to FIGS.

First, the packet switch (upper node) shown in FIGS. 6 to 10 is a maintenance / operation processing unit 22 having an input / output processing unit 21, a command processing unit 221, a large amount of data control unit 222, and a traffic state management unit 223. A storage device 23 having a data table, a large amount of data storage area, etc. is provided.

The input / output control unit 21 performs interface conversion between the maintenance terminal 111 and the packet switch, and the command processing unit 221 writes processing for the first and second operation commands and simultaneous distribution processing number for the data table. The part that performs read / write, the mass data control unit 222 identifies in which setting mode the simultaneous distribution transfer is performed, and the part that performs the simultaneous distribution transfer control, the traffic state management unit 223
Is a part that calculates the traffic usage rate from the CPU usage rate / storage device usage rate.

Now, in FIG. 6, when the maintenance person uses the first operation command to specify that the simultaneous distribution process number is set in the arbitrary setting mode, the maintenance person further uses the second operation command. The number of distributed processing units is specified, and these commands are sent to the upper packet switch using the maintenance terminal 111 (see Fig. 6-).

Command processing unit 22 in the upper packet switch
1 sets the input simultaneous distribution processing number in the arbitrary simultaneous distribution processing number area of the data table provided in the storage device 23 (see Fig. 6-). Here, the usage example of the arbitrary setting mode is as follows. That is the case. A small unit (e.g.,
When performing a program transfer to a lower packet switch under its control (1 unit), checking the communication status, and then transferring the program to the remaining lower packet switches. When communication is affected, but the number of simultaneous distribution processing units is set to a large value and programs are transferred to all subordinate packet switches under control at one time.

In FIG. 7, the maintenance person uses the first operation command to specify either one of the automatic setting mode and the arbitrary setting mode for setting the number of simultaneously distributed processing units (see FIG. 7-). .

Command processing unit 22 in the upper packet switch
1 sets the simultaneous distribution processing number determination identification area in the storage device 23 to the identification state corresponding to the setting mode specified above (see FIG. 7-).

In FIG. 8, when a large amount of data (a program to be transferred) is transferred from the maintenance terminal 111 to the host packet switch, the large data control unit 222 in this switch stores the received large amount of data in the large data storage area 231. Store (see Figure 8-).

After that, when the large volume data control unit 222 confirms that all the large volume data has been received, the identification state stored in the simultaneous distribution processing unit number determination identification area of the above description is determined from among the automatic setting mode / arbitrary setting mode. Determine which setting mode it is (see Figure 8-).

In FIG. 9, when the determination of the setting mode is the automatic setting mode, the simultaneous distribution processing number determining unit 222a in the large volume data control unit is the traffic state management unit 223.
Inquires about the traffic usage rate, and determines the number of simultaneous distribution processing units using the traffic usage rate from the traffic status management unit (see Fig. 9-,).

In the automatic setting mode, the number of simultaneous distribution processing units for the traffic usage rate is predetermined as described above. On the other hand, when the determination result in FIG. 8 is the arbitrary setting mode, as described above, the number of simultaneous distribution processing units held in the arbitrary simultaneous distribution processing number area provided in the storage device 23 is read, and this number is referred to as simultaneous distribution processing number (Fig. 6, see Fig. _10-1).

The mass data controller 222 mass data stored in the memory, to implement the distribution transfer processing to the lower packet switch under using simultaneous dispensing process number determined in FIG. 9 or FIG. 10 ₁ (FIG. 9 - _2, see Figure _10-2)
. Incidentally, FIG. _9-2 is an automatic setting mode.

That is, when setting the number of simultaneous distribution processings of the distribution transfer processing in a large amount of data transfer, the distribution transfer processing is executed with a load commensurate with the steady load (automatic setting mode), or the number of simultaneous distribution processings is fixed. Although the load increases, it is possible to set a large number of simultaneous distribution processing units (arbitrary setting mode) in order to shorten the transfer completion time to the lower nodes, and distribute to the lower nodes on the tree structure network depending on the situation. Transfer processing (large volume data transfer) is possible.

[0042]

As described in detail above, according to the present invention, there is an effect that data transfer corresponding to the load condition of the upper node can be performed.

[Brief description of drawings]

FIG. 1 is a processing flow chart when registering an arbitrary simultaneous distribution processing number by means 1.

FIG. 2 is a processing flow chart when the number of simultaneous distribution processing units determination identification is designated by means 2;

FIG. 3 is a processing flow chart at the time of simultaneous identification processing number determination identification determination by means 3;

FIG. 4 is a processing flow chart when the simultaneous distribution processing number determination identification by means 4 is an automatic setting mode.

FIG. 5 is a processing flow chart at the time of registering an arbitrary simultaneous distribution processing number by means of means 5;

FIG. 6 is a diagram for explaining the processing when registering the number of simultaneously distributed processing units (in the case of the arbitrary setting mode).

FIG. 7 is an explanatory diagram of a process at the time of simultaneous distribution process number determination identification registration.

FIG. 8 is a processing explanatory diagram when receiving a large amount of data and performing simultaneous distribution processing number determination identification determination after receiving a large amount of data.

FIG. 9 is an explanatory diagram of the number of distributed transfer processing units (in the case of the automatic setting mode).

FIG. 10 is a processing explanatory diagram of the number of distributed transfer processing units (in the case of the arbitrary setting mode).

FIG. 11 is a diagram showing an example of an information communication network.

[Explanation of symbols]

 11 Maintenance center 13 Network management center 21 Input / output processing unit 22 Maintenance / operation processing unit 23 Storage device 111 Maintenance terminal 121, 122, 123 Business center 221 Command processing unit 222 Mass data control unit 222a Simultaneous distribution processing number determination unit 223 Traffic status Management Department

Claims (5)

[Claims] 1. An information network comprising a user terminal, a business center, a tree-structured node, and a maintenance center, wherein the user terminal and the business center communicate with each other through the tree-structured node. In response to a command from the maintenance center, when the network management center transfers data to the upper node and the upper node performs distributed transfer processing to the subordinate lower nodes, the number of simultaneous distribution processing units is set to the automatic setting mode. A first operation command that specifies which of the two setting modes of the arbitrary setting mode is to be used is provided so that the upper node can determine the setting mode specified by the first operation command. A data distribution and transfer method characterized in that 2. The upper node stores a table showing the relationship between the simultaneous distribution processing numbers corresponding to various traffic usage rates, and the upper node is set to specify the first operation command in the automatic setting mode. 2. The data distribution according to claim 1, wherein the traffic usage rate of the own node is measured when it is determined that the optimum number of simultaneous distribution processing units can be set from the table using the measured traffic usage rate. Transfer method. 3. When the first operation command is in the arbitrary setting mode, a second operation command for designating the number of simultaneous distribution processing units is provided, and the number of simultaneous distribution processing units is arbitrarily set by using the second operation command. The data distribution / transfer method according to claim 1, wherein the data distribution / transfer is possible. 4. As the optimum simultaneous distribution processing number, various traffic usage rates are classified into N stages, and the value of the corresponding stage among the values set in each stage is used. The data distribution and transfer method according to claim 2. 5. A data distribution transfer method according to claim 1, wherein the distribution transfer processing is speeded up.