JPH11154967A - Control system for network management traffic transmission band width - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a data transmission efficiency by selecting constant and narrow transmission band width for network management data to be transferred without causing a transfer delay of transmission data due to congestion incurred in connection with LANs and WANs of different transmission speed. SOLUTION: An agent 30 and a manager 32 are interfaced through pluralities of network of different channel transmission speeds (a channel 33 at a low transmission speed and a channel 34 at a high transmission speed). A gateway 31 controlling the transmission band width is provided between the channel 33 of a low transmission speed and the channel 34 of a high transmission speed. The transmission band width of a traffic of the network management data from the agent 30 is transferred without any modification or controlled to become a prescribed narrow transmission band width by the gateway 31 for transferring to the network.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to a local area network (LAN) having different line transmission speeds and access control systems such as Ethernet and FDDI (Fiber Distrbuted Interface), as well as a wide area network (WAN). The present invention relates to a network management traffic transmission bandwidth control system that controls a transmission bandwidth of network management data indicating an operating state from a network to a predetermined small transmission bandwidth.

[0002]

2. Description of the Related Art Conventionally, this kind of Ethernet and FDD
Between local area networks having different line transmission speeds and access control methods such as I, routers and bridges are used to manage logical configuration changes and traffic states of the entire network through protocol conversion. In addition, when the transmission method is more complicated than Ethernet and FDDI, for example, when connecting local area networks for transmitting data, audio data and video data and having different protocol conversions, or connecting local area networks and wide area networks, A gateway that performs a protocol conversion that is more advanced than a router or a bridge is provided at the connection unit.

In such a data communication network,
The terminal device (hereinafter, appropriately referred to as an agent) transmits network management data together with the data here. The network management data is, for example, data indicating the occurrence of a failure in the terminal device, operation / time (between time) data indicating the operation status of the terminal device in units of time, and the like. The terminal device manages the network management data through a protocol conversion relay device (hereinafter, appropriately referred to as a gateway, a router, or a bridge) through a protocol management relay device (hereinafter, referred to as a manager, as appropriate), that is, a network. And sending it to the host computer that collects the data. Further, various data (hereinafter, appropriately referred to as transmission data) are transmitted from the higher-level management device to the terminal device through the protocol conversion relay device.

In this data communication network, when the Ethernet LAN, the FDDI LAN and the wide area network (WAN) are connected as described above, the line transmission speed may be largely different between the local area network and the wide area network. . For example, if the line transmission speed is 10 Mb
ps, 100 Mbps. In this case, the line transmission speed is 1M together with the transmission data.
When network management data of bps is transmitted at the same time, if the line transmission speed is 100 Mbps, there is no problem because the line transmission speed ratio of transmission data / network management data is small, but if the line transmission speed is 10 Mbps, The line transmission rate ratio may increase, causing congestion in transmission and reception of transmission data. That is, the original communication may not be performed, and, for example, transmission / reception of transmission data from the terminal device or the upper management device is greatly delayed.

[0005]

As described above, in the above-mentioned conventional example, the local area network and the wide area network are connected to each other so that the line transmission speeds thereof are different and the line transmission speed ratio of the transmission data / network management data. Is large, the transmission and reception of transmission data from the terminal device and the higher-level management device are disadvantageously delayed.

[0006] The present invention solves the above-mentioned problems in the prior art, and manages a network when a local area network (Ethernet, FDDI) and a wide area network (WAN) having different line transmission speeds are connected. Network transmission traffic that improves the data transmission efficiency without delaying transmission / reception of transmission data from the terminal device and the higher-level management device because the transmission bandwidth of data for use can be fixed to a predetermined small transmission band. The purpose is to provide a bandwidth control system.

[0007]

According to a first aspect of the present invention, there is provided a network management traffic transmission bandwidth control system according to the first aspect of the present invention, wherein a terminal device and a higher-level management device use a plurality of networks having different line transmission speeds. And a protocol conversion relay device for changing the transmission bandwidth between the plurality of networks is provided. The protocol conversion relay device transmits the network management data traffic transmission bandwidth from the terminal device as it is. The configuration is such that the data is transferred in a bandwidth or controlled to a predetermined small transmission bandwidth and transferred to a network.

According to a second aspect of the present invention, in the network management traffic transmission bandwidth control system, the agent of the terminal device executes a network management program for generating at least a fault and network management data indicating an operation state of the terminal device. And a transfer amount control unit for controlling the transmission bandwidth of the network management data to a predetermined constant value for transfer.

According to a third aspect of the present invention, there is provided the network management traffic transmission bandwidth control system, wherein the gateway of the protocol conversion repeater transfers the network management data by controlling the transmission bandwidth to a predetermined constant value. The configuration includes a control unit.

According to a fourth aspect of the present invention, in the network management traffic transmission bandwidth control system, the manager of the upper management device includes a network management program execution unit that receives at least network management data and transmission data from the terminal device. There is.

The network management traffic transmission bandwidth control system according to claim 5, wherein the manager of the upper management device generates a network management data indicating at least the occurrence of a failure and the operation status of the terminal device. The configuration further includes an execution unit and a transfer amount control unit for controlling the transfer bandwidth of the network management data to a predetermined constant value for transfer.

According to a sixth aspect of the present invention, in the network management traffic transmission bandwidth control system, a data receiving unit for receiving network management data and the network management data received by the data receiving unit are stored as the transfer amount control unit. A reception data storage unit, a data transmission unit for extracting the network management data stored in the reception data storage unit as transmission data, and transmitting the data, and the data transmission unit sets the transmission bandwidth of the network management data traffic. Controlling and transferring to a predetermined small transmission bandwidth,
Alternatively, a configuration including a data transmission control unit that performs control for transmission with the same transmission bandwidth, and a control message reception unit that receives a control message indicating whether reception is possible from a transfer destination device and sends the control message to the data transmission control unit There is.

According to a seventh aspect of the present invention, in the network management traffic transmission bandwidth control system, when controlling the transmission bandwidth of the traffic of the network management data from the terminal device to a predetermined small transmission bandwidth, The transmission time is changed until the next network management data acquisition process after transmission, so that the line transmission speed is reduced and made constant.

In the network management traffic transmission bandwidth control system according to the present invention, when the line transmission speed is slowed down to a constant value, the network management data transmission waits until the next network management data acquisition process after transmission of the network management data. The time is calculated by “transmission data length / (line transmission speed × network management traffic occupancy)”.

According to a ninth aspect of the present invention, there is provided the network management traffic transmission bandwidth control system, wherein the data transmission control unit in the transfer amount control unit controls the transmission bandwidth of the traffic of the network management data to a predetermined small transmission bandwidth. In this configuration, a line information table in which the relationship between the line transmission speed of each network and the traffic occupancy of the network management data is stored in advance.

The network management traffic transmission bandwidth control system according to claim 10, wherein the reception data storage unit of the transfer amount control unit sets the reception impossible flag to the agent of the terminal device when the network management data is too large to be stored. Alternatively, the agent is transmitted to the gateway of the protocol conversion relay device via the network, and the agent of the terminal device or the gateway of the protocol conversion relay device that receives the reception failure flag stops the transfer of the network management data.

A network management traffic transmission bandwidth control system according to claim 11, wherein a plurality of the protocol conversion relay devices are provided for each of the networks in a plurality of networks, and each of the protocol conversion relay devices is used for network management from a terminal device. The transmission bandwidth of data traffic is transferred as it is, or the transmission bandwidth is controlled to a predetermined small transmission bandwidth and transferred to each network.

The network management traffic transmission bandwidth control system according to claim 12, wherein the network is at least an Ethernet local area network, an FDDI local area network, or an AT.
It is configured as a wide area network including M-cell relay B-ISDN, frame relay and SMDS.

A network management traffic transmission bandwidth control system according to a thirteenth aspect is configured such that the protocol conversion relay device is provided in a router or bridge that controls and manages a traffic state through at least protocol conversion.

According to a fourteenth aspect of the present invention, there is provided a network management traffic transmission bandwidth control system, wherein the protocol conversion relay device performs at least a protocol conversion control which is more advanced than a router or bridge which controls and manages a traffic state through protocol conversion. The configuration is provided in the gateway to be connected.

The network management traffic transmission bandwidth control system having such a configuration controls the transmission bandwidth of the traffic of network management data between a plurality of networks having different line transmission speeds, particularly to a predetermined small transmission bandwidth. doing.

As a result, when a local area network (Ethernet, FDDI) and a wide area network (WAN) having different line transmission speeds are connected, the transmission bandwidth of the network management data is fixed to a predetermined small transmission bandwidth. Will be able to Therefore, the transmission and reception of the transmission data from the terminal device and the higher-level management device are not delayed in a congestion state or the like, and the data transmission efficiency is improved.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a network management traffic transmission bandwidth control system according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a data communication network to which a network management traffic transmission bandwidth control system according to a first embodiment of the present invention is applied.

This data communication network is an Ethernet LAN accommodating terminal devices T1, T2, etc.
1 and 2 are connected to the FDDI LAN 5 through the routers 3 and 4. Further, the router 6 of the FDDI LAN 5 is connected to the router 11 and connected to the Ethernet LAN 10 accommodating the terminal device T3.

This data communication network has F
A gateway 15 is connected to the router 14 of the DDI LAN 5, and the gateway 15 is connected to the ATM cell relay type B-ISDN, frame relay, SMDS (Switched).
Wide area network (WA) that accommodates Multimegabit Data Service
N) 16 are connected. The wide area network 16 is further connected to an Ethernet LAN 18 having a router 17. Terminal devices 22 and 23 are connected to routers 20 and 21 of the FDDI LAN 5, respectively, and a terminal device 25 is connected to the wide area network 16.

Ethernet LANs 1, 2, 10, 18
Is, for example, a line transmission speed of 10 Mbps, and FDD
The I.LAN 5 has a line transmission speed of 100 Mbps. The wide area network (WAN) 16 has a transmission speed of 45 Mbps. Routers 3, 4, 6, 11, 14, 17, 20, 21
Controls and manages logical configuration changes and traffic conditions of the entire network through protocol conversion. The gateway 15 performs a more complicated transmission method between the FDDI LAN 5 and the wide area network 16, for example, an advanced protocol conversion for transmitting audio data and video data together with data.

FIG. 2 is a diagram for explaining the configuration of the network management traffic transmission bandwidth control system on the data communication network shown in FIG. This network management traffic transmission bandwidth control system includes an agent 30 as a terminal device and a gateway 3 as a protocol conversion relay device for changing a line transmission speed.
1 and manages the network;
And a manager 32 as a higher-level management device (host computer) that collects data in order to know the operating state of the server. This agent 30 and gateway 31
Are connected by a low transmission line 33, and the gateway 31 and the manager 32 are connected by a high transmission line 34.

In the network management traffic transmission bandwidth control system shown in FIG. 2, the agent 30 corresponds to the terminal device T1 and the gateway 31
Are provided in the router 5, and the manager 32 corresponds to the terminal device 22. And the line 33 with a low transmission speed
Is an Ethernet LAN 1 and a high transmission speed line 3
4 corresponds to the FDDI LAN 5.

In the network management traffic transmission bandwidth control system shown in FIG. 2, the agent 30 corresponds to the terminal device T2 of FIG. 1, the gateway 31 is provided in the router 21, and the manager 32 corresponds to the terminal device 23. I do. In addition, the low transmission speed line 33 is the Ethernet LAN 2, and the high transmission speed line 34 corresponds to the FDDI LAN 5.

Further, in the network management traffic transmission bandwidth control system shown in FIG. 2, the agent 30 corresponds to the terminal device 25, the gateway 31 corresponds to the gateway 15, and the manager 32 corresponds to the terminal device 22 or the terminal device 23. I do. Here, the low transmission speed line 3
Reference numeral 3 denotes a wide area network (WAN) 16, and a high transmission speed line 34 corresponds to the FDDI LAN 5.

The agent 30 shown in FIG. 2 executes a network management program for generating network management data such as fault occurrence data and operation / time (inter-time) data indicating the operation status of this terminal device in time units. Part 3
0a, and a transfer amount control unit 30b for controlling the transmission bandwidth (transfer amount) of the network management data to a predetermined constant value for transfer. The gateway 31 has a transfer amount control unit 31a for controlling the transfer bandwidth of the network management data to a predetermined constant value for transfer.

Further, the manager 32 is also the agent 30
It has a network management program execution unit 32a and a transfer amount control unit 32b that operate in the same manner as described above. The network management program execution unit 3 of the manager 32
2a and the transfer amount control unit 32b receive network management data and transmission data from the agent 30,
Also, it controls transmission and reception of transmitting various management data to the agent 30.

FIG. 3 shows the transfer amount control units 30b and 30 in FIG.
It is a block diagram which shows the detailed structure of 1a, 32b. The transfer amount control units 30b to 32b include a data receiving unit 40a that receives network management data from the network management program execution unit 30a, and a received data storage that stores the network management data received by the data receiving unit 40a. It has a unit 40b and a data transmission unit 40c that extracts network management data stored in the reception data storage unit 40b as transmission data and transmits (transfers) it to the network.

Further, the data transmission unit 40c controls the transmission bandwidth of the network management data (traffic) to a predetermined small transmission bandwidth and transfers the data, or performs control for transferring the data with the same transmission bandwidth. It has a data transmission control unit 40d and a control message receiving unit 40e that receives a control message indicating whether or not reception is possible from another transfer destination device and sends it to the data transmission control unit 40d. Note that, instead of the operation of the data transmission control unit 40d, the data transmission unit 40c transfers the network management data (traffic) by controlling the transmission bandwidth to a predetermined small transmission bandwidth, or
Control for transferring data with the same transmission bandwidth may be performed.

Next, the operation of the first embodiment will be described. FIG. 4 is a diagram for explaining an outline of an operation for controlling the transmission bandwidth of the network management traffic. The agent 30 (terminal devices T1, T2,
25) and a manager 32 (terminal device 2 in FIG. 1).
2 and 23), communication of network management data occurs. For example, the agent 30 transmits network management data such as fault occurrence data or operation / time (inter-time) data indicating the operation status in units of time.

The communication of the network management data between the agent 30 and the manager 32 is performed by a low-speed transmission line 33 (Ethernet LAN 1, 2 / Transmission speed 10 Mbps, wide area network (WAN) 16 / Transmission speed 45 M).
bps) and high transmission rate line 34 (FDDI LA)
N5 / transmission rate 100Mbps) and gateway 3
1 (corresponding to the routers 5, 21 and the gateway 15 in FIG. 1). In this case, the gateway 31 performs transmission control for setting the transmission bandwidths of the low transmission speed line 33 and the high transmission speed line 34 to a predetermined transmission bandwidth (occupancy).

In this transmission control, the occupation ratio of the transmission bandwidth in the communication of the network management data on the line 33 having a particularly low transmission speed is controlled to be small. That is, the ratio of the transmission bandwidth between the transmission data and the network management data is reduced so that a congestion state or the like does not occur. That is, the control is performed so that the transfer delay of the transmission data does not occur. In the high transmission speed line 34, transfer control is performed so that the ratio of the transmission bandwidth of the transmission data to the network management data is larger than that of the low transmission speed line 33 or the transmission bandwidth is reduced. Instead, it is transferred with the same transmission bandwidth.

Hereinafter, the operation for controlling the transmission bandwidth of the network management traffic according to the first embodiment will be described in detail. FIG. 5 is a flowchart illustrating a processing procedure of an operation for controlling the transmission bandwidth of the network management traffic according to the first embodiment. 1 to 5, the agent 30 (the terminal devices T1, T2, and 2 shown in FIG. 1) shown in FIG.
5) to the manager 32 (the terminal device 2 in FIG. 1).
2 and 23), and network management data such as operation / time (inter-time) data indicating the operation status of the terminal device in time unit.

In this transmission, the network management program execution unit 30a of the agent 30 fetches event data through a device (not shown) to generate network management data, and the transfer amount control unit 30b shown in FIG.
To send to. In the transfer amount control unit 30b, the data receiving unit 40a receives the network management data (step S40 in FIG. 5), and is stored in the received data storage unit 40b (step S41). Next, the data transmission unit 40c extracts and acquires the network management data as transmission data (step S42). The transmission data is generated to have a transmission data length by the data transmission unit 40c or the data transmission control unit 40d (step S43).

Thereafter, a post-transmission waiting time determination process is performed. That is, the waiting time until transmission processing of the next network management data after transmission of the network management data is determined by the following equation (1).

Transmission data length / (line transmission speed × network management traffic occupancy × 0.01) (1)

For example, when the transmission data length is 4096B, the waiting time is “[4096B × 8 bits / B) / (1
(0 Mbps × 10% × 0.01) = 32.8 ms. By this waiting time, the ratio of the network management data (traffic) to the transmission bandwidth of the line 33 having the low transmission speed is fixed to 10%. In other words,
The transmission bandwidth is fixed to a predetermined small transmission bandwidth (step S4).
4). In the post-transmission waiting time determination processing, the line transmission speed and the occupancy of the network management data (traffic) are obtained by referring to a line information table in which the line information is stored in advance, and calculating by (Equation 1).

Next, the gateway 31 shown in FIG. 2 (the routers 5 and 2 in FIG.
1, corresponding to the gateway 15), the transmission permission flag indicating the receivable state is referred through the control message receiving unit 40e and the data transmission control unit 40d shown in FIG. 3 (step S45). If the transmission permission / inhibition flag can be transmitted, the network management data is transmitted from the data transmission unit 40c shown in FIG. 3 to the low transmission rate line 33 shown in FIG.
(Step S46). If the transmission permission / prohibition flag indicates that transmission is not possible, the transmission is pending and the reception of the next network management data is waited (step S4).
7).

Next, in the gateway 31 shown in FIG.
The transfer amount control unit 31a executes the same processing of steps S40 to S47 as the agent 30. That is, as shown in FIG. 3, the data receiving unit 40a receives the network management data and stores it in the received data storage unit 40b.
c retrieves and acquires. Further, the transmission data is generated to have the transmission data length, and the post-transmission waiting time is determined by the operation of (Equation 1). The occupation ratio of the network management data (traffic) to the transmission bandwidth of the line 34 having a high transmission speed is stabilized by the determined waiting time.

This post-transmission waiting time determination processing refers to the line information table, and performs the calculation by (Equation 1).
The process is executed by referring to the control message indicating whether transmission is possible or not via the control message receiving unit 40e and the data transmission control unit 40d shown in FIG. Thereafter, the network management data is transmitted from the data transmission unit 40c shown in FIG. 3 to the manager 32 through the high transmission speed line 34 shown in FIG. In addition, for the line 34 with a high transmission speed,
The transfer amount control unit 31a of the gateway 31 may perform the transfer with the same transmission bandwidth at the time of reception without performing the post-transmission waiting time determination process for the network management data.

The high-speed transmission line 34 on the output side of the gateway 31 is connected to the low-transmission speed line 33 on the input side.
There is a case where the network configuration is lower than the line transmission speed (10 Mbps). For example, if the output side has a line transmission speed of 1.
In the case of 5 Mbps, the network management data may not be able to be stored in the reception data storage unit 40b shown in FIG. In this configuration, the following processing is performed.

FIG. 6 is a flowchart showing a processing procedure in the operation of the gateway 31. Gateway 3
In step 1, each time the data receiving unit 40a shown in FIG. 3 in the transfer amount control unit 31a receives the network management data, the received data storage unit 40b checks whether new network management data can be stored. (Step S5
1, S52). If reception is not possible (S52: No), a control message indicating that reception is not possible is transmitted to the agent 30.

FIG. 7 is a flowchart showing a processing procedure in the operation of the agent 30. Agent 3
0 indicates that the control message receiving unit 40e shown in FIG. 3 receives the unreceivable control message processed by the gateway 31 in the processing procedure shown in FIG. 6 (step S61). When this unreceivable control message is confirmed (step S6)
2: Yes), the non-reception setting is processed, and the non-reception flag is set (steps S64 and S65). In addition,
When the control message indicating that reception is possible is confirmed in step S62 (step S63: Yes), the reception permission setting is processed, and the reception permission flag is set (steps S66 and S66).
65).

FIG. 8 is a flowchart showing a processing procedure in another operation of the gateway 31. Processing for confirming the storage amount of the network management data in the reception data storage unit 40b shown in FIG. 3 is performed (step S).
71, S72). If this determination is acceptable (S72: Y
es), and sends a receivable control message to the agent 30 shown in FIG. The agent 30 that has received the control message indicating that reception is possible sets the reception enable / disable flag in step S66 to allow transmission as shown in the processing procedure of FIG.
Under the control of the data transmission control unit 40d shown in FIG.
0c transfers the network management data.

Network management data such as fault occurrence data from the gateway 31 operating in this way and operation / time (inter-time) data indicating the operation status of this terminal device in time unit is stored in the network management of the manager 32. Is received through the application program execution unit 32a and the transfer amount control unit 32b. The manager 32 manages the agent 30 through the network management data, and also manages the transmission state of the network on the low transmission speed line 33 and the high transmission speed line 34.

Note that the manager 32 is also connected to the agent 3
2 has a network management program execution unit 32a and a transfer amount control unit 32b that operate in the same manner as the agent 30 and manages other networks and terminal devices not shown in FIG. You can do it.

Next, a second embodiment will be described. FIG. 9 is a block diagram illustrating the configuration of the second embodiment. The second embodiment includes a plurality of gateways, and includes an agent 30, gateways 31A and 31B, and a manager 32. This agent 3
Line 3 of low transmission speed between 0 and gateway 31A
3 and a high-speed transmission line 34 connects between the gateways 31A and 31B. Further, the gateway 31B and the manager 32 are connected by a medium transmission speed line 35.

The agent 30 has the same network management program execution unit 30 as the first embodiment shown in FIG.
a and a transfer amount control unit 30b, and the manager 32 also has a network management program execution unit 32a and a transfer amount control unit 32b. Gateway 31A, 31B
Also, transfer amount control units 31Aa and 31Ba that operate in the same manner as in the first embodiment shown in FIG. 2 are provided. The configuration of the transfer amount control units 30b, 31Aa, 31Ba, and 32b is the same as the detailed configuration of the transfer amount control unit shown in FIG.

FIG. 1 shows a network management traffic transmission bandwidth control system having the configuration of the second embodiment. For example, the agent 30 corresponds to the terminal device T1, the gateway 31A is provided in the router 3, and
The gateway 31B is the gateway 15, and
The manager 32 corresponds to the terminal device 35. Further, the line 33 having a lower transmission speed corresponds to the Ethernet LAN 1, and the line 34 having a higher transmission speed corresponds to the FDDI LAN 5,
The medium transmission line 35 corresponds to the wide area network (WAN) 16.

The operation of the second embodiment is the same as that of the first embodiment. In this case, the Ethernet LA shown in FIG.
The transmission bandwidth of the network management data over the N1, the FDDI LAN 5, and the wide area network (WAN) 16 can be made constant at a predetermined small transmission bandwidth.

[0056]

As is apparent from the above description, according to the network management traffic transmission bandwidth control system of the present invention, the transmission bandwidth of the network management data traffic between a plurality of networks having different line transmission speeds is reduced. Controlling. As a result, when a local area network, a wide area network, and the like having different line transmission speeds are connected, the transmission bandwidth of the network management data can be fixed to a predetermined small transmission bandwidth. Therefore, the transmission and reception of the transmission data from the terminal device and the higher-level management device are not delayed in a congestion state or the like, and the data transmission efficiency is improved.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a data communication network to which a network management traffic transmission bandwidth control system according to a first embodiment of the present invention is applied.

FIG. 2 is a diagram for explaining a configuration of a network management traffic transmission bandwidth control system on the data communication network shown in FIG. 1;

FIG. 3 is a block diagram illustrating a detailed configuration of a transfer amount control unit in FIG. 2;

FIG. 4 is a diagram for explaining control of a transmission bandwidth in the first embodiment.

FIG. 5 is a flowchart illustrating a processing procedure for controlling a transmission bandwidth in the first embodiment.

FIG. 6 is a flowchart illustrating a processing procedure of an operation of the gateway according to the first embodiment.

FIG. 7 is a flowchart showing a processing procedure of an operation of an agent in the first embodiment.

FIG. 8 is a flowchart showing a processing procedure of another operation of the gateway in the first embodiment.

FIG. 9 is a block diagram illustrating a configuration of a second embodiment.

[Explanation of symbols]

T1, T2, T3, 22, 23, 25 Terminal device 1, 2, 10, 18 Ethernet LAN 3, 4, 6, 11, 14, 17, 20, 21 Router 5 FDDI LAN 15, 31, 31A, 31B Gateway 16 Wide area network 30 Agent 32 Manager 33 Low transmission speed line 34 High transmission speed line 30a, 32a Network management program execution unit 30b, 31Aa, 31Ba 31a, 32b Transfer amount control unit 40a Data reception unit 40b Received data storage unit 40c Data transmission unit 40d Data transmission control unit 40e Control message reception unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04L 29/06 H04M 3/00

Claims (14)

[Claims] 1. A terminal device and a host management device are connected via a plurality of networks having different line transmission speeds, and a protocol conversion relay device for changing a transmission bandwidth is provided between the plurality of networks. A network, wherein the relay device transfers the transmission bandwidth of the traffic of network management data from the terminal device with the same transmission bandwidth, or transfers the traffic to the network while controlling the transmission bandwidth to a predetermined small transmission bandwidth. Management traffic transmission bandwidth control system. 2. An agent of the terminal device, comprising: a network management program execution unit for generating at least a failure and network management data indicating an operation state of the terminal device; and a transmission bandwidth of the network management data. 2. The network management traffic transmission bandwidth control system according to claim 1, further comprising: a transfer amount control unit configured to transfer the data while controlling to a constant value. 3. The transfer protocol control apparatus according to claim 1, wherein the gateway of the protocol conversion relay device includes a transfer amount control unit for transferring the network management data by controlling the transmission bandwidth to a predetermined constant value. Network management traffic transmission bandwidth control system. 4. The network management traffic transmission according to claim 1, wherein the manager of the upper management device includes a network management program execution unit that receives at least network management data and transmission data from a terminal device. Bandwidth control system. 5. The manager of the higher-level management device includes: a network management program execution unit that generates at least a failure and network management data indicating an operation state of the terminal device; and a transmission bandwidth of the network management data. The network management traffic transmission bandwidth control system according to claim 4, further comprising: a transfer amount control unit configured to transfer the data while controlling to a predetermined constant value. 6. A data reception unit for receiving network management data, a reception data accumulation unit for accumulating network management data received by the data reception unit, as the transfer amount control unit; A data transmitting unit for extracting the stored network management data as transmission data, and transmitting the data, wherein the data transmission unit controls the transmission bandwidth of the traffic of the network management data to a predetermined small transmission bandwidth. A data transmission control unit for performing control for transferring or transmitting data with the same transmission bandwidth; a control message receiving unit for receiving a control message indicating whether or not reception is possible from a transfer destination device and transmitting the control message to the data transmission control unit The network management traffic transmission band according to any one of claims 2, 3, and 5, further comprising: Bandwidth control system. 7. When the transmission bandwidth of the traffic of the network management data from the terminal device is controlled to a predetermined small transmission bandwidth, the transmission processing of the network management data until the acquisition processing of the next network management data after the transmission of the network management data. 2. The network management traffic transmission bandwidth control system according to claim 1, wherein the line transmission speed is made slow and constant by changing the waiting time of the network. 8. When the line transmission speed is made slow and constant, a waiting time after transmission of network management data until acquisition processing of the next network management data is expressed as “transmission data length / (line transmission speed × network transmission speed)”. 8. The network management traffic transmission bandwidth control system according to claim 7, wherein the management traffic occupancy is calculated. 9. A data transmission control unit in the transfer amount control unit, wherein a line transmission speed and network management data for each network for controlling a transmission bandwidth of traffic of network management data to a predetermined small transmission bandwidth. 7. The network management traffic transmission bandwidth control system according to claim 6, further comprising a line information table in which the relationship of the traffic occupancy is stored in advance. 10. The reception data storage unit of the transfer amount control unit sends a reception impossible flag to an agent of a terminal device or a gateway of a protocol conversion relay device via a network when network management data is too large to be stored. 6. The network management traffic transmission bandwidth control system according to claim 5, wherein the agent of the terminal device or the gateway of the protocol conversion relay device that has received the reception impossible flag stops the transfer of the network management data. . 11. A plurality of said protocol conversion relay devices are provided for each network in a plurality of networks, and each of the protocol conversion relay devices keeps the transmission bandwidth of the traffic of network management data from the terminal device unchanged. 2. The network management traffic transmission bandwidth control system according to claim 1, wherein the data is transmitted to the respective networks by controlling the transmission bandwidth or controlling the transmission bandwidth to a predetermined small transmission bandwidth. 12. The network according to claim 1, wherein said network is at least an Ethernet local area network;
FDDI local area network or B-ISDN of ATM cell relay system, frame relay and SM
The network management traffic transmission bandwidth control system according to claim 1, wherein the network is a wide area network including DS. 13. The network management traffic transmission bandwidth control system according to claim 1, wherein the protocol conversion relay device is provided in a router or a bridge that controls and manages a traffic state through at least protocol conversion. 14. The apparatus according to claim 1, wherein the protocol conversion relay device is provided in a gateway connecting between networks that perform protocol conversion control at a higher level than a router or a bridge that controls and manages a traffic state through at least protocol conversion. Item 2. The network management traffic transmission bandwidth control system according to Item 1.