JP2001339432A - Managing server and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a managing server to be applied to a network system for reducing the nonuniformity of a network quality such as delay caused by the distance different for each route of a closed area connection network composed of a plurality of routes. SOLUTION: A managing server 101 has a route path managing part 103 for managing route paths for closed area connection, a quality calculating part 106 for calculating quality such as delay of each route path on the basis of the information of the route path managing part 103 or the like, and a node setting part 104 for performing setting to nodes 121, 131 and 141 having a plurality of priority queues on the basis of the quality calculated by the quality calculating part 106. The quality calculating part 106 compares the distance of the route path on the basis of route path data 109 and the queue of higher quality is assigned to the route path as the distance extends. Thus, the difference of delay is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a management server and a recording medium applied to a closed connection network system including a plurality of communication paths.

[0002]

2. Description of the Related Art In a conventional network system, the line quality of a dedicated line service or a closed area connection service is classified into classes based on a packet loss rate, a transmission delay rate, and the like. For the purpose of classifying the line quality, see, for example, Japanese Patent Application Laid-Open No. 9-1165.
There is a technology for optimizing a route based on the capacity, distance, delay, quality, and the like of a link and a node as disclosed in Japanese Patent Publication No. 73-73.

[0003]

In the conventional technology for optimizing the communication quality by selecting a route, the communication quality is generated by different distances and line capacities for each of a plurality of routes in a closed connection network system composed of a plurality of routes. No consideration was given to non-uniformity of line quality such as delay. For this reason, no consideration has been given to the occurrence of regional differences in the transfer quality of data and voice due to the distance, transmission path quality, and the like between the areas connected by the closed connection network. Further, in a network that performs charging based on network quality, no consideration has been given to the fact that even if the service priority is high to some extent, a long distance causes a delay and the service is significantly reduced as a result.

[0004] An object of the present invention is to apply to a closed connection network system constituted by a plurality of routes, to reduce a difference in delay caused by a distance, and to suppress a variation in communication quality of the entire closed connection. It is to provide a management server and a recording medium.

[0005]

In order to achieve the above object, a management server of the present invention is a management server for managing the quality of a network, and a route path management unit for managing the distance of a closed connection route path. And a quality calculator for calculating the quality of each route path based on the distance of the route path, and a node for assigning a priority queue to a node having a plurality of priority queues based on the quality calculated by the quality calculator. A setting unit.

Further, the distance of the path path is a distance dependent on a physical distance and a logical distance, so that the difference in delay can be precisely determined by the distance in consideration of the physical distance and the logical distance. Can be smaller. Further, by providing a charge calculation unit for calculating a charge according to the service usage status by the management server, it is possible to provide uniform communication quality according to the charge. Further, the present invention is a computer-readable recording medium in which a program for causing a computer to function as the management server is recorded.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration when the management server according to the embodiment of the present invention is applied to a closed area connection network system.

In FIG. 1, a closed connection network system includes a management server 1 for managing a closed connection network.
01 and nodes 121, 131, and 1 that perform data transfer
41, the management server 101 and the node 12
1, 131 and 141 transmit node control information and the like via the network 120.

The management server 101 includes a closed connection service receiving unit 102 for receiving a delay uniform closed service request,
A path path management unit 103 for managing a path for closed connection based on the closed connection service reception information and the like; a node setting unit 104 for setting the nodes 121, 131, and 141 having a plurality of priority queues; Management unit 105 for inputting network configuration information, configuration management unit 1
There is a quality calculation unit 106 that calculates the quality of each route path such as delay based on information from the network path 05 and the route path management unit 103, and a charging calculation unit 107 that collects a service fee according to the application status of the delay uniform service. are doing.

The closed connection service receiving unit 102 stores a contract data storage area 10 for storing service contract data.
8, the path management unit 103 stores a path data storage area 109 for storing the path data in the configuration management unit 105.
Has a configuration data storage area 110 for storing network configuration information including network topology information, and the charge calculation unit 107 has a charge data storage area 111 for storing charge data for charge collection. Each of the storage areas 108, 109, 110, and 111 may be any area that can store a file such as a specific directory or database on a file system.

The nodes 121, 131, and 141 are composed of a plurality of queues 122 having different priorities such as processing and discarding levels in the nodes, and a queue distribution unit for distributing data input via a line to the plurality of priority queues. 123 and queue 1
Queue control unit 12 for controlling the queue distribution unit 22 and the queue distribution unit 123
Four. The types of the routers, hubs, and the like are not limited as long as the nodes 121, 131, and 141 can transfer a plurality of data having different priorities based on specific identification information.

Next, the operation of the embodiment of the present invention will be described. FIGS. 2, 3, and 4 are flowcharts of the closed connection service processing according to the embodiment of the present invention, and FIGS. 5, 6, 7, and 8 are data tables used in the embodiment of the present invention. This is an example.

FIG. 2 is a flowchart showing the operation of the management server 101 according to the embodiment of the present invention. For example, when a user requesting a closed connection service requests an additional service with a uniform delay, the closed connection service receiving unit 102 receives the request (201), assigns a contractor identifier 502, and, together with each connection address 503. A contract information table 501 is created, and the information is stored as contract data 108 (202). It should be noted that the term “accumulation” herein includes writing by copying or moving a file.

In the path / path management unit 103, each connection address 503 of the contract information table 501 and the configuration information table 60 already registered as network configuration information are stored.
The path path 70 for acquiring the node identifier 602, the connection node identifier 603, and the distance 604 between the nodes from the configuration management unit 105 (203) and setting them between the connection addresses
4 and the distance 705 of the route path in the route path information table 7
01 (204).

The distance here includes not only a physical distance but also a logical distance caused by a delay in a relay node, a transmission device, a line, or the like. That is, the distance may be a physical distance, a logical distance, or a distance depending on the physical distance and the logical distance. The unit of the distance may be a metric system or the number of hops of a router in the case of a physical distance, or a relative unit in the case of a logical distance.

If the user requests a uniform delay service in which the influence of the distance of the route path is reduced (205), the quality calculation unit 106 determines the route path created in step 204 based on the route path 704 and the configuration data 110. Are compared, a higher priority queue is assigned to a route path having a longer distance, and a priority 706 of the route path information table 701 is assigned so that a difference in delay is reduced (206). The assignment of the priority 706 means that the quality of each path path 704 is calculated.

FIG. 3 is a flowchart showing details of the operation of the quality calculation unit 106. The path path information table 701 is sorted using the path path distance 705 calculated in step 204 as a key (301). The number m of types when the sorted result is classified by the distance of the path path is obtained (302), and according to the number m of types of the path path (303),
When the distance of the path path is one type, since all the path paths are equidistant, one type of priority queue corresponding to the priority requested by the user as a closed connection service is assigned to all the path paths (305). ). In this case, even if the user has applied for the delay uniform additional service of the closed area connection service, it is not determined that the additional service has been used, and the fee for the additional service may not be collected. When the path path distance is m types, the number of available queues of the node is extracted from the configuration data, and the number of available queues is determined in consideration of the contract conditions of the closed connection service contracted by the user. Determine the type n (30
4). When m types of distances are allocated to the n types of queues, when n = m, allocation is performed on a one-to-one basis (308). If m <n, m types of distances are assigned using part of the queue in consideration of the priority of the user's closed connection service (307). On the other hand, if m> n, 1
Assign multiple distances to one queue (30
9). The allocation of the queue to the distance is calculated and assigned so that the quality is as uniform as possible as a whole. For example, when there is a route path whose route path distance is 1, 2, or 3 units, queues with low, medium, and high priorities are assigned, respectively.

When the quality calculation unit 106 completes the assignment of the priority queue for each path path (206), the path path management unit 103 writes the path path information table 701 into the path path data storage area 109 (207), and The setting unit 104 determines the priority queue assignment method corresponding to the connection address pair 703 to the target nodes 121, 131, and 141 via the autonomous or external instruction via the queue control unit 124 of each node. Then, it is set in the queue distribution unit 123 (208). Here, the priority queue assignment method refers to, for example, information obtained by combining information for identifying a path path at each node and priority information for the path path. When data addressed to Company B is input to the node from Company A, the address pair of Company A and Company B is the path path identification information, and the queue distribution unit 123 assigns the priority queue corresponding to the identification information. Perform sorting.

The connection address pair 703 to be set is an IP address.
(Internet Protocol) The address does not need to be an address, and may be any address that can identify the path. Further, the nodes for which the priority queue assignment method is set may be not only the nodes on the path path but also the nodes for the alternate path. Further, it may be set for all nodes. Further, the priority setting may be controlled in the node by the node setting unit, or the priority setting rule may be created in the node setting unit, and the rule may be sent to the node. May be performed.

FIG. 4 is a flowchart showing the details of the operation of the charge calculation unit 107. The charge calculation unit 107 determines whether or not the contract is for a delay uniform additional service (40).
1). At this time, all users who have subscribed to the uniform delay supplementary service at the time of the contract may be considered as targets, or the quality calculation unit 106 may determine that all route paths are equidistant and the uniform delay supplementary service is determined to be unnecessary. May be excluded from the target. In the case of a contract subject to the delay uniform supplementary service, the operation status of each priority queue in each node for each path path is determined by the nodes 121 and 13 via the network 120.
1 and 141 (402), and based on the collected information, a supplementary service charge by using the delay uniform service is calculated (403). After adding this amount to the basic closed-area connection service usage fee (404), fee collection is performed by storing fee collection information (407). At this time, a package fee or the like obtained by adding the uniform delay service to the closed connection service is set (405), and the package fee may be applied (406).

Note that the management server of the present invention is also realized by a program for causing this management server to function. This program is stored in a computer-readable recording medium such as a CD-ROM.
The storage medium storing the program for causing the management server to function may be a storage device (not shown) such as a ROM or a RAM of a computer, or a program such as a CD-ROM drive as an external storage device. A reading device (not shown) may be provided, and the reading device may be a CD-ROM or the like that can be read by being inserted therein. The recording medium is a magnetic tape, cassette tape, floppy (registered trademark) disk, hard disk, MO
/ MD / DVD or the like, or a semiconductor memory.

[0022]

As described above, according to the present invention,
The difference in delay caused by distance can be reduced, the communication quality of the entire closed connection can be made uniform, and the influence of distance can be reduced to a certain extent even for data such as voice, which is greatly affected by transmission delay. This has the effect of improving or equalizing the sound quality.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration in a case where a management server according to an embodiment of the present invention is applied to a closed connection network system.

FIG. 2 is a flowchart showing an operation of the management server according to the embodiment of the present invention.

FIG. 3 is a flowchart showing details of an operation of a quality calculation unit according to the embodiment of the present invention.

FIG. 4 is a flowchart showing details of an operation of a charging calculation unit according to the embodiment of the present invention.

FIG. 5 is a diagram showing an example of a contract information table used in the embodiment of the present invention.

FIG. 6 is a diagram showing an example of a configuration information table used in the embodiment of the present invention.

FIG. 7 is a diagram illustrating an example of a path path information table used in the embodiment of the present invention.

FIG. 8 is a diagram showing an example of a billing information table used in the embodiment of the present invention.

[Explanation of symbols]

 101 management server 102 closed connection service receiving unit 103 route path management unit 104 node setting unit 105 configuration management unit 106 quality calculation unit 107 billing calculation unit 108 contract data 109 route path data 110 configuration data 111: Charge data 120: Network 121, 131, 141 ... Node 122: Queue 123: Queue distribution unit 124: Queue control unit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference)

Claims (4)

[Claims] 1. A management server for managing the quality of a network, comprising: a path path management unit for managing the distance of a closed connection path path; and a quality for calculating the quality of each path path based on the distance of the path path. A management server, comprising: a calculation unit; and a node setting unit that assigns a priority queue to a node having a plurality of priority queues based on the quality calculated by the quality calculation unit. 2. The management server according to claim 1, wherein the distance of the route path is a distance dependent on a physical distance and a logical distance. 3. The management server according to claim 1, further comprising a charge calculation unit that calculates a charge according to a service usage status by the management server according to claim 1. 4. A computer-readable recording medium on which a program for causing a computer to function as the management server according to claim 1 is recorded.