JP6129038B2 - Control device and program for communication device accommodating subscriber device - Google Patents

Description

  The present disclosure relates to a technology for controlling a communication device that accommodates a subscriber device.

  A VPN (Virtual Private Network) provided by a telecommunications carrier is widely used in order for companies to interconnect networks at each site. An access section between a company base and a network provided by a telecommunications carrier is configured by connecting the edge device on the enterprise side and the edge device on the telecommunications carrier side by, for example, an optical line. At this time, the traffic amount (transmission band) per unit time that can be transmitted / received between the edge device on the company side and the edge device on the network side is set to an upper limit value according to the charge. When the edge device transmits data exceeding the upper limit value, the edge device on the network side discards the amount of data exceeding the upper limit value. For this reason, a company needs to make a contract with a communication carrier for each site based on an upper limit value that takes into account the traffic fluctuation amount of the access section for each site. This means that there is a difference between the contracted transmission band (upper limit value) and the actually used band.

  Patent Document 1 discloses that the management server collects the bandwidth set between the bases and the application information used in the terminals at the bases and controls the terminals.

JP 2011-176467 A

  Patent Document 1 is intended to reduce the setting load of a terminal in a user. When the structure described in Patent Document 1 is applied, the structure for controlling traffic transmitted from a terminal at a base based on a contracted upper limit value. However, it is not realistic for a telecommunications carrier to control each terminal of a company base network. Further, it is impossible to solve the problem that there is a difference between the contracted transmission band and the actually used band.

  The present invention provides a control device that solves the above problems.

According to an aspect of the present invention, a plurality of communication devices and a plurality of control devices are included, each of the plurality of communication devices accommodates one or more user subscriber devices, and the plurality of controls. A network associated with one of the devices, wherein a predetermined bandwidth determined in advance by a user and a provider of the network has a transmission rate between each of the plurality of subscriber devices of the user and the communication device; The control device in the network to be allocated as an upper limit value, for each of one or more associated communication devices, collecting means for collecting the traffic volume between subscriber devices of the first user accommodated therein, For each communication device that is not associated, the amount of traffic with respect to the subscriber device of the first user accommodated by each device is acquired from another control device. Based on the acquisition means, the traffic volume of the first user collected by the collection means, and the traffic volume of the first user acquired by the acquisition means, for each of the one or more associated communication devices, the first And a calculating means for calculating an upper limit value of a transmission rate with the user's subscriber device.

  The difference between the contracted transmission band and the actually used band can be reduced.

The schematic block diagram of the network used for description of one Embodiment. The schematic block diagram of the control apparatus by one Embodiment. The figure which shows the example of the traffic information which the holding | maintenance part of a control apparatus hold | maintains. The figure which shows the other example of the traffic information which the holding | maintenance part of a control apparatus hold | maintains. The figure which shows the example of the exchange information which the information exchange part of a control apparatus hold | maintains. The figure which shows the example of exchange of the traffic information between control apparatuses.

  Hereinafter, exemplary embodiments of the present invention will be described with reference to the drawings. In the following drawings, components that are not necessary for describing the embodiment are omitted from the drawings. Moreover, the following embodiment is an illustration and does not limit this invention to the content of embodiment.

  FIG. 1 is a configuration diagram of a network used for describing the embodiment. In FIG. 1, squares displayed as # 1 to # 3 are edge devices (hereinafter, simply referred to as subscriber devices) at the company base that is a user, and # 1 to # 3 are different users. The subscriber unit is shown. In FIG. 1, VPN is a network provided by a telecommunications carrier, and edge devices A to D are communication devices on the network side that accommodate subscriber devices (hereinafter simply referred to as edge devices). . In the configuration of FIG. 1, for example, the user # 1 performs arbitrary communication between three bases connected to the edge devices A, C, and D. As shown in FIG. 1, in the present embodiment, associated control devices A to D are provided for the respective edge devices A to D.

  FIG. 2 is a schematic configuration diagram of the control device according to the present embodiment. The traffic information collection unit 1 periodically collects the traffic amount for each user from the corresponding edge device and causes the holding unit 2 to hold it. Here, the value to be collected is a difference from the previous collection time. In the following description, the traffic volume to be collected is the uplink direction, that is, the traffic volume transmitted from the user's subscriber device to the network, but the downlink direction, that is, the edge device is directed toward the user's subscriber device. It may be the amount of traffic to be transmitted or the amount of traffic in both directions.

  The information exchanging unit 3 notifies the traffic volume held by the holding unit 2 to other control devices, acquires the traffic volume collected by the other control devices from the other control devices, and holds the traffic volume in the holding unit 2. FIG. 3 shows an example of the traffic volume held by the holding unit 2 of the control device A. In FIG. 3, the collected traffic volume and collection time are shown for each combination of edge device and user subscriber device. In FIG. 3, the traffic volume related to the edge device A is acquired from the edge device A by the traffic information collection unit 1 of the control device A, and the traffic volume related to the edge devices B to D is the information exchange of the control device A. Part 3 has been acquired. Since the edge device A does not accommodate the subscriber device of the user # 3, the information exchange unit 3 of the control device A does not acquire the traffic volume related to the subscriber device of the user # 3. This suppresses the amount of data exchanged between the control devices.

  5A and 5B show exchange information held by the information exchange unit 3 of the control device A, respectively. FIG. 5A shows a control device associated with another edge device that accommodates subscriber devices of users # 1 and 2 accommodated by the edge device A associated with the control device A. FIG. Based on the exchange information shown in FIG. 5A, the information exchange unit 3 of the control device A recognizes that the traffic information related to the subscriber device of the user # 1 is acquired from the control device C and the control device D, and the control device B It recognizes that the traffic information related to the subscriber device of user # 2 is acquired from the control device C. The exchange information in FIG. 5A is different information for each control device, but the exchange information shown in FIG. 5B can also be used as common exchange information in each control device. In the exchange information of FIG. 5B, a control device related to an edge device that accommodates a subscriber device of the user is shown for each user.

  Returning to FIG. 2, for each user accommodated in the corresponding edge device, the bandwidth calculation unit 4 sets the corresponding edge device based on the ratio of the traffic amount in the corresponding edge device to the total traffic amount in all bases. The upper limit value is determined, and the bandwidth control unit 5 sets the determined upper limit value in the corresponding edge device. For example, in the state of FIG. 3, the total traffic volume of user # 1 is (Xa + Xe + Xh) and the traffic volume at edge device A is Xa, so Z × Xa / (Xa + Xe + Xh) is transferred to edge device A. The upper limit value of the traffic volume from the subscriber device of the user # 1 to be set is set. Here, Z is a predetermined value determined by a contract between the user # 1 and the communication carrier. That is, the user contracts the upper limit value of the total bandwidth of all bases with the communication carrier, and the communication carrier side distributes the upper limit value of the total bandwidth to each base based on the traffic volume of each base. With this configuration, the upper limit value at the site can be changed according to the actual traffic volume at the site while keeping the total upper limit value constant, thereby reducing the difference between the actual traffic amount and the upper limit value. be able to. When the traffic volume of a certain edge device is 0, the upper limit value of the traffic volume set for the edge device is 0. In order to prevent the upper limit value of the traffic volume set in the edge device from becoming 0, when the traffic volume of a certain edge device is equal to or less than a predetermined threshold value greater than 0, the traffic volume is set to, for example, the predetermined threshold value. As a certain configuration, the traffic amount set in the edge device can be calculated. Further, an upper limit value set based on the collected traffic volume is obtained, and when the obtained upper limit value is equal to or smaller than a predetermined threshold value greater than 0, the upper limit value can be set as the predetermined threshold value. In this case, for an edge device whose upper limit value obtained by calculation is larger than a predetermined threshold value, the upper limit value is adjusted so that the sum of the set upper limit values becomes Z.

  Each control device, for example, takes time synchronization by a network time protocol (NTP) or the like, and collects the traffic amount from the corresponding edge device and the traffic amount collected with other control devices every predetermined period. And the upper limit value is set to the corresponding edge device.

  In the above embodiment, the traffic volume is collected for each user. However, the traffic volume can be collected for each combination of the user and the application. FIG. 4 shows an example in which the traffic volume is collected for each combination of user and application. Here, the application is specified by, for example, any one of a transmission destination IP address, a transmission source IP address, a transmission source port number, a transmission destination port number, a protocol, or any combination thereof. In this case, the company contracts the total bandwidth for each application with the telecommunications carrier, and the bandwidth calculation unit 4 uses the traffic volume of a certain user's application and the total bandwidth of the application at each base. Set the upper limit to the edge device.

  In addition, for example, based on the information shown in FIG. 5, the exchange of the traffic amount between the control devices can be performed individually between the two control devices. However, the control device that communicates in advance for information exchange is specified. It can also be limited to those. For example, in the configuration of FIG. 1, the control device A and the control device C may be configured to exchange only the control device D for the traffic of the user # 1. FIG. 6 is a sequence diagram in the case where the adjacent relationship is provided between the control devices as described above, and each control device exchanges the traffic amount only with the adjacent control device. As described above, the collection, exchange, and setting of the upper limit value of the traffic volume are performed at a predetermined period Δt. In the example of FIG. 6, in the first cycle, the control device A transmits the traffic volume collected by the control device A to the control device D, and then the control device D sends the control device D to the control devices A and C. Send the collected traffic volume. At this time, since the control device D has already received the traffic amount collected by the control device A, the control device C includes the traffic amount received from the control device A. Thereafter, the control device C transmits the traffic volume collected by itself to the control device D, and the control device D transmits the traffic volume collected by the control device C to the control device A.

  In the next cycle, the control device D receives the traffic amount from the control devices A and C before transmitting the traffic amount collected by the own device to the control devices A and C. Accordingly, the traffic volume received from the control apparatus C together with the traffic volume collected by the own apparatus is transmitted to the control apparatus A, and the traffic volume received from the control apparatus A together with the traffic volume collected by the own apparatus is transmitted to the control apparatus C. Yes. It should be noted that the timing at which each control device transmits the traffic volume is determined in advance, and the traffic volume can be exchanged in the same order in any cycle. Furthermore, the traffic volume can be exchanged using multicast technology. In the above-described embodiment, the relationship between the edge device and the control device is 1: 1, but one control device can be associated with a plurality of edge devices.

  The control device according to the present invention can be realized by a program that causes a computer to operate as the control device. These computer programs can be stored in a computer-readable storage medium or distributed via a network.

Claims (11)

A plurality of communication devices and a plurality of control devices, each of the plurality of communication devices containing one or more user subscriber devices and associated with one of the plurality of control devices. In the network , the predetermined bandwidth predetermined by the user and the network operator is allocated as an upper limit value of a transmission rate between each of the plurality of subscriber devices of the user and the communication device . The control device comprising:
A collecting means for collecting traffic volume between each of the associated one or more communication devices and a subscriber device of a first user accommodated by each of the communication devices;
For each communication device that is not associated, an acquisition unit that acquires, from another control device, a traffic volume with the subscriber device of the first user that each accommodates,
Based on the traffic volume of the first user collected by the collection means and the traffic volume of the first user acquired by the acquisition means, the subscriber of the first user for each of the one or more associated communication devices A calculation means for calculating an upper limit value of a transmission rate between the apparatus and the device;
A control device comprising: The calculating means is a subscriber of the first user for one associated communication device with respect to the sum of the traffic volume of the first user collected by the collecting means and the traffic volume of the first user acquired by the acquiring means. Based on a value obtained by multiplying the ratio of the traffic volume with the device and the predetermined bandwidth of the first user, the transmission rate between the associated one communication device and the subscriber device of the first user The control device according to claim 1, wherein an upper limit value is calculated.   3. The control device according to claim 1, further comprising a setting unit that sets an upper limit value of the transmission rate calculated by the calculation unit in the one or more associated communication devices.   The acquisition unit holds information indicating a control apparatus associated with a communication apparatus that is an unassociated communication apparatus and that accommodates the subscriber apparatus of the first user. The control device according to any one of claims 1 to 3. The collecting means collects the amount of traffic in the upstream direction between the one or more associated communication devices and the subscriber device of the first user;
The acquisition means acquires an uplink traffic volume between the one or more unrelated communication devices and the subscriber device of the first user,
The said calculating means calculates the upper limit of the transmission rate of the uplink direction between the said 1st user's subscriber apparatuses about each of the said 1 or more associated communication apparatus, The said transmission means is characterized by the above-mentioned. 5. The control device according to any one of items 1 to 4. The collecting means collects a traffic amount in a downlink direction between the one or more associated communication devices and the subscriber device of the first user;
The acquisition unit acquires a traffic amount in a downlink direction between the one or more unrelated communication devices and the subscriber device of the first user,
The said calculating means calculates the upper limit of the transmission rate of the downlink direction between the said 1st user's subscriber apparatuses about each of the said one or more associated communication apparatus, The said transmission means is characterized by the above-mentioned. 5. The control device according to any one of items 1 to 4. The collecting means collects traffic amounts in the uplink and downlink directions between the associated one or more communication devices and the subscriber device of the first user,
The acquisition means acquires the traffic volume in the uplink direction and the downlink direction between the one or more unrelated communication devices and the subscriber device of the first user,
The calculating means calculates, for each of the one or more associated communication devices, an upper limit value of an uplink and a downlink transmission rate with the subscriber device of the first user. The control device according to claim 1. The collection means collects the traffic volume with the subscriber device of the first user in units of applications,
The acquisition means acquires the traffic volume with the subscriber device of the first user in units of applications,
The said calculating means calculates the upper limit of the transmission rate between said 1 or more subscriber apparatuses of each said 1 or more associated communication apparatus for every application, It is characterized by the above-mentioned. The control device according to any one of 1 to 7.   9. The upper limit value of the transmission rate with the first user's subscriber device calculated by the calculating means is a value equal to or greater than a predetermined threshold value greater than zero. The control device described in 1.   When the traffic volume with the subscriber device of the first user collected or acquired is equal to or less than a predetermined threshold value greater than 0, the calculation means determines the traffic volume with the subscriber device of the first user. The control device according to any one of claims 1 to 8, wherein the upper limit value is calculated assuming that the threshold value is the predetermined threshold value.   A program for causing a computer to function as the control device according to any one of claims 1 to 10.

Images