JP5892248B2 - Centralized metering device, centralized metering method, and centralized metering program - Google Patents

Description

  The present invention relates to a centralized metering device, a centralized metering method, and a centralized metering program, and in particular, for flow control in a switch device used in a communication infrastructure such as an Ethernet (registered trademark) switch or a router. The present invention relates to a centralized metering device, a centralized metering method, and a centralized metering program that can be effectively applied as an input metering function.

  In the current Internet and information communication networks, as described in Japanese Patent Application Laid-Open Publication No. 2006-33628 “Packet Relay Method and Device” in Patent Document 1, the limit of packet traffic flow into the network, In order to give a discard priority in the network, a metering function for each flow is implemented in the switching device for flow control. Since the metering function generally uses the “general-purpose metering function” referred to in RFC2697 recommendation, RFC2698 recommendation, RFC4115 recommendation, it is possible to easily implement various policies. With regard to the packet data from, a service in which a metering function (packet traffic bandwidth usage measuring function) for each flow is provided is being implemented.

  On the other hand, the connection to the network uses a redundant function such as Link Aggregation (LAG) for the purpose of continuation of service at the time of failure, and packet traffic is physically distributed and input to multiple ports. It is common to be done. Also, from the viewpoint of the range of influence at the time of failure, it is common that the input ports are distributed and operated across a plurality of cards. That is, even if they are the same user, a state occurs in which packet traffic is distributed to physically different ports.

JP 2006-33628 A (pages 8-12)

  However, in the conventional operation mode, a metering function is provided for each input port, so even if an attempt is made to implement a service that applies the metering function for each user, the metering function is physically distributed. Therefore, although the packet data is from the same user, the setting rate for the metering function can only be specified for each (port + user) unit. In other words, since the input metering function is physically distributed for each input port, even if the flow is related to the packet data of the same user, the flow in one input port or the same metering function is used. The metering function could only be implemented for the flow that is input to the block that it has.

  In order to apply such an aggregated metering function that collects the user's packet traffic one by one and avoids the situation like this, it is physically distributed and input in the switch device. In addition, there has been no method other than the method of applying the metering function after switching the packet traffic of the same user and collecting it in one port.

(Object of the present invention)
The present invention has been made in view of such circumstances, and even when packet data is transmitted from one or a plurality of distribution units (input ports, input cards), traffic related to the packet data from each distribution unit is received. Aggregated metering device, aggregated metering method, and aggregated metering program capable of appropriately applying a metering function that is aggregated in the same flow unit and referred to in RFC2697 recommendation, RFC2698 recommendation, RFC4115 recommendation The purpose is to provide.

  In order to solve the above-described problems, the intensive metering device, the intensive metering method, and the intensive metering program according to the present invention mainly adopt the following characteristic configuration.

  (1) A centralized metering device according to the present invention includes one or more distribution units that perform packet data transfer processing according to a general-purpose metering function referred to in RFC2697, RFC2698 recommendation, RFC4115 recommendation, and the distribution unit. Collecting metering device comprising an aggregation unit that collects meter information of packet data for each flow and sets a setting rate indicating a transferable upper limit of packet data for each flow in each of the distribution units The aggregation unit periodically collects packet data meter information for each flow from one to a plurality of the distribution units at predetermined intervals, and sets each distribution unit for each flow. When calculating the set rate for the next cycle, collect from each of the dispersion units until the current cycle The set rate for each flow of each of the distribution units is set such that the sum of each flow per packet data meter information for each flow becomes a value that matches the rate setting information set for each flow in advance. Calculate as a set rate to be set for each flow in each of the distribution units in the next cycle, and transmit the calculated set rate to each of the distribution units that have performed packet data transfer processing on the corresponding flow. , And a setting value for the metering function of the packet data relating to the corresponding flow of each of the distribution units.

  (2) The centralized metering method according to the present invention implements packet data transfer processing according to a general-purpose metering function referred to in RFC2697, RFC2698 recommendation, RFC4115 recommendation, and a packet for each flow in one or more distribution units. Collecting meter information of data, an aggregation type metering method having at least an aggregation step for performing control to set a setting rate indicating a transferable upper limit value of packet data for each flow in each of the dispersion units, The aggregation step periodically collects packet data meter information for each flow from each of the one or more distribution units for each predetermined period, and sets the next cycle for each flow set in each distribution unit When calculating the rate, from each of the dispersion units to the current cycle The set rate for each flow of each of the distribution units is set so that the sum for each flow per cycle of the collected packet data meter information for each flow becomes a value that matches the rate setting information set for each flow in advance. The setting rate to be set for each flow in each distribution unit in the next cycle is calculated, and the calculated set rate is transmitted to each distribution unit that has performed packet data transfer processing on the corresponding flow. Thus, it is set as a setting value for the metering function of the packet data relating to the corresponding flow of each of the distribution units.

  (3) The intensive metering program according to the present invention is characterized in that at least the intensive metering method described in (2) is implemented as a program executable by a computer.

  According to the intensive metering device, the intensive metering method, and the intensive metering program of the present invention, the following effects can be obtained.

  The first effect is that even when flows that are logically the same are physically distributed and inputted to a plurality of dispersion units, they can be summed and metered into one set bandwidth. . This is because a configuration is adopted in which the metering operation of all the dispersion units is integrated and managed by the aggregation unit.

  The second effect is that the general-purpose metering function referred to in the RFC2697 recommendation, RFC2698 recommendation, and RFC4115 recommendation can be used. By linking them, it is possible to easily realize a intensive metering mechanism.

It is a block block diagram which shows an example of an internal structure of the intensive type | mold metering apparatus by this invention. It is a data flowchart which shows an example of operation | movement when packet data are input into the dispersion | distribution part of the intensive metering apparatus of FIG. It is the first half part of the data flowchart which shows an example of operation | movement of the aggregation part of the aggregation type metering apparatus of FIG. It is the second half part of the data flowchart which shows an example of operation | movement of the aggregation part of the aggregation type metering apparatus of FIG. It is a block block diagram which shows an example of an internal structure of the aggregation calculating part in the aggregation part of the aggregation type metering apparatus of FIG.

  Hereinafter, preferred embodiments of an intensive metering device, an intensive metering method, and an intensive metering program according to the present invention will be described with reference to the accompanying drawings. In the following description, the intensive metering device and the intensive metering method according to the present invention will be described. However, the intensive metering method is implemented as a intensive metering program executable by a computer. Needless to say, the intensive metering program may be recorded on a computer-readable recording medium.

(Features of the present invention)
Prior to the description of the embodiments of the present invention, an outline of the features of the present invention will be described first. The present invention aggregates meter information related to packet data of the same flow input from a plurality of ports by a link aggregation (LAG) function and the like, and metering to a predetermined bandwidth set as rate setting information for each flow The main feature is that it is possible to do this, and thus it is possible to measure and control the flow of packet data across multiple ports by distributed processing.

  More specifically, the centralized metering apparatus according to the present invention performs packet data transfer processing by using a general-purpose metering function portion similar to the conventional one, that is, a general-purpose meter referred to in RFC2697 recommendation, RFC2698 recommendation, RFC4115 recommendation. One or a plurality of distribution units having a function implemented according to the ring function, and collecting meter data of packet data for each flow in each distribution unit, and setting a set rate indicating an upper limit value capable of transferring packet data for each flow A configuration is provided in which one aggregation unit having an aggregation function for performing control set in each of the distribution units is provided. The aggregation unit is arranged at a position where it can be connected to all the distribution units.

  Here, each distribution unit has a set rate indicating an upper limit value of the amount of packet data that can be transferred by the metering function based on the RFC 2697 recommendation, the RFC 2698 recommendation, and the RFC 4115 recommendation under the control of the aggregation unit. A set value for the metering function is set for each meter number (that is, for each flow of packet data). On the other hand, the aggregation unit periodically collects meter information on the metering state from each dispersion unit every predetermined period, and the metering function in each dispersion unit operates based on any rate setting in the next period Feedback control is performed to give information indicating what should be done. Furthermore, the aggregation unit uses the set rate calculated so that the sum for each flow of the meter information related to the metering state of each dispersion unit becomes the limit rate set in advance as the rate setting information for each flow as the set rate for the next cycle. By distributing to each dispersion unit, the metering function distributed in one or more is integrated to realize the function of metering into the rate setting information. Thus, by integrating the metering function of one or a plurality of distribution units, each distribution unit performs uniform rate setting for packet data from the same user, that is, packet data having the same meter number as the same flow. The function that can be done is realized.

(Configuration example of embodiment)
Next, a configuration example of an embodiment of the intensive metering device according to the present invention will be described using the block configuration diagram of FIG. FIG. 1 is a block configuration diagram showing an example of an internal configuration of a centralized metering device according to the present invention.

  As shown in FIG. 1, the intensive metering device includes one or more dispersion units 101 to 10m (m: positive integer) having general-purpose metering function parts defined in RFC2697 recommendation, RFC2698 recommendation, and RFC4115 recommendation. And at least one aggregation unit 20 having an aggregation function, and all the distribution units 101 to 10 m are configured to be connected to the aggregation unit 20.

  The distribution unit 101 includes at least a packet processing unit 111, a meter unit 121, a meter setting unit 131, and a meter control unit 141. The internal configuration of other dispersion units (dispersion unit 10 (m−1), 10 m, etc.) is also the same as that of the dispersion unit 101.

  The packet processing unit 111 of the distribution unit 101 extracts the information regarding the meter number specifying the flow of the input packet data and the packet information indicating the packet length, and stores the meter for each flow stored in the meter unit 121. In the part which updates the information and appropriately processes and outputs the input packet data based on the comparison result between the meter information and the set value for each meter number set in the meter setting unit 131 is there. Further, the meter unit 121 is a part that holds meter information (information on bandwidth usage) for each flow, that is, for each meter number. The meter number is a number assigned to each flow in order to identify each user's packet flow, and is based on the VLAN-ID of the packet data, the source MAC address, the destination MAC address, and the like. Predefined.

  That is, the meter unit 121 is configured to include a storage unit that stores a meter group including one or more pieces of meter information, and a meter number for identifying each meter information is assigned thereto. Here, even the packet data of the same flow with the same meter number is distributed and flowed into one or a plurality of distribution units 101 to 10 m by the link aggregation (LAG) function or the like. Meter numbers are scattered in the plurality of dispersion units 101 to 10 m.

  For this reason, in order to enable uniform rate setting for packet data of the same flow, that is, packet data having the same meter number, the aggregation unit 20 sets the same meter number as described later. It is configured so that meter information can be aggregated.

  The meter setting unit 131 stores a set value of each meter number, that is, a rate set value indicating the upper limit value of the packet data amount that can be transferred, and a burst value. Meter information of each meter number in the meter unit 121 By coordinating with, general-purpose metering functions defined in RFC2697 recommendation, RFC2698 recommendation, and RFC4115 recommendation can be implemented in the distribution unit 101.

  The aggregation unit 20 of the intensive metering device shown in FIG. 1 includes at least a collection unit 21, a setting unit 22, an aggregation calculation unit 23, and a rate setting unit 24. The collection unit 21 is a part that collects meter information for each flow in all the dispersion units 101 to 10 m, and the aggregation calculation unit 23 has the same meter information from each of the dispersion units 101 to 10 m collected by the collection unit 21. Each of the distribution units 101 to 10 m is calculated using the result of performing the calculation to be aggregated for each meter number, that is, for each same flow, and calculating the difference with the rate setting information for each meter number set in the rate setting unit 24. This is a part that calculates a set rate of the next cycle to be set to and notifies the setting unit 22 of the set rate.

  The setting unit 22 transmits the set rate for each flow in the next cycle output from the aggregation calculation unit 23 as control information related to rate control for each flow to one or a plurality of distribution units 101 to 10 m. This is a part for setting as a setting value for the metering function in each of the dispersion units 101 to 10 m. The rate setting unit 24 includes rate setting information that is meter-set in advance as a system that uses the centralized metering device, that is, the same meter number distributed to one to a plurality of distribution units 101 to 10m. Rate setting information that is an allowable upper limit value for determining whether or not the sum of meter information is a rate that allows transfer of packet data of the meter number is preset and stored for each meter number (each flow) Has been.

(Description of operation of embodiment)
Next, an example of the operation of the central metering device shown in FIG. 1 as a configuration example of an embodiment of the central metering device according to the present invention will be described.

(1) Operation at the time of packet data input First, an example of the operation when packet data is input to each of the distribution units 101 to 10m of the centralized metering device of FIG. 1 will be described with reference to the data flowchart shown in FIG. I will explain. FIG. 2 is a data flowchart showing an example of an operation when packet data is input to the distribution unit 101 of the centralized metering device of FIG. 1, and the other distribution units 10 (m−1), 10 m, etc. Even when packet data is input, the same operation is performed in each distribution unit.

  In the data flowchart of FIG. 2, first, when packet data is input to the distribution unit 101 of the centralized metering device, the packet processing unit 111 performs VLAN-ID and source MAC address included in the packet data, Based on the destination MAC address, the meter number table set in advance in the storage unit in the packet processing unit 111 is referred to determine the meter number corresponding to the packet data, and packet information such as the packet length is stored. Extracted and sent to the meter unit 121 (sequence Seq1).

  The meter unit 121 that has received the packet information such as the meter number and the packet length from the packet processing unit 111 first notifies the meter setting unit 131 of the meter number received from the packet processing unit 111, thereby providing the meter setting unit 131. The set value of the corresponding meter number is extracted from the set values (that is, the rate set value and burst value) of each meter number set and registered in the storage unit (sequence Seq2).

  Further, the meter unit 121 updates the meter information of the corresponding meter number using the packet length received as the packet information from the packet processing unit 111, and returns the updated meter information and the meter setting unit 131. The set value related to the corresponding meter number is compared, and the result of determining whether or not the updated meter information is larger than the set value is sent to the packet processing unit 111 as a meter result (measurement result) (sequence Seq3 ).

  The packet processing unit 111 that has received the meter result from the meter unit 121 performs processing on the input packet data based on the received meter result (sequence Seq4). In other words, if the meter information is within the set value as the received meter result, the input packet data is transferred, whereas if the meter information exceeds the set value, The transfer operation of the input packet data is suppressed and processing such as discarding is performed.

(2) Operation of Aggregation Unit 20 Next, an example of the operation of the aggregation unit 20 of the aggregation type metering device of FIG. 1 will be described with reference to the data flowcharts shown in FIGS. 3A and 3B. FIG. 3A shows the first half of a data flowchart showing an example of the operation of the aggregating unit 20 of the intensive metering apparatus of FIG. 1, and FIG. 3B shows the latter half of the data flowchart.

  When the data collection timing set as a predetermined cycle is reached, the meter that requests transmission of meter information from the collection unit 21 of the aggregation unit 20 to each of the meter control units 141 to 14m of the distribution units 101 to 10m An information request is transmitted (sequence Seq21). Here, a timer is prepared in the collection unit 21, and time management is performed to determine whether or not the data collection timing has been reached. In the present embodiment, the collection unit 21 will explain a case where a meter information request is periodically transmitted to each of the distribution units 101 to 10m every time the data collection timing is reached. A meter information request may be transmitted to each of the dispersion units 101 to 10m at the time when a trigger due to a change in packet data weight or flow rate is detected.

  In each of the meter control units 141 to 14m of each of the distribution units 101 to 10m that has received the meter information request transmitted from the collection unit 21 of the aggregation unit 20, the meter information request received to each of the meter units 121 to 12m. Is transferred (sequence Seq221 to Seq22m).

  The meter units 121 to 12m that have received the meter information requests transferred from the meter control units 141 to 14m of the respective dispersion units 101 to 10m receive the meter information stored in the respective storage units as meter information requests. Is returned to the meter control units 141 to 14m of the transfer source (sequence Seq231 to Seq23m).

  Each of the meter control units 141 to 14m that has received the meter information returned from the meter units 121 to 12m of the respective dispersion units 101 to 10m serves as the transmission source of the meter information request. To the collection unit 21 of the aggregation unit 20 (sequence Seq241 to Seq24m).

  The collection unit 21 of the aggregation unit 20 that has received the meter information returned from the meter units 121 to 12m of the respective dispersion units 101 to 10m confirms that the meter information from all the dispersion units has been returned. The meter information received from each of the dispersion units 101 to 10m is sent to the aggregation calculation unit 23 (sequence Seq25).

  The aggregation calculation unit 23 aggregates meter information having the same meter number by summing up the meter information from all the distribution units transferred from the collection unit 21 to obtain one sum, and adds each meter number. Meter information (information on bandwidth usage) 1, 2,..., I,..., J (i, j: positive integer, i <j) and stored and received meter information (for each flow of packet data) Numbers are sequentially selected one by one, and the rate setting information for the corresponding meter number is selected from the rate setting information for each meter number set and registered in advance in the rate setting information storage unit of the rate setting unit 24. Extracted and returned (sequence Seq26).

  Furthermore, the aggregation calculation unit 23 performs calculation processing regarding the meter information for each meter number received from the collection unit 21 and the rate setting information of each corresponding meter number returned from the rate setting unit 24. The setting rate of the meter number corresponding to each of the dispersion units 101 to 10m is determined, and the setting rate determined as the calculation result is sent to the setting unit 22 as the setting rate to be set in the next cycle (sequence Seq27). ). Here, the set rate determined as the calculation result is information corresponding to the bandwidth allocation rate in each of the dispersion units 101 to 10m.

  The setting unit 22 that has received the setting rate of each meter number determined as the calculation result uses the setting rate of each meter number as setting information indicating the setting rate of the next cycle to be updated. It transmits with respect to each of the control parts 141-14m (sequence Seq28).

  Receiving the setting information transmitted from the setting unit 22 of the aggregation unit 20, each of the meter control units 141 to 14m of each of the distribution units 101 to 10m transmits the received setting information to the respective meter setting units 131 to 13m. (Sequence Seq291 to Seq29m). Each of the meter setting units 131 to 13m that has received the setting information from each of the meter control units 141 to 14m is for the metering function held in the storage unit of each of the meter setting units 131 to 13m according to the received setting information. Is updated (sequence Seq301 to 30m).

(3) Operation of Aggregation Operation Unit 23 of Aggregation Unit 20 Next, an example of a more detailed operation of the aggregation operation unit 23 in the aggregation unit 20 of the aggregation type metering device of FIG. This will be described with reference to the drawings. FIG. 4 is a block configuration diagram showing an example of the internal configuration of the aggregation calculation unit 23 in the aggregation unit 20 of the aggregation metering device of FIG. In FIG. 4, in order to explain an example of a more detailed operation of the aggregation calculation unit 23, the internal configuration of the aggregation calculation unit 23 of the aggregation type metering device includes a rate setting unit 24 and meter units of the respective dispersion units 101 to 10 m. It has shown with the structure of the memory | storage part of 121-12m.

  Here, the total number of meter numbers assigned to each flow is j, where meter numbers 1, 2,..., I,..., J (i, j: positive integer, i <j). The meter information stored in the meter storage units of the meter units 121 to 12m of the dispersion units 101 to 10m is meter information 11, 12, ..., 1i, ..., 1j, ..., meter information m1, m2, respectively. , ..., mi, ..., mj. The aggregation meter storage unit 232 of the aggregation unit 20 stores the aggregation meter stored as a correction value for correcting the set rate of the next period for each meter number (for each flow) set in each of the dispersion units 101 to 10 m. , I,..., J, and the rate setting information storage unit of the rate setting unit 24 stores each meter number (for each flow) as a system using the aggregated metering device. Assume that the rate setting information stored as a value indicating the upper limit value of packet data transfer is rate setting information 1, 2,..., I,.

  As shown in the block configuration diagram of FIG. 4, the aggregation calculation unit 23 in the aggregation unit 20 of the intensive metering apparatus includes a calculation unit 231 and an aggregation meter storage unit 232. In the aggregate meter storage unit 232, meter information 11, 12 for each of the meter numbers 1, 2,..., I, j received from the meter units 121 to 12m of the dispersion units 101 to 10m via the collection unit 21. .., 1j,..., And meter information m1, m2,..., Mi,. Aggregated meters 1, 2,..., I,..., J calculated as correction values based on the result of summing up and aggregating 10 m meter information are stored.

  Further, the calculation unit 231 includes the aggregate meters 1, 2,..., I, j for each of the meter numbers 1, 2,..., I stored in the aggregate meter storage unit 232, and the rate setting unit 24. , I,..., J and rate setting information 1, 2,..., I, j, and meter numbers 1, 2,. , I,..., J (ie, effective distribution obtained by performing packet data transfer processing corresponding to each meter number 1, 2,..., I,. The values obtained as a result of the calculation with each of the distribution units) are set rates 1, 2,..., I,. 10 m (1 ≦ k ≦ 1) corresponding to the effective dispersion portion ) It is transmitted to each of the meter control unit 14k.

  The basic concept of the aggregation calculation unit 23 will be described in more detail as follows. First, the calculation unit 231 of the aggregation calculation unit 23 receives meter information for each of the meter numbers 1, 2,..., I,..., J from the meter units 121 to 12m of the dispersion units 101 to 10m via the collection unit 21. 11, 12, ..., 1i, ..., 1j, ..., meter information m1, m2, ..., mi, ..., mj are periodically collected at predetermined intervals.

  Here, meter information 11, 12,..., 1i,..., 1j, ..., meter information m1, m2, ..., mi,. The amount of packet data for each flow in which packet data passes through each of the distribution units 101 to 10m during the current cycle after the end of the previous cycle is shown. Of the meter information 11, 12,..., 1i,..., 1j,. Paying attention to the meter information 1i,..., mi regarding the i-th packet data, in the calculation unit 231, for each of the distribution units 101 to 10m, the packet data related to the meter number i from the end of the previous cycle to the current cycle It is determined whether or not the input is a valid dispersion unit, and in the case of each dispersion unit 10k (k: positive integer, 1 ≦ k ≦ m) determined as the effective dispersion unit, the band is used in this cycle. It is possible to determine how much the effective meter information (effective meter amount) is.

  Further, the calculation unit 231 includes rate setting information 1 and 2 in the rate setting information storage unit of the rate setting unit 24 that is preset and registered as a band limit rate for each of the meter numbers 1, 2,..., I,. .., I,..., J, the meter number currently focused on acquires the i-th rate setting information i, and the acquired meter number indicates the i-th rate setting information i. By dividing by the number of effective meters (number of effective dispersion units 10k) for the i-th, the packet number is the packet data in the next period for each of the effective dispersion units 10k among the distribution units 101 to 10m with respect to the i-th packet data The set rate i indicating the upper limit of the amount of packet data that can be transferred is determined and transmitted to each of the effective distribution units 10k via the setting unit 22 That.

  The meter controller 14k of each of the effective dispersion units 10k among the dispersion units 101 to 10m that has received the set rate i stores the set rate i related to the i-th meter number in the storage unit of each meter setting unit 13k. By setting, the setting value i of the storage unit is updated.

  As described above, regarding the i-th packet data with the meter number, the setting value i set in the storage unit of the meter setting unit 13k of each of the effective distribution units 10k among the distribution units 101 to 10m is obtained from the aggregation unit 20. By periodically updating the transmitted set rate i, each packet processing unit 11k of the effective distribution unit 10k operates at a rate equal to or lower than the set rate i determined by the aggregation unit 20. Operates without the total bandwidth (total rate) of all the distribution units 101 to 10m of the i-th packet data exceeding the rate setting information i preset and registered in the rate setting information storage unit of the rate setting unit 24. It will be.

  However, each of the packet processing units 11k of the effective distribution unit 10k among the distribution units 101 to 10m is based on the rate of the set rate i (the meter number is the set rate related to the i-th) determined only by such a basic concept. When the operation is performed, there is a difference between the actual inflow amount of packet data in the next period and the set rate i (that is, the set value i in the dispersion units 101 to 10m) due to the following two factors.

(1) When the number of effective dispersion units 10k in the next period increases from the current period,
Among the dispersion units 101 to 10m, when there is an input of new packet data related to the meter number i in the dispersion unit that has been invalid until the current cycle, and an increase in the effective meter amount using the bandwidth occurs, a new The rate used by the effective distribution unit 10k may use an excessive band with respect to the set rate i.

(2) When there is a remaining band in the set value (set rate) assigned to each effective distribution unit 10k in the current cycle,
Of the respective dispersion units 101 to 10m, the sum of the usage rates of the current period of the packet data relating to the meter number i input to each of the effective dispersion units 10k to which the setting rate i relating to the meter number i is assigned (the total effective dispersion unit 10k The sum of the usage rates) is the sum of the set values i assigned to each effective dispersion unit 10k in this cycle, that is, the sum of the set rates i (that is, the meter number set and registered in the rate setting unit 24 is the i-th rate). If there has been a case where the setting information i) is less than the setting information i), there is a possibility that a bandwidth shortage that is smaller than the assigned setting rate i may occur in the next period.

  In order to correct the difference occurring in the set rates 1, 2,..., I,..., J in the basic concept as described above, the aggregation calculation unit 23 uses each meter number 1, 2,. Aggregation meters 1, 2,..., i,. Aggregation meters 1, 2,..., I,..., J are set values 1, 2,..., I,. is a rate correction value for supplying corrections related to i,..., j. When determining the set rate 1, 2,..., i,. 2,..., I,..., And j are increased or decreased to correct the excess band and insufficient bandwidth up to the previous period.

  In other words, the aggregation calculation unit 23 of the aggregation unit 20 sets each meter number (for each flow) as a correction value for correcting the set rate of the next cycle for each meter number (for each flow) set in each of the distribution units 101 to 10 m. The aggregation meter is held, and the difference between the total meter information of the packet data for each meter number (for each flow) and the rate setting information for each meter number (for each flow) is determined by the aggregate rate up to the previous cycle for each flow. The corrected value is held for each flow in the aggregation meter storage unit 232 as the aggregation rate up to the current cycle.

  Here, the aggregation meter Ci relating to the flow i (packet data of the meter number i) among the values of the aggregation meters 1, 2,..., J held as corrections up to the present cycle, and the aggregation meter Ci. Of the next cycle notified to each of the dispersion units 101 to 10m, obtained by performing correction using the value of 1, 2,..., I, j. Are given by the following equations (1) and (2).

  Holding meter Ci = (Ri-Ai) -Cpi (1)

Here, each element in Formula (1) has the following meaning.
Ai = Σ meter information 1i to mi
: Means the rate for the flow i used in each of the distribution units 101 to 10m in the current cycle (that is, the sum of the meter information of the packet data regarding the flow i)
Ri = Rate setting information i
: Means a value set in advance as the upper limit value of the packet data amount relating to the flow i that can be transferred as the central metering device (that is, the sum of the set rates i before correction relating to the flow i to be set in the next cycle).
Cpi = aggregation meter pi up to the previous period
: Means a correction for correcting the set rate i related to the flow i up to the previous cycle.

    Next cycle set rate SRi = (Ri + Ci) / Ti (2)

Here, the element Ti in the formula (2) has the following meaning.
Ti = number of effective meters: means the number of effective distribution units 10k that have performed packet data transfer processing on the flow i by the current cycle among the distribution units 101 to 10m.
When the set rate SRi of the next cycle is “0” or less, notification is given to each of the dispersion units 101 to 10 m as “0”.

  By performing the arithmetic processing as described above, a rate in which the sum of the meter information of the packet data for each flow collected from each of the dispersion units 101 to 10 m up to the current cycle per cycle is set and registered in advance for each flow. The setting rate of each of the dispersion units 101 to 10m is calculated as a setting rate to be set in the next period so that the value matches the setting information, and the calculated setting rate corresponds to the setting of the distribution units 101 to 10m. Can be transmitted to each of the effective distribution units 10k that have performed the transfer processing of the packet data related to the flow to be set, and set as a setting value for the metering function of the packet data related to the corresponding flow of each of the effective distribution units 10k become.

(Explanation of effect of embodiment)
As described in detail above, the following effects are obtained in the present embodiment.

  The first effect is that even when the same flow is logically distributed and input to the plurality of distribution units 101 to 10m, it can be summed and metered to one set bandwidth. It can be done. The reason is that a configuration is adopted in which the aggregation unit 20 integrates and manages the metering operations of all the dispersion units 101 to 10 m.

  The second effect is that the general-purpose metering function referred to in the RFC2697 recommendation, the RFC2698 recommendation, and the RFC4115 recommendation can be used. By linking the two, it is possible to easily realize a intensive metering mechanism.

  The configuration of the preferred embodiment of the present invention has been described above. However, it should be noted that such embodiments are merely examples of the present invention and do not limit the present invention in any way. Those skilled in the art will readily understand that various modifications and changes can be made according to a specific application without departing from the gist of the present invention.

  This application claims the priority on the basis of Japanese application Japanese Patent Application No. 2012-157247 for which it applied on July 13, 2012, and takes in those the indications of all here.

DESCRIPTION OF SYMBOLS 20 Aggregation part 21 Collection part 22 Setting part 23 Aggregation calculation part 24 Rate setting part 101 Dispersion part 10 (m-1) Dispersion part 10m Dispersion part 111 Packet processing part 121 Meter part 131 Meter setting part 141 Meter control part 231 Operation part 232 Aggregation meter storage

Claims (7)

  One or more distribution means for performing packet data transfer processing according to a general-purpose metering function referred to in RFC2697, RFC2698 recommendation, RFC4115 recommendation, and collecting packet data meter information for each flow in the distribution means And an aggregating unit configured to control each of the distributing units to set a setting rate indicating a transferable upper limit of packet data for each flow, and the aggregating unit is periodically set to 1 to 1 every predetermined period. When collecting the meter information of the packet data for each flow from each of the plurality of distribution means and calculating the set rate of the next period for each flow set in each of the distribution means, from each of the distribution means to the current period Per cycle of packet data meter information collected for each flow The set rate for each flow of each of the distribution means is set for each flow of each of the distribution means in the next period so that the sum for each row matches the rate setting information set for each flow in advance. Calculated as the power setting rate, and the calculated setting rate is transmitted to each of the distribution means that performed the transfer processing of the packet data related to the corresponding flow, and the packet data related to the corresponding flow of each distribution means is transmitted. An aggregated metering device that is set as a set value for a metering function. The aggregation means holds an aggregation meter for each flow as a correction value for correcting the set rate of the next period for each flow set in each of the distribution means, and includes meter information of packet data for each flow of the current period. claims, characterized in that holds the difference between the rate setting information for each sum and flow the value corrected by aggregation rate before the period of each flow for each flow as the aggregate rate of ever cycle Item 6. The integrated metering device according to Item 1. For the flow of the i-th (i: arbitrary positive integer) meter number, the rate setting information set in advance as the upper limit value of the packet data amount that can be transferred is Ri, and the packets of the current period collected from each of the distribution means Assuming that the sum of the meter information of data is Ai and the value of the aggregate rate up to the previous period is Cpi, Ci indicating the aggregate rate up to the current period held by the aggregation means is
Ci = (Ri−Ai) + Cpi
In addition, if the total number of the distribution means that have performed the packet data transfer operation related to the flow of the i-th meter number up to this cycle is Ti, the corrected value set as the set value in each of the distribution means SRi indicating the set rate is
SRi = (Ri + Ci) / Ti
The intensive metering device according to claim 2, wherein   The packet data transfer process is performed in accordance with a general-purpose metering function referred to in RFC2697, RFC2698 recommendation, RFC4115 recommendation, packet data meter information is collected for each flow in one or more distribution means, and packets for each flow are collected. It has at least an aggregation step for controlling each of the distribution means to set a set rate indicating an upper limit value at which data can be transferred, and the aggregation step periodically includes one or a plurality of the distribution means at predetermined intervals. Collecting meter information of packet data for each flow from each, and calculating the set rate of the next cycle for each flow set in each of the distribution means, for each flow collected from each of the distribution means up to the current cycle Of packet data per cycle The set rate for each flow of each of the distribution means should be set for each flow for each of the distribution means in the next period so that the sum for each of the values matches the rate setting information set for each flow in advance. A set rate is calculated, and the calculated set rate is transmitted to each of the distribution means that has performed packet data transfer processing for the corresponding flow, and a packet data meter for the corresponding flow of each of the distribution means An aggregated metering method characterized in that it is set as a set value for a ring function. In the aggregation step, an aggregation meter for each flow is held as a correction value for correcting the set rate of the next cycle for each flow set in each of the distribution means, and the meter information of the packet data for each flow of the current cycle claims, characterized in that holds the difference between the rate setting information for each sum and flow the value corrected by aggregation rate before the period of each flow for each flow as the aggregate rate of ever cycle Item 5. The intensive metering method according to Item 4. For the flow of the i-th (i: arbitrary positive integer) meter number, the rate setting information set in advance as the upper limit value of the packet data amount that can be transferred is Ri, and the packets of the current period collected from each of the distribution means If the sum of meter information of data is Ai, and the value of the aggregate rate up to the previous period is Cpi, Ci indicating the aggregate rate up to the current period held in the aggregation step is
Ci = (Ri−Ai) + Cpi
In addition, if the total number of the distribution means that have performed the packet data transfer operation related to the flow of the i-th meter number up to this cycle is Ti, the corrected value set as the set value in each of the distribution means SRi indicating the set rate is
SRi = (Ri + Ci) / Ti
The intensive metering method according to claim 5, wherein:   An aggregated metering program, wherein the aggregated metering method according to claim 4 is implemented as a program executable by a computer.

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