JP6425247B2 - Virtualization infrastructure selection apparatus and method, and program - Google Patents

Description

  The present invention relates to a technology for selecting a network function virtual infrastructure (NFVI) for realizing a virtual machine (VM) which is a virtualized network function.

  The provider of NFVI provides NFVaaS (NFV as a Service: provision of virtualized NW function) and NFVIaaS (NFVI as a Service: service of providing NFVI) based on the service request from the user. In this case, a physical server that operates application software for realizing a virtual machine corresponding to the service request from an NFVI configured of at least one physical server deployed in at least one data center (DC) Was selected.

  At this time, since the service request (hereinafter, referred to as “virtual application request”) itself is not a request of physical resources specifically required (for example, 16 GB or more of free memory etc.), conventionally The physical server was selected based on it.

  Also, in general, physical servers that configure NFVI are often deployed with a margin in accordance with demand forecasting, so it is easy to simply select an available physical server in response to a virtual application request, or when there are multiple candidates. Selected in sequence or at random according to the machine number etc. in the order of occurrence of the request.

Miyasaka Masahiro, Kuwahara Hideki, Hori Umeiki, Tsuchiya Toshiaki, "Examination of containment design based on virtual resource management", IEICE technical report, NS 2005-164, p 25-28, March 2, 2006 JiroEto, "legOS commentary Chapter 4 Memory management-Memory management algorithm-Best fit method", [online], 1999, [Search on July 10, 2015], Internet <URL: http: //www.ylw.mmtr .or.jp / ~ trustno1 / legos / legos_4.html>

  By the way, when selecting a physical server as described above, it is necessary to select a data center that satisfies the requirements (for example, delay time) of the virtual application to be deployed. Here, in order to meet the requirements of the virtual application, it is necessary to consider both network resources and data center resources. For example, FIG. 1A shows that selecting and considering only between the user and DC results in the shortest (minimum delay time) between the user and DC, but the total delay time to the external network increases. On the other hand, in Fig. 1 (b), if the virtual application only communicates between the user and the virtual application (there is no communication between the virtual application and the external network), it is the same whether deployed in DC1 or DC2 Although there is a virtual application, it is shown that it is preferable to select DC1 from the viewpoint of deployment cost if there is communication between a user, virtual application, and an external network.

  However, conventionally, in response to a virtual application deployment request, selection of an appropriate data center or physical server according to the communication characteristics of the virtual application has not been performed.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a virtualization infrastructure selection apparatus, method, and program capable of selecting a data center suitable for communication characteristics of a virtual application.

In order to achieve the above object, the present invention is to realize a virtual machine implemented by virtualized network functions der Ri virtual application, at least one physical server deployed in at least one data center A virtualization infrastructure selection device for selecting a data center to be a deployment destination of a virtual application based on a deployment request of a virtual application from a user in the virtualization infrastructure configured by Data center extraction information storage means for storing and a communication path pattern of a virtual application relating to the allocation request are discriminated, and a data center extraction for extracting data centers satisfying the quality request information included in the allocation request in the communication path pattern Means and the data center extraction means Characterized in that from the data center and a data center selection means for selecting data center based on the communication characteristic of the virtual application according to the deployment request.

  According to the present invention, it is possible to select an optimal data center according to the communication characteristic of the virtual application.

The figure which illustrates the subject of this invention Diagram to explain deployment example of data center in carrier network A diagram for explaining an outline of data center selection processing in the present invention Configuration diagram of virtualization base selection device Diagram explaining an example of classification of virtual application Diagram for explaining an example of a virtual application deployment request Diagram explaining an example of data center extraction processing Diagram explaining an example of data center selection processing

  A virtualization platform selection apparatus according to an embodiment of the present invention will be described with reference to the drawings. First, prior to the description of the virtualization infrastructure selection device, an example of deployment of a data center to be subjected to selection processing will be described.

  FIG. 2 is a deployment example of a data center in a carrier network. As shown in FIG. 2, the carrier network is composed of a plurality of transfer devices 15, and some of the transfer devices 15 disposed at the edge of the network are installed at a receiving station that accommodates the user 10. The carrier network has a hierarchical structure in which some transfer devices 10 accommodate a plurality of transfer devices 15 in part from the viewpoint of geographical requirements, communication efficiency, etc., and a plurality of transfer devices 10 are connected to each other It also has a mesh structure in part. Some transfer devices 15 function as gateways with external networks. It should be noted that the transfer device 10 connected to the external network is not only the transfer device 15 with the highest aggregation level (highest hierarchy). The data center 20 is accommodated in any of the transfer devices 15. In the example of FIG. 2, a virtual application (hereinafter referred to as “virtual application”) 31 is deployed in the data center 20 e connected to the transfer device 15 e. Communication between the virtual application 31 and the user 10a is performed via the communication devices 15a, 15c, and 15e. Communication between the virtual application 31 and the external network is via the communication devices 15c and 15e. Further, in the example of FIG. 2, the virtual application 32 is deployed in the data center 20 c connected to the transfer device 15 c. The virtual application 32 does not communicate with the external network. Communication between the virtual application 32 and the user 10c is via the communication devices 15b and 15c.

  The virtualization infrastructure selecting apparatus according to the present invention selects an optimal data center in response to a virtual application deployment request from a user in such a network environment. The concept of data center selection in the present invention will be described with reference to FIG.

  In the present invention, first, the communication path pattern of the virtual application related to the virtual application deployment request is determined, and a data center satisfying the quality request information included in the virtual application deployment request in the communication path pattern is extracted. Next, a data center is selected from among the extracted data centers based on the communication characteristics of the virtual application related to the virtual application deployment request.

  In FIG. 3, a virtual application 60 built on a virtual machine (a virtual machine is built on a physical machine) in the data center 50 communicates with the user 70 and also communicates with the external network 80. It is an example corresponding to the communication path pattern of performing. Here, it is assumed that an allowable delay time (70 ms or less in FIG. 3) between the user and the virtual application is set as the quality request in the virtual application deployment request. In this case, since the delay request is not satisfied in FIG. 3C, the data center 50c is excluded from the extraction targets. On the other hand, since the delay request is satisfied in FIGS. 3A and 3B, the data center centers 50a and 50b are to be extracted.

  Next, in the example of FIG. 3, the virtual application 60 has a communication characteristic that the communication band with the user 70 is large and the communication band with the external network 80 is small. Here, in order to reduce the amount of communication in the network, that is, the network cost, it is desirable to select the data center 50 as close as possible to the user 70. On the other hand, in order to reduce the cost of deploying the data center 50, it is desirable to select the data center 50 as far as possible from the user 70. Here, the deployment cost is an index calculated from the dispersion value (degree of integration) of the data center 50 and the distance (closeness) between the data center 50 and the user 70, and represents the cost required for the deployment of the data center 50. It is a thing. Also, the variance value is a larger value as it goes below the aggregation level of the data center 50 (therefore, the receiving station level goes below). In the present invention, the communication cost and the deployment cost are calculated from the communication characteristics of the virtual application 60, the total cost which is the sum of both is calculated, and the data center 50 having a small total cost is selected.

  The configuration of the virtualization infrastructure selection device will be described with reference to FIG. As shown in FIG. 4, the virtualization infrastructure selection device 100 includes a data center extraction unit 110, a data center selection unit 120, and a database 130.

  The database 130 stores and holds deployment information 131 of data centers in the network. Data center deployment information 131 stores, at least, information on the quality of delay time, in particular, the quality information related to the communication with the user and the communication with the external network, in addition to the position information of the data center in the network. ing. Further, the database 130 stores and holds configuration information 132 of the network as shown in FIG.

  When receiving the virtual application deployment request from the user, the data center extraction unit 110 determines the communication path pattern in the network of the virtual application related to the deployment request, and satisfies the quality request included in the deployment request in the communication path pattern. One or more data centers are extracted from database 130. If the network scale is large, it is conceivable that there are many data centers that satisfy the quality requirement, so the data center extraction unit 110 satisfies the quality requirement and has one or more highest quality data centers. It is preferable to extract.

  An example of the communication path pattern will be described with reference to FIG. In the example of FIG. 5, the communication path pattern is divided into two: an application termination which communicates only between the user and the virtual application, and an application via which communication is performed between the user and the virtual application and between the virtual application and the external network. There is a pattern. An example of the former virtual application is a storage application. Examples of the latter virtual application include a cache server application, a router application, and a FW (FireWall) application.

  FIG. 6 shows an example image of a virtual application deployment request. In the virtual application deployment request, an allowable delay time (the smaller the value, the higher the quality) is set as the quality requirement. The allowable delay time may be set for each of the user and virtual application and between the virtual application and the external network in accordance with the communication path pattern, or even if the allowable delay time between the user and the external network is set. Good. Also, a setting of "allow any delay time" is also possible.

  The data center selection unit 120 selects an optimal data center from among the one or more data centers selected by the data center extraction unit 110 in consideration of the communication characteristics of the virtual application. In the present embodiment, the data center selection unit 120 calculates the network cost and the deployment cost for each data center extracted by the data center extraction unit 110, and calculates the total cost by taking the sum of the network cost and the deployment cost. . Then, the data center selection unit 120 selects the data center with the smallest total cost.

  Here, the network cost can be obtained by integrating the line cost in each communication section and the communication amount for communication in the network performed by a certain virtual application. The communication section is between the user and the virtual application for the “application termination” virtual application in the example of FIG. 5 and is between the user and the virtual application, between the virtual application, and the external network for the “via application” virtual application. A delay time can be used as the line cost. The deployment cost is the amount of communication between the user and the virtual application multiplied by the distributed value of the data center (see above). The communication amount of each communication section is included in the virtual application deployment request as shown in FIG.

  An example of data center selection by the virtualization infrastructure selection apparatus 100 according to the present embodiment will be described with reference to FIGS. 7 and 8. In the example of FIG. 7, the virtual application deployment request is a “via via application” type virtual application, the delay allowance time between the user and the virtual application is 70 ms or less, and the communication amount between the user and the application is 10 Mbps. It is assumed that the amount of communication between the application and the external network is 1 Mbps.

  The data center extraction unit 110 refers to the database 130 and is a data center having a delay time of 70 ms or less between the user and the virtual application, and the total delay time, that is, the delay time between the user and the virtual application and the virtual time Extract one or more data centers with the smallest sum with the delay time between the app and the external network. The example of FIG. 7 shows that three data centers DC1, DC2 and DC3 are selected.

  Next, as shown in FIG. 9, the data center selection unit 120 calculates the network cost and the deployment cost for each data center DC1 to DC3, calculates the total cost which is the sum thereof, and the data center having the smallest total cost. Select DC1 as the processing result.

  As described above, according to the virtualization infrastructure selection device 100 according to the present embodiment, it is possible to select an appropriate data center according to the communication characteristic of the virtual application.

  As mentioned above, although one embodiment of the present invention was explained in full detail, the present invention is not limited to this. For example, the data structure of the virtual application deployment request, the network configuration, and the like in the above-described embodiment are merely examples, and the present invention can be practiced with other configurations.

100 ... virtualization base selection device 110 ... data center extraction unit 120 ... data center selection unit

Claims (7)

For implementing the virtual machine implemented by virtualized network functions der Ri virtual application, the virtualization infrastructure composed of at least one physical server is deployed in at least one data center, from a user A virtualization infrastructure selection device for selecting a data center to which a virtual application is to be deployed based on the virtual application deployment request of
Data center deployment information storage means for storing deployment information of data centers in the network;
Data center extracting means for determining a communication path pattern of the virtual application related to the deployment request, and extracting a data center satisfying the quality request information included in the deployment request in the communication path pattern;
And a data center selection means for selecting a data center based on the communication characteristics of the virtual application related to the deployment request among the data centers extracted by the data center extraction means. The data center selecting means calculates a cost required for a virtual application for each data center extracted by the data center extracting means, and selects a data center based on the calculated cost. Virtualization infrastructure selection device. The virtualization infrastructure selection apparatus according to claim 2, wherein the calculated cost includes a communication cost in a network for communication related to a virtual application. The virtualization infrastructure selection apparatus according to claim 2 or 3, wherein the calculated cost includes a deployment cost of a data center in the network. The quality request information includes allowable delay time information of communication related to a virtual application in the network,
The virtualization infrastructure selection apparatus according to any one of claims 1 to 4, wherein the data center extraction unit extracts a data center that satisfies allowable delay time information. For implementing the virtual machine implemented by virtualized network functions der Ri virtual application, the virtualization infrastructure composed of at least one physical server is deployed in at least one data center, virtualization infrastructure selection device, a virtual base selection method of selecting a data center as the installation destination of the virtual application on the basis of the deployment requirements of virtual applications from the user,
The virtualization infrastructure selection apparatus comprises data center deployment information storage means for storing deployment information of data centers in the network,
The data center extraction means of the virtualization infrastructure selection device determines the communication path pattern of the virtual application related to the deployment request, and extracts a data center satisfying the quality request information included in the deployment request in the communication path pattern Data center extraction step,
The data center selecting unit of the virtualization infrastructure selecting apparatus further includes a data center selecting step of selecting a data center from among the data centers extracted in the data center extracting step based on the communication characteristic of the virtual application related to the deployment request. A virtualization infrastructure selection method characterized by A program for causing a computer to function as each means of the virtualization infrastructure selection device according to any one of claims 1 to 5.

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