WO2014112585A1 - 通信システム、ノード、制御装置、通信方法およびプログラム - Google Patents
通信システム、ノード、制御装置、通信方法およびプログラム Download PDFInfo
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- WO2014112585A1 WO2014112585A1 PCT/JP2014/050790 JP2014050790W WO2014112585A1 WO 2014112585 A1 WO2014112585 A1 WO 2014112585A1 JP 2014050790 W JP2014050790 W JP 2014050790W WO 2014112585 A1 WO2014112585 A1 WO 2014112585A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/40—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks using virtualisation of network functions or resources, e.g. SDN or NFV entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4604—LAN interconnection over a backbone network, e.g. Internet, Frame Relay
- H04L12/462—LAN interconnection over a bridge based backbone
- H04L12/4625—Single bridge functionality, e.g. connection of two networks over a single bridge
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0895—Configuration of virtualised networks or elements, e.g. virtualised network function or OpenFlow elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0896—Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities
- H04L41/0897—Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities by horizontal or vertical scaling of resources, or by migrating entities, e.g. virtual resources or entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2212/00—Encapsulation of packets
Definitions
- the present invention is based on the priority claim of Japanese Patent Application: Japanese Patent Application No. 2013-007238 (filed on January 18, 2013), the entire contents of which are incorporated herein by reference.
- the present invention relates to a communication system, a node, a control device, a communication method, and a program, and relates to a communication system, a node, a control device, a communication method, and a program that process received packets.
- a technique for logically configuring a plurality of networks isolated from each other on a physical network has been proposed.
- a logically configured network is referred to as a virtual network.
- the network A is sometimes called an underlay network (UnderlayderNetwork)
- the virtual network B is sometimes called an overlay network (Overlay Network).
- Patent Document 1 describes a technique for constructing a virtual network in a data center (DC) by using a VLAN (Virtual Local Area Network).
- DC Data Center
- VLAN Virtual Local Area Network
- Patent Document 2 discloses a technique for distributing the load of a service providing server in a computer system.
- communication processing such as packet encapsulation may be required.
- communication performance and communication quality may be inferior to using a physical network directly because of additional communication processing for constructing a virtual network.
- Patent Document 1 discloses that a VLAN is used to construct a virtual network, but there is no disclosure of a technique for suppressing communication performance and communication quality degradation due to the construction of a virtual network.
- Patent Document 2 discloses a technique for distributing the load of a service providing server, but does not disclose a technique for suppressing communication performance and communication quality degradation due to the construction of a virtual network.
- An object of the present invention is to provide a communication system, a node, a control device, a communication method, and a program capable of solving the above-described problems.
- the communication system converts at least one communication method from a plurality of communication methods to the calculation resource based on a calculation resource allocated to a user and a request condition related to a service provided to the user via the calculation resource.
- Allocating means for allocating for allocating.
- the node includes an identification means for identifying a request condition related to a service provided to the user via a computing resource allocated to the user, and at least one communication method from a plurality of communication methods based on the request condition.
- Allocating means for allocating to the computing resource.
- the control apparatus includes: an assigning unit that assigns at least one communication method from a plurality of communication methods to the computing resource based on a request condition related to a service provided to the user via a computing resource assigned to the user; Notification means for notifying a node connected to the computing resource of the assigned communication method.
- the communication method according to the present invention includes a step of identifying a request condition related to a service provided to a user via a computing resource allocated to the user, and at least one communication method is selected from a plurality of communication methods based on the request condition. Assigning to said computing resources.
- the communication method according to the present invention includes a step of allocating at least one communication method from a plurality of communication methods to the calculation resource based on a request condition relating to a service provided to the user via a calculation resource assigned to the user; And notifying the node connected to the computing resource of the assigned communication method.
- the program according to the present invention includes a process for identifying a request condition related to a service provided to the user via the calculation resource for a node connected to the calculation resource allocated to the user, and a plurality of processes based on the request condition. And a process of assigning at least one communication method to the computing resource.
- the program according to the present invention provides at least one communication method from a plurality of communication methods to a control device that controls a node based on a request condition related to a service provided to the user via a calculation resource assigned to the user. And a process of notifying the node connected to the calculation resource of the assigned communication method.
- At least one communication method is assigned from a plurality of communication methods to a calculation resource based on a request condition regarding a service provided to a user via the calculation resource.
- a communication method is assigned from a plurality of communication methods to a calculation resource based on a request condition regarding a service provided to a user via the calculation resource.
- the communication system includes an allocation unit 1, a calculation resource 2, and a network 3.
- the computing resource 2 includes a computing resource 2-1, a computing resource 2-2, and a computing resource 2-3.
- the network 3 includes a network 3-1, a network 3-2, and a network 3-3.
- the calculation resources 2-1, 2-2, and 2-3 are collectively referred to as the calculation resource 2.
- the networks 3-1, 3-2 and 3-3 are collectively referred to as the network 3.
- the communication system is, for example, a data center.
- Network 3 includes networks with different communication methods.
- the network 3-1 and the network 3-2 may be networks having different communication methods.
- the communication method may be a communication protocol such as Ethernet (registered trademark).
- a communication protocol for constructing a virtual network such as VLAN (Virtual Local Area Network), L2TP (Layer 2 Tunneling Protocol), Ethernet IP, or the like may be used. That is, the communication system can construct the network 3 by a plurality of communication methods.
- the communication system can construct a virtual network environment by the above-described plurality of communication methods, for example.
- the computing resource 2 is a resource for performing processing performed on a server or a computer, for example, and is assigned to a certain user.
- the user uses the service via the assigned computing resource 2.
- the user A is using the calculation resource 2-1
- the user B is using the calculation resource 2-2
- the user C is using the calculation resource 2-3.
- the user can use the service by executing an application corresponding to a certain service using the allocated computing resource 2.
- communication related to a service used by the user using the computing resource 2 occurs on the network 3.
- the allocating unit 1 allocates at least one communication method from a plurality of communication methods to a calculation resource according to a request condition regarding a service provided via the calculation resource 2. That is, the assigning unit 1 assigns at least one of the plurality of networks 3 having different communication methods to the calculation resource based on the request condition.
- the allocating unit 1 is provided in a node provided on the communication system.
- Fig. 2 shows an overview of the operation of the allocation unit 1.
- the communication resource 2-1 to the communication A, the calculation resource 2-2 to the communication B, and the calculation resource 2-3 to the communication C are generated.
- the assigning unit 1 assigns a communication method corresponding to the network 3-1 to the computing resource 2-1 corresponding to the user A.
- the computing resource 2-1 performs communication (communication A in FIG. 2) by a communication method corresponding to the network 3-1, according to the assignment.
- the allocation unit 1 holds information as shown in FIG. 3, for example.
- FIG. 3A shows the correspondence between the calculation resources allocated to each user and the request conditions.
- the calculation resource 2-1 assigned to the user A corresponds to the request condition “A”.
- FIG. 3B shows a communication method assigned according to the request condition.
- the communication method (1) corresponding to the network 3-1 is assigned to the request condition “A”.
- the requirement condition is, for example, SLA (Service Level Agreement), and is determined for each user.
- the user can receive a service under conditions according to the fee by paying a fee corresponding to the required condition to the operator of the communication system.
- the communication bandwidth and throughput guaranteed for the user the line speed, the average delay time in the network, the upper limit of the traffic, the average delay time in the network, the operation rate, the packet loss rate, etc. Take as an example.
- the allocating unit 1 does not have to hold information regarding the correspondence between the request condition and the communication method as illustrated in FIG. For example, the allocating unit 1 compares a performance value (for example, throughput) required in the request condition with a performance value corresponding to each of the plurality of communication methods, and the communication satisfying the request condition among the plurality of communication methods. Assign methods to computing resources. For example, the allocating unit 1 allocates a communication method that can achieve the best performance value among the communication methods satisfying the requirement to the computing resource. For example, it is assumed that the allocating unit 1 holds performance values such as a communication band and a throughput for each communication method.
- a performance value for example, throughput
- the allocation unit 1 associates the computing resource with the network.
- the allocating unit 1 assigns the communication method (1) corresponding to the network 3-1 to the computing resource 2-1 and the communication method (3) corresponding to the network 3-3 to the computing resource 2-2.
- -3 is assigned to the communication method (2) corresponding to the network 3-2.
- Each computing resource performs communication (communications A, B, and C in the figure) according to the assigned communication method.
- an appropriate communication method is assigned to a computing resource in accordance with a service request condition, so that a communication environment with performance that satisfies the user request condition is provided to the user. It becomes possible.
- an appropriate communication method is assigned to a computing resource, a virtual network environment that satisfies the user's requirements can be provided to the user even when communication is performed using a virtual network.
- the second embodiment is an embodiment in which the allocating unit 1 holds a policy regarding how to allocate the network 3.
- the assigning unit 1 determines a communication method to be assigned to the calculation resource according to the policy.
- FIG. 5 is a diagram showing a configuration example of the second embodiment. Since the basic configuration is the same as that of the first embodiment, detailed description of the components having the same reference numerals is omitted.
- FIG. 5 includes an allocation unit 1, a calculation resource 2, and a network 3.
- the computing resource 2 is, for example, a VM (Virtual Machine) executed on a certain server.
- the user uses an application using each of the calculation resources 2.
- the user A uses the application resource A using the calculation resource 2-1.
- user B uses application resource B using calculation resource 2-2 and application C using calculation resource 2-3.
- communication is generated from each computing resource 2 by use of each application.
- a requirement is defined for each user.
- the request condition is, for example, the SLA described in the first embodiment.
- FIG. 6 shows an example of the communication method of the network 3.
- the communication method of the network 3-1 is VLAN.
- the communication method of the network 3-2 is L2TP
- the communication method of the network 3-3 is Ethernet / IP.
- each of the networks 3 may adopt a communication method for constructing a virtual network on a certain physical network.
- various tunneling protocols can be used. For example, GRE (Generic Routing Encapsulation), NVGRE (Network Virtualization using GRE), IPsec (Security Architecture for Internet Protocol), or the like may be used.
- GRE Generic Routing Encapsulation
- NVGRE Network Virtualization using GRE
- IPsec Security Architecture for Internet Protocol
- the communication method of the network 3 is not limited to the above-described virtual network (overlay network), but may be a physical network (underlay network).
- the virtual network in addition to using a physical network, packet processing according to the communication method for constructing the virtual network as described above is required. For example, in a VLAN, a process for attaching a VLAN tag to a packet is required. In GRE, it is necessary to encapsulate a packet.
- the packet processing required for constructing the virtual network is not required, so there is no overhead for communication using computational resources. As described above, when a virtual network is used, the overhead due to the additional processing as described above occurs. Therefore, the communication method corresponding to the virtual network may not be able to satisfy the required condition.
- the assignment unit 1 assigns a communication method corresponding to the physical network to the computing resource when the request condition cannot be satisfied by the communication method corresponding to the virtual network.
- FIG. 7 is a diagram showing a configuration of the assignment unit 1 in the second embodiment.
- the allocation unit 1 includes an identification unit 11, a control unit 12, a policy DB (Data Base) 13, and a user DB 14. 7 is different from the assignment unit 1 (FIG. 5) in the first embodiment in that a policy DB 13 and a user DB 14 are included.
- the user DB 14 stores request conditions corresponding to the calculation resources allocated to the users and the communication addresses of the respective calculation resources 2.
- FIG. 8 shows the user DB 14 when the request condition is “bandwidth guarantee”.
- the user DB 14 stores, for example, that the communication address of the computing resource 2-1 corresponding to the user A is A, and the request condition of the user A is a bandwidth guarantee of 10 Gbps.
- the communication address is, for example, a source MAC (Media Access Control) address or a source IP address.
- the computing resource is operating on a server, for example, and the communication address is, for example, a MAC address or an IP address corresponding to the server.
- the policy DB 13 holds, for example, the policy illustrated in FIG. FIG. 9 is a policy that defines a communication method to be assigned when the request condition is “bandwidth guarantee”.
- the control unit 12 assigns a communication method that can guarantee a 10 Gbps bandwidth to a computing resource corresponding to a user whose bandwidth is guaranteed at 10 Gbps.
- Requirement conditions are not limited to one type, and multiple types of request conditions may be combined. For example, there may be a requirement that the bandwidth guarantee is 10 Gbps and the upper limit of the traffic is 500 GB per day.
- the policies set in the policy DB 13 are not limited to the above two. For example, a policy may be used in which a communication method to be assigned is determined in accordance with an average delay time in a network guaranteed for a user, an operation rate, a packet loss rate, and the like.
- the identification unit 11 identifies calculation resources and request conditions corresponding to the user (step S11). For example, the identification unit 11 searches the user DB 14 illustrated in FIG. 8 for a computing resource having a communication address corresponding to the communication address included in the received packet. Further, the identification unit 11 specifies a request condition corresponding to the searched user from the user DB 14 illustrated in FIG. For example, when the communication address “A” is included in the received packet, the identifying unit 11 identifies that the received packet is a packet from the computing resource 2-1 corresponding to the user A. In this case, the identification unit 11 specifies that the request condition corresponding to the user A guarantees a bandwidth of 10 Gbps.
- the control unit 12 refers to the policy DB 13 and determines a communication method corresponding to the request condition specified by the identification unit 11 (step S12). For example, it is assumed that the identification unit 11 identifies the request condition (“bandwidth guarantee: 10 Gbps”) corresponding to the user A from the user DB 14 illustrated in FIG. In this case, the control unit 12 refers to the policy DB 13 shown in FIG. 9 and calculates a communication method (1) that can guarantee a 10 Gbps bandwidth according to a request condition (“bandwidth guarantee: 10 Gbps”) corresponding to the user A. Decide to allocate to resource 2-1.
- control unit 12 assigns the communication method determined in step S12 to the calculation resource (step S13).
- a communication method is assigned to a computing resource
- communication is performed by an operation according to each communication method.
- the control unit 12 performs processing such as encapsulation and tagging necessary for performing communication via the virtual network. More specifically, the control unit 12 assigns a VLAN tag to the packet (communication A) from the computing resource 2-1 assigned to the network 3-1 whose communication method is VLAN, and Transfer to 3-1.
- the assigned communication method is Ethernet
- the control unit 12 adds a CRC (Frame CRC) calculated from the destination address, source address, length / type, and data fields in the FCS (Frame Check Sequence) field. Cyclic (Redundancy Check) value is set. Note that such processing when Ethernet is used is necessary not only when the assigned communication method is Ethernet, but also when a virtual network is constructed using another communication method on Ethernet.
- each application is executed using each computing resource 2.
- each computing resource 2 a plurality of applications are executed at the same time, each generating a separate communication. Also good.
- the assigning unit 1 may assign the same communication method or individual communication methods to a plurality of applications that are activated using the computing resource 2.
- control unit 12 may perform network allocation in consideration of each communication status of the network 3. For example, even if user A is assigned a communication method (1) that can guarantee a 10 Gbps bandwidth, if the network 3-1 corresponding to the communication method (1) is congested, another request is made.
- a communication method for example, a communication method corresponding to the network 3-3) corresponding to the condition (for example, “bandwidth guarantee: 5 Gbps”) may be assigned to the computing resource 2-1 corresponding to the user A.
- the allocating unit 1 can determine the communication method to be allocated to the computing resource at various timings.
- the assigning unit 1 can also change the communication method assigned to the computing resource at various timings. Below, the timing which the allocation part 1 determines a communication system, and the timing which changes a communication system are mentioned as an example, and are demonstrated.
- FIG. 11 is a flowchart showing an operation when the assignment unit 1 assigns a communication method to the calculation resource 2 when communication using the calculation resource 2 occurs.
- the allocation unit 1 determines whether communication using the calculation resource 2 has occurred (step S20). Since the operations after step S21 are the same as steps S11 to S13 in FIG. 10, the description thereof is omitted here.
- FIG. 12 is a flowchart showing an operation when a communication method is assigned to a calculation resource corresponding to a user who uses the service when a service using the calculation resource 2 is started.
- the assigning unit 1 determines whether or not a service using the calculation resource 2 has started (step S30). Since the operations after step S31 are the same as steps S11 to S13 in FIG. 10, the description thereof is omitted here.
- FIG. 13 shows an example in which the allocation unit 1 changes the allocated communication method according to the changed request condition when the user's request condition is changed.
- the user B to whom the communication method corresponding to the network 3-3 is assigned has upgraded the service, and the guaranteed communication bandwidth has increased.
- the identification unit 11 monitors whether or not the request condition of the user who uses the computing resource 2 has been changed (step S40). For example, the identification unit 11 monitors the user DB 14 at a predetermined cycle.
- the user DB 14 is updated by the operator of the communication system. For example, as illustrated in FIG. 15, when the bandwidth guarantee, which is a requirement, increases from “5 Gbps” to “10 Gbps” by the user B paying an additional fee, the user DB 14 is updated by the operator of the communication system. Is done.
- the identification unit 11 recognizes the update of the request condition in the user DB 14 by, for example, periodically monitoring the user DB 14. For example, the identification unit 11 may recognize the update of the request condition by a message notified from the computing resource 2 to the allocation unit 1.
- control unit 12 refers to the policy DB 13 and determines a communication method corresponding to the changed request condition (step S41).
- the control unit 12 assigns the determined communication method to the calculation resource (step S42).
- FIG. 16 shows the result of changing the communication method assigned to the computing resource 2-2 corresponding to the user B as described above.
- the communication method assigned to the computing resource 2-2 corresponding to the user B is changed to the communication method (communication method corresponding to the network 3-1) corresponding to the changed request condition (bandwidth guarantee: 10 Gbps). Is done.
- FIG. 17 shows an example when a request for changing the communication method assigned to the computing resource 2-2 corresponding to the user B from the communication method corresponding to the network 3-3 to another communication method is generated.
- the system administrator responds to the user B with respect to the assigning unit 1. It is conceivable to issue a request to change the communication method assigned to the computing resource 2-2.
- the user B may issue a request for changing the communication method. .
- the identification unit 11 identifies whether a change request has occurred for a certain communication (step S50).
- the change request is notified, for example, by a packet or message from the computing resource 2 to the allocation unit 1.
- an administrator or an operator who manages the system can notify the allocation unit 1 of a change request.
- step S51 determines whether to permit the change request. If the control unit 12 does not permit the change request, the operation is terminated (step S51: Yes). In determining whether or not a change request can be made, for example, the control unit 12 may decide according to some policy, or a network operator may decide. If the system administrator or operator requests a change, step S51 may be omitted.
- control unit 12 assigns the communication method requested for assignment to the user B (step S52).
- control unit 12 can change the policy of the policy DB 13 according to the content of the change request.
- the third embodiment it is possible to start network allocation or dynamically change the allocated network at various timings. As a result, the system can be operated more flexibly.
- FIG. 19 shows a configuration example of the fourth embodiment.
- the system of the fourth embodiment includes a computing resource 2, a network 3, a control device 4, and a packet processing device 5. Since the computing resource 2 and the network 3 are the same as those in the first, second, and third embodiments, detailed description thereof is omitted.
- the packet processing device 5 allocates a communication method corresponding to each network 3 to a calculation resource corresponding to each user, similarly to the allocation unit 1 in the first, second, and third embodiments. The difference between the packet processing device 5 and the assigning unit 1 is that the packet processing device 5 is controlled by the control device 4.
- the control device 4 determines a communication method to be assigned to each calculation resource with reference to the policy DB and the user DB as in the assignment unit 1 in the first, second, and third embodiments, and performs packet processing. Notify the device.
- FIG. 20 shows a configuration example of the control device 4.
- the control device 4 includes a control unit 41, a communication unit 42, a policy DB 43, and a user DB 44.
- the communication unit 42 is an interface that performs communication with the packet processing device 5.
- the control unit 41 has substantially the same function as the control unit 12 of the allocation unit 1 in the above-described embodiment. That is, the control unit 42 refers to the policy DB 43 and the user DB 44 for the calculation resource corresponding to the communication via the packet processing device 5 and determines which network is assigned the communication method.
- FIG. 21 shows an example of information stored in the policy DB 43.
- the policy DB 43 stores a communication method to be assigned according to the request condition.
- the control unit 42 can assign a communication method according to a user's request condition by referring to FIG. 21A and a user DB 44 of FIG. 22 described later.
- the policy DB 43 may store which communication method is supported for each port of each packet processing device.
- the port of each packet processing device is connected to the network 3. That is, each port of each packet processing device corresponds to the communication method of the connected network 3, and the user DB 44 illustrated in FIG. 21B manages the correspondence between each port and the communication method. .
- a port included in the packet processing device corresponding to the ID is associated with a communication method corresponding to the port.
- the control unit 42 can specify which port corresponds to the assigned communication method by referring to the information in FIG. Then, the control unit 42 can notify the packet processing device 5 which port corresponds to the communication address with reference to the user DB 44 illustrated in FIG.
- FIG. 22 shows an example of information stored in the user DB 44.
- the user DB 44 is the same as that in the first to third embodiments described above, and a detailed description thereof will be omitted.
- FIG. 23 shows a configuration example of the packet processing device 5.
- the packet processing device 5 includes a network communication unit 51, a control device communication unit 52, and a packet transfer table 53.
- the network communication unit 51 communicates with the computing resource 2 and the network 3 with reference to a packet transfer table 53 described later.
- the control device communication unit 52 stores information in the packet transfer table 53 in accordance with the notification from the control device 4.
- the control device 4 notifies the control device communication unit 52 of the packet transfer port corresponding to the communication address corresponding to the calculation resource in accordance with the determined assignment of the calculation resource and the communication method.
- the control device communication unit 52 stores the information illustrated in FIG. 24 in the packet transfer table 53, for example.
- the packet transfer table 53 stores a communication address included in a packet and a port (packet transfer port) that transfers the packet in association with each other.
- the network communication unit 51 transfers the packet received from each calculation resource from the port corresponding to the communication method assigned to each calculation resource according to the packet transfer table 53 illustrated in FIG.
- the packet transfer table 53 stores a communication address corresponding to each calculation resource and a port number corresponding to the communication method assigned to each calculation resource.
- the communication method assigned to the computing resource 2-1 having the communication address “A” corresponds to the port number “1” of the packet processing device 5.
- the network communication unit 51 transfers the received packet having the transmission source address “A” from the port “1” according to the table illustrated in FIG. By the operation of the network communication unit 51, the packet transmitted from each calculation resource is transferred to the network corresponding to the communication method assigned to each calculation resource.
- the user starts communication using the calculation resource 2 (step S61).
- a case where user A uses communication resource 2-1 and communication A occurs will be described as an example.
- the communication address of the calculation resource 2-1 is “A”.
- the network communication unit 51 of the packet processing device 5 identifies the communication address included in the received packet of communication A. In the above example, the network communication unit 51 identifies that the communication address included in the received packet of communication A is A.
- the network communication unit 51 refers to the packet transfer table 53 and determines whether or not a packet transfer port is assigned to the communication address A (step S62). For example, the network communication unit 51 determines whether a packet transfer port is assigned to the communication address A based on whether an entry corresponding to the communication address A exists in the packet transfer table 53.
- control device communication unit 52 requests the control device 4 to assign a packet transfer port to the communication address “A”. Is transmitted (step S63).
- the control unit 41 of the control device 4 When receiving the allocation request, the control unit 41 of the control device 4 refers to the policy DB 43 and the user DB 44 and sets the communication method corresponding to the network 3-1 to the computing resource 2-1 corresponding to the communication address A.
- the allocation is determined (step S64). Since the operation related to the allocation of the control unit 41 is performed in substantially the same manner as the control unit 12 of the allocation unit 1 described above, detailed description thereof is omitted.
- the control unit 41 determines to allocate a communication method corresponding to the network 3-1 to the computing resource 2-1, the packet transfer port corresponding to the communication address A is “1” for the packet processing device 5. Notify that.
- the packet processing device 5 updates the packet transfer table 53 according to the notification from the control unit 41.
- the network communication unit 51 refers to the packet transfer table 53 and transfers the packet transmitted from the computing resource 2-1 from the port 1 corresponding to the network 3-1 (step S65).
- the network communication unit 51 refers to the packet transfer table 53 and transfers the packet (No in step S62).
- the control device 4 determines the allocation of the communication method to the computing resource, and sets the corresponding communication address A and packet transfer port for the packet processing device 5. May be. In this case, for example, without performing the above-described steps S61 to S63, the control device 4 determines the assignment of the communication method to the calculation resource and sets it in the packet processing device 5. In this case, an administrator, an operator, or the like who manages the control device 4 can appropriately set the communication method assignment in the packet processing device 5 in consideration of the user status, the network status, and the like.
- the fourth embodiment is implemented using a technique called OpenFlow having a centralized control type architecture. Since the basic configuration is substantially the same as that of the fourth embodiment, the description of the same configuration or operation will be omitted as appropriate.
- OpenFlow recognizes communication as an end-to-end flow and performs path control, failure recovery, load balancing, etc. in units of flows.
- a flow is a series of communication packet groups having predetermined attributes, for example.
- FIG. 26 shows a configuration example of a communication system according to the fifth embodiment.
- the control device 4 operates as an OpenFlow controller 400 (hereinafter, OFC 400), and the packet processing device 5 operates as an OpenFlow switch 500 (hereinafter, OFS 500).
- OFC 400 is an information processing apparatus that controls the OFS 500. It is assumed that communication belonging to the flow A is performed from the computing resource 2-1 used by the user A. Similarly, communication belonging to the flow B is performed from the calculation resource 2-2 used by the user B, and communication belonging to the flow C is performed from the calculation resource 2-3 used by the user C.
- FIG. 27 shows a configuration example of the OFC 400.
- the OFC 400 includes a control unit 401, a communication unit 402, a policy DB 403, and a user DB 404. Since the above configuration is substantially the same as that of the control device 4 in the fourth embodiment, a detailed description thereof is omitted.
- FIG. 28 shows a configuration example of the OFS 500.
- the OFS 500 includes a network communication unit 501, an OFC communication unit 502, and a flow table 503.
- the network communication unit 501 is connected to the computing resource 2 and the network 3 and performs processing related to the received packet with reference to a flow table 503 described later.
- the OFC communication unit 502 stores information in the flow table 503 according to the notification from the OFC 400.
- the OFC 400 notifies the OFC communication unit 502 of information illustrated in FIG. 29 according to the determined allocation of the calculation resource and the communication method. Note that FIG. 29 will be described in detail later.
- the OFC communication unit 502 stores the information illustrated in FIG. 29 in the flow table 503, for example.
- FIG. 29 shows a configuration example of each entry (flow entry) in the flow table 503.
- the flow entry includes a field (Match Fields) for collating with information (for example, destination IP address, VLAN ID, etc.) of the packet received by the OFS 500, and a field (Action) for a packet matching the matching rule (Action) Instruction).
- the flow entry may include a field (Priority) indicating the priority of the flow entry and a field (Counters) indicating statistical information for each packet flow.
- the flow entry may have a field (Timeouts) indicating the expiration date (time) of the flow entry and the time until expiration, and a field (Cookie) arbitrarily set by the OFC 400.
- one flow entry corresponds to one flow, but a plurality of flows are handled by one flow entry by setting a wild card in a part of the match field (for example, destination IP address). It is also possible.
- this flow table 503 will be described more specifically.
- an entry whose match field is “A” in the flow table 503 corresponds to a flow transmitted from the user A (that is, the calculation resource 2-1).
- the match field is described as “A” for simplification, but this flow is, for example, a source IP address, a destination IP address, a source MAC address, a destination MAC address, a VLAN ID, and the like.
- the match field “A” represents that the transmission source address of the packet is a communication address of a computing resource corresponding to the user A.
- an entry whose match field is “B” corresponds to a flow from user B
- an entry whose match field is “C” corresponds to a flow from user C.
- a processing method of “transfer from port 1” is described in Instructions of the flow from the user A. This indicates the processing content that the OFS 500 transfers the packet with the match field “A” from the port 1. For example, when the communication method assigned to the computing resource corresponding to user A is assumed to correspond to port 1, OFS 500 is assigned to the computing resource corresponding to user A by the processing method "transfer from port 1". Packets can be transferred to networks with different communication methods.
- Instructions include other processing methods such as “transfer the received packet from a predetermined port”, “discard the received packet”, “one of the headers of the received packet”. The data is rewritten and transferred from a predetermined port ”.
- the user uses the calculation resource 2 to start communication (step S71).
- the user A starts communication using the flow A using the calculation resource 2-1 will be described as an example.
- the network communication unit 501 of the OFS 500 refers to the flow table 503 for the received flow A packet, and searches for a flow entry that matches the header information of the received packet (step S72). For example, if the match field corresponding to the flow A is “A”, the network communication unit 501 searches the flow table 503 for an entry having the match field A.
- step S72 if there is no flow entry matching the flow A, the OFC communication unit 502 inquires of the OFC 400 about processing to be performed on the flow A (step S73).
- the control unit 401 of the OFC 400 Upon receiving this inquiry, the control unit 401 of the OFC 400 refers to the policy DB 403 and the user DB 404 and decides to assign a communication method corresponding to the network 3-1 to the calculation resource of the user A (flow A). (Step S74). Since the operation related to the assignment of the control unit 401 is performed in substantially the same manner as the control unit 41 of the fourth embodiment, detailed description thereof is omitted. Next, the control unit 401 sets a flow entry corresponding to the determined communication method assignment. That is, the control unit 401 performs setting for the OFS 500 to transfer the packet of the flow A from the port corresponding to the network 3-1. In this way, the OFC 400 can set the OFS 500 to allocate the network 3-1 to the user A.
- the OFS 500 updates the flow table 503 according to the setting from the OFC 400.
- the processing method that specifies that the packet is transferred from the port 1 corresponding to the network 3-1 is set in the flow entry whose match field corresponding to the flow A is A. Is done.
- the OFS 500 transfers the received packet from the port 1 in accordance with the updated flow table 503 (step S75).
- step S72 if a flow entry for flow A is found, OFS 500 transfers the received packet from port 1 without inquiring of the processing content from OFC 400 (step S72: No).
- the OFC 400 may determine the allocation of the communication method to the computing resource and set the corresponding flow entry for the OFS 500.
- the OFC 400 determines the assignment of the communication method to the computing resource, and sets the flow entry corresponding to the determined assignment of the communication method in the OFS 500. May be.
- an administrator, an operator, or the like who manages the OFC 400 can appropriately set a flow entry corresponding to the network assignment in the OFS 500 in consideration of the user status, the network status, and the like.
- OpenFlow As described above, the application example using OpenFlow has been described. However, any system other than OpenFlow can be applied to a system having a centralized control architecture.
- the system of the sixth embodiment includes a control device 4, a virtual switch (vSwitch) 101, a server 100, a physical switch 110, and a virtual machine (VM) 102, as shown in FIG.
- vSwitch virtual switch
- server 100 a physical switch
- VM virtual machine
- the virtual switch 101 is a network switch configured by software that operates on the server 100.
- the virtual switch 101 has a function corresponding to the packet processing device 5 of the fourth embodiment or the OFS 500 of the fifth embodiment. That is, the virtual switch 101 processes the packet based on the control by the control device 4.
- the virtual switch 101 is located at, for example, an end point (edge) of a network constituted by the physical switches 110.
- a virtual machine (VM) 102 which is a computer configured by software, operates.
- the VM 102 communicates with other VMs 102 via the virtual switch 101.
- the VM 102 has a function corresponding to the calculation resource 2 of the other embodiment.
- the VM 102 communicates with other VMs 102 via a network via the physical switch 110 (underlay network) or a virtual network (overlay network) constructed on the physical switch 110.
- the network (underlay network) is constructed based on a communication method such as IPv4 or IPv6 as described above.
- the virtual network is constructed based on a communication method such as VLAN, L2TP, Ethernet / IP, GRE, NVGRE, and IPsec as described above. These networks correspond to the network 3 of the other embodiments.
- the control device 4 has a function corresponding to the control device 4 of the fourth embodiment or the OFC 400 of the fifth embodiment. That is, the control device 4 determines which communication method is assigned to the communication from the VM 102.
- the virtual switch 101 processes the packet in accordance with the processing rule notified from the control device 4.
- the server 100 is located, for example, at the end (edge) of the network constituted by the physical switches 110.
- the control device 4 controls the operation of the virtual switch 101 existing at the edge of the network.
- FIG. 32 An example of communication operation between the VMs 102 will be described with reference to FIG. In the example of FIG. 32, an example is illustrated in which the VM 102A and the VM 102B communicate with the VM 102C and the VM 102D via the virtual switch 101A.
- the virtual switch 101A has a port 1011A, a port 1011B, and a port 1011C.
- the virtual switch 101B has a port 1021A, a port 1021B, and a port 1021C.
- each port is connected to a network of a different communication method.
- the port 1011A is connected to the network 121.
- the port 1011B is connected to the network 122.
- the port 1011C is connected to the network 123.
- the network 121, the network 122, and the network 123 may be constructed based on different communication methods.
- the communication method is assigned to the VM 102
- communication is performed by an operation according to each communication method.
- the virtual switch 101A adds a VLAN tag to the packet from the VM 102A assigned to the network 121 and transfers the packet to the network 121.
- the control device 4 notifies the virtual switch 101A of a processing rule that stipulates that a VLAN tag corresponding to the network 121 is added to the packet from the VM 102A. For example, when the virtual switch 101A receives a packet from the VM 102A, the virtual switch 101A attaches a VLAN tag corresponding to the network 121 to the packet and transfers the packet in accordance with an instruction from the control device 4.
- the load on the control device 4 can be suppressed by the configuration in which the control device 4 controls only the virtual switch 101A. Further, a centralized control type network by the control device 4 can be introduced without replacing the existing equipment (for example, the physical switch 110) of the communication system.
- a communication system comprising: allocation means for allocating at least one communication method from a plurality of communication methods to the calculation resource based on a request condition relating to a service provided to the user via the calculation resource.
- the network corresponding to the plurality of communication methods includes a first network and a second network that requires packet processing according to the communication method in addition to the processing required for communication using the first network,
- the communication system according to claim 1 or 2 wherein the allocating unit allocates a communication method corresponding to the first network to the computing resource when a communication method corresponding to the second network does not satisfy the requirement.
- the network corresponding to the plurality of communication methods includes a physical network and a virtual network constructed on the physical network,
- the allocating unit can allocate a communication method corresponding to the virtual network to the computing resource when a communication method corresponding to the physical network does not satisfy the requirement.
- the allocating unit allocates at least one communication method from a plurality of communication methods to the computing resource according to the request condition and a communication status of a network corresponding to the plurality of communication methods.
- the communication system according to one.
- the communication system is: Determining a communication method to be allocated to the computing resource, and comprising a control device for notifying the determined communication method to the allocating means, The communication system according to any one of Embodiments 1 to 9, wherein the assigning means assigns at least one communication method from the plurality of communication methods to the computing resource in accordance with the notification.
- a node comprising: allocating means for allocating at least one communication method from a plurality of communication methods to the calculation resource based on a request condition relating to a service provided to the user via a calculation resource assigned to the user
- the network corresponding to the plurality of communication methods includes a first network and a second network that requires packet processing according to the communication method in addition to the processing required for communication using the first network,
- the network corresponding to the plurality of communication methods includes a physical network and a virtual network constructed on the physical network,
- the assignment unit can assign a communication method corresponding to the physical network to the computing resource when a communication method corresponding to the virtual network does not satisfy the required condition.
- the listed node The listed node.
- the allocation unit allocates at least one communication scheme from a plurality of communication schemes to the computing resource according to the request condition and a communication status of a network corresponding to the plurality of communication schemes. Node described in 1.
- Allocating means for allocating at least one communication scheme from a plurality of communication schemes to the computing resource based on a request condition relating to a service provided to the user via a computing resource allocated to the user;
- a notification means for notifying the node connected to the computing resource of the assigned communication method;
- Control device including.
- the network corresponding to the plurality of communication methods includes a first network and a second network that requires packet processing according to the communication method in addition to the processing required for communication using the first network,
- the network corresponding to the plurality of communication methods includes a physical network and a virtual network constructed on the physical network,
- the allocating unit can allocate a communication method corresponding to the physical network to the computing resource when a communication method corresponding to the virtual network does not satisfy the required condition.
- the allocation means allocates at least one communication scheme from a plurality of communication schemes to the computing resource according to the request condition and the communication status of the network corresponding to the plurality of communication schemes.
- the control device according to any one of forms 20 to 23.
- a communication method comprising the step of allocating at least one communication method from a plurality of communication methods to the calculation resource based on a request condition relating to a service provided to the user via a calculation resource assigned to the user.
- Form 30 Allocating at least one communication scheme from a plurality of communication schemes to the computing resource based on a requirement regarding a service provided to the user via a computing resource allocated to the user; Informing the node connected to the computing resource of the assigned communication method; Including a communication method.
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Abstract
Description
本発明は、日本国特許出願:特願2013-007238(2013年1月18日出願)の優先権主張に基づくものであり、同出願の全記載内容は引用をもって本書に組み込み記載されているものとする。
本発明は、通信システム、ノード、制御装置、通信方法およびプログラムに関し、受信するパケットの処理を行う通信システム、ノード、制御装置、通信方法およびプログラムに関する。
(概要)
本発明の第1の実施形態の概要について説明する。第1の実施形態では、計算資源を介してユーザに提供されるサービスに関する要求条件に基づいて、計算資源に対して、複数の通信方式から少なくとも1つの通信方式を割り当てる。このような処理により、サービスに関する要求条件に応じた通信方式で通信を行うことが可能となる。
以下、本発明の第1の実施形態について説明する。第1の実施形態による通信システムの構成は、例えば、図1に示す通りである。図1によれば、通信システムは、割り当て部1、計算資源2、ネットワーク3を含む。図1の例では、計算資源2は、計算資源2-1、計算資源2-2、計算資源2-3を含む。また、ネットワーク3は、ネットワーク3-1、ネットワーク3-2、ネットワーク3-3を含む。以降、個別の計算資源を区別しない場合には、計算資源2-1、2-2、2-3を計算資源2と総称する。同様に、個別のネットワークを区別しない場合には、ネットワーク3-1、3-2、3-3をネットワーク3と総称する。また、通信システムは、例えば、データセンタ(Data Center)である。
以下、本発明の第2の実施形態について、図面を用いて説明する。第2の実施形態は、割り当て部1が、ネットワーク3の割り当て方に関するポリシを保持している場合の実施形態である。割り当て部1は、ポリシに従って、計算資源に割り当てる通信方式を決定する。
次に、本発明の第3の実施形態について、図面を参照して説明する。第3の実施形態による割り当て部1は、様々なタイミングで、計算資源に対して割り当てる通信方式を決定することが可能である。また、割り当て部1は、様々なタイミングで、計算資源に対して割り当てる通信方式を変更することも可能である。以下では、割り当て部1が通信方式を決定するタイミングと、通信方式を変更するタイミングについて例を挙げて説明する。
図11は、計算資源2を利用した通信が発生した場合に、その計算資源2に対して、割り当て部1が通信方式の割り当てを行う際の動作を示したフローチャートである。この場合、割り当て部1は、計算資源2を利用した通信が発生したかどうかを判定する(ステップS20)。なお、ステップS21以降の動作は、図10のステップS11からS13と同様であるので、ここでは説明を省略する。
次に、計算資源に割り当てられている通信方式を変更する場合の例について、説明する。
次に、システム管理者やユーザからの通信方式の変更要求に応じて、割り当て部1が、計算資源に対する通信方式の割り当てを変更する例について、説明する。
第4の実施形態では、第1、第2、第3の実施形態を集中制御型のシステムに適用する場合について説明する。
以上説明したように、第4の実施形態では、パケット処理装置5を制御装置4によって制御する場合の例を示した。集中制御型のアーキテクチャを採用することで、パケット処理装置5が多数ある場合であっても、制御装置4を用いることで、柔軟な制御を行うことが可能となる。
次に、本発明の第5の実施形態について説明する。第5の実施形態は、第4の実施形態を、集中制御型のアーキテクチャを有するオープンフロー(OpenFlow)という技術を用いて実施する形態である。なお、基本的な構成は、第4の実施形態とほぼ同様であるため、同様の構成または動作については、適宜説明を省略する。
以上説明したように、第5の実施形態では、第4の実施形態にOpenFlowを適用して、OFS500をOFC400によって制御する場合の例を示した。第4の実施形態と同様に、集中制御型のアーキテクチャを採用することで、OFS500が多数ある場合であっても、OFC400を用いることで、柔軟な制御を行うことが可能となる。
次に、図31および図32を用いて、第6の実施形態について説明する。
第6の実施形態のように、制御装置4が仮想スイッチ101Aのみを制御する構成により、制御装置4の負荷を抑止できる。また、通信システムの既存設備(例えば、物理スイッチ110)を置き換えることなく、制御装置4による集中制御型のネットワークを導入できる。
ユーザに割り当てられる計算資源と、
前記計算資源を介して前記ユーザに提供されるサービスに関する要求条件に基づいて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる割当手段と
を含む通信システム。
前記割当手段は、前記複数の通信方式のうち、前記要求条件を満たす通信方式を前記計算資源に割り当てる
形態1に記載の通信システム。
前記複数の通信方式に対応するネットワークは、第1のネットワークと、第1のネットワークを用いた通信に要する処理に加えて、通信方式に応じたパケット処理を要する第2のネットワークを含み、
前記割当手段は、前記第2のネットワークに対応する通信方式が前記要求条件に満たない場合、前記第1のネットワークに対応する通信方式を前記計算資源に割り当てる
形態1または2に記載の通信システム。
前記複数の通信方式に対応するネットワークは、物理ネットワークと、前記物理ネットワーク上に構築される仮想ネットワークと、を含み、
前記割当手段は、前記物理ネットワークに対応する通信方式が前記要求条件に満たない場合、前記仮想ネットワークに対応する通信方式を前記計算資源に割り当てることが可能である
形態1乃至3のいずれか一に記載の通信システム。
前記割当手段は、前記要求条件と、前記複数の通信方式に対応するネットワークの通信状況とに応じて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる
形態1乃至4のいずれか一に記載の通信システム。
前記割当手段は、前記計算資源に関する通信の発生に応じて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる
形態1乃至5のいずれか一に記載の通信システム。
前記割当手段は、前記サービスの開始に応じて、前記複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる
形態1乃至6のいずれか一に記載の通信システム。
前記割当手段は、前記ユーザに対応する前記要求条件の変更に応じて、通信方式の割当てを変更する
形態1乃至7のいずれか一に記載の通信システム。
前記割当手段は、前記通信方式の変更要求に応じて、通信方式の割当てを変更する
形態1乃至8のいずれか一に記載の通信システム。
前記通信システムは、
前記計算資源に割り当てる通信方式を決定し、決定した通信方式を前記割当手段に通知する制御装置を備え、
前記割当手段は、前記通知に従って、前記複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる
形態1乃至9のいずれか一に記載の通信システム。
ユーザに割り当てられる計算資源を介して前記ユーザに提供されるサービスに関する要求条件に基づいて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる割当手段
を含むノード。
前記割当手段は、前記複数の通信方式のうち、前記要求条件を満たす通信方式を前記計算資源に割り当てる
形態11に記載のノード。
前記複数の通信方式に対応するネットワークは、第1のネットワークと、第1のネットワークを用いた通信に要する処理に加えて、通信方式に応じたパケット処理を要する第2のネットワークを含み、
前記割当手段は、前記第2のネットワークに対応する通信方式が前記要求条件に満たない場合、前記第1のネットワークに対応する通信方式を前記計算資源に割り当てる
形態11または12に記載のノード。
前記複数の通信方式に対応するネットワークは、物理ネットワークと、前記物理ネットワーク上に構築される仮想ネットワークと、を含み、
前記割当手段は、前記仮想ネットワークに対応する通信方式が前記要求条件に満たない場合、前記物理ネットワークに対応する通信方式を前記計算資源に割り当てることが可能である
形態11乃至13のいずれか一に記載のノード。
前記割当手段は、前記要求条件と、前記複数の通信方式に対応するネットワークの通信状況とに応じて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる
形態11乃至14のいずれか一に記載のノード。
前記割当手段は、前記計算資源に関する通信の発生に応じて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる
形態11乃至15のいずれか一に記載のノード。
前記割当手段は、前記サービスの開始に応じて、前記複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる
形態11乃至16のいずれか一に記載のノード。
前記割当手段は、前記ユーザに対応する前記要求条件の変更に応じて、通信方式の割当てを変更する
形態11乃至17のいずれか一に記載のノード。
前記割当手段は、前記通信方式の変更要求に応じて、通信方式の割当てを変更する
形態11乃至18のいずれか一に記載のノード。
ユーザに割り当てられる計算資源を介して前記ユーザに提供されるサービスに関する要求条件に基づいて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる割当手段と、
前記計算資源に接続するノードに対して、前記割り当てた通信方式を通知する通知手段と、
を含む制御装置。
前記割当手段は、前記複数の通信方式のうち、前記要求条件を満たす通信方式を前記計算資源に割り当てる
形態20に記載の制御装置。
前記複数の通信方式に対応するネットワークは、第1のネットワークと、第1のネットワークを用いた通信に要する処理に加えて、通信方式に応じたパケット処理を要する第2のネットワークを含み、
前記割当手段は、前記第2のネットワークに対応する通信方式が前記要求条件に満たない場合、前記第1のネットワークに対応する通信方式を前記計算資源に割り当てる
形態20または21に記載の制御装置。
前記複数の通信方式に対応するネットワークは、物理ネットワークと、前記物理ネットワーク上に構築される仮想ネットワークと、を含み、
前記割当手段は、前記仮想ネットワークに対応する通信方式が前記要求条件に満たない場合、前記物理ネットワークに対応する通信方式を前記計算資源に割り当てることが可能である
形態20乃至22のいずれか一に記載の制御装置。
通信状況も考慮したNW割り当て
前記割当手段は、前記要求条件と、前記複数の通信方式に対応するネットワークの通信状況とに応じて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる
形態20乃至23のいずれか一に記載の制御装置。
前記割当手段は、前記計算資源に関する通信の発生に応じて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる
形態20乃至24のいずれか一に記載の制御装置。
前記割当手段は、前記サービスの開始に応じて、前記複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる
形態20乃至25のいずれか一に記載の制御装置。
前記割当手段は、前記ユーザに対応する前記要求条件の変更に応じて、通信方式の割当てを変更する
形態20乃至26のいずれか一に記載の制御装置。
前記割当手段は、前記通信方式の変更要求に応じて、通信方式の割当てを変更する
形態20乃至27のいずれか一に記載の制御装置。
ユーザに割り当てられる計算資源を介して前記ユーザに提供されるサービスに関する要求条件に基づいて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てるステップ
を含む通信方法。
ユーザに割り当てられる計算資源を介して前記ユーザに提供されるサービスに関する要求条件に基づいて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てるステップと、
前記計算資源に接続するノードに対して、前記割り当てた通信方式を通知するステップと、
を含む通信方法。
ユーザに割り当てられる計算資源に接続するノードに対して、
前記計算資源を介して前記ユーザに提供されるサービスに関する要求条件に基づいて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる処理
を実行させるプログラム。
ノードの制御を行う制御装置に対して、
ユーザに割り当てられる計算資源を介して前記ユーザに提供されるサービスに関する要求条件に基づいて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる処理と、
前記計算資源に接続するノードに対して、前記割り当てた通信方式を通知する処理と、
を実行させるプログラム。
2 計算資源
3 ネットワーク
4 制御装置
5 パケット処理装置
11 識別部
12、41、401 制御部
13、43、403 ポリシDB
14、44、404 ユーザDB
42、54、402 通信部
51、501 ネットワーク通信部
52 制御装置通信部
53 パケット転送テーブル
100 サーバ
101 仮想スイッチ
102 VM
110 物理スイッチ
121、122 ネットワーク
400 OFC
500 OFS
502 OFC通信部
503 フローテーブル
1011、1021 ポート
Claims (33)
- ユーザに割り当てられる計算資源と、
前記計算資源を介して前記ユーザに提供されるサービスに関する要求条件に基づいて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる割当手段と、
を備える、通信システム。 - 前記割当手段は、前記複数の通信方式のうちの前記要求条件を満たす通信方式を前記計算資源に割り当てる、
請求項1に記載の通信システム。 - 前記複数の通信方式に対応するネットワークは、第1のネットワークと、前記第1のネットワークを用いた通信に要する処理に加えて、通信方式に応じたパケット処理を要する第2のネットワークを含み、
前記割当手段は、前記第2のネットワークに対応する通信方式が前記要求条件を満たさない場合、前記第1のネットワークに対応する通信方式を前記計算資源に割り当てる、
請求項1または2に記載の通信システム。 - 前記複数の通信方式に対応するネットワークは、物理ネットワークと、前記物理ネットワーク上に構築される仮想ネットワークと、を含み、
前記割当手段は、前記物理ネットワークに対応する通信方式が前記要求条件を満たさない場合、前記仮想ネットワークに対応する通信方式を前記計算資源に割り当てる、
請求項1乃至3のいずれか1項に記載の通信システム。 - 前記割当手段は、前記要求条件と、前記複数の通信方式に対応するネットワークの通信状況とに応じて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる、
請求項1乃至4のいずれか1項に記載の通信システム。 - 前記割当手段は、前記計算資源に関する通信の発生に応じて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる、
請求項1乃至5のいずれか1項に記載の通信システム。 - 前記割当手段は、前記サービスの開始に応じて、前記複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる、
請求項1乃至6のいずれか1項に記載の通信システム。 - 前記割当手段は、前記ユーザに対応する前記要求条件の変更に応じて、通信方式の割当てを変更する、
請求項1乃至7のいずれか1項に記載の通信システム。 - 前記割当手段は、前記通信方式の変更要求に応じて、通信方式の割当てを変更する、
請求項1乃至8のいずれか1項に記載の通信システム。 - 前記通信システムは、
前記計算資源に割り当てる通信方式を決定し、決定した通信方式を前記割当手段に通知する制御装置を備え、
前記割当手段は、前記通知に従って、前記複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる、
請求項1乃至9のいずれか1項に記載の通信システム。 - ユーザに割り当てられる計算資源を介して前記ユーザに提供されるサービスに関する要求条件を識別する識別手段と、
前記要求条件に基づいて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる制御手段と、
を備える、ノード。 - 前記制御手段は、前記複数の通信方式のうちの前記要求条件を満たす通信方式を前記計算資源に割り当てる、
請求項11に記載のノード。 - 前記複数の通信方式に対応するネットワークは、第1のネットワークと、前記第1のネットワークを用いた通信に要する処理に加えて、通信方式に応じたパケット処理を要する第2のネットワークを含み、
前記制御手段は、前記第2のネットワークに対応する通信方式が前記要求条件を満たさない場合、前記第1のネットワークに対応する通信方式を前記計算資源に割り当てる、
請求項11または12に記載のノード。 - 前記複数の通信方式に対応するネットワークは、物理ネットワークと、前記物理ネットワーク上に構築される仮想ネットワークと、を含み、
前記制御手段は、前記仮想ネットワークに対応する通信方式が前記要求条件を満たさない場合、前記物理ネットワークに対応する通信方式を前記計算資源に割り当てる、
請求項11乃至13のいずれか1項に記載のノード。 - 前記制御手段は、前記要求条件と、前記複数の通信方式に対応するネットワークの通信状況とに応じて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる、
請求項11乃至14のいずれか1項に記載のノード。 - 前記制御手段は、前記計算資源に関する通信の発生に応じて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる、
請求項11乃至15のいずれか1項に記載のノード。 - 前記制御手段は、前記サービスの開始に応じて、前記複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる、
請求項11乃至16のいずれか1項に記載のノード。 - 前記制御手段は、前記ユーザに対応する前記要求条件の変更に応じて、通信方式の割当てを変更する、
請求項11乃至17のいずれか1項に記載のノード。 - 前記制御手段は、前記通信方式の変更要求に応じて、通信方式の割当てを変更する、
請求項11乃至18のいずれか1項に記載のノード。 - ユーザに割り当てられる計算資源を介して前記ユーザに提供されるサービスに関する要求条件に基づいて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる割当手段と、
前記計算資源に接続するノードに対して、前記割り当てた通信方式を通知する通知手段と、
を備える、制御装置。 - 前記割当手段は、前記複数の通信方式のうちの前記要求条件を満たす通信方式を前記計算資源に割り当てる、
請求項20に記載の制御装置。 - 前記複数の通信方式に対応するネットワークは、第1のネットワークと、前記第1のネットワークを用いた通信に要する処理に加えて、通信方式に応じたパケット処理を要する第2のネットワークを含み、
前記割当手段は、前記第2のネットワークに対応する通信方式が前記要求条件を満たさない場合、前記第1のネットワークに対応する通信方式を前記計算資源に割り当てる、
請求項20または21に記載の制御装置。 - 前記複数の通信方式に対応するネットワークは、物理ネットワークと、前記物理ネットワーク上に構築される仮想ネットワークと、を含み、
前記割当手段は、前記仮想ネットワークに対応する通信方式が前記要求条件を満たさない場合、前記物理ネットワークに対応する通信方式を前記計算資源に割り当てる、
請求項20乃至22のいずれか1項に記載の制御装置。 -
前記割当手段は、前記要求条件と、前記複数の通信方式に対応するネットワークの通信状況とに応じて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる、
請求項20乃至23のいずれか1項に記載の制御装置。 - 前記割当手段は、前記計算資源に関する通信の発生に応じて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる、
請求項20乃至24のいずれか1項に記載の制御装置。 - 前記割当手段は、前記サービスの開始に応じて、前記複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる、
請求項20乃至25のいずれか1項に記載の制御装置。 - 前記割当手段は、前記ユーザに対応する前記要求条件の変更に応じて、通信方式の割当てを変更する、
請求項20乃至26のいずれか1項に記載の制御装置。 - 前記割当手段は、前記通信方式の変更要求に応じて、通信方式の割当てを変更する、
請求項20乃至27のいずれか1項に記載の制御装置。 - ユーザに割り当てられる計算資源を介して前記ユーザに提供されるサービスに関する要求条件を識別するステップと、
前記要求条件に基づいて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てるステップと、
を含む、通信方法。 - ユーザに割り当てられる計算資源を介して前記ユーザに提供されるサービスに関する要求条件に基づいて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てるステップと、
前記計算資源に接続するノードに対して、前記割り当てた通信方式を通知するステップと、
を含む、通信方法。 - ユーザに割り当てられる計算資源に接続するノードに対して、
前記計算資源を介して前記ユーザに提供されるサービスに関する要求条件を識別する処理と、
前記要求条件に基づいて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる処理と、
を実行させる、プログラム。 - ノードの制御を行う制御装置に対して、
ユーザに割り当てられる計算資源を介して前記ユーザに提供されるサービスに関する要求条件に基づいて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる処理と、
前記計算資源に接続するノードに対して、前記割り当てた通信方式を通知する処理と、
を実行させる、プログラム。 - ユーザに割り当てられる計算資源に接続するノードと、
前記ノードによる通信を制御する制御装置と、を備え、
前記制御装置は、前記計算資源を介して前記ユーザに提供されるサービスに関する要求条件に基づいて、複数の通信方式から少なくとも1つの通信方式を前記計算資源に割り当てる割当手段と、
前記割り当てた通信方式を前記ノードに通知する通知手段と、
を有する、通信システム。
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WO2023181422A1 (ja) * | 2022-03-25 | 2023-09-28 | 株式会社Nttドコモ | ネットワークノード及び通信方法 |
WO2023181423A1 (ja) * | 2022-03-25 | 2023-09-28 | 株式会社Nttドコモ | ネットワークノード及び通信方法 |
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JPH06276254A (ja) * | 1993-03-17 | 1994-09-30 | Nippon Telegr & Teleph Corp <Ntt> | 通信制御装置 |
JP2006054841A (ja) * | 2004-07-14 | 2006-02-23 | Nec Corp | 通信端末装置及びそれに用いるネットワーク選択方法並びにそのプログラム |
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