WO2012033117A1 - ネットワークシステム、及びネットワーク管理方法 - Google Patents
ネットワークシステム、及びネットワーク管理方法 Download PDFInfo
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- WO2012033117A1 WO2012033117A1 PCT/JP2011/070333 JP2011070333W WO2012033117A1 WO 2012033117 A1 WO2012033117 A1 WO 2012033117A1 JP 2011070333 W JP2011070333 W JP 2011070333W WO 2012033117 A1 WO2012033117 A1 WO 2012033117A1
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- H—ELECTRICITY
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Definitions
- the present invention relates to a network system, and more particularly to a network system using a CU (C: control plane / U: user plane) separation type network.
- a method of controlling switches, terminals, etc. (user plane) from an external controller (control plane) is called a CU (C: control plane / U: user plane) separated architecture.
- a network having a configuration based on such a CU separation type architecture is referred to as a CU separation type network.
- the CU separation type network there is an open flow network using an open flow technology that controls a switch from a controller and performs network path control.
- a controller such as OFC (OpenFlow Controller) controls the behavior of a switch by operating a flow table of the switch such as OFS (OpenFlow Switch).
- the controller and the switch are connected by a secure channel (Secure Channel) for the controller to control the switch using a control message conforming to the OpenFlow protocol.
- the switches in the OpenFlow network are edge switches and core switches that form the OpenFlow network and are under the control of the controller.
- a series of packet flows from the reception of a packet at the input side edge switch to the transmission at the output side edge switch in the OpenFlow network is called a flow.
- the flow table is a table in which flow entries (Flow entries) defining predetermined processing contents (actions) to be performed on packets (communication data) that match predetermined matching conditions (rules) are registered.
- Flow entries flow entries defining predetermined processing contents (actions) to be performed on packets (communication data) that match predetermined matching conditions (rules) are registered.
- the rule of the flow entry is one of a destination address (Destination Address), a source address (Source Address), a destination port (Destination Port), a source port (Source Port) included in the header area of each protocol layer of the packet, or Defined and distinguishable by various combinations using all.
- the above address includes a MAC address (Media Access Control Address) and an IP address (Internet Protocol Address).
- Information on the ingress port (Ingress Port) can also be used as a rule for the flow entry.
- the action of the flow entry indicates operations such as “output to a specific port”, “discard”, and “rewrite header”. For example, if the identification information (output port number, etc.) of the output port is indicated in the action of the flow entry, the switch outputs a packet to the corresponding port, and if the identification information of the output port is not indicated , Discard the packet. Alternatively, if the header information is indicated in the action of the flow entry, the switch rewrites the header of the packet based on the header information.
- a switch in the OpenFlow network executes a flow entry action on a packet group (packet series) that conforms to the rules of the flow entry.
- VM virtual machine
- ARP Address Resolution Protocol
- An object of the present invention is to manage identification information of a virtual machine that operates on a server under a switch and identification information of a server that operates the virtual machine on the controller side, and in parallel with the generation and migration operations of the virtual machine.
- the network system forms a network with a management device that manages a network, a controller that holds server information according to settings from the management device, and controls packets as a flow according to control from the controller.
- the controller calculates a communication path with the server based on the set server information, and sets a flow entry related to the packet addressed to the server in the switch.
- the controller calculates a communication path to the server based on the storage unit that holds the server information set from the management device that manages the network and the set server information, and is sent to the server. And a processing unit that sets a flow entry for the packet to a switch that forms a network and that forwards a received packet according to the set flow entry.
- a computer functioning as a controller holds server information set by a management device that manages a network. Also, based on the information of the set server, the communication path to the server is calculated, and the flow entry for the packet addressed to the server is a switch that forms the network, and the received packet is sent according to the set flow entry. Set to the switch to transfer.
- the program according to the present invention stores a server information set from a management device that manages a network, calculates a communication path with the server based on the set server information, This is a program for causing a computer to execute a step of setting a flow entry relating to a packet in a switch that forms a network and that forwards a received packet according to the set flow entry.
- the program according to the present invention can be stored in a storage device or a storage medium.
- the present invention is directed to a CU separation type network.
- an OpenFlow network that is one of CU separation type networks will be described as an example. However, actually, it is not limited to the OpenFlow network.
- a network system includes a management device (Management system) 10, a controller (OFC: OpenFlow Controller) 20, a switch (Switch) 30, a server (Server) 40, and a virtual machine. (VM: Virtual Machine) 50 and a router (Router) 60 are included.
- Each of the management device 10, the controller 20, the switch 30, the server 40, the virtual machine 50, and the router 60 may be plural. That is, it is assumed that at least one unit exists.
- the management device 10 manages nodes and services in the CU separation type network.
- the management device 10 manages switches, routers, and servers.
- the management device 10 manages the network by hardware and software for realizing NMS (Network Management System) and EMS (Element Management System).
- the management apparatus 10 sets the virtual MAC address and virtual IP address of the virtual machine and the physical MAC address of the server that operates the virtual machine in the controller 20 as virtual machine information (VM Information).
- VM Information virtual machine information
- the virtual MAC address, virtual IP address, physical MAC address, and the like are merely examples of location information on the network. Actually, the information is not limited to the MAC address or the IP address, and may be information for specifying the virtual machine or the server.
- the controller 20 controls the CU separation type network.
- the controller 20 performs path control of the switch 30 according to the setting from the management device 10.
- the controller 20 is a controller that supports the open flow technology, and sets a flow entry related to a packet addressed to the server in the switch 30 based on the physical MAC address of the server notified from the switch 30.
- the controller 20 holds a table associating the virtual MAC address and virtual IP address of the virtual machine with the physical MAC address of the server that operates the virtual machine as virtual machine information according to the setting from the management apparatus 10. To do. As shown in FIG. 2, the controller 20 collates the physical MAC address of the server set from the management apparatus 10 with the physical MAC address of the server notified from the switch 30, and if both match, both are supported. In addition, based on the virtual MAC address and virtual IP address of the virtual machine on the server, a flow entry related to the packet addressed to the virtual machine is set in the switch 30.
- the controller 20 includes the physical MAC address of the server (“SV1 MAC” of “VM Information”) set from the management apparatus 10 and the physical MAC address of the server notified from the switch 30 (“Server Information”). "SV1 MAC”).
- SV1 MAC the physical MAC address of the server
- VM1 MAC the physical MAC address of the server notified from the switch 30
- Server Information the physical MAC address of the server
- the controller 20 sets the change of the flow entry related to the packet addressed to the virtual machine in the switch 30. For example, when the switch 30 on the path is changed by changing the physical MAC address of the server, the controller 20 deletes the flow entry regarding the packet addressed to the virtual machine set in the switch 30 on the current path, A flow entry related to the packet addressed to the virtual machine is set in the switch 30 corresponding to the changed server.
- the controller 20 sends an ARP (Address Resolution Protocol) request from the virtual machine via the switch 30 when the virtual machine sends an ARP (Address Resolution Protocol) request.
- ARP Address Resolution Protocol
- the ARP request is received, the virtual MAC address and the virtual IP address of the virtual machine held as the virtual machine information are referenced, and an ARP response is returned to the virtual machine based on the corresponding information.
- the switch 30 performs packet transfer in the CU separation type network.
- the switch 30 is a switch corresponding to the open flow technology, and holds a flow table.
- the switch 30 detects the physical MAC address of the server 40 when receiving an ARP request from the server 40 and notifies the controller 20 of the physical MAC address of the server 40. .
- the switch 30 receives an ARP request inquiring about the physical MAC address of the server 40 from the controller 20, transfers the ARP request to the server 40, and transfers an ARP response from the server 40 to the controller 20.
- the controller 20 may be notified of the physical MAC address of the server.
- the switch 30 notifies the controller 20 of its own port number connected to the server together with the physical MAC address of the server as server information (Server Information). As a result, the controller 20 recognizes that the server 40 is under the control of the switch 30.
- the server 40 is a physical server under the control of the switch 30 and provides a service in the CU separation type network.
- the server 40 manages the virtual machine (VM) 50.
- VM virtual machine
- a virtual machine (VM) 50 can be operated.
- the server 40 generates and operates a virtual machine 50 using a virtual machine monitor (VMM: Virtual Machine Monitor) such as a hypervisor.
- VMM Virtual Machine Monitor
- the role / use of the server 40 is not limited to the above example.
- the virtual machine 50 is a virtual machine (VM) that runs on the server 40.
- the combination of the virtual MAC address and the virtual IP address set in the virtual machine 50 is one of the combinations of the virtual MAC address and the virtual IP address of the virtual machine held by the management apparatus 10.
- the management apparatus 10 may manage the operating status of all the virtual machines, and may simultaneously generate the virtual machine 50 to the server 40 and notify the controller 20 of the virtual machine information.
- the management device 10 directly or indirectly determines the virtual MAC address and virtual IP address of the virtual machine 50 and its own physical MAC address. May be notified.
- the router 60 is a relay device that connects the switch 30 and an external network (such as the Internet).
- an access router Access Router
- a center router Center Router
- the access router is a relay device that connects the switch 30 and the center router.
- the center router is a relay device that connects the access router and an external network.
- the controller 20, and the server 40 a computer such as a PC (personal computer), an appliance, a workstation, a mainframe, and a supercomputer is assumed.
- the server 40 include a mobile phone, a smart phone, a smart book, a car navigation system (car navigation system), a portable game machine, a home game machine, a gadget (electronic device), an interactive TV, a digital tuner, and a digital recorder.
- Information home appliances, POS (Point of Sale) terminals, OA (Office Automation) devices, over-the-counter terminals / high-function copiers, digital signage (digital signage), and the like can be considered.
- the management device 10, the controller 20, and the server 40 may be an expansion board mounted on a computer or a virtual machine (VM: Virtual Machine) built on a physical machine.
- VM Virtual Machine
- the management device 10, the controller 20, and the server 40 may be mounted on a moving body such as a vehicle, a ship, or an aircraft.
- a network switch or the like is assumed.
- a general router is assumed.
- Other examples of the switch 30 and the router 60 include a proxy, a gateway, a firewall, a load balancer, a bandwidth control device / security monitoring control device (gatekeeper).
- a base station, an access point (AP), a communication satellite (CS), or a computer having a plurality of communication ports can be considered.
- a LAN Local Area Network
- Other examples include the Internet, wireless LAN (Wireless LAN), WAN (Wide Area Network), backbone (Backbone), cable TV (CATV) line, fixed telephone network, mobile phone network, WiMAX (IEEE 802.16a), 3G (3rd Generation), dedicated line (lease line), IrDA (Infrared Data Association), Bluetooth (registered trademark), serial communication line, data bus, and the like are also conceivable.
- the management device 10, the controller 20, the switch 30, the server 40, and the router 60 are driven based on a program and execute a predetermined process, a memory that stores the program and various data, a communication This is realized by an interface (I / F).
- processors include a CPU (Central Processing Unit), a microprocessor (NP), a network processor (NP: Network Processor), a microcontroller, or a semiconductor integrated circuit (IC: Integrated Circuit) having a dedicated function. Conceivable.
- CPU Central Processing Unit
- NP microprocessor
- NP network processor
- IC Integrated Circuit
- semiconductor storage devices such as RAM (Random Access Memory), ROM (Read Only Memory), EEPROM (Electrically Erasable and Programmable Read Only Memory), and HDD Memory (SDHidK)
- RAM Random Access Memory
- ROM Read Only Memory
- EEPROM Electrically Erasable and Programmable Read Only Memory
- HDD Memory HDD Memory
- An auxiliary storage device such as State Drive
- a removable disk such as a DVD (Digital Versatile Disk)
- a storage medium such as an SD memory card (Secure Digital memory card), or the like
- a buffer or a register may be used.
- DAS Direct Attached Storage
- FC-SAN Fibre Channel-Storage Area Network
- NAS Network Attached Storage
- IP-SAN IP-Storage Area
- Examples of the above communication interfaces include semiconductor integrated circuits such as boards (motherboards and I / O boards) that support network communication, network adapters such as NIC (Network Interface Card), and similar expansion cards, communication devices such as antennas, etc.
- a communication port such as a connection port (connector) is conceivable.
- the internal configuration for realizing the processes of the management apparatus 10, the controller 20, the switch 30, the server 40, and the router 60 is a module, a component, a dedicated device, or activation (calling) of these modules. It may be a program.
- Step S101 The management device 10 sets the virtual MAC address and virtual IP address of the virtual machine 50 and the physical MAC address of the server 40 that operates the virtual machine 50 in the controller 20 as virtual machine information (VM Information).
- VM Information virtual machine information
- Step S102 The controller 20 holds the virtual MAC address and the virtual IP address of the virtual machine 50 and the physical MAC address of the server 40 that operates the virtual machine 50 as virtual machine information according to the setting from the management apparatus 10.
- Step S103 When the server 40 is connected to the subordinate, the switch 30 detects the physical MAC address of the server 40 when receiving an ARP request from the server 40 and notifies the controller 20 of the physical MAC address of the server 40. . At this time, the controller 20 sets a flow entry related to the packet addressed to the server 40 in the switch 30 based on the physical MAC address of the server 40 using the open flow technology.
- Step S104 The controller 20 collates the physical MAC address of the held server with the physical MAC address of the server notified from the switch 30. If both match, the controller 20 associates the physical MAC address and the virtual machine 50 on the server. Based on the virtual MAC address and the virtual IP address, a flow entry related to the packet addressed to the virtual machine 50 is set in the switch 30.
- Step S105 The server 40 generates and operates a virtual machine 50 using a virtual machine monitor (VMM) such as a hypervisor.
- VMM virtual machine monitor
- Step S106 The switch 30 receives the ARP request from the virtual machine 50 after the flow entry related to the packet addressed to the virtual machine 50 is set. Here, the switch 30 transfers the ARP request from the virtual machine 50 to the controller 20.
- Step S107 The controller 20 receives the ARP request from the virtual machine 50 via the switch 30, refers to the virtual machine information, and returns an ARP response to the virtual machine 50.
- Step S201 When the physical MAC address of the server that operates the virtual machine 50 is changed, the management apparatus 10 again, as the virtual machine information (VM Information), the virtual MAC address and virtual IP address of the virtual machine, and the changed server A physical MAC address is set in the controller 20. At this time, the management apparatus 10 may reset only the physical MAC address of the server in the controller 20 based on the contents after the change.
- VM Information virtual machine information
- the management apparatus 10 may reset only the physical MAC address of the server in the controller 20 based on the contents after the change.
- Step S202 When the change of the physical MAC address of the server 40 that operates the virtual machine 50 is notified by the setting from the management apparatus 10, the controller 20 sets the change of the flow entry related to the packet addressed to the virtual machine 50 in the switch 30. .
- Step S203 The server 40 migrates the virtual machine 50 using a virtual machine monitor (VMM) such as a hypervisor.
- VMM virtual machine monitor
- Step S204 The switch 30 corresponding to the migration destination server 40 of the virtual machine 50 receives the ARP request from the migrated virtual machine 50 after the flow entry regarding the packet addressed to the virtual machine 50 is set. Here, the switch 30 transfers the ARP request from the virtual machine 50 to the controller 20.
- Step S205 The controller 20 receives the ARP request from the virtual machine 50 via the switch 30, refers to the virtual machine information, and returns an ARP response to the virtual machine 50.
- the controller 20 includes a storage unit 21, a detection unit 22, and a setting unit 23.
- the storage unit 21 stores virtual machine information set from the management apparatus 10, that is, the virtual MAC address and virtual IP address of the virtual machine, and the physical MAC address of the server that operates the virtual machine. At this time, the storage unit 21 also stores the virtual MAC address and virtual IP address of the virtual machine 50 and the physical MAC address of the server 40 that operates the virtual machine 50.
- the detecting unit 22 detects the physical MAC address of the server 40 under the switch 30 via the switch 30.
- the detection unit 22 detects the physical MAC address of the server 40 by receiving a packet including the physical MAC address of the server 40 in the area of the transmission source address of the header information via the switch 30.
- the detection unit 22 may store the detected information in the storage unit 21.
- the setting unit 23 collates the physical MAC address of the server set from the management device 10 with the physical MAC address of the server 40 detected via the switch 30. Based on the virtual MAC address and virtual IP address of the virtual machine 50 on 40, a flow entry related to the packet addressed to the virtual machine 50 is set in the switch 30.
- the storage unit 21, the detection unit 22, and the setting unit 23 are driven by a processor that executes predetermined processing, a memory that stores the program and various data, and a communication interface (I / F). Realized.
- the switch 30 detects the identification information of the subordinate server 40 and notifies the controller 20 of the identification information of the server 40.
- the controller 20 calculates a communication path with the server 40 and addresses the server 40.
- a flow entry related to the packet is set in the switch 30.
- the controller 20 does not need to collate the identification information of the server 40 set from the management device 10 with the identification information of the server 40 notified from the switch 30. In this case, even if the controller 20 does not notify the identification information of the subordinate server 40 from the switch 30, the controller 20 determines the communication path with the server 40 based only on the identification information of the server 40 set from the management apparatus 10. It is possible to calculate and set the flow entry regarding the packet addressed to the server 40 in the switch 30.
- Appendix 1 A controller in which identification information of a virtual machine and identification information of a server that operates the virtual machine are set; A switch for detecting identification information of a subordinate server and notifying the controller of the identification information of the server, If the set server identification information and the server identification information notified from the switch match, the controller, based on the virtual machine identification information on the server, the flow related to the packet addressed to the virtual machine A network system that sets an entry on the switch.
- a storage unit that holds identification information of a virtual machine and identification information of a server that operates the virtual machine;
- a detection unit that detects identification information of a server under the switch via a switch that forwards a received packet according to the set flow entry; When the detected server identification information and the held server identification information match, based on the virtual machine identification information on the server, the flow entry relating to the packet addressed to the virtual machine is switched to the switch.
- a controller having a setting unit to be set.
- (Appendix 6) Holding virtual machine identification information and identification information of a server that operates the virtual machine; Detecting the identification information of the server under the switch via a switch that forwards the received packet according to the set flow entry; When the detected server identification information and the held server identification information match, based on the virtual machine identification information on the server, the flow entry relating to the packet addressed to the virtual machine is switched to the switch.
- a storage medium storing a program for causing a computer to execute the step to be set.
- the present invention is directed to a CU separation type network such as an OpenFlow network.
- the OpenFlow network is only an example.
- the present invention can also be directed to a network that performs path control other than “control of flow using open flow technology”.
- the flow entry is set for the switch in parallel with the virtual machine generation and migration operations. That is, prior to the start of virtual machine communication, the setting of the flow entry for the switch is completed.
- the identification information of the virtual machine and the identification information of the server that operates the virtual machine are set in the controller from an external management device.
- the controller detects the identification information of the server under the switch via the switch, and checks the identification information of the set server, thereby grasping the identification information of the virtual machine running on the server. Can do. This eliminates the need for the controller to query the virtual machine identification information every time a virtual machine is created. Therefore, the load on the controller is greatly reduced compared to the case where the present invention is not applied.
Abstract
Description
オープンフローネットワークでは、OFC(OpenFlow Controller)等のコントローラが、OFS(OpenFlow Switch)等のスイッチのフローテーブルを操作することによりスイッチの挙動を制御する。コントローラとスイッチの間は、コントローラがオープンフロープロトコルに準拠した制御メッセージを用いてスイッチを制御するためのセキュアチャネル(Secure Channel)により接続されている。
以下に、本発明の第1実施形態について添付図面を参照して説明する。
図1に示すように、本発明に係るネットワークシステムは、管理装置(Management system)10と、コントローラ(OFC:OpenFlow Controller)20と、スイッチ(Switch)30と、サーバ(Server)40と、仮想マシン(VM:Virtual Machine)50と、ルータ(Router)60を含む。
このとき、管理装置10が、全ての仮想マシンの稼働状況を管理し、サーバ40への仮想マシン50の生成指示と、コントローラ20への仮想マシン情報の通知を同時に行うようにしても良い。
以下に、本発明に係るネットワークシステムを実現するための具体的なハードウェアの例について説明する。
図3を参照して、本実施形態における設定情報の登録処理の詳細について説明する。
管理装置10は、仮想マシン情報(VM Information)として、仮想マシン50の仮想MACアドレス及び仮想IPアドレスと、当該仮想マシン50を稼働させるサーバ40の物理MACアドレスとをコントローラ20に設定する。
コントローラ20は、管理装置10からの設定により、仮想マシン情報として、仮想マシン50の仮想MACアドレス及び仮想IPアドレスと、当該仮想マシン50を稼働させるサーバ40の物理MACアドレスとを保持する。
スイッチ30は、配下にサーバ40が接続された場合、当該サーバ40からARP要求を受信した際に、当該サーバ40の物理MACアドレスを検出し、当該サーバ40の物理MACアドレスをコントローラ20に通知する。このとき、コントローラ20は、オープンフロー技術を用いて、サーバ40の物理MACアドレスを基に、当該サーバ40宛のパケットに関するフローエントリをスイッチ30に設定する。
コントローラ20は、保持しているサーバの物理MACアドレスと、スイッチ30から通知されたサーバの物理MACアドレスとを照合し、両方が一致した場合、両方を対応付け、当該サーバ上の仮想マシン50の仮想MACアドレス及び仮想IPアドレスを基に、当該仮想マシン50宛のパケットに関するフローエントリをスイッチ30に設定する。
サーバ40は、ハイパーバイザ(hypervisor)等の仮想マシンモニタ(VMM)によって仮想マシン50を生成し、稼働させる。
スイッチ30は、当該仮想マシン50宛のパケットに関するフローエントリが設定された後、当該仮想マシン50からARP要求を受信する。ここでは、スイッチ30は、当該仮想マシン50からのARP要求をコントローラ20に転送する。
コントローラ20は、スイッチ30を介して、当該仮想マシン50からのARP要求を受信し、仮想マシン情報を参照して、当該仮想マシン50にARP応答を返信する。
図4を参照して、本実施形態における設定情報の変更処理の詳細について説明する。
管理装置10は、仮想マシン50を稼働させるサーバの物理MACアドレスが変更された場合、再度、仮想マシン情報(VM Information)として、仮想マシンの仮想MACアドレス及び仮想IPアドレスと、変更後のサーバの物理MACアドレスとをコントローラ20に設定する。このとき、管理装置10は、変更後の内容を基に、サーバの物理MACアドレスのみ、コントローラ20に再設定するようにしても良い。
コントローラ20は、管理装置10からの設定により、仮想マシン50を稼働させるサーバ40の物理MACアドレスの変更が通知された場合、当該仮想マシン50宛のパケットに関するフローエントリの変更をスイッチ30に設定する。
サーバ40は、ハイパーバイザ(hypervisor)等の仮想マシンモニタ(VMM)によって仮想マシン50を移動(migration)させる。
仮想マシン50の移動先のサーバ40に対応するスイッチ30は、当該仮想マシン50宛のパケットに関するフローエントリが設定された後、移動後の仮想マシン50からARP要求を受信する。ここでは、当該スイッチ30は、当該仮想マシン50からのARP要求をコントローラ20に転送する。
コントローラ20は、スイッチ30を介して、当該仮想マシン50からのARP要求を受信し、仮想マシン情報を参照して、当該仮想マシン50にARP応答を返信する。
上記の内容を基に、本発明に係るコントローラの構成を、機能ブロックとして表現する。
以下に、本発明の第2実施形態について説明する。
なお、上記の各実施形態は、組み合わせて実施することも可能である。例えば、一部のスイッチについてのみ、配下にどのサーバがあるか事前に判明している場合、配下のサーバが事前に判明しているスイッチに対しては第2実施形態の方式を適用し、配下のサーバが事前に判明していないスイッチに対しては第1実施形態の方式を適用することが考えられる。
上記の実施形態の一部又は全部は、以下の付記のように記載することも可能である。但し、実際には、以下の記載例に限定されない。
仮想マシンの識別情報と、前記仮想マシンを稼働させるサーバの識別情報とを設定されたコントローラと、
配下のサーバの識別情報を検出し、当該サーバの識別情報を前記コントローラに通知するスイッチと
を含み、
前記コントローラは、前記設定されたサーバの識別情報と、前記スイッチから通知されたサーバの識別情報が一致する場合、当該サーバ上の仮想マシンの識別情報を基に、当該仮想マシン宛のパケットに関するフローエントリを前記スイッチに設定する
ネットワークシステム。
付記1に記載のネットワークシステムであって、
前記仮想マシンの識別情報と、前記仮想マシンを稼働させるサーバの識別情報とを前記コントローラに設定する管理装置
を更に含み、
前記コントローラは、前記仮想マシンの稼働中に、前記管理装置から前記仮想マシンを稼働させるサーバの識別情報の変更が通知された場合、当該仮想マシン宛のパケットに関するフローエントリの変更を前記スイッチに設定する
ネットワークシステム。
仮想マシンの識別情報と、前記仮想マシンを稼働させるサーバの識別情報とを保持する記憶部と、
設定されたフローエントリに従って受信パケットを転送するスイッチを介して、当該スイッチ配下のサーバの識別情報を検出する検出部と、
前記検出されたサーバの識別情報と、前記保持しているサーバの識別情報とが一致する場合、当該サーバ上の仮想マシンの識別情報を基に、当該仮想マシン宛のパケットに関するフローエントリを前記スイッチに設定する設定部と
を具備する
コントローラ。
コントローラに、仮想マシンの識別情報と、前記仮想マシンを稼働させるサーバの識別情報とを設定することと、
前記コントローラからスイッチを介して、前記スイッチ配下のサーバの識別情報を検出し、当該サーバの識別情報を検出することと、
前記設定されたサーバの識別情報と、前記検出されたサーバの識別情報が一致する場合、当該サーバ上の仮想マシンの識別情報を基に、当該仮想マシン宛のパケットに関するフローエントリを前記スイッチに設定することと
を含む
ネットワーク管理方法。
付記4に記載のネットワーク管理方法であって、
管理装置から、前記仮想マシンの識別情報と、前記仮想マシンを稼働させるサーバの識別情報とを前記コントローラに設定することと、
前記仮想マシンの稼働中に、前記管理装置から前記コントローラに、前記仮想マシンを稼働させるサーバの識別情報の変更が通知された場合、当該仮想マシン宛のパケットに関するフローエントリの変更を前記スイッチに設定することと
を更に含む
ネットワーク管理方法。
仮想マシンの識別情報と、前記仮想マシンを稼働させるサーバの識別情報とを保持するステップと、
設定されたフローエントリに従って受信パケットを転送するスイッチを介して、当該スイッチ配下のサーバの識別情報を検出するステップと、
前記検出されたサーバの識別情報と、前記保持しているサーバの識別情報とが一致する場合、当該サーバ上の仮想マシンの識別情報を基に、当該仮想マシン宛のパケットに関するフローエントリを前記スイッチに設定するステップと
を計算機に実行させるためのプログラムを格納した
記憶媒体。
以上のように、本発明は、オープンフローネットワークを始めとするCU分離型ネットワークを対象としている。なお、オープンフローネットワークは一例に過ぎない。実際には、本発明は、「オープンフロー技術を使用したフローの制御」以外の経路制御を行うネットワークを対象とすることもできる。
Claims (10)
- ネットワークを管理する管理装置と、
前記管理装置からの設定に従って、サーバの情報を保持するコントローラと、
前記ネットワークを形成し、前記コントローラからの制御に従って、パケットをフローとして一律に制御するためのルールとアクションとが定義されたフローエントリを登録し、当該フローエントリのルールにマッチするパケットに対し、当該フローエントリのアクションを実行するスイッチと
を含み、
前記コントローラは、前記設定されたサーバの情報を基に、当該サーバとの通信経路を計算し、当該サーバ宛のパケットに関するフローエントリを前記スイッチに設定する
ネットワークシステム。 - 請求項1に記載のネットワークシステムであって、
前記スイッチは、配下のサーバの情報を検出し、当該サーバの情報を前記コントローラに通知し、
前記コントローラは、前記管理装置からの設定に従って、仮想マシンの情報と、前記仮想マシンを稼働させるサーバの情報とを対応付けて保持し、前記設定されたサーバの情報と、前記スイッチから通知されたサーバの情報が一致する場合、当該サーバ上の仮想マシンの情報を基に、当該仮想マシン宛のパケットに関するフローエントリを前記スイッチに設定し、
当該サーバは、当該仮想マシンを生成し、稼働させる
ネットワークシステム。 - 請求項2に記載のネットワークシステムであって、
前記コントローラは、前記仮想マシンの稼働中に、前記管理装置から前記仮想マシンを稼働させるサーバの情報の変更が通知された場合、当該仮想マシン宛のパケットに関するフローエントリの変更を前記スイッチに設定する
ネットワークシステム。 - ネットワークを管理する管理装置から設定されたサーバの情報を保持する手段と、
前記設定されたサーバの情報を基に、当該サーバとの通信経路を計算し、当該サーバ宛のパケットに関するフローエントリを、前記ネットワークを形成するスイッチであって、設定されたフローエントリに従って受信パケットを転送するスイッチに設定する手段と
を具備する
コントローラ。 - 請求項4に記載のコントローラであって、
前記管理装置からの設定に従って、仮想マシンの情報と、前記仮想マシンを稼働させるサーバの情報と、を対応付けて保持する手段と、
前記スイッチを介して、当該スイッチ配下のサーバの情報を検出する手段と、
前記検出されたサーバの情報と、前記保持しているサーバの情報とが一致する場合、当該サーバ上の仮想マシンの情報を基に、当該仮想マシン宛のパケットに関するフローエントリを前記スイッチに設定する手段と
を更に具備する
コントローラ。 - 請求項5に記載のコントローラであって、
前記仮想マシンの稼働中に、前記管理装置から前記仮想マシンを稼働させるサーバの情報の変更が通知された場合、当該仮想マシン宛のパケットに関するフローエントリの変更を前記スイッチに設定する手段
を更に具備する
コントローラ。 - 計算機により実施されるネットワーク管理方法であって、
ネットワークを管理する管理装置から設定されたサーバの情報を保持することと、
前記設定されたサーバの情報を基に、当該サーバとの通信経路を計算し、当該サーバ宛のパケットに関するフローエントリを、前記ネットワークを形成するスイッチであって、設定されたフローエントリに従って受信パケットを転送するスイッチに設定することと
を含む
ネットワーク管理方法。 - 請求項7に記載のネットワーク管理方法であって、
前記管理装置からの設定に従って、仮想マシンの情報と、前記仮想マシンを稼働させるサーバの情報と、を対応付けて保持することと、
前記スイッチを介して、当該スイッチ配下のサーバの情報を検出することと、
前記検出されたサーバの情報と、前記保持しているサーバの情報とが一致する場合、当該サーバ上の仮想マシンの情報を基に、当該仮想マシン宛のパケットに関するフローエントリを前記スイッチに設定することと
を更に含む
ネットワーク管理方法。 - 請求項8に記載のネットワーク管理方法であって、
前記仮想マシンの稼働中に、前記管理装置から前記仮想マシンを稼働させるサーバの情報の変更が通知された場合、当該仮想マシン宛のパケットに関するフローエントリの変更を前記スイッチに設定すること
を更に含む
ネットワーク管理方法。 - ネットワークを管理する管理装置から設定されたサーバの情報を保持するステップと、
前記設定されたサーバの情報を基に、当該サーバとの通信経路を計算し、当該サーバ宛のパケットに関するフローエントリを、前記ネットワークを形成するスイッチであって、設定されたフローエントリに従って受信パケットを転送するスイッチに設定するステップと
を計算機に実行させるためのプログラムを格納した
記憶媒体。
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RU2013110308A (ru) | 2014-10-20 |
CN103081409A (zh) | 2013-05-01 |
US20130166720A1 (en) | 2013-06-27 |
KR101464900B1 (ko) | 2014-11-24 |
US20160182307A1 (en) | 2016-06-23 |
RU2562438C2 (ru) | 2015-09-10 |
CN104780070B (zh) | 2018-04-24 |
JPWO2012033117A1 (ja) | 2014-01-20 |
EP2615783A1 (en) | 2013-07-17 |
JP5652475B2 (ja) | 2015-01-14 |
CA2810663A1 (en) | 2012-03-15 |
CN104780070A (zh) | 2015-07-15 |
EP2615783A4 (en) | 2015-12-02 |
JP2015015763A (ja) | 2015-01-22 |
KR20130045919A (ko) | 2013-05-06 |
CN103081409B (zh) | 2015-07-08 |
US9313088B2 (en) | 2016-04-12 |
TWI472187B (zh) | 2015-02-01 |
JP5811253B2 (ja) | 2015-11-11 |
TW201212586A (en) | 2012-03-16 |
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