[go: up one dir, main page]

WO2014119602A1 - Appareil de commande, commutateur, système de communication, procédé de commande de commutateur et programme - Google Patents

Appareil de commande, commutateur, système de communication, procédé de commande de commutateur et programme Download PDF

Info

Publication number
WO2014119602A1
WO2014119602A1 PCT/JP2014/051913 JP2014051913W WO2014119602A1 WO 2014119602 A1 WO2014119602 A1 WO 2014119602A1 JP 2014051913 W JP2014051913 W JP 2014051913W WO 2014119602 A1 WO2014119602 A1 WO 2014119602A1
Authority
WO
WIPO (PCT)
Prior art keywords
control
switch
control channel
channel
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2014/051913
Other languages
English (en)
Japanese (ja)
Inventor
亮佑 河合
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Publication of WO2014119602A1 publication Critical patent/WO2014119602A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • 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
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
    • H04L41/0659—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities

Definitions

  • the present invention is based on a Japanese patent application: Japanese Patent Application No. 2013-015091 (filed on January 30, 2013), and the entire contents of the application are incorporated herein by reference.
  • the present invention relates to a control device, a switch, a communication system, a switch control method, and a program, and more particularly, to a control device, a communication system, a switch control method, and a program for centralized control of switches.
  • Patent Document 1 and Non-Patent Documents 1 and 2 propose a technique called OpenFlow that realizes the above-described centralized control type network.
  • OpenFlow captures communication as an end-to-end flow and performs path control, failure recovery, load balancing, and optimization on a per-flow basis.
  • the OpenFlow switch specified in Non-Patent Document 2 includes a secure channel for communication with the OpenFlow controller, and operates according to a flow table that is appropriately added or rewritten from the OpenFlow controller. For each flow, a set of match conditions (Match Fields), flow statistical information (Counters), and instructions (Instructions) that define processing contents are defined for each flow (non-patented). (Refer to “5.2 Flow Table” in Document 2).
  • the OpenFlow switch searches the flow table for an entry having a matching condition (see “5.3 Matching” in Non-Patent Document 2) that matches the header information of the received packet. If an entry that matches the received packet is found as a result of the search, the OpenFlow switch updates the flow statistical information (counter) and processes the processing (designated) in the instruction field of the entry for the received packet. Perform packet transmission, flooding, discard, etc. from the port. On the other hand, if no entry matching the received packet is found as a result of the search, the OpenFlow switch sends an entry setting request to the OpenFlow controller via the secure channel, that is, a control for processing the received packet. An information transmission request (Packet-In message) is transmitted. The OpenFlow switch receives a flow entry whose processing content is defined and updates the flow table. As described above, the OpenFlow switch performs packet transfer using the entry stored in the flow table as control information.
  • a matching condition see “5.3 Matching” in Non-Patent Document 2
  • the OpenFlow switch updates the flow statistical information (counter
  • a control channel for communication between the control device of the network on the central control side and the switch As a control channel for communication between the control device of the network on the central control side and the switch, a control channel is prepared, and a control channel is provided in the data network between the switches without providing a control network.
  • the in-band control method is a realistic method when the network becomes large, and it is considered that OpenFlow will spread in the future to be applied to large-scale networks and server virtualization environments.
  • the in-band control method has two major problems.
  • the first problem is that even if a failure or the like of a switch on the path constituting the control channel has occurred, even if the switch and the switch connected thereto become uncontrollable, the control device immediately It is a point that cannot be detected.
  • the second problem is that even if the control device can detect that the switch has become uncontrollable, for example, by confirming the existence of the switch, the control channel is not reconfigured unless the control channel is reconstructed by some means. It is a point that the control of the switch which used the system cannot be resumed.
  • Non-Patent Document 3 it is necessary to add a function for interpreting special frames to each switch, which may offset the advantage of the in-band control method that can be applied to a large-scale network.
  • An object of the present invention is to provide a control device, a switch, a communication system, a switch control method, and a program that can contribute to the improvement of fault tolerance and availability of a network that uses an in-band control method for a control channel.
  • a topology storage unit that stores a connection relationship between switches connected by a data transfer channel, and a control that manages information of a control channel configured using the data transfer channel between the switches
  • a channel management unit a switch control unit that controls the switch group via the control channel, and a control channel reconfiguration unit that changes a path of the control channel based on information obtained from the switch.
  • a control device is provided.
  • a switch that includes a routing table for transferring control packets to a control device and rewrites the routing table in response to an instruction to change the control channel from the control device.
  • a topology storage unit that stores a connection relationship between switches connected by a data transfer channel, and a control that manages information of a control channel configured using the data transfer channel between the switches
  • a channel management unit a switch control unit that controls the switch group via the control channel, and a control channel reconfiguration unit that changes a path of the control channel based on information obtained from the switch.
  • a communication system including a control device and a switch group for processing a received packet based on control information set by the control device via the control channel.
  • a topology storage unit that stores a connection relationship between switches connected by a data transfer channel, and a control that manages information on a control channel configured using the data transfer channel between the switches
  • a control device comprising a channel management unit and a switch control unit that controls the switch group via the control channel receives information indicating a state of a data transfer channel used as the control channel from the switch.
  • a method for controlling a switch including a step of obtaining, and a step of changing a route of the control channel based on information obtained from the switch. This method is linked to a specific machine, which is a control device that controls the switch group through a control channel configured using a data transfer channel between switches.
  • a topology storage unit that stores a connection relationship between switches connected by a data transfer channel, and a control that manages information on a control channel configured using the data transfer channel between the switches
  • a computer having a channel management unit and a switch control unit that controls the switch group via the control channel acquires information indicating the state of the data transfer channel used as the control channel from the switch.
  • This program can be recorded on a computer-readable (non-transient) storage medium. That is, the present invention can be embodied as a computer program product.
  • a topology storage unit 315 that stores connection relationships between switches 33-1 to 33-4 connected by a data transfer channel, and a control channel management unit 313
  • a control device 31A including a switch control unit 312 that controls the switch group via a control channel configured using a data transfer channel, and a control channel reconfiguration unit 314.
  • control channel management unit 313 manages information on the control channel configured using the data transfer channel between the switches 33-1 to 33-4. Then, the control channel reconfiguring unit 314 performs an operation of changing the route of the control channel based on information obtained from the switch.
  • the switch 33-4 of the switch 33-3 is connected.
  • the control channel reconfiguration unit 314 refers to the topology storage unit 315 and determines that an alternative route passing through the switches 33-1 33-2, and 33-4 can be configured, and is shown in FIG.
  • the route of the control channel of the switch 33-4 is changed.
  • the trigger for the control channel reconfiguring unit 314 to change the control channel path is not limited to the failure of the switch port on the control channel.
  • the path of the control channel can be changed in response to the occurrence of congestion in the data transfer channel that accommodates the control channel or the new connection of the host to the switch controlled by the control channel.
  • control channel can be flexibly changed, it becomes possible to improve the fault tolerance and availability of the centralized control network.
  • FIG. 4 is a diagram illustrating the configuration of the communication system according to the first embodiment of this invention.
  • a switch 33 hereinafter referred to as “switch 33” when the switches are not particularly distinguished
  • a control device 31 that controls the switch 33 are shown.
  • switch 33 only one switch 33 is shown, but a plurality of switches 33 may be connected to the control device 31.
  • the control device 31 can control not only these directly connected switches but also other switches connected in a stack via the switch 33.
  • the control device 31 includes a path calculation unit 311, a switch control unit 312, a control channel management unit 313, a topology storage unit 315, and a control channel information storage unit 316.
  • the topology storage unit 315 stores topology information of a network configured by a switch to be controlled by the control device 31.
  • the network topology information stored in the topology storage unit 315 may be set by a network administrator, or the control device 31 using information collected from the switch 33 using LLDP (Link Layer Discovery Protocol) or the like. May be automatically generated.
  • LLDP Link Layer Discovery Protocol
  • the route calculation unit 311 When the route calculation unit 311 receives a route calculation request from the switch control unit 312, the route calculation unit 311 refers to the topology information stored in the topology storage unit 315 and calculates a route between any switches.
  • the Dijkstra method or the like can be used as a route calculation method.
  • the routes calculated by the route calculation unit 311 include not only a route for transferring data packets but also a route (control channel) for transferring control packets between the control device 31 and an arbitrary switch. Therefore, the path calculation unit 311 has an alternative path calculation function of the control channel reconfiguration unit 314 described above.
  • the switch control unit 312 Upon receiving a control information (flow entry) transmission request message (corresponding to “Packet-In message” in Non-Patent Document 2) from the switch 33, the switch control unit 312 requests the route calculation unit 311 to calculate a route.
  • the switch control unit 312 receives a route from the route calculation unit 311, the switch control unit 312 generates control information (flow entry) for transferring a packet along the route to the switch 33 on the route, and sends the control information to the switch 33 on the route.
  • the switch control unit 312 determines the control information (flow entry).
  • Information on the switch in which the control information (flow entry) is set (described later flow entry owner information), and information on the switch controlled by the control channel (described later control channel owner information)
  • the operation of saving in 316 is performed.
  • control channel management unit 313 receives control information (flow entry) as control channel configuration information and information on the switch in which the control information (flow entry) is set (described later).
  • control information flow entry
  • Flow entry owner information and switch information (control channel owner information described later) controlled by the control channel are stored in the control channel information storage unit 316.
  • control channel management unit 313 When the control channel management unit 313 receives a port failure status notification (for example, notified by “Port Status message” in Non-Patent Document 2) from the switch 33 via the switch control unit 312, the control channel management unit 313 receives the control channel. With reference to the information storage unit 316, the control channel affected by the failure of the port of the switch is searched, and when the affected control channel is found, the route calculation unit 311 is requested to calculate an alternative route. When the alternative route is calculated by the route calculation unit 311, the control channel management unit 313 replaces the control channel via the switch control unit 312 and is held in the control channel information storage unit 316. Update control information (flow entry).
  • a port failure status notification for example, notified by “Port Status message” in Non-Patent Document 2
  • the control channel management unit 313 receives the control channel.
  • the control channel affected by the failure of the port of the switch is searched, and when the affected control channel is found, the route calculation unit 311 is requested to calculate an alternative route.
  • FIG. 5 is a diagram illustrating an example of control channel information held in the control channel information storage unit 316.
  • the content of control information (flow entry) consisting of a combination of a match condition, a counter, and an instruction, information on the switch in which the control information (flow entry) is set (flow entry owner information), An entry associating information (switch channel owner information described later) of a switch controlled by the control channel is shown.
  • the control channel information in FIG. 5 includes the control information (flow entry) set in the switch on the control channel of the switch 33-4 via the switches 33-1 and 33-2 in FIG. DPID) and the control target switch of the control channel are associated with each other.
  • FIG. 6 is a block diagram showing a detailed configuration of the switch 33.
  • the switch 33 includes a routing table 331 that defines next hop information of a control packet to be transmitted to the control device 31, and a control information storage unit 333 that stores control information (flow entry) received from the control device 31.
  • a packet processing unit 332 that searches the control information (flow entry) stored in the control information storage unit 333 for control information (flow entry) having a matching condition that matches the received packet, and processes the packet; It has. As a result of the search, the packet processing unit 332 requests the control device 31 to send a control information (flow entry) transmission request when control information (flow entry) having matching conditions matching the received packet is not found. .
  • the packet processing unit 332 When receiving the control information (flow entry) from the control device 31, the packet processing unit 332 stores the received control information (flow entry) in the control information storage unit 333. Further, when the packet to be transmitted is a control packet addressed to the control device 31, the packet processing unit 332 transmits the control packet from the port defined in the routing table 331.
  • FIG. 7 is a diagram illustrating a configuration example of control information (flow entry) set in the control information storage unit 333 of the switch 33 by the control device 31.
  • the control information (flow entry) corresponds to a match condition, a counter that records statistical information of a packet that matches the match condition, and an instruction that indicates processing contents to be applied to the packet that matches the match condition. It is configured with.
  • the match condition is configured by any combination of fields from layer 1 to layer 4.
  • Each information can be set with a wild card. As instructions, it is possible to designate packet transfer (Output), discard (Drop), header rewriting (SET), and the like.
  • match condition in FIG. 7 is not limited to the illustrated example.
  • an IPv6 header or the like can be added to the match condition.
  • the counter field may be omitted.
  • Each unit (processing means) of the control device 31 and the switch 33 shown in FIGS. 4 and 6 is executed by a computer program that causes a computer constituting these devices to execute the above-described processes using the hardware. It can also be realized.
  • the switch 33-1 directly connected to the control device 31 transmits a control packet (for example, a Hello message of Non-Patent Document 2) to the control device 31 according to its own routing table 331.
  • the control channel is established.
  • the switch 33-2 switch 33-3) tries to establish a control channel with the control device 31, the first control packet from the switch 33-2 (switch 33-3)
  • the switch 33-3) is transferred to the switch 33-1 according to its own routing table 331.
  • the switch 33-1 receives the first control packet from the switch 33-2 (switch 33-3)
  • the switch 33-1 matches the corresponding match from the control information (flow entry) set in the control information storage unit 333. Search for control information (flow entry) with conditions.
  • control information (flow entry) corresponding to the first control packet from the switch 33-2 (switch 33-3) is not set in the switch 33-1, so that the switch 33-1 does not control.
  • the device 31 is requested to transmit control information (flow entry) by a Packet-In message.
  • FIG. 9 is a flowchart showing the operation (control channel establishment operation) of the control device 31 triggered by reception of the transmission request for the control information (flow entry).
  • the control channel establishment operation of the control device 31 will be described with reference to FIG.
  • the switch 33-1 receives a new packet (control packet of the switch 33-2 or 33-3) from an arbitrary switch (step S001)
  • the route calculation unit 311 sends a transmission request for control information (flow entry).
  • the header of the packet received (Packet-In message) is analyzed, and the transfer path is calculated.
  • the control device 31 uses the switch control unit 312 to generate control information (flow entry) to be set for the switch on the transfer path (step S003).
  • the control device 31 controls not only control information (flow entry) for transferring a control packet from the switch to the control device 31, but also control information (flow entry) for transferring a control packet from the control device 31 to the switch. ) May be generated.
  • the control device 31 determines whether or not the calculated route is a control channel (step S004). Whether or not the calculated route is a control channel is determined whether or not the destination IP address of the target packet matches the IP address of the control device 31, and the reception port of the packet in the switch 33-1 is the switch 33-2. Alternatively, the determination can be made based on whether the connection port is 33-3.
  • control channel management unit 313 stores control information (flow entry) set in the control channel information storage unit 316 in the switch on the path shown in FIG. ) And two pieces of owner information are stored (step S005).
  • control device 31 sets the flow entry generated by the switch control unit 312 to the switch on the route calculated in step S003 (step S006).
  • control device 31 sends a control information (flow entry) transmission request (Packet-In message) to the switch 33-1 that is the transmission source of the control information (flow entry) transmission request (Packet-In message). Is instructed to transfer the packet that triggered the request according to the calculated route (step S007; using the Packet-Out message of Non-Patent Document 2).
  • control packet that triggered the transmission request (Packet-In message) of the control information (flow entry) and the subsequent control packet are the control information (flow entry) set in the switch on the path constituting the control channel. ) And transferred.
  • the switch 33-2 or 33-3 is added to the control target of the control device 31.
  • the switch 33-4 transmits a control packet to the switch 33-2 or 33-3 determined in its own routing table 331
  • the switch 33-2 or 33-3 transmits to the control device 31.
  • a packet-in message requests transmission of control information (flow entry) for processing the control packet from the switch 33-4.
  • the control device 31 calculates a necessary route and sets control information (flow entry), so that the switch 33-4 is added to the control target of the control device 31.
  • establishment of a control channel between the control device 31 and the switches 33-1 to 33-4 is realized.
  • FIG. 11 is a flowchart showing the operation (control channel switching operation) of the control device 31 according to the first embodiment of the present invention.
  • the control channel switching operation of the control device 31 will be described with reference to FIG. First, when each of the switches 33-1 to 33-4 detects a link down of a connection port with another switch, the switch 33-1 to 33-4 transmits a failure notification (port down) to the control device 31.
  • control channel management unit 313 searches the control channel information storage unit 316 for a control channel affected by the failure of the port of the switch. (Step S102). The presence of a control channel that is affected by a failure of a port of a switch is searched for an entry in which the flow entry owner information (switch information) of the entry illustrated in FIG. 5 matches the output port defined in the instruction field. Can be found at
  • control device 31 uses the path calculation unit 311. , Calculate alternative routes. Further, in the control device 31, the switch control unit 312 generates control information (flow entry) to be set for the switch on this alternative route (step S104).
  • step S105 when the alternative route can be calculated and control information (flow entry) can also be generated (Yes in step S105), the control device 31 switches the switch on the alternative route calculated in step S104 to the switch.
  • the flow entry generated by the control unit 312 is set (step S106). Further, the control device 31 instructs the switch on the previous control channel to delete the control information (flow entry) for the control channel that is no longer needed, if necessary.
  • control device 31 instructs the switch of the alternative path owner calculated in step S104 to switch the control channel (step S107). Specifically, processing for instructing rewriting of the routing table 331 is performed so as to change the port that outputs the packet addressed to the control device 31.
  • step S103 If it is determined in step S103 that control channel replacement is not required (No in step S103) and if an alternative route cannot be calculated in step S105 (No in step S105), the topology information in the topology storage unit 315 is used. A process of removing the corresponding switch and excluding it from the control target is performed.
  • control channel replacement For example, it is assumed that the control channel of the In-band control method as shown by the double arrow in FIG. 10 has been established by repeating the series of processing shown in FIG.
  • the control device 31 that has received the notification refers to the control channel information held in the control channel information storage unit 316, and the control channel affected by the failure of the link is the control channel of the switch 33-2 and the switch It is determined that the control channel is 33-4. And the control apparatus 31 calculates an alternative path
  • control device 31 deletes the control information (flow entry) set in the switch on the previous control channel, and causes the switch on the new control channel to transfer the control packet along the alternative route. Send control information (flow entry).
  • control device 31 instructs the switch 33-2 and the switch 33-4 in which the control channel is changed to change the control channel (rewrite the routing table 331).
  • the control channel replacement is completed.
  • the first method is a method using UDP (User Datagram Protocol).
  • UDP User Datagram Protocol
  • a port for switching the control channel is prepared in advance in the switch 33 and is set in the Listen state.
  • the switch 33 rewrites the routing table 331 and reconnects the control channel.
  • the rewriting contents of the routing table 331 may be included in the control channel switching instruction.
  • the second method is a method in which control information (flow entry) for rewriting the routing table is set in advance in the control information storage unit 333 of the switch 33.
  • control information (flow entry) in which predetermined matching conditions and instructions (processing contents) for decoding a packet by the network processor and rewriting the routing table 331 are set. Then, by causing the switch 33 to transmit a packet from the nearest switch, the routing table can be rewritten and the control channel can be reconnected.
  • the rewriting contents of the routing table 331 can be controlled by setting a plurality of control information (flow entries) having different match conditions and rewriting contents of the routing table 331 and changing a packet transmitted to the switch.
  • the routing table 331 of the switch 33-4 in FIG. 12 when the routing table 331 of the switch 33-4 in FIG. 12 is to be rewritten, a packet from the switch 33-4 to the control device 31 is transmitted to the switch 33-2 on the route before re-transition and is transmitted to the control device 31. Will not reach.
  • the routing table 331 can be reliably rewritten.
  • a mechanism such as an electronic signature as a method for solving this problem. That is, when the control channel is established, the control device 31 and the switch 33 exchange their public keys with each other. When a failure occurs, the control device 31 issues a control channel switching instruction to the corresponding switch 33. The hash value is encrypted with the private key of the control device 31 itself to create an electronic signature. Then, the control device 31 encrypts the control channel switching instruction with the public key of the switch 33, adds an electronic signature, and transmits it to the switch 33. When the switch 33 receives the encrypted control channel switching instruction, the switch 33 decrypts the control channel switching instruction using the private key of the switch 33 itself. Next, the hash value of the control channel redirection instruction is obtained with the public key of the control device 31 exchanged in advance, and compared with the hash value sent from the control device 31 to confirm that it has not been tampered with.
  • control channel is replaced when triggered by the reception of the port down notification from the switch.
  • the control channel can be re-established when a host is newly connected to the switch controlled by the control.
  • the occurrence of congestion in the data transfer channel can be confirmed by the controller 31 inquiring from the switch 33 the value of the counter that records the statistical information of the packet that matches the matching condition in the control information (flow entry).
  • a new connection of the host to the switch 33 can be detected by receiving from the switch 33 a Packet-In message for a packet transmitted from the host.
  • the control channel reconfiguration unit transmits a control channel change instruction to the switch using UDP (User Datagram Protocol), A control device that causes the switch to rewrite a routing table for transferring control packets to the control device.
  • UDP User Datagram Protocol
  • Control information for rewriting the routing table for transferring the control packet to the control device is set in the switch, A control device that causes the switch to rewrite a routing table for transferring control packets to the control device by transmitting a control channel change instruction packet that matches the control information to the switch.
  • Control device 33 31, 31A Control device 33, 33-1 to 33-4 Switch 311 Path calculation unit 312 Switch control unit 313 Control channel management unit 314 Control channel reconfiguration unit 315 Topology storage unit 316 Control channel information storage unit 331 Routing table 332 Packet processing 333 Control information storage unit

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

Le problème décrit par la présente invention est de contribuer à l'amélioration d'une résistance aux problèmes et de la disponibilité pour un type de commande centralisée de réseau à l'aide d'un canal de transfert de données entre commutateurs, en tant que canal de commande. La solution selon l'invention porte sur un appareil de commande comprenant : une unité de mémorisation de topologie qui mémorise une relation de connexion entre des commutateurs connectés par un canal de transfert de données ; une unité de gestion de canal de commande qui gère les informations d'un canal de commande configuré à l'aide du canal de transfert de données entre les commutateurs ; une unité de commande de commutateur qui commande un groupe de commutateurs par le biais du canal de commande ; et une unité de reconfiguration de canal de commande qui modifie des chemins du canal de commande sur la base d'informations acquises à partir des commutateurs.
PCT/JP2014/051913 2013-01-30 2014-01-29 Appareil de commande, commutateur, système de communication, procédé de commande de commutateur et programme Ceased WO2014119602A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-015091 2013-01-30
JP2013015091 2013-01-30

Publications (1)

Publication Number Publication Date
WO2014119602A1 true WO2014119602A1 (fr) 2014-08-07

Family

ID=51262315

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/051913 Ceased WO2014119602A1 (fr) 2013-01-30 2014-01-29 Appareil de commande, commutateur, système de communication, procédé de commande de commutateur et programme

Country Status (1)

Country Link
WO (1) WO2014119602A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016117303A1 (fr) * 2015-01-19 2016-07-28 日本電気株式会社 Système de commande de communications, procédé de commande de communications et support d'enregistrement associé
WO2020027181A1 (fr) * 2018-08-01 2020-02-06 日本電気株式会社 Commutateur, dispositif de commande, système de communication, procédé de commande de communication et programme

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6281146A (ja) * 1985-10-03 1987-04-14 Nec Corp ネットワーク制御バス網構成方法
JP2012129864A (ja) * 2010-12-16 2012-07-05 Hitachi Ltd 通信システム及びユーザアクセス装置を制御する方法
WO2012101692A1 (fr) * 2011-01-28 2012-08-02 Nec Corporation Système de communication, dispositif relais d'informations de commande, dispositif de commande et procédé et programme de transmission d'informations de commande

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6281146A (ja) * 1985-10-03 1987-04-14 Nec Corp ネットワーク制御バス網構成方法
JP2012129864A (ja) * 2010-12-16 2012-07-05 Hitachi Ltd 通信システム及びユーザアクセス装置を制御する方法
WO2012101692A1 (fr) * 2011-01-28 2012-08-02 Nec Corporation Système de communication, dispositif relais d'informations de commande, dispositif de commande et procédé et programme de transmission d'informations de commande

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016117303A1 (fr) * 2015-01-19 2016-07-28 日本電気株式会社 Système de commande de communications, procédé de commande de communications et support d'enregistrement associé
RU2679555C1 (ru) * 2015-01-19 2019-02-11 Нек Корпорейшн Система управления связью, способ управления связью и носитель записи
US10462016B2 (en) 2015-01-19 2019-10-29 Nec Corporation Communication control system, communication control method, and recording medium
WO2020027181A1 (fr) * 2018-08-01 2020-02-06 日本電気株式会社 Commutateur, dispositif de commande, système de communication, procédé de commande de communication et programme
JPWO2020027181A1 (ja) * 2018-08-01 2021-08-02 日本電気株式会社 スイッチ、制御装置、通信システム、通信制御方法及びプログラム
JP7067623B2 (ja) 2018-08-01 2022-05-16 日本電気株式会社 スイッチ、制御装置、通信システム、通信制御方法及びプログラム
US11522815B2 (en) 2018-08-01 2022-12-06 Nec Corporation Switch, control apparatus, communication system, communication control method and program

Similar Documents

Publication Publication Date Title
JP6053003B2 (ja) 伝送システム、伝送装置、及び伝送方法
JP5494668B2 (ja) 情報システム、制御サーバ、仮想ネットワーク管理方法およびプログラム
JP5850068B2 (ja) 制御装置、通信システム、通信方法およびプログラム
JP5534037B2 (ja) 情報システム、制御装置、仮想ネットワークの提供方法およびプログラム
CN102714628B (zh) 通信系统、控制装置、处理规则设置方法和分组传输方法
EP2933979B1 (fr) Procédé et système de mise en oeuvre de réseau de commande basé sur dht et contrôleur de réseau
JP5994851B2 (ja) 転送装置の制御装置、転送装置の制御方法、通信システムおよびプログラム
US20150207675A1 (en) Path Control System, Control Apparatus, Edge Node, Path Control Method, And Program
WO2011087085A1 (fr) Calculateur, procédé de commutation de connexion réseau, et programme
JPWO2012050071A1 (ja) 通信システム、制御装置、処理規則の設定方法およびプログラム
WO2012090993A1 (fr) Système d'information, dispositif de commande, procédé et programme de communication
US20150256455A1 (en) Communication system, path information exchange apparatus, communication node, forwarding method for path information and program
WO2011118574A1 (fr) Système de communication, dispositif de contrôle, procédé de mesure de retard et programme
WO2012081721A1 (fr) Système de communication, noeud, procédé de transfert de paquets et programme
JP6206493B2 (ja) 制御装置、通信システム、中継装置の制御方法及びプログラム
JP5991385B2 (ja) 制御情報管理装置、制御情報提示方法及びプログラム
WO2014175335A1 (fr) Contrôleur, système informatique, procédé permettant de commander une communication, et programme
JPWO2014104277A1 (ja) 制御装置、通信システム、通信ノードの制御方法及びプログラム
JP6127569B2 (ja) スイッチ、制御装置、通信システム、制御チャネルの管理方法及びプログラム
JP5991427B2 (ja) 制御装置、通信システム、制御情報の送信方法及びプログラム
WO2014119602A1 (fr) Appareil de commande, commutateur, système de communication, procédé de commande de commutateur et programme
JP6314970B2 (ja) 通信システム、制御装置、通信方法およびプログラム
WO2014142081A1 (fr) Nœud de transfert, dispositif de commande, système de communication, procédé et programme de traitement de paquets
JP2016225933A (ja) 制御装置、中継装置の制御方法、プログラム及び通信システム
WO2014027687A1 (fr) Système de communication, dispositif d'enregistrement d'informations de commande, dispositif de commande, procédé et programme d'enregistrement d'informations de commande

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14745427

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14745427

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP