WO2014186986A1 - 流转发方法、设备及系统 - Google Patents

流转发方法、设备及系统 Download PDF

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Publication number
WO2014186986A1
WO2014186986A1 PCT/CN2013/076230 CN2013076230W WO2014186986A1 WO 2014186986 A1 WO2014186986 A1 WO 2014186986A1 CN 2013076230 W CN2013076230 W CN 2013076230W WO 2014186986 A1 WO2014186986 A1 WO 2014186986A1
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WIPO (PCT)
Prior art keywords
node
message
packet
border node
controller
Prior art date
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PCT/CN2013/076230
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English (en)
French (fr)
Inventor
刘恩慧
王歆平
林程勇
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2013/076230 priority Critical patent/WO2014186986A1/zh
Priority to EP13885393.2A priority patent/EP2993840B1/en
Priority to PCT/CN2013/081940 priority patent/WO2014187037A1/zh
Priority to CN201380025768.8A priority patent/CN104322023B/zh
Publication of WO2014186986A1 publication Critical patent/WO2014186986A1/zh
Priority to US14/949,575 priority patent/US10003540B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2416—Real-time traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/20—Traffic policing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2466—Traffic characterised by specific attributes, e.g. priority or QoS using signalling traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2475—Traffic characterised by specific attributes, e.g. priority or QoS for supporting traffic characterised by the type of applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2483—Traffic characterised by specific attributes, e.g. priority or QoS involving identification of individual flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/42—Centralised routing

Definitions

  • the present application relates to the field of communication networks, and in particular, to a stream forwarding method, device, and system.
  • the SDN/OpenFlow architecture is a new type of network architecture. Compared with the IP routing used by traditional networks, SDN/OpenFlow can flexibly control network traffic and provide a good platform for innovation of core networks and applications. The direction of network architecture development. However, traditional networks have the advantages of complete infrastructure and abundant resources. Therefore, it is of great significance to study the integration of SDN/OpenFlow and traditional networks.
  • SDN/OpenFlow has been born only a few years ago, and SDN/OpenFlow and SDN transition network (SDN Migration) Network) research is even more inadequate. Therefore, it has not been involved in the SDN transition network solution of SDN/OpenFlow and traditional network integration to ensure that ordinary users can use traditional services normally, and provide high-quality, refined stream forwarding for VIP users.
  • the intelligent routing service that is, the network path is adjusted to improve the quality of service on demand.
  • the service that needs to perform refined forwarding is called the intelligent routing service, and the service that does not need to perform refined forwarding is called ordinary service.
  • a quality-assured flow forwarding network path enables the network path to ensure that the user has sufficient bandwidth to watch the video.
  • the technical problem to be solved by the present application is to provide a stream forwarding method, device and system, which can implement refined stream forwarding services on an SDN transition network, adjust network paths as needed, and improve service quality.
  • the first aspect of the present application provides a flow forwarding method, and the method is applied to (SDN migration) Network)
  • the SDN transition network includes: the border node receiving the intelligent routing service request packet sent by the user side device, where the smart routing service request packet is used to request the service server to provide the intelligent routing service for the user side device,
  • the intelligent routing service request packet includes a constraint condition for establishing the intelligent routing service; if the border node does not find the matching flow entry corresponding to the feature information in the intelligent routing service request packet in the flow table, The corresponding matching flow entry includes the feature information, and the border node sends a first message to the controller, where the first message includes the feature information and identifier information of the boundary node; the boundary node An inbound or outbound node that receives the intelligent routing service request packet in the SDN transition network; the border node receives a first flow entry sent by the controller, where the first flow entry is The first message is generated and the constraint condition is met; the border node processes the
  • the first message includes the feature information and the identifier information of the border node, where the first message includes the The intelligent routing service request message and the identification information of the border node, where the intelligent routing service request message includes the feature information.
  • the first message further includes the intelligent routing service request packet.
  • the first message includes the feature information and the identifier information of the border node, where the first message includes the The mirroring packet of the intelligent routing service request packet and the identifier information of the border node, where the mirroring packet of the intelligent routing service request packet is a replica packet of the intelligent routing service request packet, where the smart The routing service request packet includes the feature information.
  • the method further includes: the border node sending the intelligent routing service request packet according to a traditional IP routing manner.
  • the first message further includes a mirroring packet of the intelligent routing service request packet, where the intelligent routing service request packet
  • the mirroring packet of the text is the replication packet of the intelligent routing service request packet
  • the method further includes: the border node sending the intelligent routing service request packet according to the traditional IP routing manner.
  • the first message further includes receiving the The interface attribute information of the interface of the intelligent routing service request packet, where the interface attribute information is used to identify that the border node is the inbound or outbound node of the intelligent routing service request message in the SDN transition network.
  • the method further includes: the boundary node Receiving a second message sent by the controller, where the second message includes the intelligent routing service request message; the border node sends the intelligent routing service request message according to a traditional IP routing manner.
  • the feature information includes at least the intelligent route
  • the following ones are in the service request packet: source address, destination address, source port, destination port, and protocol number.
  • the second aspect of the present application provides a flow forwarding method, where the method is applied to an SDN transition network, where the method includes: the border node receives a service packet sent by the user side device; The first flow entry corresponding to the feature information in the service packet is found in the table, where the first flow entry includes an action, and the action is used to send a message to the controller; the first flow entry is controlled by The device generates the first message according to the intelligent routing service request packet sent by the user side device, where the border node sends the first message, where the first message includes the feature information, the identifier information of the border node, and the receiving The interface attribute information of the interface of the service packet, where the interface attribute information is used to identify that the border node is an inbound boundary node or an outbound node of the service packet in the SDN transition network; a second flow entry sent by the controller, where the second flow entry meets a constraint condition in the intelligent routing service request packet; A second flow entry processing the service packet.
  • the first message includes the feature information, the identifier information of the border node, and the interface attribute information of the service packet.
  • the first message includes a mirrored packet of the service packet and the identifier information of the border node, where the mirrored packet of the service packet is a copy packet of the service packet,
  • the service packet includes the feature information.
  • the method further includes: the border node sending the service packet according to a traditional IP routing manner.
  • the first message further includes a mirroring packet of the service packet, where the mirrored packet of the service packet is
  • the method further includes: the border node sending the service packet according to a traditional IP routing manner.
  • the characteristic information includes at least the service request The following ones are in the packet: source address, destination address, source port, destination port, and protocol number.
  • the third aspect of the present application provides a flow forwarding method, where the method is applied to an SDN transition network, the method includes: the controller receives a first message sent by a first border node, where the first message includes The feature information of the packet sent by the user side device and the identifier information of the first border node; the controller receives the second message sent by the second border node, where the second message includes the feature information and the Identification information of the second border node; the controller determines that the first border node is an inbound node that receives the packet in the SDN transition network; and the second border node is in the SDN transition network Receiving an outbound node of the packet; the controller calculating, according to the identifier information of the first border node, the identifier information of the second border node and a policy control factor, the intelligent routing service flow corresponding to the feature information a flow forwarding path that is required to be passed; the controller generates a corresponding flow entry for each node on the flow forwarding path, and
  • the controller determines that the first boundary node is an inbound boundary And determining, by the controller, that the first boundary node is an inbound node and the second, according to a sequence of receiving the first message and the second message.
  • the boundary node is the outbound boundary node.
  • the first message further includes the first interface attribute information of the first interface that the first border node receives the packet, where The first interface attribute information is used to identify that the first border node is an ingress node of the packet in the SDN transition network; the second message further includes that the second border node receives the packet a second interface attribute information of the second interface, where the second interface attribute information is used to identify that the second border node is an outgoing node of the service packet in the SDN transition network; and the controller determines the first The boundary node is an inbound boundary node, and the second boundary node is an outbound boundary node, the method includes: the controller determining, according to the received first interface attribute information and the second interface attribute information, that the first boundary node is an inbound boundary The node and the second boundary node are outbound nodes.
  • the method further includes: when the packet is a service packet, the controller is configured to a first flow entry is sent by the first flow entry, the first flow entry includes an action, the action is used to send a message to the controller, and the first flow entry is used by the controller according to the The intelligent routing service request packet sent by the user side device is generated.
  • the method further includes: the controller receiving the policy The policy control factor and the feature information sent by the server.
  • the fourth aspect of the present application provides a flow forwarding system method, and the method is applied to (SDN migration) Network)
  • the SDN transition network includes the following steps: the first border node receives the intelligent routing service request packet sent by the user side device, and the smart routing service request packet is used to request the service server to provide the intelligent routing for the user side device.
  • the service, the intelligent routing service request packet includes a constraint condition for establishing the intelligent routing service; if the first border node does not find the feature information in the intelligent routing service request packet in the flow table, And matching the flow entry, the corresponding matching flow entry includes the feature information, and the first border node sends a first message to the controller, where the first message includes the feature information and the first The identifier information of the border node; the controller receives the first message sent by the first border node; the second border node receives the intelligent routing service request message sent by the user side device forwarded by the first border node; If the second border node does not find the corresponding information in the smart routing service request packet in the flow table a flow entry, the corresponding matching flow entry includes the feature information, and the second boundary node sends a second message to the controller, where the second message includes the feature information and the second boundary node The controller receives the second message sent by the second border node; the controller determines that the first border node is to receive an inbound boundary of the packet in the S
  • the fifth aspect of the present application provides a flow forwarding method, and the method is applied to (SDN migration) Network)
  • the SDN transition network includes the following steps: the first border node receives the service packet sent by the user equipment, and the first border node searches the flow table for the first stream corresponding to the feature information in the service packet.
  • the first border node sends a first message to the controller, where the first message includes the feature information, the identifier information of the border node, and interface attribute information of an interface that receives the service packet; the control Receiving the first message sent by the first border node; the second border node receiving the service message sent by the user side device forwarded by the first border node; the second border node finding the service report in the flow table a first flow entry corresponding to the feature information in the text, the first flow entry includes an action, the action is used to send a message to the controller; and the second boundary node is The controller sends a second message, where the second message includes the feature information, the identifier information of the border node, and interface attribute information of an interface that receives the service packet; the controller receives the second border node to send a second message; the controller determines that the first border node is an inbound node that receives the packet in the SDN transition network; and the second border node receives the in the SDN transition network An outbound node of the packet
  • the sixth aspect of the present application provides a hybrid forwarding device, where the device includes: a first receiving module, a lookup receiving module, a second receiving module, and a processing module, where the first receiving module is configured to receive a user.
  • An intelligent routing service request packet sent by the side device where the intelligent routing service request packet is used to request the service server to provide an intelligent routing service for the user side device, where the intelligent routing service request packet includes establishing the intelligent routing service.
  • the first receiving module sends the intelligent routing service request message to the search and receive module, and the search and receive module is configured to receive the smart routing service request message at the boundary.
  • the border node sends the feature node to the controller.
  • a first message the first message includes the feature information and identification information of the boundary node, the boundary section An inbound or outbound node that receives the intelligent routing service request packet in the SDN transition network;
  • the second receiving module is configured to receive a first flow entry sent by the controller, where the first flow And generating, by the second receiving module, the first flow entry to the processing module, where the processing module is configured to receive the first flow entry, And processing, according to the first flow entry, a packet sent by the user side device.
  • the first message includes the feature information and the identifier information of the border node, where the first message includes the The intelligent routing service request message and the identification information of the border node, where the intelligent routing service request message includes the feature information.
  • the first message further includes the intelligent routing service request packet.
  • the first message includes the feature information and the identifier information of the border node, where the first message includes the The mirroring packet of the intelligent routing service request packet and the identifier information of the border node, where the mirroring packet of the intelligent routing service request packet is a replica packet of the intelligent routing service request packet, where the smart The routing service request packet includes the feature information, and the processing module is further configured to send the smart routing service request packet according to the traditional IP routing manner.
  • the information that the first message includes the feature information and the identifier information of the border node is: the first message includes the The mirroring packet of the intelligent routing service request packet and the identifier information of the border node, where the mirroring packet of the intelligent routing service request packet is a replica packet of the intelligent routing service request packet, where the smart The routing service request packet includes the feature information, and the processing module is further configured to send, by the border node, the smart routing service request packet according to a traditional IP routing manner.
  • the interface attribute information of the interface of the intelligent routing service request packet where the interface attribute information is used to identify that the border node is the inbound or outbound node of the intelligent routing service request message in the SDN transition network.
  • the device further includes a third receiving module, The third receiving module receives the second message sent by the controller, where the second message includes the intelligent routing service request packet, and the processing module sends the intelligent routing service request packet according to the traditional IP routing manner. .
  • the feature information includes at least the intelligent route
  • the following ones are in the service request packet: source address, destination address, source port, destination port, and protocol number.
  • the seventh aspect of the present application provides a hybrid forwarding device, where the device includes: a first receiving module, a searching module, a sending module, a second receiving module, and a processing module, where the first receiving module is used to Receiving the service packet sent by the user equipment, the first receiving module sends the service packet to the searching module, and the searching module is configured to receive the service packet, and find the service packet in the flow table.
  • the intelligent routing service request packet sent by the device is generated; the searching module sends the search result to the sending module; the sending module is configured to receive the search result, and send a first message to the controller, where the first The message includes the feature information, the identifier information of the border node, and interface attribute information of an interface that receives the service packet, where the interface attribute information is used to identify
  • the boundary node is the inbound or outbound node of the service packet in the SDN transition network;
  • the second receiving module is configured to receive the second flow entry sent by the controller, the second flow The entry meets the constraint condition in the intelligent routing service request packet, the second receiving module sends the second flow entry to the processing module, and the processing module is configured to receive the second flow table. And processing, according to the second flow entry, the service packet.
  • the first message includes the feature information, the identifier information of the border node, and the interface attribute information of the service packet.
  • the first message includes a mirrored packet of the service packet and the identifier information of the border node, where the mirrored packet of the service packet is a copy packet of the service packet,
  • the service packet includes the feature information; the processing module is further configured to send, by the border node, the service packet according to a traditional IP routing manner.
  • the first message further includes a mirroring packet of the service packet, where the mirrored packet of the service packet is
  • the processing module is further configured to send the service packet according to a traditional IP routing manner.
  • the feature information includes at least the service request The following ones are in the packet: source address, destination address, source port, destination port, and protocol number.
  • the eighth aspect of the present application provides a controller, where the controller further includes: a receiving module, a determining module, a calculating module, and a sending module, where the receiving module is configured to receive the first node sent by the first border node.
  • the first message includes feature information of a message sent by the user side device, and identifier information of the first border node, and a second message sent by the second border node, where the second message includes the Feature information and identification information of the second border node, the receiving module, the first message and the second message are sent to the determining module;
  • the determining module is configured to determine that the first border node is in the Receiving, by the SDN transition network, an inbound node of the packet, where the second border node is an outbound node that receives the packet in the SDN transition network, and the determining module sends the determined result to the calculation
  • the module is configured to receive the result of the determining, and generate a corresponding flow entry for each node on the flow forwarding path.
  • the calculation module sends the flow entry to the sending module; the sending module is configured to receive the flow entry, and send the flow entry to a corresponding node, where the policy control factor is The constraint condition in the intelligent routing service request packet sent by the user side device is determined.
  • the determining module is further configured to: when the packet is the smart routing service request packet, receive the first The sequence of the message and the second message determines that the first boundary node is an inbound boundary node and the second boundary node is an outbound boundary node.
  • the first message further includes the first interface attribute information of the first interface that the first border node receives the packet, where The first interface attribute information is used to identify that the first border node is an ingress node of the packet in the SDN transition network; the second message further includes that the second border node receives the packet a second interface attribute information of the second interface, where the second interface attribute information is used to identify that the second border node is an outgoing node of the service packet in the SDN transition network; and the processing module is further configured to receive And determining, by the first interface attribute information and the second interface attribute information, that the first boundary node is an inbound boundary node and the second boundary node is an outbound boundary node.
  • the sending module is further configured to: when the packet is a service packet, to the a first flow entry is sent by the first flow entry, the first flow entry includes an action, the action is used to send a message to the controller, and the first flow entry is used by the controller according to the The intelligent routing service request packet sent by the user side device is generated.
  • the receiving module is further configured to receive the policy server and send The policy control factor and the feature information.
  • the ninth aspect of the present application provides a flow forwarding system, including a plurality of hybrid forwarding devices and a controller, wherein the topological connections between the multiple hybrid forwarding devices form an SDN transition network, which is located at the boundary of the SDN transition network.
  • the hybrid forwarding device is a border node, and the border node is capable of communicating with the controller, the border node includes a first border node and a second border node, and the first border node receives the intelligent routing service request report sent by the user side device.
  • the smart routing service request packet is used to request the service server to provide an intelligent routing service for the user side device, where the intelligent routing service request packet includes a constraint condition required for establishing the intelligent routing service;
  • the first boundary node does not find the matching flow entry corresponding to the feature information in the smart routing service request packet in the flow table, and the corresponding matching flow entry includes the feature information, and the first boundary
  • the node sends a first message to the controller, the first message including the feature information and the first side
  • the identifier information of the node the controller receives the first message sent by the first border node;
  • the second border node receives the intelligent routing service request message sent by the user side device forwarded by the first border node;
  • the second border node does not find the matching flow entry corresponding to the feature information in the smart routing service request packet in the flow table, and the corresponding matching flow entry includes the feature information
  • the second border node sends a second message to the controller, where the second message includes the feature information and the identifier information of the second
  • the tenth aspect of the present application provides a flow forwarding system, including a plurality of hybrid forwarding devices and a controller, wherein the topological connections between the plurality of hybrid forwarding devices form an SDN transition network, which is located at the boundary of the SDN transition network.
  • the hybrid forwarding device is a border node, and the border node is capable of communicating with the controller, the boundary node includes a first boundary node and a second boundary node, and the first boundary node receives a service packet sent by the user equipment.
  • the first boundary node searches the flow table for the first flow entry corresponding to the feature information in the service packet, where the first flow entry includes an action, and the action is used to send a message to the controller;
  • the first flow entry is generated by the controller according to the intelligent routing service request message sent by the user side device;
  • the first border node sends a first message to the controller, where the first message includes the feature information,
  • the controller receives the first border node a first message;
  • the second border node receives the service packet sent by the user equipment that is forwarded by the first border node; and the second border node searches for the feature information in the service packet in the flow table.
  • the first flow entry includes an action, the action is used to send a message to the controller;
  • the second border node sends a second message to the controller, where the second message includes the feature The information, the identifier information of the border node, and the interface attribute information of the interface that receives the service packet;
  • the controller receives the second message sent by the second border node;
  • the controller determines that the first border node is Receiving an inbound node of the packet in the SDN transition network;
  • the second border node is an outbound node that receives the packet in the SDN transition network;
  • the controller is according to the first The identification information of the boundary node, the identification information of the second boundary node, and the policy control factor, and the flow forwarding path that the intelligent routing service flow corresponding to the feature information needs to pass;
  • the eleventh aspect of the present application provides a hybrid forwarding device, where the device includes: a receiver, a processor, and a transmitter, where the receiver is configured to receive an intelligent routing service request packet sent by the user side device.
  • the intelligent routing service request packet is used to request the service server to provide an intelligent routing service for the user side device, where the intelligent routing service request packet includes a constraint condition required for establishing the intelligent routing service;
  • the border node does not find the matching flow entry corresponding to the feature information in the smart routing service request packet in the flow table, the corresponding matching flow entry includes the feature information, and the sending
  • the device is configured to send a first message to the controller, where the first message includes the feature information and the identifier information of the border node, where the border node is configured to receive the smart routing service request message in the SDN transition network.
  • the ingress node or the outbound node; the receiver is further configured to receive the first flow entry sent by the controller, the first Entry and satisfies the constraint condition generated according to the first message; and a processor for processing in accordance with the first flow table entry sent from the user side device packets.
  • the first message includes the feature information and the identifier information of the border node, where the first message includes: The intelligent routing service request message and the identification information of the border node, where the intelligent routing service request message includes the feature information.
  • the first message further includes the smart routing service request message.
  • the first message includes the feature information and the identifier information of the border node, where the first message includes: The mirroring packet of the intelligent routing service request packet and the identifier information of the border node, where the mirroring packet of the intelligent routing service request packet is a replica packet of the intelligent routing service request packet,
  • the intelligent routing service request message includes the feature information; the processor is further configured to send the intelligent routing service request message according to a traditional IP routing manner.
  • the first message includes the feature information and the identifier information of the border node, where the first message includes: The mirroring packet of the intelligent routing service request packet and the identifier information of the border node, where the mirroring packet of the intelligent routing service request packet is a replica packet of the intelligent routing service request packet,
  • the intelligent routing service request message includes the feature information; the processor is further configured to send, by the border node, the intelligent routing service request message according to a traditional IP routing manner.
  • the first message further includes receiving The interface attribute information of the interface of the intelligent routing service request packet, where the interface attribute information is used to identify that the border node is the inbound or outbound node of the intelligent routing service request packet in the SDN transition network. .
  • the receiver is further used to Receiving a second message sent by the controller, where the second message includes the intelligent routing service request message; the processor sends the intelligent routing service request message according to a traditional IP routing manner.
  • the characteristic information includes at least The following one of the intelligent routing service request packets: source address, destination address, source port, destination port, and protocol number.
  • the twelfth aspect of the present application provides a hybrid forwarding device, where the device includes: a receiver, a processor, and a transmitter, where the receiver is configured to receive a service packet sent by the user side device;
  • the processor is configured to receive the service packet, and find, in the flow table, a first flow entry corresponding to the feature information in the service packet, where the first flow entry includes an action, and the action is used to perform the control
  • the first flow entry is generated by the controller according to the intelligent routing service request message sent by the user side device;
  • the sender is configured to send a first message to the controller, where the first message includes The feature information, the identifier information of the border node, and the interface attribute information of the interface that receives the service packet, where the interface attribute information is used to identify that the border node is the service packet in the SDN transition network.
  • the receiver is further configured to receive a second flow entry sent by the controller, where the second flow entry meets the intelligent routing service
  • the first message includes the feature information, the identifier information of the border node, and an interface attribute of receiving the service packet.
  • the information is specifically: the first message includes a mirrored packet of the service packet and the identifier information of the border node, where the mirrored packet of the service packet is a copy packet of the service packet,
  • the service packet includes the feature information; the processor is further configured to send, by the border node, the service packet according to a traditional IP routing manner.
  • the first message further includes a mirrored packet of the service packet, where the service packet is a mirrored packet.
  • the processor is further configured to send the service packet according to the traditional IP routing manner.
  • the feature information includes at least The following one of the service request messages: a source address, a destination address, a source port, a destination port, and a protocol number.
  • the thirteenth aspect of the present application provides a controller, the controller further includes: a receiver, a processor, and a transmitter, the receiver is configured to receive the first message sent by the first border node, The first message includes the feature information of the packet sent by the user side device and the identifier information of the first border node, and receives the second message sent by the second border node, where the second message includes the feature information and The identifier information of the second border node; the processor is configured to determine that the first border node is an inbound border node that receives the packet in the SDN transition network, and the second border node is in the Receiving, by the SDN transition network, an outbound node of the packet, where the processor is further configured to generate a corresponding flow entry for each node on the flow forwarding path, where the transmitter is configured to: The flow entry is sent to the corresponding node, where the policy control factor is determined according to the constraint condition in the intelligent routing service request packet sent by the user side device.
  • the processor is further configured to: when the message is the smart routing service request message, according to the received The sequence of the first message and the second message determines that the first boundary node is an inbound boundary node and the second boundary node is an outbound boundary node.
  • the first message further includes that the first border node receives the first interface attribute information of the first interface of the packet
  • the first interface attribute information is used to identify that the first border node is an ingress node of the packet in the SDN transition network
  • the second message further includes that the second border node receives the packet
  • the second interface attribute information of the second interface is used to identify that the second border node is the egress node of the service packet in the SDN transition network
  • the processor is further used to And determining, according to the received first interface attribute information and the second interface attribute information, that the first boundary node is an inbound boundary node and the second boundary node is an outbound boundary node.
  • the transmitter is further configured to: when the packet is a service packet, The first boundary node and the second boundary node respectively send a first flow entry, the first flow entry includes an action, the action is used to send a message to the controller; the first flow entry is controlled by a controller And generated according to the intelligent routing service request packet sent by the user side device.
  • the receiver is further configured to receive a policy The policy control factor and the feature information sent by the server.
  • the fourteenth aspect of the present application provides a flow forwarding method, where the method is applied to an SDN transition network, the method includes: the border node receives a service packet sent by the user side device; The first flow entry corresponding to the feature information in the service packet is found in the flow table, where the first flow entry includes an action, and the action is used to send a message to the controller; The controller generates the first message according to the preset intelligent routing service object; the border node sends a first message to the controller, where the first message includes the feature information, the identifier information of the border node, and the receiving the service packet Interface attribute information of the interface, the interface attribute information is used to identify that the border node is an inbound node or an outbound node of the service packet in the SDN transition network; and the border node receives the controller to send The second flow entry, the second flow entry meets a constraint condition in the intelligent routing service request packet sent by the user side device; the boundary node According to the process the second stream entry packet traffic
  • the first message includes the feature information, the identifier information of the border node, and an interface attribute of receiving the service packet.
  • the information is specifically: the first message includes a mirrored packet of the service packet and the identifier information of the border node, where the mirrored packet of the service packet is a copy packet of the service packet,
  • the service packet includes the feature information.
  • the method further includes: the border node sending the service packet according to a traditional IP routing manner.
  • the first message further includes a mirroring packet of the service packet, where the service packet is a mirrored packet
  • the method further includes: sending the service packet according to a traditional IP routing manner.
  • the characteristic information includes at least The following one of the service request messages: a source address, a destination address, a source port, a destination port, and a protocol number.
  • the fifteenth aspect of the present application provides a hybrid forwarding device, where the device includes: a first receiving module, a searching module, a sending module, a second receiving module, and a processing module, where the first receiving module is used.
  • the first receiving module receives the service packet sent by the user equipment
  • the first receiving module sends the service packet to the searching module
  • the searching module is configured to receive the service packet, and find the location in the flow table.
  • the first flow entry corresponding to the feature information in the service packet, where the first flow entry includes an action, and the action is used to send a message to the controller; the first flow entry is preset by the controller according to the controller
  • the intelligent routing service object is generated; the searching module sends the search result to the sending module; the sending module is configured to receive the search result, and send a first message to the controller, where the first message includes the feature Information, identifier information of the border node, and interface attribute information of an interface that receives the service packet, where the interface attribute information is used to identify the border node
  • the service packet is in the inbound or outbound node of the SDN transition network; the second receiving module is configured to receive the second flow entry sent by the controller, where the second flow entry satisfies a constraint condition in the intelligent routing service request packet sent by the user side device, where the second receiving module sends the second flow entry to the processing module; the processing module is configured to receive the second flow An entry, where the service packet is processed according to the second flow entry.
  • the first message includes the feature information, the identifier information of the border node, and an interface attribute of receiving the service packet.
  • the information is specifically: the first message includes a mirrored packet of the service packet and the identifier information of the border node, where the mirrored packet of the service packet is a copy packet of the service packet,
  • the service packet includes the feature information; the processing module is further configured to send, by the border node, the service packet according to a traditional IP routing manner.
  • the first message further includes a mirrored packet of the service packet, where the service packet is a mirrored packet
  • the processing module is further configured to send the service packet according to the traditional IP routing manner.
  • the characteristic information at least includes The following one of the service request messages: a source address, a destination address, a source port, a destination port, and a protocol number.
  • the sixteenth aspect of the present application provides a hybrid forwarding device, where the device includes: a receiver, a processor, and a transmitter, where the receiver is configured to receive a service packet sent by the user side device;
  • the processor is configured to receive the service packet, and find, in the flow table, a first flow entry corresponding to the feature information in the service packet, where the first flow entry includes an action, and the action is used to perform the control Transmitting a message;
  • the first flow entry is generated by the controller according to a preset intelligent routing service object;
  • the sender is configured to send a first message to the controller, where the first message includes the feature information, the The identifier information of the border node and the interface attribute information of the interface that receives the service packet, where the interface attribute information is used to identify that the border node is an inbound boundary node or an outbound boundary of the service packet in the SDN transition network.
  • the receiver is further configured to receive a second flow entry sent by the controller, where the second flow entry meets an
  • the first message includes the feature information, the identifier information of the border node, and an interface attribute of receiving the service packet.
  • the information is specifically: the first message includes a mirrored packet of the service packet and the identifier information of the border node, where the mirrored packet of the service packet is a copy packet of the service packet,
  • the service packet includes the feature information; the processor is further configured to send, by the border node, the service packet according to a traditional IP routing manner.
  • the first message further includes a mirrored packet of the service packet, where the service packet is a mirrored packet.
  • the processor is further configured to send the service packet according to the traditional IP routing manner.
  • the characteristic information includes at least The following one of the service request messages: a source address, a destination address, a source port, a destination port, and a protocol number.
  • the controller creatively proposes a method for calculating an intelligent routing service flow forwarding path according to the identification information of the first boundary node, the identification information of the second boundary node, and the policy control factor, and the traditional manner of searching the IP routing table is forwarded.
  • the stream forwarding method of finding high-quality service guarantee flow table it does not affect the traditional IP forwarding, guarantees the reliability of the network, and provides high-quality stream forwarding service for VIP customers.
  • the innovative method implements the refined stream forwarding service on the SDN transition network, adjusts the network path and improves the quality of service as needed, and fills the gap in the field.
  • FIG. 1 is a schematic structural diagram of an embodiment of a flow forwarding system of the present application.
  • FIG. 2 is a schematic diagram of an implementation manner of implementing an intelligent routing service by using the flow forwarding system shown in FIG. 1;
  • FIG. 3 is a schematic diagram of another implementation manner of implementing an intelligent routing service by using the flow forwarding system shown in FIG. 1;
  • FIG. 4 is a schematic diagram of still another implementation manner of implementing an intelligent routing service by using the flow forwarding system shown in FIG. 1;
  • FIG. 5 is a schematic diagram of still another implementation manner of implementing an intelligent routing service by using the flow forwarding system shown in FIG. 1;
  • FIG. 6 is a flowchart of an embodiment of a flow forwarding method of the present application.
  • FIG. 7 is a flowchart of another embodiment of a flow forwarding method of the present application.
  • FIG. 8 is a flowchart of still another embodiment of a stream forwarding method of the present application.
  • FIG. 9 is a schematic structural diagram of an embodiment of a hybrid forwarding device according to the present application.
  • FIG. 10 is a schematic structural diagram of another embodiment of a hybrid forwarding device according to the present application.
  • FIG. 11 is a schematic structural diagram of an embodiment of a controller of the present application.
  • FIG. 12 is a schematic structural diagram of still another embodiment of a hybrid forwarding device according to the present application.
  • FIG. 13 is a schematic structural diagram of still another embodiment of a hybrid forwarding device according to the present application.
  • FIG. 14 is a schematic structural diagram of another embodiment of a controller of the present application.
  • FIG. 1 is a schematic structural diagram of an embodiment of a flow forwarding system according to the present application.
  • the flow forwarding system of the present embodiment is used in an SDN transition network, and includes an SDN transition network 120 composed of a user terminal 110, a plurality of hybrid forwarding devices 121, and an application server 130, a policy server 140, and a controller 150.
  • the hybrid forwarding device 121 can implement the IP routing and forwarding function of the traditional network, and can also implement the flow forwarding function of the SDN/OpenFlow network.
  • the external connection port of the hybrid forwarding device 121 is used to connect to devices outside the SDN transition network 120.
  • the internal connection port of the hybrid forwarding device 121 is used to connect with other hybrid forwarding devices 121 inside the SDN transition network 120.
  • the hybrid forwarding device 121 located at the boundary of the SDN transition network 120 is a border node.
  • the client 110 is directly connected to the outer connection port of one of the border nodes of the SDN transition network 120.
  • the plurality of hybrid forwarding devices 121 in the SDN transition network 120 are connected through the internal interface topology, and another boundary node of the SDN transition network 120 passes through
  • the external connector is directly connected to the application server 130.
  • the application server 130 is connected to the policy server 140, and the policy server 140 is connected to the controller 150.
  • the controller 150 is connected to any one of the hybrid forwarding devices 121 in the SDN transition network 120.
  • FIG. 2 is a schematic diagram of an implementation manner of implementing an intelligent routing service by using the flow forwarding system shown in FIG. 1.
  • the boundary node when the external connection port of the border node is set to not match the matching flow entry corresponding to the feature information in the intelligent routing service request packet, the boundary node sends the first message to the controller.
  • the message includes the feature information and the identification information of the boundary node; the internal connection port of the boundary node is set to not send the feature information of the intelligent routing service request message to the controller even if the feature information is not found in the flow table.
  • the feature information includes at least one of the following: the source address, the destination address, the source port, the destination port, and the protocol number.
  • the first message encapsulates the intelligent routing service request message and the identification information of the border node, and the feature information is included in the intelligent routing service request message.
  • the first message may be encapsulated with the intelligent routing service request packet, the feature information of the intelligent routing service request packet, and the identifier information of the border node.
  • the first message may further include interface attribute information of the interface that receives the intelligent routing service request message, where the interface attribute information is used to identify that the border node is an inbound boundary node or an outbound node of the SDN transition network.
  • the smart routing service request packet is received from the external interface, and the interface attribute information is that the packet is an uplink boundary node, and the intelligent routing service request packet is sent from the external interface, and the interface attribute information is the packet.
  • the boundary node that is the downlink is the second boundary node.
  • the controller may determine that the first boundary node is an inbound boundary node and the second boundary node is an outbound node according to a sequence of received messages.
  • the feature information of the data stream is stored in the flow table of the first boundary node and the second boundary node, so the first boundary The node and the second border node will not send the intelligent routing service message to the controller 150.
  • a certain data stream including an intelligent routing service flow and a normal service flow
  • the feature information of the newly initiated data flow, the first boundary node and the second boundary are not stored in the first boundary node and the second boundary node.
  • the node sends the service request message of the data stream to the controller 150.
  • the service packet generated when the client 110 performs the normal service is sent to the SDN transition network 120 through the external interface of the border node directly connected to the client 110.
  • the service packet is forwarded by the internal network of the hybrid forwarding device 121 and sent to the border node directly connected to the application server 130.
  • the border node directly connected to the application server 130 is then sent to the application server 130 through the external connection port.
  • the client 110 sends an intelligent routing service request to the application server 130, and generates an intelligent routing service request message, where the smart routing service request message is generated, as shown by the dotted line formed by the dotted line in the figure.
  • the service request packet is used to request the service server to provide the intelligent routing service for the user side device.
  • the intelligent routing service request packet includes the feature information and the constraints required for establishing the intelligent routing service, for example, the bandwidth required by the client 110, and the like. .
  • the intelligent routing service request message generated by the client 110 is sent to the border node directly connected to the client terminal 110 through the external connection port.
  • the boundary node directly connected to the client terminal 110 is the first boundary node.
  • the feature information of the intelligent routing service request packet is not recorded in the flow table of the first border node at this time. Therefore, according to the initial configuration, if the border node does not find the feature in the intelligent routing service request packet in the flow table, The matching flow entry corresponding to the information, the border node sends a first message to the controller.
  • the first border node knows that this is a data flow for newly proposing an intelligent routing service request, and the first border node routes the intelligent routing service request message.
  • the first message is encapsulated and sent to the controller 150.
  • the first message includes an intelligent routing service request packet and the identifier information of the first border node, and the smart routing service request packet includes the feature information of the intelligent routing service request packet.
  • the controller 150 After receiving the first message, the controller 150 reads the feature information of the intelligent routing service request message and the identification information of the first border node from the first message. Then, the controller 150 encapsulates the intelligent routing service request message into the second message and returns it to the first border node.
  • the intelligent routing service request packet is forwarded according to the traditional forwarding manner of the IP routing table, and is forwarded through the internal connection ports of the multiple hybrid forwarding devices 121, and sent to In the boundary node directly connected to the application server 130.
  • the boundary node directly connected to the application server 130 is the second boundary node.
  • the border node sends a first message to the controller.
  • the second border node knows that this is a data flow that newly proposes an intelligent routing service request, and the second border node encapsulates the intelligent routing service request packet.
  • the first message is sent to the controller 150.
  • the first message includes an intelligent routing service request packet and the identifier information of the second border node, and the smart routing service request packet includes the feature information of the intelligent routing service request packet.
  • the controller 150 After receiving the first message, the controller 150 reads the feature information of the intelligent routing service request message and the identification information of the second border node from the first message. Then, the controller 150 encapsulates the intelligent routing service request message into the second message and returns it to the second border node.
  • the second border node After receiving the second message, the second border node sends the intelligent routing service request packet to the application server 130 through the external connection port.
  • the application server 130 After receiving the intelligent routing service request message, the application server 130 knows that the user terminal 110 has made an intelligent routing service request, and obtains the constraint condition for establishing the intelligent routing service from the intelligent routing service request message. Therefore, the application server 130 sends the constraint required by the client 110 to establish an intelligent routing service to the policy server 140.
  • the policy server 140 generates a policy control factor according to the constraint conditions required for establishing the intelligent routing service, and encapsulates the feature information of the intelligent routing service request message and the policy control factor into the control policy, and then sends the control policy to the controller 150.
  • the controller 150 After receiving the control policy, the controller 150 reads out the feature information of the intelligent routing service request message and the policy control factor, and locally finds the first boundary node associated with the feature information according to the feature information of the intelligent routing service request message. Identification information and identification information of the second boundary node.
  • the controller 150 has previously received the topology connection diagram of the hybrid forwarding device 121 in the SDN transition network 120 by means of IGP protocol listening or the like.
  • the controller 150 calculates the intelligent routing service flow that meets the requirements of the client 110 according to the interface information of the first border node, the interface information of the second border node, the policy control factor, and the topology connection diagram of the hybrid forwarding device 121 in the SDN transition network 120.
  • the sending path generates a corresponding first flow entry for each node on the intelligent routing service flow forwarding path, and sends the first flow entry to each node separately.
  • the intelligent routing service flow forwarding path After the intelligent routing service flow forwarding path is generated, as shown by the dotted line in the figure, the subsequent service packets sent by the user 110 are forwarded according to the intelligent routing service flow forwarding path after entering the SDN transition network 120. Finally, the application server 130 is reached, thereby completing the transmission of data.
  • the time for the UE 110 to determine the intelligent routing service flow forwarding path from the request for the intelligent routing service request to the controller 150 is short, but since the first boundary node and the second boundary node are set to When there is no feature information of the data flow in the flow table, the hybrid forwarding device sends the intelligent routing service request message received through the external connection port to the controller 150, and then returns the intelligent routing service request message to the first The boundary node and the second boundary node continue to transmit to the server 130.
  • the controller 150 cannot return the intelligent routing service request message to the first border node and the second border node, and the first border node and the second border node cannot continue to send the intelligent routing service request message to The application server 130 sends, so that the intelligent routing service request message cannot reach the application server 130.
  • the newly initiated intelligent routing service is affected because the feature information is not recorded in the flow table, but the newly initiated normal service is also affected because the feature information is not recorded in the flow table.
  • FIG. 3 is a schematic diagram of another implementation manner of implementing intelligent routing service by using the flow forwarding system shown in FIG. 1.
  • the boundary node when the external connection port of the border node is set to not match the matching flow entry corresponding to the feature information in the intelligent routing service request packet, the boundary node sends the first message to the controller.
  • the message includes the feature information and the identification information of the boundary node; the internal connection port of the boundary node is set to not send the feature information of the intelligent routing service request message to the controller even if the feature information is not found in the flow table.
  • the feature information includes at least one of the following: the source address, the destination address, the source port, the destination port, and the protocol number.
  • the first message encapsulates the mirrored packet of the intelligent routing service request packet and the identifier information of the border node, and the intelligent routing service request packet includes the feature information, so the mirrored message also includes the feature information.
  • the first message may be encapsulated with the mirrored message, the feature information, and the identifier information of the border node.
  • the first message may further include interface attribute information of the interface that receives the intelligent routing service message, where the interface attribute information is used to identify that the border node is an inbound or outbound node of the intelligent routing service message in the SDN transition network.
  • the smart routing service request packet is received from the external interface, and the interface attribute information is that the packet is an uplink boundary node, and the intelligent routing service request packet is sent from the external interface, and the interface attribute information is the packet.
  • the boundary node that is the downlink is the second boundary node.
  • the controller may determine that the first boundary node is an inbound boundary node and the second boundary node is an outbound node according to a sequence of received messages.
  • the feature information of the data stream is stored in the flow table of the first boundary node and the second boundary node, so the first boundary The node and the second border node will not send the mirrored message to the controller 150.
  • a certain data stream including an intelligent routing service flow and a normal service flow
  • the feature information of the newly initiated data flow, the first boundary node and the second boundary are not stored in the first boundary node and the second boundary node.
  • the node sends the mirrored message of the data stream to the controller 150.
  • the service packet generated when the client 110 performs the normal service is sent to the SDN transition network 120 through the external interface of the border node directly connected to the client 110.
  • the service packet is forwarded by the internal network of the hybrid forwarding device 121 and sent to the border node directly connected to the application server 130.
  • the border node directly connected to the application server 130 is then sent to the application server 130 through the external connection port.
  • the client 110 sends an intelligent routing service request to the application server 130, and generates an intelligent routing service request message, where the smart routing service request message is generated, as shown by the dotted line formed by the dotted line in the figure.
  • the service request packet is used to request the service server to provide the intelligent routing service for the user side device.
  • the intelligent routing service request packet includes the feature information and the constraints required for establishing the intelligent routing service, for example, the bandwidth required by the client 110, and the like. .
  • the intelligent routing service request message generated by the client 110 is sent to the border node directly connected to the client terminal 110 through the external connection port.
  • the boundary node directly connected to the client terminal 110 is the first boundary node.
  • the feature information of the intelligent routing service request packet is not recorded in the flow table of the first border node at this time. Therefore, according to the initial configuration, if the border node does not find the feature in the intelligent routing service request packet in the flow table, The matching flow entry corresponding to the information, the border node sends a first message to the controller.
  • the first border node knows that this is a data flow for newly proposing an intelligent routing service request, and the first border node routes the intelligent routing service request message.
  • the image is mirrored to obtain the mirrored packet, that is, the mirrored packet of the intelligent routing service request packet is the copy packet of the intelligent routing service request packet, and then the mirrored packet is encapsulated into the first message and sent to the controller 150.
  • the first message includes the mirrored packet and the identifier information of the first border node, and the smart routing service request packet includes the feature information of the intelligent routing service request packet. Therefore, the mirrored packet also includes the feature information.
  • the controller 150 reads the feature information and the identification information of the first boundary node from the first message.
  • the original intelligent routing service request message (the mirrored intelligent routing service request message) is not encapsulated in the first message and sent to the controller 150, but continues to be sent to the application server 130.
  • the intelligent routing service request packet is forwarded according to the traditional forwarding manner of the IP routing table, and is forwarded through the internal connection ports of the multiple hybrid forwarding devices 121, and sent to In the boundary node directly connected to the application server 130.
  • the boundary node directly connected to the application server 130 is the second boundary node.
  • the border node sends a first message to the controller.
  • the second border node knows that this is a data flow that newly proposes an intelligent routing service request, and the second border node mirrors the intelligent routing service request packet.
  • the mirrored packet is obtained, that is, the mirrored packet of the intelligent routing service request packet is a copy packet of the intelligent routing service request packet, and then the mirrored packet is encapsulated into the first message and sent to the controller 150.
  • the first message includes the mirrored message and the identifier information of the second border node, and the smart routing service request packet includes the feature information of the intelligent routing service request packet, so the mirrored message also includes the feature information.
  • the controller 150 After receiving the first message, the controller 150 reads the feature information and the identification information of the second border node from the first message.
  • the original intelligent routing service request message is not encapsulated in the first message and sent to the controller 150, but continues to be sent to the application server 130 through the external interface of the second border node.
  • the application server 130 knows that the user terminal 110 has made an intelligent routing service request, and obtains the constraint condition for establishing the intelligent routing service from the intelligent routing service request message.
  • the application server 130 sends the constraint required to establish the intelligent routing service to the policy server 140.
  • the policy server 140 parses out the constraints required to establish the intelligent routing service and generates a policy control factor, and encapsulates the feature information of the intelligent routing service flow and the policy control factor into the control policy, and then sends the control policy to the controller 150.
  • the controller 150 reads out the constraint condition and the policy control factor required for establishing the intelligent routing service, and locally finds the identifier of the first border node associated with the feature information according to the feature information of the intelligent routing service flow. Information and identification information of the second boundary node.
  • the controller 150 has previously received the topology connection diagram of the hybrid forwarding device 121 in the SDN transition network 120 by means of IGP protocol listening or the like.
  • the controller 150 calculates the intelligent routing service flow that meets the requirements of the client 110 according to the identifier information of the first border node, the identifier information of the second border node, the policy control factor, and the topology connection diagram of the hybrid forwarding device 121 in the SDN transition network 120.
  • the sending path generates a corresponding first flow entry for each node on the intelligent routing service flow forwarding path, and sends the first flow entry to each node separately.
  • the subsequent intelligent routing service packet sent by the client 110 enters the SDN transition network 120 and follows the intelligent routing service flow forwarding path. The forwarding is performed and finally reaches the application server 130, thereby completing the transmission of the data.
  • this embodiment overcomes the previous embodiment. If the controller 150 has a problem, the controller 150 cannot return the intelligent routing service request message to the first border node and the second border node to continue transmission to the application server. At 130 o'clock, not only the newly initiated intelligent routing service will be affected, but also the newly initiated ordinary service will be affected. However, in this embodiment, the newly initiated intelligent routing service request message and the normal service request message must be mirrored to the controller 150, so that the burden on the controller 150 is relatively heavy.
  • FIG. 4 is a schematic diagram of still another implementation manner of implementing an intelligent routing service by using the flow forwarding system shown in FIG. 1.
  • the controller sends the first flow entry to the hybrid forwarding device 121 as needed, where the first flow entry includes feature information and an action of the object that needs to perform the intelligent routing service, and the action is used to perform the control.
  • the device sends a message, so that the data stream having the feature information of the object that needs to perform the intelligent routing service enters the boundary node, and then uses the feature information as an index to search the flow table. If the matching flow entry is found, the packet is replaced by the traditional IP route. In addition to mode forwarding, an additional message is mirrored.
  • the service packet generated when the client 110 performs the normal service is sent to the SDN transition network 120 through the external interface of the border node directly connected to the client 110.
  • the service packets are forwarded according to the traditional lookup mode of the IP routing table, and are forwarded through the internal connection ports of the multiple hybrid forwarding devices 121, and sent to the border nodes directly connected to the application server 130.
  • the border node directly connected to the application server 130 is then sent to the application server 130 through the external connection port.
  • the client 110 sends an intelligent routing service request to the application server 130, and generates an intelligent routing service request packet, where the smart routing service request is generated, as shown by the dotted line formed by the dot in the figure.
  • the packet is used to request the service server to provide the intelligent routing service for the user-side device.
  • the intelligent routing service request packet includes the feature information and the constraints required for establishing the intelligent routing service, for example, the bandwidth required by the client 110 and the like.
  • the intelligent routing service request message generated by the client 110 is sent to a border node directly connected to the client terminal 110. Since the feature information of the intelligent routing service request packet is not recorded in the flow table of the border node that is directly connected to the user terminal 110, the border node directly connected to the user terminal 110 presses the intelligent routing service request packet according to the traditional The forwarding manner of the IP routing table is searched and forwarded through the internal interface of the plurality of hybrid forwarding devices 121, and sent to the border node directly connected to the application server 130. The border node directly connected to the application server 130 is then sent to the application server 130 through the external connection port.
  • the application server 130 After receiving the intelligent routing service request packet, the application server 130 knows that the user terminal 110 has made an intelligent routing service request, and obtains the feature information of the intelligent routing service request packet from the intelligent routing service request packet and establishes an intelligent routing service. The required constraints. Therefore, the application server 130 sends the constraints required to establish an intelligent routing service to the policy server 140.
  • the policy server 140 parses out the constraint conditions required for establishing the intelligent routing service and generates a policy control factor, and encapsulates the feature information of the intelligent routing service request message and the policy control factor into the control policy, and then sends the control policy to the controller 150. .
  • the controller 150 records the feature information of the intelligent routing service request message in the first flow table, and sends the first flow table to all the hybrid forwarding devices 121 respectively.
  • the UE 110 continues to send the intelligent routing service packet to the application server 130, as shown by the dotted line formed by the dotted line in the figure, and the intelligent routing service packet is sent to the border node directly connected to the client 110. .
  • the boundary node that is directly connected to the user terminal 110 has received the first flow table, and the feature information of the intelligent routing service packet is recorded in the first flow entry. Therefore, the boundary node directly connected to the client 110 associates the smart node.
  • the routing service packet is mirrored to obtain a mirrored packet, and the mirrored packet is encapsulated into the first message and sent to the controller 150.
  • the first message includes the mirrored packet, the identifier information of the border node, and the interface attribute information of the interface that receives the intelligent routing service packet, and the mirrored packet includes the feature information of the intelligent routing service packet.
  • the interface attribute information is used to identify that the border node is an inbound boundary node or an outbound node of the intelligent routing service packet in the SDN transition network.
  • the first message may include the feature information, the mirrored message, the identification information of the border node, and the interface attribute information of the interface that receives the service message.
  • the controller 150 After receiving the first message, the controller 150 reads the feature information of the intelligent routing service request message and the identity information of the border node from the first message; meanwhile, on the other hand, the intelligent routing service packet is in accordance with the traditional IP routing mode. Forwarding to continue to send to the application server 130. Since the intelligent routing service flow forwarding path has not been obtained at this time, the intelligent routing service packet is forwarded according to the traditional lookup manner of the IP routing table, and is forwarded through the internal connection ports of the multiple hybrid forwarding devices 121, and sent to and The application server 130 is directly connected to the boundary node.
  • the boundary node that is directly connected to the application server 130 has received the first flow table, and the feature information of the intelligent routing service packet is recorded in the first flow entry, so the boundary node directly connected to the application server 130 will
  • the intelligent routing service packet is mirrored to obtain a mirrored packet, and the mirrored packet is encapsulated into a first message and sent to the controller 150.
  • the first message includes the mirrored packet, the identifier information of the border node, and the interface attribute information of the interface that receives the service packet, and the mirrored packet includes the feature information of the intelligent routing service packet.
  • the original intelligent routing service packet is forwarded according to the traditional IP routing manner to continue to be sent to the application server 130 through the external connection port of the border node directly connected to the application server 130.
  • the first message may include the feature information, the mirrored message, the identification information of the border node, and the interface attribute information of the interface that receives the service message.
  • the controller 150 reads the feature information of the intelligent routing service packet, the identifier information of the second border node, and the interface attribute information of the interface that receives the service packet from the first message.
  • the first boundary node and the second boundary node are determined according to the interface attribute information.
  • the smart routing service request packet is received from the external connection port
  • the interface attribute information is that the packet is an uplink boundary node
  • the intelligent routing service request packet is sent from the external interface
  • the interface attribute information is The message is that the boundary node of the downlink is the second boundary node.
  • the boundary node directly connected to the client terminal 110 is the first boundary node
  • the boundary node directly connected to the application server 130 is the second boundary node.
  • the controller may determine that the first boundary node is an inbound boundary node and the second boundary node is an outbound node according to a sequence of received messages.
  • the controller 150 locally searches for the identification information of the first boundary node, the identification information of the second boundary node, and the policy control factor associated with the feature information according to the feature information of the intelligent routing service message.
  • the controller 150 has previously received the topology connection diagram of the hybrid forwarding device 121 in the SDN transition network 120 by means of IGP protocol listening or the like.
  • the controller 150 calculates the intelligent routing service flow that meets the requirements of the client 110 according to the identifier information of the first border node, the identifier information of the second border node, the policy control factor, and the topology connection diagram of the hybrid forwarding device 121 in the SDN transition network 120.
  • the sending path generates a corresponding second flow table for each node on the intelligent routing service flow forwarding path, and sends the second flow table to each node separately. Moreover, after the second flow table is sent to the first boundary node and the second boundary node, the first boundary node and the second boundary node process the intelligent routing service message according to the second flow entry, and The intelligent routing service message is sent to the controller 150 to relieve the load on the controller 150.
  • the subsequent intelligent routing service packet sent by the client 110 enters the SDN transition network 120 and follows the intelligent routing service flow forwarding path. The forwarding is performed and finally reaches the application server 130, thereby completing the transmission of the data.
  • the embodiment only mirrors the newly-initiated packet with the intelligent routing service, and does not mirror the packet of the common service, and overcomes the intelligent routing service request packet newly initiated by the previous embodiment.
  • the normal service message must be mirrored to the controller 150, thereby causing a heavy burden on the controller 150.
  • the application server 130 sends the feature information of the intelligent routing service request message to the policy server 140, and then forwards the message to the policy server 140.
  • the controller 150 after the controller 150 records the feature information of the intelligent routing service request message in the first flow table, and sends the information to the hybrid forwarding device 121, the controller 150 can mirror the intelligent routing service packet, and then go to the controller 150. Calculate the intelligent routing service flow forwarding path. Therefore, the time taken in this embodiment is slightly longer.
  • FIG. 5 is a schematic diagram of still another implementation manner of implementing an intelligent routing service by using the flow forwarding system shown in FIG. 1.
  • the controller sends the first flow entry to the hybrid forwarding device 121 as needed, where the first flow entry includes feature information and an action of the object that needs to perform the intelligent routing service, and the action is used to perform the control.
  • the device sends a message, so that the data stream having the feature information of the object that needs to perform the intelligent routing service enters the boundary node, and then uses the feature information as an index to search the flow table. If the matching flow entry is found, the packet is replaced by the traditional IP route. In addition to mode forwarding, an additional message is mirrored.
  • the operator has previously determined the object that needs to perform the intelligent routing service, for example, a certain user is a VIP user, so the service flow of the user can obtain more bandwidth for data transmission.
  • the operator sets the feature information of the data flow that needs to perform the intelligent routing service in the application server 130. Therefore, the application server 130 sends the feature information of the data flow that needs to perform the intelligent routing service and the constraint conditions required for establishing the intelligent routing service to the Policy server 140.
  • the policy server 140 parses the feature information of the data flow that needs to perform the intelligent routing service, and parses out the constraint conditions required for establishing the intelligent routing service according to the intelligent routing service request message, and generates a policy control factor, and the data flow of the intelligent routing service is The feature information and the policy control factor are encapsulated into a control policy, which is then sent to the controller 150.
  • the controller 150 generates the first flow table according to the feature information of the data flow of the intelligent routing service, and then sends the information to the respective hybrid forwarding devices 121 through the controller 150.
  • the client 110 sends an intelligent routing service packet to the application server 130.
  • the smart routing service packet is sent to the border node directly connected to the client 110, as indicated by the dotted line formed by the dotted line in the figure.
  • the boundary node that is directly connected to the user terminal 110 has received the first flow table, and the feature information of the intelligent routing service packet is recorded in the first flow table. Therefore, the border node directly connected to the user terminal 110 routes the intelligent route.
  • the service packet is mirrored to obtain the mirrored packet.
  • the mirrored message is encapsulated into a first message and sent to the controller 150.
  • the first message includes the mirrored packet, the identifier information of the border node, and the interface attribute information of the interface that receives the intelligent routing service packet, and the mirrored packet includes the feature information of the intelligent routing service packet.
  • the interface attribute information is used to identify that the border node is an inbound boundary node or an outbound node of the intelligent routing service packet in the SDN transition network.
  • the first message may include the feature information, the mirrored message, the identification information of the border node, and the interface attribute information of the interface that receives the service message.
  • the controller 150 After receiving the first message, the controller 150 reads the feature information of the intelligent routing service request message and the identity information of the border node from the first message; meanwhile, on the other hand, the intelligent routing service packet is in accordance with the traditional IP routing mode. Forwarding to continue to send to the application server 130. Since the intelligent routing service flow forwarding path has not been obtained at this time, the intelligent routing service packet is forwarded according to the traditional lookup manner of the IP routing table, and is forwarded through the internal connection ports of the multiple hybrid forwarding devices 121, and sent to and The application server 130 is directly connected to the boundary node.
  • the boundary node that is directly connected to the application server 130 has received the first flow table, and the feature information of the intelligent routing service packet is recorded in the first flow entry, so the boundary node directly connected to the application server 130 will
  • the intelligent routing service packet is mirrored to obtain a mirrored packet, and the mirrored packet is encapsulated into a first message and sent to the controller 150.
  • the first message includes the mirrored packet, the identifier information of the border node, and the interface attribute information of the interface that receives the service packet, and the mirrored packet includes the feature information of the intelligent routing service packet.
  • the original intelligent routing service packet is forwarded according to the traditional IP routing manner to continue to be sent to the application server 130 through the external connection port of the border node directly connected to the application server 130.
  • the first message may include the feature information, the mirrored message, the identification information of the border node, and the interface attribute information of the interface that receives the service message.
  • the controller 150 reads the feature information of the intelligent routing service packet, the identifier information of the second border node, and the interface attribute information of the interface that receives the service packet from the first message.
  • the first boundary node and the second boundary node are determined according to the interface attribute information.
  • the smart routing service request packet is received from the external connection port
  • the interface attribute information is that the packet is an uplink boundary node
  • the intelligent routing service request packet is sent from the external interface
  • the interface attribute information is The message is that the boundary node of the downlink is the second boundary node.
  • the boundary node directly connected to the client terminal 110 is the first boundary node
  • the boundary node directly connected to the application server 130 is the second boundary node.
  • the controller determines, according to the sequence of receiving the message, that the first boundary node is an inbound boundary node and the second boundary node is an outbound boundary node.
  • the controller 150 locally searches for the identification information of the first boundary node, the identification information of the second boundary node, and the policy control factor associated with the feature information according to the feature information of the intelligent routing service message.
  • the controller 150 has previously received the topology connection diagram of the hybrid forwarding device 121 in the SDN transition network 120 by means of IGP protocol listening or the like.
  • the controller 150 calculates the intelligent routing service flow that meets the requirements of the client 110 according to the identifier information of the first border node, the identifier information of the second border node, the policy control factor, and the topology connection diagram of the hybrid forwarding device 121 in the SDN transition network 120.
  • the sending path generates a corresponding second flow table for each node on the intelligent routing service flow forwarding path, and sends the second flow table to each node separately. Moreover, after the second flow table is sent to the first boundary node and the second boundary node, the first boundary node and the second boundary node process the intelligent routing service message according to the second flow entry, and The intelligent routing service message is sent to the controller 150 to relieve the load on the controller 150.
  • the subsequent intelligent routing service packet sent by the client 110 enters the SDN transition network 120 and follows the intelligent routing service flow forwarding path. The forwarding is performed and finally reaches the application server 130, thereby completing the transmission of the data.
  • this embodiment has the advantages of having the on-demand mirroring message and the short response time.
  • the present embodiment is only applicable to the scenario in which the object that needs to perform the intelligent routing service is known in advance.
  • FIG. 6 is a flowchart of an embodiment of a stream forwarding method according to the present application.
  • the flow forwarding method of this embodiment is applied to (SDN Migration network) SDN transition network, including:
  • the border node receives the intelligent routing service request packet sent by the user side device, where the intelligent routing service request packet is used to request the service server to provide the intelligent routing service for the user side device, and the intelligent routing service request packet includes the information required for establishing the intelligent routing service. Constraints.
  • the controller Before performing the intelligent routing service, the controller must first obtain the feature information of the data flow that needs to perform the intelligent routing service and the constraints required to establish the intelligent routing service.
  • the user-side device sends an intelligent routing service request packet, where the intelligent routing service request packet is used to request the service server to provide an intelligent routing service for the user-side device, where the intelligent routing service request packet includes the smart The feature information of the routing service request packet and the constraints required to establish an intelligent routing service.
  • the border node receives the intelligent routing service request packet sent by the user side device.
  • the border node If the border node does not find the matching flow entry corresponding to the feature information in the smart routing service request packet in the flow table, and the corresponding matching flow entry includes the feature information, The border node sends a first message to the controller, where the first message includes the feature information and the identifier information of the border node, where the border node is configured to receive the smart routing service request packet in the SDN transition network. Inbound or outbound nodes.
  • the boundary node does not necessarily record the feature information of the data stream. Therefore, the boundary node can be set in advance, and the outer connection port of the boundary node is set to be in the flow table.
  • the border node sends a first message to the controller, where the first message includes the feature information and the identification information of the boundary node; It is set to not send the feature information of the intelligent routing service request message to the controller even if the feature information is not found in the flow table.
  • the feature information includes at least one of the following: the source address, the destination address, the source port, the destination port, and the protocol number.
  • the first message encapsulates the intelligent routing service request message and the identification information of the border node, and the feature information is included in the intelligent routing service request message.
  • the first message may be encapsulated with the intelligent routing service request packet, the feature information of the intelligent routing service request packet, and the identifier information of the border node.
  • the intelligent routing service request packet is sent to the controller.
  • the border node In order to continue the packet transmission, the border node must also receive the second message sent by the controller, where the second message includes the intelligent routing service. The message is requested, so that the intelligent routing service request message is returned to the border node to continue the message transmission.
  • the first message is encapsulated with the mirrored packet of the intelligent routing service request packet and the identifier information of the border node.
  • the mirrored packet of the intelligent routing service request packet is the replica packet of the intelligent routing service request packet.
  • the smart routing service request packet contains the feature information. Therefore, the mirrored packet also contains the feature information.
  • the first message may be encapsulated with the mirrored message, the feature information, and the identification information of the border node.
  • the first message may further include interface attribute information of the interface that receives the intelligent routing service request message, where the interface attribute information is used to identify that the border node is an inbound boundary node or an outbound node of the SDN transition network.
  • the smart routing service request packet is received from the external connection port, and the interface attribute information is that the boundary node of the uplink is the first border node (inbound node), and the intelligent routing service request packet is sent from the external interface and the interface is
  • the attribute information is that the boundary node of the downlink is the second boundary node (outbound boundary node).
  • the controller may determine that the first boundary node is an inbound boundary node and the second boundary node is an outbound node according to a sequence of received messages.
  • the border node If the border node does not find the matching flow entry corresponding to the feature information in the smart routing service request packet in the flow table, the border node sends the first message to the controller.
  • the border node sends an intelligent routing service request packet according to the traditional IP routing mode.
  • the border node receives the first flow entry sent by the controller, where the first flow entry is generated according to the first message and the constraint condition is met.
  • the controller After receiving the first message, the controller obtains the feature information, the first border node identifier of the first border node, and the second border node identifier of the second border node, and receives the smart routing service request packet from the application server. Obtaining a constraint condition for establishing an intelligent routing service, and then generating a first flow entry, where the generated first flow entry meets the constraint.
  • the border node receives the first flow entry sent by the controller
  • S604 The border node processes the packet sent by the user side device according to the first flow entry.
  • the intelligent routing service flow forwarding path is established.
  • the border node no longer sends the intelligent routing service request packet according to the traditional IP routing mode, but processes the packet sent by the user side device according to the first flow entry. .
  • FIG. 7 is a flowchart of another embodiment of a stream forwarding method of the present application.
  • the flow forwarding method of this embodiment is applied to an SDN transition network, and includes:
  • S701 The border node receives the service packet sent by the user equipment.
  • the controller Before performing the intelligent routing service, the controller must first obtain the feature information of the data flow that needs to perform the intelligent routing service and the constraints required to establish the intelligent routing service.
  • the user-side device sends an intelligent routing service request packet, where the intelligent routing service request packet is used to request the service server to provide an intelligent routing service for the user-side device, where the intelligent routing service request packet includes the smart The feature information of the routing service request packet and the constraints required to establish an intelligent routing service.
  • the operator has previously known the feature information of the data flow that needs to perform the intelligent routing service. You only need to obtain the constraints required to establish an intelligent routing service through intelligent routing service request packets.
  • the user equipment After the smart routing service request packet is sent, the user equipment will continue to send service packets (or intelligent routing service packets).
  • the border node receives the service packet sent by the user equipment.
  • the border node searches the flow table for the first flow entry corresponding to the feature information in the service packet, where the first flow entry includes an action, and the action is used to send a message to the controller, where the first flow entry is determined by the controller.
  • the controller sends the feature information of the intelligent routing service request message to the controller, and the controller generates the first flow table according to the feature information and sends the message to the border node. Therefore, when the external connection port of the border node is set to find the matching flow entry corresponding to the feature information in the intelligent routing service request packet in the flow table, the border node sends a message to the controller, where the message includes The feature information and the identification information of the boundary node; the internal connection port of the boundary node is set to not send the feature information of the intelligent routing service request message to the controller even if the feature information is found in the flow table.
  • the feature information includes at least one of the following: the source address, the destination address, the source port, the destination port, and the protocol number.
  • the border node searches for the first flow entry corresponding to the feature information in the service packet in the flow table.
  • the border node sends a first message to the controller, where the first message includes the feature information, the identifier information of the border node, and the interface attribute information of the interface that receives the service packet, where the interface attribute information is used to identify the border node as the service packet.
  • the boundary node of the SDN transition network or the outbound node In the boundary node of the SDN transition network or the outbound node.
  • the border node When the corresponding feature information is found in the first flow entry, the border node sends a first message to the controller.
  • the first message includes a mirrored packet of the service packet, the identifier information of the border node, and the interface attribute information of the interface that receives the service packet, where the mirrored packet of the service packet is a replication of the service packet.
  • a message so the service message includes the feature information, and the mirror message also includes the feature information.
  • the first message includes the feature information, the identifier information of the border node, the interface attribute information of the interface that receives the service packet, and the mirrored message of the service packet.
  • the interface attribute information is used to identify that the border node is an inbound or outbound node of the SDN transition network.
  • the smart routing service request packet is received from the external connection port, and the interface attribute information is that the boundary node of the uplink is the first border node (inbound node), and the intelligent routing service request packet is sent from the external interface and the interface is The attribute information is that the boundary node of the downlink is the second boundary node (outbound boundary node).
  • the intelligent routing service flow forwarding path is not generated at this time.
  • the border node sends the intelligent routing service packet according to the traditional IP routing mode.
  • S704 The border node receives the second flow entry sent by the controller, where the second flow entry meets the constraint condition in the intelligent routing service request packet.
  • the controller After receiving the first message, the controller obtains the feature information, the first border node identifier of the first border node, and the second border node identifier of the second border node, and receives the smart routing service request packet from the application server. Obtaining a constraint condition for establishing an intelligent routing service, and then generating a second flow entry, where the generated second flow entry meets the constraint. The border node receives the second flow entry sent by the controller.
  • S705 The border node processes the service packet according to the second flow entry.
  • the intelligent routing service flow forwarding path is established, and the border node does not send the packet according to the traditional IP routing mode, but processes the packet sent by the user side device according to the second flow entry.
  • FIG. 8 is a flowchart of still another embodiment of the flow forwarding method of the present application.
  • the flow forwarding method of this embodiment is applied to an SDN transition network, and includes:
  • the controller receives the first message sent by the first border node, where the first message includes the feature information of the packet sent by the user side device and the identifier information of the first border node.
  • the first boundary node and the second boundary node do not know under what circumstances the first message and the second message need to be sent, and the controller sends the first boundary node and the The second boundary node respectively sends the first flow entry to tell the first boundary node and the second boundary node when to send the message.
  • the first flow entry includes an action, and the action is used to send a message to the controller; the first flow entry is generated by the controller according to the intelligent routing service request message sent by the user side device, or according to an advance Set the object that needs to be generated for intelligent routing services.
  • the first boundary node and the second boundary node need to send the first message and the second message.
  • the first message further includes the first interface attribute information of the first interface that the first border node receives the packet, where the first interface attribute information is used to identify that the first border node is the packet In the boundary node of the SDN transition network.
  • S802 The controller receives a second message sent by a second border node, where the second message includes the feature information and identifier information of the second border node.
  • the second message further includes: the second border node receives the second interface attribute information of the second interface of the packet, where the second interface attribute information is used to identify that the second border node is the service report
  • the text is at the egress node of the SDN transition network.
  • S803 The controller determines that the first border node is an inbound node that receives the packet in the SDN transition network, and the second border node receives the packet in the SDN transition network. Out of the boundary node.
  • the smart routing service request packet is received from the external connection port, and the interface attribute information is that the border node of the uplink is the inbound node, and the intelligent routing service request packet is received from the external interface, and the interface attribute information is the packet.
  • the downstream boundary node is the outbound boundary node.
  • the controller determines, according to the sequence of receiving the first message and the second message, that the first boundary node is an inbound boundary node and the second boundary node is an outbound node.
  • the controller calculates, according to the identifier information of the first border node, the identifier information and the policy control factor of the second border node, a flow forwarding path that the intelligent routing service flow corresponding to the feature information needs to pass.
  • the controller parses the identification information of the first boundary node, the identification information of the second boundary node, and the feature information from the first message and the second message.
  • the controller receives the policy control factor and the feature information sent by the policy server.
  • the controller associates the identification information of the first boundary node, the identification information of the second boundary node, and the policy control factor by using the feature information.
  • the controller calculates, according to the identifier information of the first border node, the identifier information of the second border node and the policy control factor, a flow forwarding path that the intelligent routing service flow corresponding to the feature information needs to pass.
  • S805 The controller generates a corresponding flow entry for each node on the flow forwarding path, and sends the flow entry to the corresponding node, where the policy control factor is The constraint condition in the intelligent routing service request packet sent by the user side device is determined.
  • the application also provides a stream forwarding method, which is applied to (SDN migration network) SDN transition network, the method comprises the following steps:
  • the first border node receives the intelligent routing service request packet sent by the user side device, where the smart routing service request packet is used to request the service server to provide the intelligent routing service for the user side device, where the intelligent routing service request packet includes Establishing constraints required for the intelligent routing service;
  • the first border node sends a first message to the controller, where the first message includes the feature information and the identifier information of the first border node;
  • the controller receives the first message sent by the first border node
  • the second border node receives the intelligent routing service request packet sent by the user side device that is forwarded by the first border node;
  • the second border node If the second border node does not find the matching flow entry corresponding to the feature information in the smart routing service request packet in the flow table, and the corresponding matching flow entry includes the feature information, The second border node sends a second message to the controller, where the second message includes the feature information and the identifier information of the second border node;
  • the controller receives the second message sent by the second border node
  • the controller Determining, by the controller, that the first border node is an inbound node that receives the packet in the SDN transition network; and the second border node is configured to receive the packet in the SDN transition network Boundary node
  • the controller calculates, according to the identifier information of the first border node, the identifier information of the second border node, and the policy control factor, a flow forwarding path that is required for the intelligent routing service flow corresponding to the feature information, where
  • the policy control factor is determined according to a constraint condition in the intelligent routing service request packet sent by the user side device;
  • the controller generates a corresponding flow entry for each node on the flow forwarding path, and sends the flow entry to the corresponding node, where the node includes the first boundary node and the Said second boundary node;
  • the first border node and the second border node process the packet sent by the user side device according to the flow entry.
  • the application also provides a stream forwarding method, which is applied to (SDN migration network) SDN transition network, the method comprises the following steps:
  • the first border node receives the service packet sent by the user equipment, and the first border node searches the flow table for the first flow entry corresponding to the feature information in the service packet, where the first flow entry includes an action.
  • the action is used to send a message to the controller; the first flow entry is generated by the controller according to the intelligent routing service request message sent by the user side device;
  • the first border node sends a first message to the controller, where the first message includes the feature information, the identifier information of the border node, and interface attribute information of an interface that receives the service packet;
  • the controller receives a first message sent by the first border node
  • the second border node receives the service packet sent by the user equipment that is forwarded by the first border node, and the second border node searches for the first flow entry corresponding to the feature information in the service packet in the flow table.
  • the first flow entry includes an action for sending a message to the controller;
  • the second border node sends a second message to the controller, where the second message includes the feature information, the identifier information of the border node, and interface attribute information of an interface that receives the service packet;
  • the controller receives a second message sent by the second border node
  • the controller Determining, by the controller, that the first border node is an inbound node that receives the packet in the SDN transition network; and the second border node is configured to receive the packet in the SDN transition network Boundary node
  • the controller calculates, according to the identifier information of the first border node, the identifier information of the second border node and the policy control factor, a flow forwarding path that the intelligent routing service flow corresponding to the feature information needs to pass;
  • the controller generates a corresponding second flow entry for each node on the flow forwarding path, and sends the second flow entry to the corresponding node, where the policy control factor is Determining, according to the constraint condition in the intelligent routing service request packet sent by the user side device, the node includes a first boundary node and a second boundary node;
  • the first border node and the second border node process the service packet according to the second flow entry.
  • FIG. 7 please refer to FIG. 7 , FIG. 8 and related descriptions, and details are not repeated herein.
  • FIG. 9 is a schematic structural diagram of an embodiment of a hybrid forwarding device according to the present application.
  • the hybrid forwarding device of the present embodiment includes: a first receiving module 910, a lookup receiving module 920, a second receiving module 930, and a processing module 940.
  • the first receiving module 910 is configured to receive an intelligent routing service request packet sent by the user side device, where the smart routing service request packet is used to request the service server to provide an intelligent routing service for the user side device, where the intelligent routing The service request message includes the constraints required to establish the intelligent routing service.
  • the controller before performing intelligent routing services, the controller must first obtain the feature information of the data flow that needs to perform the intelligent routing service and the constraints required to establish the intelligent routing service.
  • the user-side device sends an intelligent routing service request packet, where the intelligent routing service request packet is used to request the service server to provide an intelligent routing service for the user-side device, where the intelligent routing service request packet includes the smart The feature information of the routing service request packet and the constraints required to establish an intelligent routing service.
  • the first receiving module 910 receives the intelligent routing service request message sent by the user side device.
  • the first receiving module 910 sends the smart routing service request packet to the lookup receiving module 920.
  • the search receiving module 920 is configured to receive the smart routing service request packet, where the border node does not find the matching flow entry corresponding to the feature information in the smart routing service request packet in the flow table, The corresponding matching flow entry includes the feature information, and the border node sends a first message to the controller, where the first message includes the feature information and identifier information of the boundary node, where the border node is Receiving an inbound boundary node or an outbound boundary node of the intelligent routing service request packet in the SDN transition network.
  • the boundary node must not record the feature information of the data stream. Therefore, the boundary node can be set in advance, and the outer connection port of the boundary node is set to be in the flow table.
  • the border node sends a first message to the controller, where the first message includes the feature information and the identification information of the boundary node;
  • the connection port is set to not send the feature information of the intelligent routing service request message to the controller even if the feature information is not found in the flow table.
  • the feature information includes at least one of the following: the source address, the destination address, the source port, the destination port, and the protocol number.
  • the first message encapsulates the intelligent routing service request message and the identification information of the border node, and the feature information is included in the intelligent routing service request message.
  • the first message may be encapsulated with the intelligent routing service request packet, the feature information of the intelligent routing service request packet, and the identifier information of the border node.
  • the intelligent routing service request packet is sent to the controller.
  • the border node In order to continue the packet transmission, the border node must also receive the second message sent by the controller, where the second message includes the intelligent routing service. The message is requested, so that the intelligent routing service request message is returned to the border node to continue the message transmission.
  • the first message is encapsulated with the mirrored packet of the intelligent routing service request packet and the identifier information of the border node.
  • the mirrored packet of the intelligent routing service request packet is the replica packet of the intelligent routing service request packet.
  • the smart routing service request packet contains the feature information. Therefore, the mirrored packet also contains the feature information.
  • the first message may be encapsulated with the mirrored message, the feature information, and the identification information of the border node.
  • the first message may further include interface attribute information of the interface that receives the intelligent routing service request message, where the interface attribute information is used to identify that the border node is an inbound boundary node or an outbound node of the SDN transition network.
  • the smart routing service request packet is received from the external connection port, and the interface attribute information is that the boundary node of the uplink is the first border node (inbound node), and the intelligent routing service request packet is sent from the external interface and the interface is
  • the attribute information is that the boundary node of the downlink is the second boundary node (outbound boundary node).
  • the controller may determine that the first boundary node is an inbound boundary node and the second boundary node is an outbound node according to a sequence of received messages.
  • the processing module 940 sends an intelligent routing service request packet according to the traditional IP routing mode.
  • the second receiving module 930 is configured to receive a first flow entry sent by the controller, where the first flow entry is generated according to the first message and meets the constraint condition.
  • the controller After receiving the first message, the controller obtains the feature information, the first boundary node identifier of the first border node, and the second border node identifier of the second border node, and receives the intelligent routing service request report from the application server.
  • the constraints required to establish an intelligent routing service are obtained, and then the first flow entry is generated, and the generated first flow entry satisfies the constraint condition.
  • the second receiving module 930 receives the first flow entry sent by the controller.
  • the second receiving module 930 sends the first flow entry to the processing module 940.
  • the processing module 940 is configured to receive the first flow entry, and process the packet sent by the user side device according to the first flow entry.
  • the intelligent routing service flow forwarding path is established, and the processing module 940 does not send the intelligent routing service request packet according to the traditional IP routing manner, but processes the user-side device according to the first flow entry. Message.
  • the device further includes a third receiving module, where the third receiving module receives the second message sent by the controller, where the second message includes the intelligent routing service request message;
  • the processing module 940 sends the intelligent routing service request message according to the traditional IP routing mode.
  • FIG. 10 is a schematic structural diagram of another embodiment of a hybrid forwarding device according to the present application.
  • the hybrid forwarding device of this embodiment includes: a first receiving module 1010, a searching module 1020, a sending module 1030, a second receiving module 1040, and a processing module 1050.
  • the first receiving module 1010 is configured to receive a service packet sent by the user side device.
  • the controller before performing intelligent routing services, the controller must first obtain the feature information of the data flow that needs to perform the intelligent routing service and the constraints required to establish the intelligent routing service.
  • the user-side device sends an intelligent routing service request packet, where the intelligent routing service request packet is used to request the service server to provide an intelligent routing service for the user-side device, where the intelligent routing service request packet includes the smart The feature information of the routing service request packet and the constraints required to establish an intelligent routing service.
  • the operator has previously known the feature information of the data flow that needs to perform the intelligent routing service. Therefore, it is only necessary to obtain the constraint conditions required for establishing an intelligent routing service through the intelligent routing service request message.
  • the first receiving module 1010 receives the service packet sent by the user side device.
  • the first receiving module 1010 sends the service packet to the searching module 1020.
  • the searching module 1020 is configured to receive the service packet, and find, in the flow table, a first flow entry corresponding to the feature information in the service packet, where the first flow entry includes an action, and the action is used to Sending a message to the controller; the first flow entry is generated by the controller according to the intelligent routing service request message sent by the user side device or generated according to a preset requirement for the intelligent routing service.
  • the application server has obtained the intelligent routing service request message, and sends the feature information of the intelligent routing service request message to the controller, and the controller generates the first flow table according to the feature information and sends the first flow table to the boundary node. Therefore, when the external connection port of the border node is set to find the matching flow entry corresponding to the feature information in the intelligent routing service request packet in the flow table, the border node sends a message to the controller, where the message includes The feature information and the identification information of the boundary node; the internal connection port of the boundary node is set to not send the feature information of the intelligent routing service request message to the controller even if the feature information is found in the flow table.
  • the feature information includes at least one of the following: the source address, the destination address, the source port, the destination port, and the protocol number.
  • the locating module 1020 searches for the first flow entry corresponding to the feature information in the service packet in the flow table.
  • the searching module 1020 sends the search result to the sending module 1030.
  • the sending module 1030 is configured to receive the search result, and send a first message to the controller, where the first message includes the feature information, the identifier information of the border node, and an interface of an interface that receives the service packet. Attribute information, the interface attribute information is used to identify that the border node is an inbound node or an outbound node of the service packet in the SDN transition network.
  • the sending module 1030 sends the first message to the controller.
  • the first message includes a mirrored packet of the service packet, the identifier information of the border node, and the interface attribute information of the interface that receives the service packet, where the mirrored packet of the service packet is a replication of the service packet.
  • a message so the service message includes the feature information, and the mirror message also includes the feature information.
  • the first message includes the feature information, the identifier information of the border node, the interface attribute information of the interface that receives the service packet, and the mirrored message of the service packet.
  • the interface attribute information is used to identify that the border node is an inbound or outbound node of the SDN transition network.
  • the smart routing service request packet is received from the external connection port, and the interface attribute information is that the boundary node of the uplink is the first border node (inbound node), and the intelligent routing service request packet is sent from the external interface and the interface is The attribute information is that the boundary node of the downlink is the second boundary node (outbound boundary node).
  • the processing module 1050 sends the intelligent routing service packet according to the traditional IP routing manner.
  • the second receiving module 1040 is configured to receive a second flow entry sent by the controller, where the second flow entry meets a constraint condition in the intelligent routing service request packet.
  • the controller After receiving the first message, the controller obtains the feature information, the first boundary node identifier of the first border node, and the second border node identifier of the second border node, and receives the intelligent routing service request report from the application server.
  • the constraints required to establish an intelligent routing service are obtained, and then a second flow entry is generated, and the generated second flow entry satisfies the constraint condition.
  • the second receiving module 1040 receives the second flow entry sent by the controller.
  • the second receiving module 1040 sends the second flow entry to the processing module 1050.
  • the processing module 1040 is configured to receive the second flow entry, and process the service packet according to the second flow entry.
  • the intelligent routing service flow forwarding path is established, and the processing module 1040 does not send the packet according to the traditional IP routing manner, but processes the report sent by the user side device according to the second flow entry. Text.
  • FIG. 11 is a schematic structural diagram of an embodiment of a controller according to the present application.
  • the controller of this embodiment includes: a receiving module 1110, a determining module 1120, a calculating module 1130, and a sending module 1140.
  • the receiving module 1110 is configured to receive a first message sent by the first border node, where the first message includes the feature information of the packet sent by the user side device and the identifier information of the first border node, and receives the second boundary. a second message sent by the node, where the second message includes the feature information and the identification information of the second border node.
  • the first boundary node and the second boundary node do not know under what circumstances the first message and the second message need to be sent, and the controller sends the first boundary node to the first boundary node.
  • the second boundary node respectively sends a first flow entry to tell the first boundary node and the second boundary node when to send the message.
  • the first flow entry includes an action, and the action is used to send a message to the controller; the first flow entry is generated by the controller according to the intelligent routing service request message sent by the user side device, or according to an advance Set the object that needs to be generated for intelligent routing services.
  • the first boundary node and the second boundary node need to send the first message and the second message.
  • the first message further includes the first interface attribute information of the first interface that the first border node receives the packet, where the first interface attribute information is used to identify that the first border node is the packet In the boundary node of the SDN transition network.
  • the second message further includes: the second border node receives the second interface attribute information of the second interface of the packet, where the second interface attribute information is used to identify that the second border node is the service report
  • the text is at the egress node of the SDN transition network.
  • the receiving module 1110 After receiving the message, the receiving module 1110 receives the first message sent by the first border node.
  • the receiving module 1110 sends the first message and the second message to the determining module 1120.
  • the determining module 1120 is configured to determine that the first border node is an inbound node that receives the packet in the SDN transition network, and the second border node is to receive the report in the SDN transition network.
  • the boundary node of the text is configured to determine that the first border node is an inbound node that receives the packet in the SDN transition network, and the second border node is to receive the report in the SDN transition network. The boundary node of the text.
  • the determining module 1120 receives the intelligent routing service request message from the external connection port, and the interface attribute information is that the boundary node of the uplink is the inbound boundary node, and receives the intelligent routing service request message from the external connection port and the interface attribute.
  • the information is that the message is the boundary node of the downlink as the outbound boundary node.
  • the determining module 1120 determines, according to the sequence of receiving the first message and the second message, that the first boundary node is an inbound boundary node and the second boundary node is an outbound boundary node.
  • the determining module 1120 sends the determined result to the computing module 1130.
  • the calculating module 1130 is configured to receive the result of the determining, and generate respective corresponding flow table entries for each node on the flow forwarding path.
  • the sending module 1140 is configured to separately send the flow entry to the corresponding node, where the policy control factor is determined according to a constraint condition in the intelligent routing service request packet sent by the user side device.
  • the sending module 1140 is further configured to: when the packet is a service packet, send the first flow entry to the first boundary node and the second boundary node, where the first flow entry includes an action, and the action
  • the method is configured to send a message to the controller, where the first flow entry is generated by the controller according to the intelligent routing service request message sent by the user side device.
  • the receiving module 1110 is further configured to receive the policy control factor and the feature information sent by the policy server.
  • FIG. 12 is a schematic structural diagram of still another embodiment of a hybrid forwarding device according to the present application.
  • the hybrid forwarding device of the present embodiment includes a receiver 1210, a processor 1220, a transmitter 1230, a random access memory 1240, a read only memory 1250, and a bus 1260.
  • the processor 1220 is coupled to the receiver 1210, the transmitter 1230, the random access memory 1240, and the read only memory 1250 via a bus 1260.
  • the hybrid forwarding device needs to be run, the basic input/output system in the read-only memory 1250 or the bootloader booting system in the embedded system is booted to boot the hybrid forwarding device into a normal operating state.
  • the application and operating system are run in the random access memory 1240 such that:
  • the receiver 1210 is configured to receive an intelligent routing service request packet sent by the user side device, where the smart routing service request packet is used to request the service server to provide an intelligent routing service for the user side device, where the intelligent routing service request packet is sent. It includes the constraints required to establish the intelligent routing service.
  • the controller before performing intelligent routing services, the controller must first obtain the feature information of the data flow that needs to perform the intelligent routing service and the constraints required to establish the intelligent routing service.
  • the user-side device sends an intelligent routing service request packet, where the intelligent routing service request packet is used to request the service server to provide an intelligent routing service for the user-side device, where the intelligent routing service request packet includes the smart The feature information of the routing service request packet and the constraints required to establish an intelligent routing service.
  • the receiver 1210 receives the intelligent routing service request message sent by the user side device.
  • the processor 1220 is configured to receive the smart routing service request packet, where the border node does not find the matching flow entry corresponding to the feature information in the smart routing service request packet in the flow table.
  • the corresponding matching flow entry includes the feature information
  • the sender 1230 sends a first message to the controller, where the first message includes the feature information and identifier information of the boundary node, where the border node is Receiving an inbound boundary node or an outbound boundary node of the intelligent routing service request packet in the SDN transition network.
  • the boundary node must not record the feature information of the data stream. Therefore, the boundary node can be set in advance, and the outer connection port of the boundary node is set to be in the flow table.
  • the border node sends a first message to the controller, where the first message includes the feature information and the identification information of the boundary node;
  • the connection port is set to not send the feature information of the intelligent routing service request message to the controller even if the feature information is not found in the flow table.
  • the feature information includes at least one of the following: the source address, the destination address, the source port, the destination port, and the protocol number.
  • the first message encapsulates the intelligent routing service request message and the identification information of the border node, and the feature information is included in the intelligent routing service request message.
  • the first message may be encapsulated with the intelligent routing service request packet, the feature information of the intelligent routing service request packet, and the identifier information of the border node.
  • the intelligent routing service request packet is sent to the controller.
  • the border node In order to continue the packet transmission, the border node must also receive the second message sent by the controller, where the second message includes the intelligent routing service. The message is requested, so that the intelligent routing service request message is returned to the border node to continue the message transmission.
  • the first message is encapsulated with the mirrored packet of the intelligent routing service request packet and the identifier information of the border node.
  • the mirrored packet of the intelligent routing service request packet is the replica packet of the intelligent routing service request packet.
  • the smart routing service request packet contains the feature information. Therefore, the mirrored packet also contains the feature information.
  • the first message may be encapsulated with the mirrored message, the feature information, and the identification information of the border node.
  • the first message may further include interface attribute information of the interface that receives the intelligent routing service request message, where the interface attribute information is used to identify that the border node is an inbound boundary node or an outbound node of the SDN transition network.
  • the smart routing service request packet is received from the external connection port, and the interface attribute information is that the boundary node of the uplink is the first border node (inbound node), and the intelligent routing service request packet is sent from the external interface and the interface is
  • the attribute information is that the boundary node of the downlink is the second boundary node (outbound boundary node).
  • the controller may determine that the first boundary node is an inbound boundary node and the second boundary node is an outbound node according to a sequence of received messages.
  • the processor 1220 sends an intelligent routing service request packet according to the traditional IP routing mode.
  • the receiver 1210 is further configured to receive a first flow entry sent by the controller, where the first flow entry is generated according to the first message and meets the constraint.
  • the controller After receiving the first message, the controller obtains the feature information, the first boundary node identifier of the first border node, and the second border node identifier of the second border node, and receives the intelligent routing service request report from the application server.
  • the constraints required to establish an intelligent routing service are obtained, and then the first flow entry is generated, and the generated first flow entry satisfies the constraint condition.
  • the receiver 1210 receives the first flow entry sent by the controller.
  • the processor 1220 is configured to receive the first flow entry, and process the packet sent by the user side device according to the first flow entry.
  • the intelligent routing service flow forwarding path is established, and the processor 1220 does not send the intelligent routing service request packet according to the traditional IP routing manner, but processes the user-side device according to the first flow entry. Message.
  • the receiver 1210 is further configured to receive a second message sent by the controller, where the second message includes the intelligent routing service request message; and the processing module 940 is configured according to a traditional IP route. The method sends the intelligent routing service request packet.
  • FIG. 13 is a schematic structural diagram of still another embodiment of a hybrid forwarding device according to the present application.
  • the hybrid forwarding device of the present embodiment includes a receiver 1310, a processor 1320, a transmitter 1330, a random access memory 1340, a read only memory 1350, and a bus 1360.
  • the processor 1320 is coupled to the receiver 1310, the transmitter 1330, the random access memory 1340, and the read only memory 1350 via the bus 1360.
  • the hybrid forwarding device needs to be run, the basic input/output system in the read-only memory 1350 or the bootloader booting system in the embedded system is booted to boot the hybrid forwarding device into a normal operating state.
  • the application and operating system are run in random access memory 1340 such that:
  • the receiver 1310 is configured to receive a service packet sent by the user side device.
  • the controller before performing intelligent routing services, the controller must first obtain the feature information of the data flow that needs to perform the intelligent routing service and the constraints required to establish the intelligent routing service.
  • the user-side device sends an intelligent routing service request packet, where the intelligent routing service request packet is used to request the service server to provide an intelligent routing service for the user-side device, where the intelligent routing service request packet includes the smart The feature information of the routing service request packet and the constraints required to establish an intelligent routing service.
  • the operator has previously known the feature information of the data flow that needs to perform the intelligent routing service. Therefore, it is only necessary to obtain the constraint conditions required for establishing an intelligent routing service through the intelligent routing service request message.
  • the user equipment After the smart routing service request packet is sent, the user equipment will continue to send service packets (or intelligent routing service packets).
  • the receiver 1310 receives the service packet sent by the user side device.
  • the processor 1320 is configured to receive the service packet, and find, in the flow table, a first flow entry corresponding to the feature information in the service packet, where the first flow entry includes an action, and the action is used to Sending a message to the controller; the first flow entry is generated by the controller according to the intelligent routing service request message sent by the user side device or generated according to a preset requirement for the intelligent routing service.
  • the application server has obtained the intelligent routing service request message, and sends the feature information of the intelligent routing service request message to the controller, and the controller generates the first flow table according to the feature information and sends the first flow table to the boundary node. Therefore, when the external connection port of the border node is set to find the matching flow entry corresponding to the feature information in the intelligent routing service request packet in the flow table, the border node sends a message to the controller, where the message includes The feature information and the identification information of the boundary node; the internal connection port of the boundary node is set to not send the feature information of the intelligent routing service request message to the controller even if the feature information is found in the flow table.
  • the feature information includes at least one of the following: the source address, the destination address, the source port, the destination port, and the protocol number.
  • the processor 1320 searches for a first flow entry corresponding to the feature information in the service packet in the flow table.
  • the transmitter 1330 is configured to receive the search result, and send a first message to the controller, where the first message includes the feature information, the identifier information of the border node, and an interface of an interface that receives the service packet. Attribute information, the interface attribute information is used to identify that the border node is an inbound node or an outbound node of the service packet in the SDN transition network.
  • the sender 1330 sends the first message to the controller.
  • the first message includes a mirrored packet of the service packet, the identifier information of the border node, and the interface attribute information of the interface that receives the service packet, where the mirrored packet of the service packet is a replication of the service packet.
  • a message so the service message includes the feature information, and the mirror message also includes the feature information.
  • the first message includes the feature information, the identifier information of the border node, the interface attribute information of the interface that receives the service packet, and the mirrored message of the service packet.
  • the interface attribute information is used to identify that the border node is an inbound or outbound node of the SDN transition network.
  • the smart routing service request packet is received from the external connection port, and the interface attribute information is that the boundary node of the uplink is the first border node (inbound node), and the intelligent routing service request packet is sent from the external interface and the interface is The attribute information is that the boundary node of the downlink is the second boundary node (outbound boundary node).
  • the sender 1330 sends the intelligent routing service packet according to the traditional IP routing manner.
  • the receiver 1310 is further configured to receive a second flow entry sent by the controller, where the second flow entry meets a constraint condition in the intelligent routing service request packet.
  • the controller After receiving the first message, the controller obtains the feature information, the first boundary node identifier of the first border node, and the second border node identifier of the second border node, and receives the intelligent routing service request report from the application server.
  • the constraints required to establish an intelligent routing service are obtained, and then a second flow entry is generated, and the generated second flow entry satisfies the constraint condition.
  • the receiver 1310 receives the second flow entry sent by the controller.
  • the processor 1320 is configured to receive the second flow entry, and process the service packet according to the second flow entry.
  • the intelligent routing service flow forwarding path is established, and the processor 1320 does not send the packet according to the traditional IP routing manner, but processes the report sent by the user side device according to the second flow entry. Text.
  • FIG. 14 is a schematic structural diagram of another embodiment of a controller of the present application.
  • the controller of the present embodiment includes a receiver 1410, a processor 1420, a transmitter 1430, a random access memory 1440, a read only memory 1450, and a bus 1460.
  • the processor 1420 is coupled to the receiver 1410, the transmitter 1430, the random access memory 1440, and the read only memory 1450 via a bus 1460.
  • the controller needs to be run, the booting is started by the solid input/output system in the read-only memory 1450 or the bootloader booting system in the embedded system, and the controller is put into a normal running state. After the controller enters a normal operating state, the application and operating system are run in random access memory 1440 such that:
  • the receiver 1410 is configured to receive a first message sent by the first border node, where the first message includes feature information of the packet sent by the user side device and identifier information of the first border node, and receives the second boundary. a second message sent by the node, where the second message includes the feature information and the identification information of the second border node.
  • the first boundary node and the second boundary node do not know under what circumstances the first message and the second message need to be sent, and the controller sends the first boundary node to the first boundary node.
  • the second boundary node respectively sends a first flow entry to tell the first boundary node and the second boundary node when to send the message.
  • the first flow entry includes an action, and the action is used to send a message to the controller; the first flow entry is generated by the controller according to the intelligent routing service request message sent by the user side device, or according to an advance Set the object that needs to be generated for intelligent routing services.
  • the first boundary node and the second boundary node need to send the first message and the second message.
  • the first message further includes the first interface attribute information of the first interface that the first border node receives the packet, where the first interface attribute information is used to identify that the first border node is the packet In the boundary node of the SDN transition network.
  • the second message further includes: the second border node receives the second interface attribute information of the second interface of the packet, where the second interface attribute information is used to identify that the second border node is the service report
  • the text is at the egress node of the SDN transition network.
  • the receiver 1410 After receiving the message, the receiver 1410 receives the first message sent by the first border node.
  • the processor 1420 is configured to determine that the first border node is an inbound border node that receives the packet in the SDN transition network, and the second border node receives the report in the SDN transition network.
  • the boundary node of the text is configured to determine that the first border node is an inbound border node that receives the packet in the SDN transition network, and the second border node receives the report in the SDN transition network. The boundary node of the text.
  • the processor 1420 receives the intelligent routing service request message from the external connection port, and the interface attribute information is that the boundary node of the uplink is the inbound boundary node, and receives the intelligent routing service request message from the external connection port and the interface attribute.
  • the information is that the message is the boundary node of the downlink as the outbound boundary node.
  • the processor 1420 determines that the first boundary node is an inbound boundary node and the second boundary node is an outbound node according to a sequence of receiving the first message and the second message.
  • the processor 1420 is further configured to receive the result of the determining, to generate respective corresponding flow entry items for each node on the flow forwarding path.
  • the transmitter 1430 is configured to send the flow entry to the corresponding node, where the policy control factor is determined according to a constraint condition in the intelligent routing service request packet sent by the user side device.
  • the transmitter 1430 is further configured to: when the packet is a service packet, send the first flow entry to the first boundary node and the second boundary node, where the first flow entry includes an action, and the action
  • the method is configured to send a message to the controller, where the first flow entry is generated by the controller according to the intelligent routing service request message sent by the user side device.
  • the receiver 1410 is further configured to receive the policy control factor and the feature information sent by the policy server.
  • the present application further provides a flow forwarding system, including: a user terminal, a hybrid forwarding device, an application server, a controller, and a policy server, where the policy server receives the intelligent route sent by the application server.
  • the intelligent routing service packet is forwarded to the application server according to the intelligent routing service flow forwarding path.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device implementations described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combinations can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • a computer readable storage medium A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (ROM, Read-Only) Memory, random access memory (RAM), disk or optical disk, and other media that can store program code.

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Abstract

本申请公开了一种流转发方法、设备及系统。所述方法包括：边界节点接收用户侧设备发送的智能路由业务请求报文，智能路由业务请求报文用于请求业务服务器为用户侧设备提供智能路由业务，智能路由业务请求报文包括建立智能路由业务所需的约束条件；如果边界节点在流表中没有查找到智能路由业务请求报文中的特征信息对应的匹配流表项，则边界节点向控制器发送第一消息，第一消息包括特征信息和边界节点的标识信息，边界节点为在SDN过渡网络中接收智能路由业务请求报文的入边界节点或出边界节点；边界节点接收控制器发送的第一流表项，第一流表项根据第一消息生成且满足束条件；边界节点根据第一流表项处理用户侧设备发来的报文。

Description

流转发方法、设备及系统
【技术领域】
本申请涉及通信网络领域，特别是涉及流转发方法、设备以及系统。
【背景技术】
在2006年，斯坦福的学生Martin Casado领导了一个关于网络安全与管理的项目，该项目试图通过一个集中式的控制器，让网络管理员可以方便地定义基于网络流的安全控制策略，并将这些安全策略应用到各种网络设备中，从而实现对整个网络通讯的安全控制。受此项目启发，Martin和他的导师Nick McKeown教授发现，如果将设计更一般化，将传统网络设备的数据转发(data plane)和路由控制(control plane)两个功能模块相分离，通过集中式的控制器(Controller)以标准化的接口对各种网络设备进行管理和配置，那么这将为网络资源的设计、管理和使用提供更多的可能性。于是，他们便提出了OpenFlow的概念。基于OpenFlow为网络带来的可编程的特性，KateGreene于2009年评选年度十大前沿技术时进一步提出了软件定义网络（Software Defined Network，SDN）的概念--如果将网络中所有的网络设备视为被管理的资源，那么参考操作系统的原理，可以抽象出一个网络操作系统(Network OS)的概念—这个网络操作系统一方面抽象了底层网络设备的具体细节，同时还为上层应用提供了统一的管理视图和编程接口。这样，基于网络操作系统这个平台，用户可以开发各种应用程序，通过软件来定义逻辑上的网络拓扑，以满足对网络资源的不同需求，而无需关心底层网络的物理拓扑结构。
所以，SDN/OpenFlow架构是一种新型网络架构，与传统网络所采用的查找IP路由相比，SDN/OpenFlow能够实现网络流量的灵活控制，为核心网络及应用的创新提供良好的平台，是今后网络架构发展的方向。然而，传统网络却有着基础设施完善、资源丰富的优势。所以，研究SDN/OpenFlow与传统网络的融合具有重大的意义。
但是，通过上述可知SDN/OpenFlow诞生至今才几年，对SDN/OpenFlow与传统网络融合的SDN过渡网络(SDN Migration Network)研究就更为不足，所以，至今尚未涉及在SDN/OpenFlow与传统网络融合的SDN过渡网络方案中如何既保证普通用户正常的使用传统业务，又对贵宾用户提供高质量、精细化流转发的智能路由业务，即，实现按需调整网络路径以提高服务质量，文中定义需要进行精细化流转发的业务称为智能路由业务，而将不需要进行精细化流转发的业务称为普通业务。例如，某个用户原来以普通用户方式观看视频，现在该用户希望升级为贵宾用户，获得更多的带宽以保证观看视频的流畅性时，该用户提出智能路由业务请求，请求为该用户重新分配一条有质量保证的流转发网络路径，使得该网络路径能够保证用户获得足够的带宽观看视频。
【发明内容】
本申请主要解决的技术问题是提供流转发方法、设备以及系统，能够在SDN过渡网络上实现精细化流转发业务，按需调整网络路径以及提高服务质量。
为了解决上述问题，本申请第一方面提供了一种流转发方法所述方法应用于(SDN migration network) SDN过渡网络，所述方法包括：边界节点接收用户侧设备发送的智能路由业务请求报文，所述智能路由业务请求报文用于请求业务服务器为所述用户侧设备提供智能路由业务，所述智能路由业务请求报文包括建立所述智能路由业务所需的约束条件；如果所述边界节点在流表中没有查找到所述智能路由业务请求报文中的特征信息对应的匹配流表项，所述对应的匹配流表项包括所述特征信息，则所述边界节点向控制器发送第一消息，所述第一消息包括所述特征信息和所述边界节点的标识信息；所述边界节点为在所述SDN过渡网络中接收所述智能路由业务请求报文的入边界节点或出边界节点；所述边界节点接收所述控制器发送的第一流表项，所述第一流表项根据所述第一消息生成且满足所述约束条件；所述边界节点根据所述第一流表项处理所述用户侧设备发来的报文。
结合第一方面，本申请的第一方面的第一种可能的实施方式中，所述第一消息包括所述特征信息和所述边界节点的标识信息具体为：所述第一消息包括所述智能路由业务请求报文和所述边界节点的标识信息，其中，所述智能路由业务请求报文包含所述特征信息。
结合第一方面，本申请的第一方面的第二种可能的实施方式中，所述第一消息还包括所述智能路由业务请求报文。
结合第一方面，本申请的第一方面的第三种可能的实施方式中，所述第一消息包括所述特征信息和所述边界节点的标识信息具体为：所述第一消息包括所述智能路由业务请求报文的镜像报文和所述边界节点的标识信息，其中，所述智能路由业务请求报文的镜像报文为所述智能路由业务请求报文的复制报文，所述智能路由业务请求报文包含所述特征信息；所述方法还包括：所述边界节点根据传统IP路由方式发送所述智能路由业务请求报文。
结合第一方面，本申请的第一方面的第四种可能的实施方式中，所述第一消息还包括所述智能路由业务请求报文的镜像报文，其中，所述智能路由业务请求报文的镜像报文为所述智能路由业务请求报文的复制报文，所述方法还包括：所述边界节点根据传统IP路由方式发送所述智能路由业务请求报文。
结合第一方面或第一方面的第一种至第四种任意一种可能的实施方式，本申请的第一方面的第五种可能的实施方式中，所述第一消息还包括接收所述智能路由业务请求报文的接口的接口属性信息，所述接口属性信息用于识别所述边界节点为所述智能路由业务请求报文在所述SDN过渡网络的入边界节点或出边界节点。
结合第一方面第一种可能的实施方式或者第一方面的第二种可能的实施方式，本申请的第一方面的第六种可能的实施方式中，所述方法还包括：所述边界节点接收所述控制器发送的第二消息，所述第二消息包括所述智能路由业务请求报文；所述边界节点根据传统IP路由方式发送所述智能路由业务请求报文。
结合第一方面或者第一方面的第一种至第六种任意一种可能的实施方式，本申请的第一方面的第七种可能的实施方式中，所述特征信息至少包括所述智能路由业务请求报文中的以下一种：源地址、目的地址、源端口、目的端口以及协议号。
为了解决上述问题，本申请第二方面提供了一种流转发方法，所述方法应用于SDN过渡网络，所述方法包括：边界节点接收用户侧设备发送的业务报文；所述边界节点在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的；所述边界节点向控制器发送第一消息，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息，所述接口属性信息用于识别所述边界节点为所述业务报文在所述SDN过渡网络的入边界节点或出边界节点；所述边界节点接收所述控制器发送的第二流表项，所述第二流表项满足所述智能路由业务请求报文中的约束条件；所述边界节点根据所述第二流表项处理所述业务报文。
结合第二方面，本申请第二方面的第一种可能的实施方式中，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口属性信息具体为：所述第一消息包括所述业务报文的镜像报文和所述边界节点的标识信息，其中，所述业务报文的镜像报文为所述业务报文的复制报文，所述业务报文包含所述特征信息；所述方法还包括：所述边界节点根据传统IP路由方式发送所述业务报文。
结合第二方面，本申请第二方面的第二种可能的实施方式中，所述第一消息还包括所述业务报文的镜像报文，其中，所述业务报文的镜像报文为所述业务报文的复制报文，所述方法还包括：所述边界节点根据传统IP路由方式发送所述业务报文。
结合第二方面或者第二方面的第一种或者第二方面的第二种可能的实施方式，本申请第二方面的第三种可能的实施方式中，所述特征信息至少包括所述业务请求报文中的以下一种：源地址、目的地址、源端口、目的端口以及协议号。
为了解决上述问题，本申请第三方面提供了一种流转发方法，所述方法应用于SDN过渡网络，该方法包括：控制器接收第一边界节点发送的第一消息，所述第一消息包括用户侧设备发送的报文的特征信息和所述第一边界节点的标识信息；所述控制器接收第二边界节点发送的第二消息，所述第二消息包括所述特征信息和所述第二边界节点的标识信息；所述控制器确定所述第一边界节点为在所述SDN过渡网络中接收所述报文的入边界节点；所述第二边界节点为在所述SDN过渡网络中接收所述报文的出边界节点；所述控制器根据所述第一边界节点的标识信息，所述第二边界节点的标识信息和策略控制因子计算出所述特征信息对应的智能路由业务流所需经过的流转发路径；所述控制器为经过所述流转发路径上的每个节点分别生成各自对应的流表项，将所述流表项分别发送给对应的节点，其中，所述策略控制因子是根据所述用户侧设备发送的智能路由业务请求报文中的约束条件确定。
结合第三方面，本申请第三方面的第一种可能的实施方式中，当所述报文为所述智能路由业务请求报文时，所述控制器确定所述第一边界节点为入边界节点；所述第二边界节点为出边界节点具体包括：所述控制器根据接收到所述第一消息和第二消息的先后顺序确定所述第一边界节点为入边界节点和所述第二边界节点为出边界节点。
结合第三方面，本申请第三方面的第二种可能的实施方式中，所述第一消息还包括所述第一边界节点接收所述报文的第一接口的第一接口属性信息，所述第一接口属性信息用于识别所述第一边界节点为所述报文在所述SDN过渡网络的入节点；所述第二消息还包括所述第二边界节点接收所述报文的第二接口的第二接口属性信息，所述第二接口属性信息用于识别所述第二边界节点为所述业务报文在所述SDN过渡网络的出节点；所述控制器确定所述第一边界节点为入边界节点；所述第二边界节点为出边界节点具体包括：所述控制器根据接收到所述第一接口属性信息和第二接口属性信息确定所述第一边界节点为入边界节点和所述第二边界节点为出边界节点。
结合第三方面的第二种可能的实施方式，本申请第三方面的第三种可能的实施方式中，还包括，当所述报文为业务报文时，所述控制器向所述第一边界节点和所述第二边界节点分别发送第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的。
结合第三方面或者第三方面的第一种至第三种任意一种可能的实施方式，本申请第三方面的第四种可能的实施方式中，该方法还包括：所述控制器接收策略服务器发送的所述策略控制因子和所述特征信息。
为了解决上述问题，本申请第四方面提供了一种流转发系统方法，所述方法应用于(SDN migration network) SDN过渡网络，所述方法包括如下步骤：第一边界节点接收用户侧设备发送的智能路由业务请求报文，所述智能路由业务请求报文用于请求业务服务器为所述用户侧设备提供智能路由业务，所述智能路由业务请求报文包括建立所述智能路由业务所需的约束条件；如果所述第一边界节点在流表中没有查找到所述智能路由业务请求报文中的特征信息对应的匹配流表项，所述对应的匹配流表项包括所述特征信息，则所述第一边界节点向控制器发送第一消息，所述第一消息包括所述特征信息和所述第一边界节点的标识信息；所述控制器接收所述第一边界节点发送的所述第一消息；第二边界节点接收所述第一边界节点转发的用户侧设备发送的智能路由业务请求报文；如果所述第二边界节点在流表中没有查找到所述智能路由业务请求报文中的特征信息对应的匹配流表项，所述对应的匹配流表项包括所述特征信息，则所述第二边界节点向控制器发送第二消息，所述第二消息包括所述特征信息和所述第二边界节点的标识信息；所述控制器接收所述第二边界节点发送的所述第二消息；所述控制器确定所述第一边界节点为在所述SDN过渡网络中接收所述报文的入边界节点；所述第二边界节点为在所述SDN过渡网络中接收所述报文的出边界节点；所述控制器根据所述第一边界节点的标识信息，所述第二边界节点的标识信息和策略控制因子计算出所述特征信息对应的智能路由业务流所需经过的流转发路径，其中，所述策略控制因子是根据所述用户侧设备发送的智能路由业务请求报文中的约束条件确定；所述控制器为经过所述流转发路径上的每个节点分别生成各自对应的流表项，将所述流表项分别发送给对应的节点，所述节点包括所述第一边界节点以及所述第二边界节点；所述第一边界节点以及第二边界节点接收所述控制器发送的流表项；所述第一边界节点以及第二边界节点根据所述流表项处理所述用户侧设备发来的报文。
为了解决上述问题，本申请第五方面提供了一种流转发方法，所述方法应用于(SDN migration network) SDN过渡网络，所述方法包括如下步骤：第一边界节点接收用户侧设备发送的业务报文；所述第一边界节点在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的；所述第一边界节点向控制器发送第一消息，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息；所述控制器接收第一边界节点发送的第一消息；第二边界节点接收所述第一边界节点转发的用户侧设备发送的业务报文；所述第二边界节点在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第二边界节点向控制器发送第二消息，所述第二消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息；所述控制器接收第二边界节点发送的第二消息；所述控制器确定所述第一边界节点为在所述SDN过渡网络中接收所述报文的入边界节点；所述第二边界节点为在所述SDN过渡网络中接收所述报文的出边界节点；所述控制器根据所述第一边界节点的标识信息，所述第二边界节点的标识信息和策略控制因子计算出所述特征信息对应的智能路由业务流所需经过的流转发路径；所述控制器为经过所述流转发路径上的每个节点分别生成各自对应的第二流表项，将所述第二流表项分别发送给对应的节点，其中，所述策略控制因子是根据所述用户侧设备发送的智能路由业务请求报文中的约束条件确定，所述节点包括第一边界节点以及第二边界节点；所述第一边界节点以及第二边界节点接收所述控制器发送的第二流表项，所述第二流表项满足所述智能路由业务请求报文中的约束条件；所述第一边界节点以及第二边界节点根据所述第二流表项处理所述业务报文。
为了解决上述问题，本申请第六方面提供了一种混合转发设备，所述设备包括：第一接收模块、查找接收模块、第二接收模块以及处理模块，所述第一接收模块用于接收用户侧设备发送的智能路由业务请求报文，所述智能路由业务请求报文用于请求业务服务器为所述用户侧设备提供智能路由业务，所述智能路由业务请求报文包括建立所述智能路由业务所需的约束条件，所述第一接收模块将所述智能路由业务请求报文向所述查找接收模块发送；所述查找接收模块用于接收所述智能路由业务请求报文，在所述边界节点在流表中没有查找到所述智能路由业务请求报文中的特征信息对应的匹配流表项时，所述对应的匹配流表项包括所述特征信息，所述边界节点向控制器发送第一消息，所述第一消息包括所述特征信息和所述边界节点的标识信息，所述边界节点为在所述SDN过渡网络中接收所述智能路由业务请求报文的入边界节点或出边界节点；所述第二接收模块用于接收所述控制器发送的第一流表项，所述第一流表项根据所述第一消息生成且满足所述约束条件，所述第二接收模块将所述第一流表项发送给所述处理模块；所述处理模块用于接收所述第一流表项，根据所述第一流表项处理所述用户侧设备发来的报文。
结合第六方面，本申请的第六方面的第一种可能的实施方式中，所述第一消息包括所述特征信息和所述边界节点的标识信息具体为：所述第一消息包括所述智能路由业务请求报文和所述边界节点的标识信息，其中，所述智能路由业务请求报文包含所述特征信息。
结合第六方面，本申请的第六方面的第二种可能的实施方式中，所述第一消息还包括所述智能路由业务请求报文。
结合第六方面，本申请的第六方面的第三种可能的实施方式中，所述第一消息包括所述特征信息和所述边界节点的标识信息具体为：所述第一消息包括所述智能路由业务请求报文的镜像报文和所述边界节点的标识信息，其中，所述智能路由业务请求报文的镜像报文为所述智能路由业务请求报文的复制报文，所述智能路由业务请求报文包含所述特征信息；所述处理模块还用于根据传统IP路由方式发送所述智能路由业务请求报文。
结合第六方面，本申请的第六方面的第四种可能的实施方式中，所述第一消息包括所述特征信息和所述边界节点的标识信息具体为：所述第一消息包括所述智能路由业务请求报文的镜像报文和所述边界节点的标识信息，其中，所述智能路由业务请求报文的镜像报文为所述智能路由业务请求报文的复制报文，所述智能路由业务请求报文包含所述特征信息；所述处理模块还用于所述边界节点根据传统IP路由方式发送所述智能路由业务请求报文。
结合第六方面或第六方面的第一种至第四种任意一种可能的实施方式，本申请的第六方面的第五种可能的实施方式中，所述第一消息还包括接收所述智能路由业务请求报文的接口的接口属性信息，所述接口属性信息用于识别所述边界节点为所述智能路由业务请求报文在所述SDN过渡网络的入边界节点或出边界节点。
结合第六方面第一种可能的实施方式或者第六方面的第二种可能的实施方式，本申请的第六方面的第六种可能的实施方式中，所述设备还包括第三接收模块，所述第三接收模块接收所述控制器发送的第二消息，所述第二消息包括所述智能路由业务请求报文；所述处理模块根据传统IP路由方式发送所述智能路由业务请求报文。
结合第六方面或者第六方面的第一种至第六种任意一种可能的实施方式，本申请的第六方面的第七种可能的实施方式中，所述特征信息至少包括所述智能路由业务请求报文中的以下一种：源地址、目的地址、源端口、目的端口以及协议号。
为了解决上述问题，本申请第七方面提供了一种混合转发设备，所述设备包括：第一接收模块、查找模块、发送模块、第二接收模块以及处理模块，所述第一接收模块用于接收用户侧设备发送的业务报文，所述第一接收模块将所述业务报文向所述查找模块发送；所述查找模块用于接收所述业务报文，在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的；所述查找模块将查找结果向所述发送模块发送；所述发送模块用于接收所述查找结果，向控制器发送第一消息，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息，所述接口属性信息用于识别所述边界节点为所述业务报文在所述SDN过渡网络的入边界节点或出边界节点；所述第二接收模块用于接收所述控制器发送的第二流表项，所述第二流表项满足所述智能路由业务请求报文中的约束条件，所述第二接收模块将所述第二流表项向所述处理模块发送；所述处理模块用于接收所述第二流表项，根据所述第二流表项处理所述业务报文。
结合第七方面，本申请第七方面的第一种可能的实施方式中，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口属性信息具体为：所述第一消息包括所述业务报文的镜像报文和所述边界节点的标识信息，其中，所述业务报文的镜像报文为所述业务报文的复制报文，所述业务报文包含所述特征信息；所述处理模块还用于所述边界节点根据传统IP路由方式发送所述业务报文。
结合第七方面，本申请第七方面的第二种可能的实施方式中，所述第一消息还包括所述业务报文的镜像报文，其中，所述业务报文的镜像报文为所述业务报文的复制报文，所述处理模块还用于根据传统IP路由方式发送所述业务报文。
结合第七方面或者第七方面的第一种或者第七方面的第二种可能的实施方式，本申请第七方面的第三种可能的实施方式中，所述特征信息至少包括所述业务请求报文中的以下一种：源地址、目的地址，源端口、目的端口以及协议号。
为了解决上述问题，本申请第八方面提供了一种控制器，所述控制器还包括：接收模块、确定模块、计算模块以及发送模块，所述接收模块用于接收第一边界节点发送的第一消息，所述第一消息包括用户侧设备发送的报文的特征信息和所述第一边界节点的标识信息，以及接收第二边界节点发送的第二消息，所述第二消息包括所述特征信息和所述第二边界节点的标识信息，所述接收模块将所述第一消息和第二消息向所述确定模块；所述确定模块用于确定所述第一边界节点为在所述SDN过渡网络中接收所述报文的入边界节点，所述第二边界节点为在所述SDN过渡网络中接收所述报文的出边界节点，所述确定模块将确定的结果向所述计算模块发送；所述计算模块用于接收所述确定的结果，为经过所述流转发路径上的每个节点分别生成各自对应的流表项，所述计算模块将所述流表项发送给所述发送模块；所述发送模块用于接收所述流表项，将所述流表项分别发送给对应的节点，其中，所述策略控制因子是根据所述用户侧设备发送的智能路由业务请求报文中的约束条件确定。
结合第八方面，本申请第八方面的第一种可能的实施方式中，所述确定模块还用于当所述报文为所述智能路由业务请求报文时，根据接收到所述第一消息和第二消息的先后顺序确定所述第一边界节点为入边界节点和所述第二边界节点为出边界节点。
结合第八方面，本申请第八方面的第二种可能的实施方式中，所述第一消息还包括所述第一边界节点接收所述报文的第一接口的第一接口属性信息，所述第一接口属性信息用于识别所述第一边界节点为所述报文在所述SDN过渡网络的入节点；所述第二消息还包括所述第二边界节点接收所述报文的第二接口的第二接口属性信息，所述第二接口属性信息用于识别所述第二边界节点为所述业务报文在所述SDN过渡网络的出节点；所述处理模块还用于根据接收到所述第一接口属性信息和第二接口属性信息确定所述第一边界节点为入边界节点和所述第二边界节点为出边界节点。
结合第八方面的第二种可能的实施方式，本申请第八方面的第三种可能的实施方式中，所述发送模块还用于当所述报文为业务报文时，向所述第一边界节点和所述第二边界节点分别发送第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的。
结合第八方面或者第八方面的第一种至第三种任意一种可能的实施方式，本申请第八方面的第四种可能的实施方式中，所述接收模块还用于接收策略服务器发送的所述策略控制因子和所述特征信息。
为了解决上述问题，本申请第九方面提供了一种流转发系统，包括多个混合转发设备以及控制器，所述多个混合转发设备之间拓扑连接构成SDN过渡网络，位于SDN过渡网络边界的混合转发设备为边界节点，所述边界节点与所述控制器能够进行通信，所述边界节点包括第一边界节点以及第二边界节点，第一边界节点接收用户侧设备发送的智能路由业务请求报文，所述智能路由业务请求报文用于请求业务服务器为所述用户侧设备提供智能路由业务，所述智能路由业务请求报文包括建立所述智能路由业务所需的约束条件；如果所述第一边界节点在流表中没有查找到所述智能路由业务请求报文中的特征信息对应的匹配流表项，所述对应的匹配流表项包括所述特征信息，则所述第一边界节点向控制器发送第一消息，所述第一消息包括所述特征信息和所述第一边界节点的标识信息；所述控制器接收所述第一边界节点发送的所述第一消息；第二边界节点接收所述第一边界节点转发的用户侧设备发送的智能路由业务请求报文；如果所述第二边界节点在流表中没有查找到所述智能路由业务请求报文中的特征信息对应的匹配流表项，所述对应的匹配流表项包括所述特征信息，则所述第二边界节点向控制器发送第二消息，所述第二消息包括所述特征信息和所述第二边界节点的标识信息；所述控制器接收所述第二边界节点发送的所述第二消息；所述控制器确定所述第一边界节点为在所述SDN过渡网络中接收所述报文的入边界节点；所述第二边界节点为在所述SDN过渡网络中接收所述报文的出边界节点；所述控制器根据所述第一边界节点的标识信息，所述第二边界节点的标识信息和策略控制因子计算出所述特征信息对应的智能路由业务流所需经过的流转发路径，其中，所述策略控制因子是根据所述用户侧设备发送的智能路由业务请求报文中的约束条件确定；所述控制器为经过所述流转发路径上的每个节点分别生成各自对应的流表项，将所述流表项分别发送给对应的节点，所述节点包括所述第一边界节点以及所述第二边界节点；所述第一边界节点以及第二边界节点接收所述控制器发送的流表项；所述第一边界节点以及第二边界节点根据所述流表项处理所述用户侧设备发来的报文。
为了解决上述问题，本申请第十方面提供了一种流转发系统，包括多个混合转发设备以及控制器，所述多个混合转发设备之间拓扑连接构成SDN过渡网络，位于SDN过渡网络边界的混合转发设备为边界节点，所述边界节点与所述控制器能够进行通信，所述边界节点包括第一边界节点以及第二边界节点，第一边界节点接收用户侧设备发送的业务报文；所述第一边界节点在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的；所述第一边界节点向控制器发送第一消息，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息；所述控制器接收第一边界节点发送的第一消息；第二边界节点接收所述第一边界节点转发的用户侧设备发送的业务报文；所述第二边界节点在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第二边界节点向控制器发送第二消息，所述第二消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息；所述控制器接收第二边界节点发送的第二消息；所述控制器确定所述第一边界节点为在所述SDN过渡网络中接收所述报文的入边界节点；所述第二边界节点为在所述SDN过渡网络中接收所述报文的出边界节点；所述控制器根据所述第一边界节点的标识信息，所述第二边界节点的标识信息和策略控制因子计算出所述特征信息对应的智能路由业务流所需经过的流转发路径；所述控制器为经过所述流转发路径上的每个节点分别生成各自对应的第二流表项，将所述第二流表项分别发送给对应的节点，其中，所述策略控制因子是根据所述用户侧设备发送的智能路由业务请求报文中的约束条件确定，所述节点包括第一边界节点以及第二边界节点；所述第一边界节点以及第二边界节点接收所述控制器发送的第二流表项，所述第二流表项满足所述智能路由业务请求报文中的约束条件；所述第一边界节点以及第二边界节点根据所述第二流表项处理所述业务报文。
为了解决上述问题，本申请第十一方面提供了一种混合转发设备，所述设备包括：接收器、处理器以及发送器，所述接收器用于接收用户侧设备发送的智能路由业务请求报文，所述智能路由业务请求报文用于请求业务服务器为所述用户侧设备提供智能路由业务，所述智能路由业务请求报文包括建立所述智能路由业务所需的约束条件；所述处理器用于在所述边界节点在流表中没有查找到所述智能路由业务请求报文中的特征信息对应的匹配流表项时，所述对应的匹配流表项包括所述特征信息，所述发送器用于向控制器发送第一消息，所述第一消息包括所述特征信息和所述边界节点的标识信息，所述边界节点为在所述SDN过渡网络中接收所述智能路由业务请求报文的入边界节点或出边界节点；所述接收器还用于接收所述控制器发送的第一流表项，所述第一流表项根据所述第一消息生成且满足所述约束条件；所述处理器用于根据所述第一流表项处理所述用户侧设备发来的报文。
结合第十一方面，本申请的第十一方面的第一种可能的实施方式中，所述第一消息包括所述特征信息和所述边界节点的标识信息具体为：所述第一消息包括所述智能路由业务请求报文和所述边界节点的标识信息，其中，所述智能路由业务请求报文包含所述特征信息。
结合第十一方面，本申请的第十一方面的第二种可能的实施方式中，所述第一消息还包括所述智能路由业务请求报文。
结合第十一方面，本申请的第十一方面的第三种可能的实施方式中，所述第一消息包括所述特征信息和所述边界节点的标识信息具体为：所述第一消息包括所述智能路由业务请求报文的镜像报文和所述边界节点的标识信息，其中，所述智能路由业务请求报文的镜像报文为所述智能路由业务请求报文的复制报文，所述智能路由业务请求报文包含所述特征信息；所述处理器还用于根据传统IP路由方式发送所述智能路由业务请求报文。
结合第十一方面，本申请的第十一方面的第四种可能的实施方式中，所述第一消息包括所述特征信息和所述边界节点的标识信息具体为：所述第一消息包括所述智能路由业务请求报文的镜像报文和所述边界节点的标识信息，其中，所述智能路由业务请求报文的镜像报文为所述智能路由业务请求报文的复制报文，所述智能路由业务请求报文包含所述特征信息；所述处理器还用于所述边界节点根据传统IP路由方式发送所述智能路由业务请求报文。
结合第十一方面或第十一方面的第一种至第四种任意一种可能的实施方式，本申请的第六方面的第五种可能的实施方式中，所述第一消息还包括接收所述智能路由业务请求报文的接口的接口属性信息，所述接口属性信息用于识别所述边界节点为所述智能路由业务请求报文在所述SDN过渡网络的入边界节点或出边界节点。
结合第十一方面第一种可能的实施方式或者第十一方面的第二种可能的实施方式，本申请的第十一方面的第六种可能的实施方式中，所述接收器还用于接收所述控制器发送的第二消息，所述第二消息包括所述智能路由业务请求报文；所述处理器根据传统IP路由方式发送所述智能路由业务请求报文。
结合第十一方面或者第十一方面的第一种至第六种任意一种可能的实施方式，本申请的第十一方面的第七种可能的实施方式中，所述特征信息至少包括所述智能路由业务请求报文中的以下一种：源地址、目的地址、源端口、目的端口以及协议号。
为了解决上述问题，本申请第十二方面提供了一种混合转发设备，所述设备包括：接收器、处理器以及发送器，所述接收器用于接收用户侧设备发送的业务报文；所述处理器用于接收所述业务报文，在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的；所述发送器用于向控制器发送第一消息，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息，所述接口属性信息用于识别所述边界节点为所述业务报文在所述SDN过渡网络的入边界节点或出边界节点；所述接收器还用于接收所述控制器发送的第二流表项，所述第二流表项满足所述智能路由业务请求报文中的约束条件；所述处理器用于根据所述第二流表项处理所述业务报文。
结合第十二方面，本申请第十二方面的第一种可能的实施方式中，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口属性信息具体为：所述第一消息包括所述业务报文的镜像报文和所述边界节点的标识信息，其中，所述业务报文的镜像报文为所述业务报文的复制报文，所述业务报文包含所述特征信息；所述处理器还用于所述边界节点根据传统IP路由方式发送所述业务报文。
结合第十二方面，本申请第十二方面的第二种可能的实施方式中，所述第一消息还包括所述业务报文的镜像报文，其中，所述业务报文的镜像报文为所述业务报文的复制报文，所述处理器还用于根据传统IP路由方式发送所述业务报文。
结合第十二方面或者第十二方面的第一种或者第十二方面的第二种可能的实施方式，本申请第十二方面的第三种可能的实施方式中，所述特征信息至少包括所述业务请求报文中的以下一种：源地址、目的地址，源端口、目的端口以及协议号。
为了解决上述问题，本申请第十三方面提供了一种控制器，所述控制器还包括：接收器、处理器以及发送器，所述接收器用于接收第一边界节点发送的第一消息，所述第一消息包括用户侧设备发送的报文的特征信息和所述第一边界节点的标识信息，以及接收第二边界节点发送的第二消息，所述第二消息包括所述特征信息和所述第二边界节点的标识信息；所述处理器用于确定所述第一边界节点为在所述SDN过渡网络中接收所述报文的入边界节点，所述第二边界节点为在所述SDN过渡网络中接收所述报文的出边界节点，所述处理器还用于为经过所述流转发路径上的每个节点分别生成各自对应的流表项，所述发送器用于将所述流表项分别发送给对应的节点，其中，所述策略控制因子是根据所述用户侧设备发送的智能路由业务请求报文中的约束条件确定。
结合第十三方面，本申请第十三方面的第一种可能的实施方式中，所述处理器还用于当所述报文为所述智能路由业务请求报文时，根据接收到所述第一消息和第二消息的先后顺序确定所述第一边界节点为入边界节点和所述第二边界节点为出边界节点。
结合第十三方面，本申请第十三方面的第二种可能的实施方式中，所述第一消息还包括所述第一边界节点接收所述报文的第一接口的第一接口属性信息，所述第一接口属性信息用于识别所述第一边界节点为所述报文在所述SDN过渡网络的入节点；所述第二消息还包括所述第二边界节点接收所述报文的第二接口的第二接口属性信息，所述第二接口属性信息用于识别所述第二边界节点为所述业务报文在所述SDN过渡网络的出节点；所述处理器还用于根据接收到所述第一接口属性信息和第二接口属性信息确定所述第一边界节点为入边界节点和所述第二边界节点为出边界节点。
结合第十三方面的第二种可能的实施方式，本申请第十三方面的第三种可能的实施方式中，所述发送器还用于当所述报文为业务报文时，向所述第一边界节点和所述第二边界节点分别发送第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的。
结合第十三方面或者第十三方面的第一种至第三种任意一种可能的实施方式，本申请第八方面的第四种可能的实施方式中，所述接收器还用于接收策略服务器发送的所述策略控制因子和所述特征信息。
为了解决上述问题，本申请第十四方面提供了一种流转发方法，所述方法应用于SDN过渡网络，所述方法包括：边界节点接收用户侧设备发送的业务报文；所述边界节点在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据预先设置的智能路由业务对象生成的；所述边界节点向控制器发送第一消息，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息，所述接口属性信息用于识别所述边界节点为所述业务报文在所述SDN过渡网络的入边界节点或出边界节点；所述边界节点接收所述控制器发送的第二流表项，所述第二流表项满足所述用户侧设备发送的智能路由业务请求报文中的约束条件；所述边界节点根据所述第二流表项处理所述业务报文。
结合第十四方面，本申请第十四方面的第一种可能的实施方式中，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口属性信息具体为：所述第一消息包括所述业务报文的镜像报文和所述边界节点的标识信息，其中，所述业务报文的镜像报文为所述业务报文的复制报文，所述业务报文包含所述特征信息；所述方法还包括：所述边界节点根据传统IP路由方式发送所述业务报文。
结合第十四方面，本申请第十四方面的第二种可能的实施方式中，所述第一消息还包括所述业务报文的镜像报文，其中，所述业务报文的镜像报文为所述业务报文的复制报文，所述方法还包括：根据传统IP路由方式发送所述业务报文。
结合第十四方面、第十四方面的第一种以及第十四方面的第二种可能的实施方式，本申请第十四方面的第三种可能的实施方式中，所述特征信息至少包括所述业务请求报文中的以下一种：源地址、目的地址，源端口、目的端口以及协议号。
为了解决上述问题，本申请第十五方面提供了一种混合转发设备，所述设备包括：第一接收模块、查找模块、发送模块、第二接收模块以及处理模块，所述第一接收模块用于接收用户侧设备发送的业务报文，所述第一接收模块将所述业务报文向所述查找模块发送；所述查找模块用于接收所述业务报文，在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据预先设置的智能路由业务对象生成的；所述查找模块将查找结果向所述发送模块发送；所述发送模块用于接收所述查找结果，向控制器发送第一消息，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息，所述接口属性信息用于识别所述边界节点为所述业务报文在所述SDN过渡网络的入边界节点或出边界节点；所述第二接收模块用于接收所述控制器发送的第二流表项，所述第二流表项满足所述用户侧设备发送的智能路由业务请求报文中的约束条件，所述第二接收模块将所述第二流表项向所述处理模块发送；所述处理模块用于接收所述第二流表项，根据所述第二流表项处理所述业务报文。
结合第十五方面，本申请第十五方面的第一种可能的实施方式中，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口属性信息具体为：所述第一消息包括所述业务报文的镜像报文和所述边界节点的标识信息，其中，所述业务报文的镜像报文为所述业务报文的复制报文，所述业务报文包含所述特征信息；所述处理模块还用于所述边界节点根据传统IP路由方式发送所述业务报文。
结合第十五方面，本申请第十五方面的第二种可能的实施方式中，所述第一消息还包括所述业务报文的镜像报文，其中，所述业务报文的镜像报文为所述业务报文的复制报文，所述处理模块还用于根据传统IP路由方式发送所述业务报文。
结合第十五方面或者第十五方面的第一种或者第十五方面的第二种可能的实施方式，本申请第十五方面的第三种可能的实施方式中，所述特征信息至少包括所述业务请求报文中的以下一种：源地址、目的地址，源端口、目的端口以及协议号。
为了解决上述问题，本申请第十六方面提供了一种混合转发设备，所述设备包括：接收器、处理器以及发送器，所述接收器用于接收用户侧设备发送的业务报文；所述处理器用于接收所述业务报文，在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据预先设置的智能路由业务对象生成的；所述发送器用于向控制器发送第一消息，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息，所述接口属性信息用于识别所述边界节点为所述业务报文在所述SDN过渡网络的入边界节点或出边界节点；所述接收器还用于接收所述控制器发送的第二流表项，所述第二流表项满足所述用户侧设备发送的智能路由业务请求报文中的约束条件；所述处理器用于根据所述第二流表项处理所述业务报文。
结合第十六方面，本申请第十六方面的第一种可能的实施方式中，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口属性信息具体为：所述第一消息包括所述业务报文的镜像报文和所述边界节点的标识信息，其中，所述业务报文的镜像报文为所述业务报文的复制报文，所述业务报文包含所述特征信息；所述处理器还用于所述边界节点根据传统IP路由方式发送所述业务报文。
结合第十六方面，本申请第十六方面的第二种可能的实施方式中，所述第一消息还包括所述业务报文的镜像报文，其中，所述业务报文的镜像报文为所述业务报文的复制报文，所述处理器还用于根据传统IP路由方式发送所述业务报文。
结合第十六方面或者第十六方面的第一种或者第十六方面的第二种可能的实施方式，本申请第十六方面的第三种可能的实施方式中，所述特征信息至少包括所述业务请求报文中的以下一种：源地址、目的地址，源端口、目的端口以及协议号。
上述方案中创造性地提出了控制器根据第一边界节点的标识信息、第二边界节点的标识信息以及策略控制因子计算出智能路由业务流转发路径的方式，将传统的查找IP路由表的转发方式和查找高质量服务保证流表的流转发方式相结合，既不影响传统的IP转发，保证了网络的可靠性，又为贵宾客户提供了高质量的流转发服务。该创新方法在SDN过渡网络上实现精细化流转发业务，按需调整网络路径以及提高服务质量，填补了该领域上的空白。
【附图说明】
图1是本申请流转发系统一实施方式的结构示意图；
图2是采用图1所示的流转发系统实现智能路由业务的一实施方式的示意图；
图3是采用图1所示的流转发系统实现智能路由业务的另一实施方式的示意图；
图4是采用图1所示的流转发系统实现智能路由业务的再一实施方式的示意图；
图5是采用图1所示的流转发系统实现智能路由业务的又一实施方式的示意图；
图6是本申请流转发方法一实施方式的流程图；
图7是本申请流转发方法另一实施方式的流程图；
图8是本申请流转发方法再一实施方式的流程图；
图9是本申请混合转发设备一实施方式的结构示意图；
图10是本申请混合转发设备另一实施方式的结构示意图；
图11是本申请控制器一实施方式的结构示意图；
图12是本申请混合转发设备再一实施方式的结构示意图；
图13是本申请混合转发设备又一实施方式的结构示意图；
图14是本申请控制器另一实施方式的结构示意图。
【具体实施方式】
以下描述中，为了说明而不是为了限定，提出了诸如特定系统结构、接口、技术之类的具体细节，以便透彻理解本申请。然而，本领域的技术人员应当清楚，在没有这些具体细节的其它实施方式中也可以实现本申请。在其它情况中，省略对众所周知的装置、电路以及方法的详细说明，以免不必要的细节妨碍本申请的描述。
参阅图1，图1是本申请流转发系统一实施方式的结构示意图。本实施方式的流转发系统用于SDN过渡网络，包括用户端110、多个混合转发设备121拓扑连接所组成的SDN过渡网络120、应用服务器130、策略服务器140以及控制器150。其中，混合转发设备121既能实现传统网络的IP路由转发功能，也能实现SDN/OpenFlow网络的的流转发功能。混合转发设备121的外连接口用于与SDN过渡网络120外的设备连接。混合转发设备121的内连接口用于与SDN过渡网络120内部的其它混合转发设备121连接。位于SDN过渡网络120边界的混合转发设备121为边界节点。
用户端110直接连接到SDN过渡网络120的其中一个边界节点的外连接口，SDN过渡网络120内的多个混合转发设备121通过内连接口拓扑连接，SDN过渡网络120的另一个边界节点通过其外连接口直接连接应用服务器130。应用服务器130连接策略服务器140，策略服务器140连接控制器150，控制器150连接SDN过渡网络120内中的任意一个混合转发设备121。SDN过渡网络SDN过渡网络
参阅图2，图2是采用图1所示的流转发系统实现智能路由业务的一实施方式的示意图。
本实施方式中，将边界节点的外连接口设置为在流表中没有查找到智能路由业务请求报文中的特征信息对应的匹配流表项时，边界节点向控制器发送第一消息，第一消息包括特征信息和边界节点的标识信息；将边界节点的内连接口设置为即使在流表中没有查找到特征信息时，不向控制器发送智能路由业务请求报文的特征信息。其中，特征信息至少包括智能路由业务请求报文中的以下一种：源地址、目的地址，源端口、目的端口以及协议号。
在本实施方式中，第一消息封装有智能路由业务请求报文和边界节点的标识信息，而在智能路由业务请求报文中包含特征信息。而在另一种可能的实施方式中，第一消息可同时封装有智能路由业务请求报文、智能路由业务请求报文的特征信息和边界节点的标识信息。
第一消息还可以包括接收智能路由业务请求报文的接口的接口属性信息，其中，接口属性信息用于识别边界节点为智能路由业务请求报文在SDN过渡网络的入边界节点或出边界节点。具体地，从外连接口接收智能路由业务请求报文并且接口属性信息为报文是上行的边界节点为第一边界节点，从外连接口发送智能路由业务请求报文并且接口属性信息为报文是下行的边界节点为第二边界节点。
在其它的实施方式中，控制器可根据接收到消息的先后顺序确定第一边界节点为入边界节点和第二边界节点为出边界节点。
如果用户端110与应用服务器130对某个数据流进行精细化智能路由流转发传输时，第一边界节点和第二边界节点的流表中会存储有该数据流的特征信息，故第一边界节点和第二边界节点不会将智能路由业务报文向控制器150发送。只有新发起某个数据流（包括智能路由业务流和普通业务流）时，第一边界节点和第二边界节点中不会存储有新发起数据流的特征信息，第一边界节点和第二边界节点才将该数据流的业务请求报文向控制器150发送。
在平时，用户端110进行普通业务时所产生的业务报文通过与用户端110直接连接的边界节点的外连接口发送到SDN过渡网络120。在SDN过渡网络120中，业务报文按照传统网络的查找IP路由表的转发方式，并经过多个混合转发设备121的内连接口转发，发送到与应用服务器130直接连接的边界节点中。与应用服务器130直接连接的边界节点再通过外连接口发送到应用服务器130中。
当用户端110需要进行智能路由业务时，如图中点划线所构成的虚线所示，用户端110向应用服务器130发送智能路由业务请求，并产生智能路由业务请求报文，其中，智能路由业务请求报文用于请求业务服务器为用户侧设备提供智能路由业务，智能路由业务请求报文包括特征信息以及建立智能路由业务所需的约束条件，例如：用户端110所要求保证的带宽等等。
用户端110所产生的智能路由业务请求报文通过外连接口发送到与用户端110直接连接的边界节点。与用户端110直接连接的边界节点即为第一边界节点。由于此时第一边界节点的流表中尚未记载有该智能路由业务请求报文的特征信息，所以，根据初始配置“如果边界节点在流表中没有查找到智能路由业务请求报文中的特征信息对应的匹配流表项，则边界节点向控制器发送第一消息。”第一边界节点知道这是一个新提出智能路由业务请求的数据流，第一边界节点将该智能路由业务请求报文封装进第一消息发送给控制器150。其中，第一消息中包括智能路由业务请求报文以及与第一边界节点的标识信息，而且，智能路由业务请求报文中包括智能路由业务请求报文的特征信息。
控制器150接收到第一消息后，从第一消息中读出智能路由业务请求报文的特征信息以及第一边界节点的标识信息。然后，控制器150将智能路由业务请求报文封装进第二消息返回给第一边界节点。
由于此时尚未得到精细化的智能路由业务流转发路径，所以，智能路由业务请求报文按照传统的查找IP路由表的转发方式，并经过多个混合转发设备121的内连接口转发，发送到与应用服务器130直接连接的边界节点中。与应用服务器130直接连接的边界节点即为第二边界节点。
此时第二边界节点的流表中尚未记载有该智能路由业务请求报文的特征信息，所以，根据初始配置“如果边界节点在流表中没有查找到智能路由业务请求报文中的特征信息对应的匹配流表项，则边界节点向控制器发送第一消息。”第二边界节点知道这是一个新提出智能路由业务请求的数据流，第二边界节点将该智能路由业务请求报文封装进第一消息发送给控制器150。其中，第一消息中包括智能路由业务请求报文以及与第二边界节点的标识信息，而且，智能路由业务请求报文中包括智能路由业务请求报文的特征信息。
控制器150接收到第一消息后，从第一消息中读出智能路由业务请求报文的特征信息以及第二边界节点的标识信息。然后，控制器150将智能路由业务请求报文封装进第二消息返回给第二边界节点。
第二边界节点接收到第二消息后，将智能路由业务请求报文通过外连接口发送给应用服务器130。
应用服务器130接收到智能路由业务请求报文后，知道用户端110提出了智能路由业务请求，并从智能路由业务请求报文中获得建立智能路由业务所需的约束条件。所以，应用服务器130将用户端110建立智能路由业务所需的约束条件发送给策略服务器140。策略服务器140根据建立智能路由业务所需的约束条件生成策略控制因子，并将智能路由业务请求报文的特征信息以及策略控制因子封装到控制策略中，然后将控制策略发送给控制器150。控制器150接收到控制策略后，读出智能路由业务请求报文的特征信息以及策略控制因子，并根据智能路由业务请求报文的特征信息在本地查找到与该特征信息关联的第一边界节点的标识信息以及第二边界节点的标识信息。控制器150之前已经通过IGP协议侦听等方式接收了SDN过渡网络120中的混合转发设备121的拓扑连接图。控制器150根据第一边界节点的接口信息、第二边界节点的接口信息、策略控制因子以及SDN过渡网络120中的混合转发设备121的拓扑连接图计算出符合用户端110要求的智能路由业务流转发路径，为智能路由业务流转发路径上的每个节点生成对应的第一流表项，并将第一流表项分别向每个节点发送。
在生成智能路由业务流转发路径后，如图中划线所构成的虚线所示，用户端110所发送的后续的业务报文在进入SDN过渡网络120后，按照智能路由业务流转发路径进行转发，最后到达应用服务器130，从而完成数据的传输。
可以理解的是，这种实施方式下，用户端110从提出智能路由业务请求到控制器150确定智能路由业务流转发路径的时间较短，但是，由于第一边界节点和第二边界节点设置为流表中没有某个数据流的特征信息时，混合转发设备会将通过外连接口接收到的智能路由业务请求报文向控制器150发送，然后再将智能路由业务请求报文返回给第一边界节点和第二边界节点，以继续向服务端130发送。如果控制器150出现问题，控制器150不能将智能路由业务请求报文返回给第一边界节点和第二边界节点，第一边界节点和第二边界节点不能够继续将智能路由业务请求报文向应用服务器130发送，于是智能路由业务请求报文无法到达应用服务器130。此时，不仅新发起的智能路由业务会因为特征信息没有记载在流表中而受到影响，新发起的普通业务也同样因为特征信息没有记载在流表中而受到影响。
参阅图3，图3是采用图1所示的流转发系统实现智能路由业务的另一实施方式的示意图。
本实施方式中，将边界节点的外连接口设置为在流表中没有查找到智能路由业务请求报文中的特征信息对应的匹配流表项时，边界节点向控制器发送第一消息，第一消息包括特征信息和边界节点的标识信息；将边界节点的内连接口设置为即使在流表中没有查找到特征信息时，不向控制器发送智能路由业务请求报文的特征信息。其中，特征信息至少包括智能路由业务请求报文中的以下一种：源地址、目的地址，源端口、目的端口以及协议号。
在本实施方式中，第一消息封装有智能路由业务请求报文的镜像报文和边界节点的标识信息，而，智能路由业务请求报文中包含特征信息，所以，镜像报文也包含特征信息。而在另一种可能的实施方式中，第一消息可同时封装有镜像报文、特征信息和边界节点的标识信息。
第一消息还可以包括接收智能路由业务报文的接口的接口属性信息，其中，接口属性信息用于识别边界节点为智能路由业务报文在SDN过渡网络的入边界节点或出边界节点。具体地，从外连接口接收智能路由业务请求报文并且接口属性信息为报文是上行的边界节点为第一边界节点，从外连接口发送智能路由业务请求报文并且接口属性信息为报文是下行的边界节点为第二边界节点。
在其它的实施方式中，控制器可根据接收到消息的先后顺序确定第一边界节点为入边界节点和第二边界节点为出边界节点。
如果用户端110与应用服务器130对某个数据流进行精细化智能路由流转发传输时，第一边界节点和第二边界节点的流表中会存储有该数据流的特征信息，故第一边界节点和第二边界节点不会将镜像报文向控制器150发送。只有新发起某个数据流（包括智能路由业务流和普通业务流）时，第一边界节点和第二边界节点中不会存储有新发起数据流的特征信息，第一边界节点和第二边界节点才将该数据流的镜像报文向控制器150发送。
在平时，用户端110进行普通业务时所产生的业务报文通过与用户端110直接连接的边界节点的外连接口发送到SDN过渡网络120。在SDN过渡网络120中，业务报文按照传统网络的查找IP路由表的转发方式，并经过多个混合转发设备121的内连接口转发，发送到与应用服务器130直接连接的边界节点中。与应用服务器130直接连接的边界节点再通过外连接口发送到应用服务器130中。
当用户端110需要进行智能路由业务时，如图中点划线所构成的虚线所示，用户端110向应用服务器130发送智能路由业务请求，并产生智能路由业务请求报文，其中，智能路由业务请求报文用于请求业务服务器为用户侧设备提供智能路由业务，智能路由业务请求报文包括特征信息以及建立智能路由业务所需的约束条件，例如：用户端110所要求保证的带宽等等。
用户端110所产生的智能路由业务请求报文通过外连接口发送到与用户端110直接连接的边界节点。与用户端110直接连接的边界节点即为第一边界节点。由于此时第一边界节点的流表中尚未记载有该智能路由业务请求报文的特征信息，所以，根据初始配置“如果边界节点在流表中没有查找到智能路由业务请求报文中的特征信息对应的匹配流表项，则边界节点向控制器发送第一消息。”第一边界节点知道这是一个新提出智能路由业务请求的数据流，第一边界节点将该智能路由业务请求报文进行镜像以获得镜像报文，即，智能路由业务请求报文的镜像报文为所述智能路由业务请求报文的复制报文，然后将镜像报文封装进第一消息发送给控制器150。其中，第一消息中包括镜像报文以及与第一边界节点的标识信息，而且，智能路由业务请求报文中包括智能路由业务请求报文的特征信息，所以，镜像报文也包括特征信息。控制器150接收到第一消息后，从第一消息中读出特征信息以及第一边界节点的标识信息。而原来的智能路由业务请求报文（被镜像的智能路由业务请求报文）则不会被封装到第一消息中向控制器150发送，而是继续向应用服务器130发送。由于此时尚未得到精细化的智能路由业务流转发路径，所以，智能路由业务请求报文按照传统的查找IP路由表的转发方式，并经过多个混合转发设备121的内连接口转发，发送到与应用服务器130直接连接的边界节点中。与应用服务器130直接连接的边界节点即为第二边界节点。
此时第二边界节点的流表中尚未记载有该智能路由业务请求报文的特征信息，所以，根据初始配置“如果边界节点在流表中没有查找到智能路由业务请求报文中的特征信息对应的匹配流表项，则边界节点向控制器发送第一消息”第二边界节点知道这是一个新提出智能路由业务请求的数据流，第二边界节点将该智能路由业务请求报文进行镜像以获得镜像报文，即，智能路由业务请求报文的镜像报文为所述智能路由业务请求报文的复制报文，然后将镜像报文封装进第一消息发送给控制器150。其中，第一消息中包括镜像报文以及与第二边界节点的标识信息，而且，智能路由业务请求报文中包括智能路由业务请求报文的特征信息，所以镜像报文也包含特征信息。控制器150接收到第一消息后，从第一消息中读出特征信息以及第二边界节点的标识信息。而原来的智能路由业务请求报文则不会被封装到第一消息中向控制器150发送，而是通过第二边界节点的外连接口继续向应用服务器130发送。应用服务器130接收到智能路由业务请求报文后，知道用户端110提出了智能路由业务请求，并从智能路由业务请求报文中获得建立智能路由业务所需的约束条件。所以，应用服务器130将获得建立智能路由业务所需的约束条件发送给策略服务器140。策略服务器140解析出建立智能路由业务所需的约束条件并生成策略控制因子，并将智能路由业务流的特征信息以及策略控制因子封装到控制策略中，然后将控制策略发送给控制器150。控制器150接收到控制策略后，读出建立智能路由业务所需的约束条件以及策略控制因子，并根据智能路由业务流的特征信息在本地查找到与该特征信息关联的第一边界节点的标识信息以及第二边界节点的标识信息。控制器150之前已经通过IGP协议侦听等方式接收了SDN过渡网络120中的混合转发设备121的拓扑连接图。控制器150根据第一边界节点的标识信息、第二边界节点的标识信息、策略控制因子以及SDN过渡网络120中的混合转发设备121的拓扑连接图计算出符合用户端110要求的智能路由业务流转发路径，为智能路由业务流转发路径上的每个节点生成对应的第一流表项，并将第一流表项分别向每个节点发送。
在生成智能路由业务流转发路径后，如图中划线所构成的虚线所示，用户端110所发送的后续的智能路由业务报文在进入SDN过渡网络120后，按照智能路由业务流转发路径进行转发，最后到达应用服务器130，从而完成数据的传输。
可以理解的是，这种实施方式克服了上一实施方式如果控制器150出现问题，控制器150不能将智能路由业务请求报文返回给第一边界节点和第二边界节点以继续传输给应用服务器130时，不仅新发起的智能路由业务会受到影响，新发起的普通业务也同样会受到影响的问题。但是，在这种实施方式下，新发起的智能路由业务请求报文和普通业务请求报文都必须镜像一份给控制器150，所以，造成控制器150的负担比较重。
参阅图4，图4是采用图1所示的流转发系统实现智能路由业务的再一实施方式的示意图。
本实施方式中，控制器按需向混合转发设备121下发第一流表项，其中，第一流表项包括需要进行智能路由业务的对象的特征信息及动作，所述动作用于向所述控制器发送消息，使得具有需要进行智能路由业务的对象的特征信息的数据流进入边界节点后，用特征信息为索引查找流表，如果找到匹配流表项，则除了将报文按传统的IP路由方式转发外，还另外镜像一份报文。
在平时，用户端110进行普通业务（非新发起普通业务）时所产生的业务报文通过与用户端110直接连接的边界节点的外连接口发送到SDN过渡网络120。在SDN过渡网络120中，业务报文按照传统的查找IP路由表的转发方式，并经过多个混合转发设备121的内连接口转发，发送到与应用服务器130直接连接的边界节点中。与应用服务器130直接连接的边界节点再通过外连接口发送到应用服务器130中。
当用户端110需要进行智能路由业务时，如图中点所构成的虚线所示，用户端110向应用服务器130发送智能路由业务请求，并产生智能路由业务请求报文，其中，智能路由业务请求报文用于请求业务服务器为用户侧设备提供智能路由业务，智能路由业务请求报文包括特征信息以及建立智能路由业务所需的约束条件，例如：用户端110所要求保证的带宽等等。
用户端110所产生的智能路由业务请求报文发送到与用户端110直接连接的边界节点。由于此时与用户端110直接连接的边界节点的流表中没有记载该智能路由业务请求报文的特征信息，所以，与用户端110直接连接的边界节点将智能路由业务请求报文按传统的查找IP路由表的转发方式，并经过多个混合转发设备121的内连接口转发，发送到与应用服务器130直接连接的边界节点中。与应用服务器130直接连接的边界节点再通过外连接口发送到应用服务器130中。应用服务器130接收到智能路由业务请求报文后，知道用户端110提出了智能路由业务请求，并从智能路由业务请求报文中获得所述智能路由业务请求报文的特征信息以及建立智能路由业务所需的约束条件。所以，应用服务器130将建立智能路由业务所需的约束条件发送给策略服务器140。策略服务器140解析出建立智能路由业务所需的约束条件并生成策略控制因子，并将智能路由业务请求报文的特征信息以及策略控制因子封装到控制策略中，然后将控制策略发送给控制器150。控制器150将所述智能路由业务请求报文的特征信息记载在第一流表中，并分别向所有的混合转发设备121发送第一流表。
此时，用户端110继续向应用服务器130发送智能路由业务报文，如图中点划线所构成的虚线所示，所述智能路由业务报文发送到与用户端110直接连接的边界节点中。由于此时与用户端110直接连接的边界节点已经接收了第一流表，第一流表项中记载了该智能路由业务报文的特征信息，所以，与用户端110直接连接的边界节点将该智能路由业务报文进行镜像以获得镜像报文，再将镜像报文封装进第一消息发送给控制器150。其中，第一消息中包括镜像报文、边界节点的标识信息以及接收所述智能路由业务报文的接口的接口属性信息，而且，镜像报文包括智能路由业务报文的特征信息。接口属性信息用于识别所述边界节点为智能路由业务报文在所述SDN过渡网络的入边界节点或出边界节点。
在另一种实施方式中，第一消息可以同时包括特征信息、镜像报文、边界节点的标识信息和接收业务报文的接口的接口属性信息。
控制器150接收到第一消息后，从第一消息中读出智能路由业务请求报文的特征信息以及边界节点的标识信息；同时，另一方面，将智能路由业务报文按照传统IP路由方式转发，以继续向应用服务器130发送。由于此时尚未得到精细化的智能路由业务流转发路径，所以，智能路由业务报文按照传统的查找IP路由表的转发方式，并经过多个混合转发设备121的内连接口转发，发送到与应用服务器130直接连接的边界节点中。
此时，与应用服务器130直接连接的边界节点的已经接收了第一流表，第一流表项中记载了该智能路由业务报文的特征信息，所以，与应用服务器130直接连接的边界节点将该智能路由业务报文进行镜像以获得镜像报文，并将镜像报文封装进第一消息发送给控制器150。其中，第一消息中包括镜像报文、边界节点的标识信息以及接收业务报文的接口的接口属性信息，而且，镜像报文中包括智能路由业务报文的特征信息。同时，另一方面，将原来的智能路由业务报文按照传统IP路由方式转发，以继续通过与应用服务器130直接连接的边界节点的外连接口向应用服务器130发送。
在另一种实施方式中，第一消息可以同时包括特征信息、镜像报文、边界节点的标识信息和接收业务报文的接口的接口属性信息。控制器150接收到第一消息后，从第一消息中读出智能路由业务报文的特征信息、第二边界节点的标识信息以及接收业务报文的接口的接口属性信息。根据接口属性信息确定第一边界节点和第二边界节点。例如：具体地，从外连接口接收智能路由业务请求报文并且接口属性信息为报文是上行的边界节点为第一边界节点，从外连接口发送智能路由业务请求报文并且接口属性信息为报文是下行的边界节点为第二边界节点。此处，与用户端110直接连接的边界节点为第一边界节点，而与应用服务器130直接连接的边界节点为第二边界节点。
在其它的实施方式中，控制器可根据接收到消息的先后顺序确定第一边界节点为入边界节点和第二边界节点为出边界节点。
控制器150根据智能路由业务报文的特征信息在本地查找到与该特征信息关联的第一边界节点的标识信息、第二边界节点的标识信息以及策略控制因子。控制器150之前已经通过IGP协议侦听等方式接收了SDN过渡网络120中的混合转发设备121的拓扑连接图。控制器150根据第一边界节点的标识信息、第二边界节点的标识信息、策略控制因子以及SDN过渡网络120中的混合转发设备121的拓扑连接图计算出符合用户端110要求的智能路由业务流转发路径，为智能路由业务流转发路径上的每个节点生成对应的第二流表，并将第二流表分别向每个节点发送。而且，当第二流表被发送到第一边界节点以及第二边界节点后，第一边界节点以及第二边界节点根据第二流表项处理智能路由业务报文，而且，不会再将后续的智能路由业务报文向控制器150发送，以减轻控制器150的负荷。
在生成智能路由业务流转发路径后，如图中划线所构成的虚线所示，用户端110所发送的后续的智能路由业务报文在进入SDN过渡网络120后，按照智能路由业务流转发路径进行转发，最后到达应用服务器130，从而完成数据的传输。
可以理解的是，这种实施方式按照需要只镜像新发起的有智能路由业务的报文，而不会镜像普通业务的报文，克服了上一实施方式新发起的智能路由业务请求报文和普通业务报文都必须镜像一份给控制器150，从而造成控制器150的负担比较重的问题。但是，在这种实施方式下，必须等初始发送的智能路由业务请求报文发送给应用服务器130后，应用服务器130将该智能路由业务请求报文的特征信息发送给策略服务器140，再转发给控制器150，控制器150再将该智能路由业务请求报文的特征信息记载在第一流表，并下发给各个混合转发设备121后，控制器150才能镜像该智能路由业务报文，进而去计算智能路由业务流转发路径。所以，本实施方式所耗费的时间稍长一些。
参阅图5，图5是采用图1所示的流转发系统实现智能路由业务的又一实施方式的示意图。
本实施方式中，控制器按需向混合转发设备121下发第一流表项，其中，第一流表项包括需要进行智能路由业务的对象的特征信息及动作，所述动作用于向所述控制器发送消息，使得具有需要进行智能路由业务的对象的特征信息的数据流进入边界节点后，用特征信息为索引查找流表，如果找到匹配流表项，则除了将报文按传统的IP路由方式转发外，还另外镜像一份报文。
在本实施方式中，运营商已经预先确定需要进行智能路由业务的对象，例如：某个用户是贵宾用户，所以该用户的业务流可以获得更多的带宽进行数据传输。运营商把需要进行智能路由业务的数据流的特征信息设置在应用服务器130中，所以，应用服务器130将需要进行智能路由业务的数据流的特征信息以及建立智能路由业务所需的约束条件发送给策略服务器140。策略服务器140解析出需要进行智能路由业务的数据流的特征信息以及根据智能路由业务请求报文解析出建立智能路由业务所需的约束条件并生成策略控制因子，并将智能路由业务的数据流的特征信息以及策略控制因子封装到控制策略中，然后将控制策略发送给控制器150。控制器150根据需要进行智能路由业务的数据流的特征信息生成第一流表，然后通过控制器150分别发送给各个混合转发设备121。
用户端110向应用服务器130发送智能路由业务报文，如图中点划线所构成的虚线所示，所述智能路由业务报文发送到与用户端110直接连接的边界节点中。由于此时与用户端110直接连接的边界节点已经接收了第一流表，第一流表中记载了该智能路由业务报文的特征信息，所以，与用户端110直接连接的边界节点将该智能路由业务报文进行镜像以获得镜像报文，
再将镜像报文封装进第一消息发送给控制器150。其中，第一消息中包括镜像报文、边界节点的标识信息以及接收所述智能路由业务报文的接口的接口属性信息，而且，镜像报文包括智能路由业务报文的特征信息。接口属性信息用于识别所述边界节点为智能路由业务报文在所述SDN过渡网络的入边界节点或出边界节点。
在另一种实施方式中，第一消息可以同时包括特征信息、镜像报文、边界节点的标识信息和接收业务报文的接口的接口属性信息。
控制器150接收到第一消息后，从第一消息中读出智能路由业务请求报文的特征信息以及边界节点的标识信息；同时，另一方面，将智能路由业务报文按照传统IP路由方式转发，以继续向应用服务器130发送。由于此时尚未得到精细化的智能路由业务流转发路径，所以，智能路由业务报文按照传统的查找IP路由表的转发方式，并经过多个混合转发设备121的内连接口转发，发送到与应用服务器130直接连接的边界节点中。
此时，与应用服务器130直接连接的边界节点的已经接收了第一流表，第一流表项中记载了该智能路由业务报文的特征信息，所以，与应用服务器130直接连接的边界节点将该智能路由业务报文进行镜像以获得镜像报文，并将镜像报文封装进第一消息发送给控制器150。其中，第一消息中包括镜像报文、边界节点的标识信息以及接收业务报文的接口的接口属性信息，而且，镜像报文中包括智能路由业务报文的特征信息。同时，另一方面，将原来的智能路由业务报文按照传统IP路由方式转发，以继续通过与应用服务器130直接连接的边界节点的外连接口向应用服务器130发送。
在另一种实施方式中，第一消息可以同时包括特征信息、镜像报文、边界节点的标识信息和接收业务报文的接口的接口属性信息。控制器150接收到第一消息后，从第一消息中读出智能路由业务报文的特征信息、第二边界节点的标识信息以及接收业务报文的接口的接口属性信息。根据接口属性信息确定第一边界节点和第二边界节点。例如：具体地，从外连接口接收智能路由业务请求报文并且接口属性信息为报文是上行的边界节点为第一边界节点，从外连接口发送智能路由业务请求报文并且接口属性信息为报文是下行的边界节点为第二边界节点。此处，与用户端110直接连接的边界节点为第一边界节点，而与应用服务器130直接连接的边界节点为第二边界节点。
在其它的实施方式中，控制器根据接收到消息的先后顺序确定第一边界节点为入边界节点和第二边界节点为出边界节点。
控制器150根据智能路由业务报文的特征信息在本地查找到与该特征信息关联的第一边界节点的标识信息、第二边界节点的标识信息以及策略控制因子。控制器150之前已经通过IGP协议侦听等方式接收了SDN过渡网络120中的混合转发设备121的拓扑连接图。控制器150根据第一边界节点的标识信息、第二边界节点的标识信息、策略控制因子以及SDN过渡网络120中的混合转发设备121的拓扑连接图计算出符合用户端110要求的智能路由业务流转发路径，为智能路由业务流转发路径上的每个节点生成对应的第二流表，并将第二流表分别向每个节点发送。而且，当第二流表被发送到第一边界节点以及第二边界节点后，第一边界节点以及第二边界节点根据第二流表项处理智能路由业务报文，而且，不会再将后续的智能路由业务报文向控制器150发送，以减轻控制器150的负荷。
在生成智能路由业务流转发路径后，如图中划线所构成的虚线所示，用户端110所发送的后续的智能路由业务报文在进入SDN过渡网络120后，按照智能路由业务流转发路径进行转发，最后到达应用服务器130，从而完成数据的传输。
可以理解的是，这种实施方式同时具有按需镜像报文以及反应时间短的优点，但是，本实施方式仅适用于预先知道需要进行智能路由业务的对象的场景。
参阅图6，图6是本申请流转发方法一实施方式的流程图。本实施方式的流转发方法应用于(SDN migration network) SDN过渡网络，包括：
S601：边界节点接收用户侧设备发送的智能路由业务请求报文，智能路由业务请求报文用于请求业务服务器为用户侧设备提供智能路由业务，智能路由业务请求报文包括建立智能路由业务所需的约束条件。
在进行智能路由业务前，控制器必须先获得需要进行智能路由业务的数据流的特征信息以及建立智能路由业务所需的约束条件。所述在申请智能路由业务时，用户侧设备发送智能路由业务请求报文，智能路由业务请求报文用于请求业务服务器为用户侧设备提供智能路由业务，智能路由业务请求报文包括所述智能路由业务请求报文的特征信息以及建立智能路由业务所需的约束条件。边界节点接收用户侧设备发送的智能路由业务请求报文。
S602：如果所述边界节点在流表中没有查找到所述智能路由业务请求报文中的特征信息对应的匹配流表项，所述对应的匹配流表项包括所述特征信息，则所述边界节点向控制器发送第一消息，所述第一消息包括所述特征信息和所述边界节点的标识信息，所述边界节点为在所述SDN过渡网络中接收所述智能路由业务请求报文的入边界节点或出边界节点。
如果是一个新提出智能路由业务请求的数据流，边界节点中必然没有记载该数据流的特征信息，所以，可以预先对边界节点进行设置，将边界节点的外连接口设置为在流表中没有查找到智能路由业务请求报文中的特征信息对应的匹配流表项时，边界节点向控制器发送第一消息，第一消息包括特征信息和边界节点的标识信息；将边界节点的内连接口设置为即使在流表中没有查找到特征信息时，不向控制器发送智能路由业务请求报文的特征信息。其中，特征信息至少包括智能路由业务请求报文中的以下一种：源地址、目的地址，源端口、目的端口以及协议号。
在本实施方式中，第一消息封装有智能路由业务请求报文和边界节点的标识信息，而在智能路由业务请求报文中包含特征信息。在另一种可能的实施方式中，第一消息可同时封装有智能路由业务请求报文、智能路由业务请求报文的特征信息和边界节点的标识信息。在这两种方式下，智能路由业务请求报文都发送给了控制器，为了能够继续进行报文传输，边界节点还必须接收控制器发送的第二消息，所述第二消息包括智能路由业务请求报文，从而实现将智能路由业务请求报文返还给边界节点继续进行报文传输。
而在再一种可能的实施方式中，第一消息封装有智能路由业务请求报文的镜像报文和边界节点的标识信息。智能路由业务请求报文的镜像报文为所述智能路由业务请求报文的复制报文。而，智能路由业务请求报文中包含特征信息，所以，镜像报文也包含特征信息。而在又一种可能的实施方式中，第一消息可同时封装有镜像报文、特征信息和边界节点的标识信息。
第一消息还可以包括接收智能路由业务请求报文的接口的接口属性信息，其中，接口属性信息用于识别边界节点为智能路由业务请求报文在SDN过渡网络的入边界节点或出边界节点。具体地，从外连接口接收智能路由业务请求报文并且接口属性信息为报文是上行的边界节点为第一边界节点（入边界节点），从外连接口发送智能路由业务请求报文并且接口属性信息为报文是下行的边界节点为第二边界节点（出边界节点）。
在其它的实施方式中，控制器可根据接收到消息的先后顺序确定第一边界节点为入边界节点和第二边界节点为出边界节点。
如果边界节点在流表中没有查找到智能路由业务请求报文中的特征信息对应的匹配流表项，则所述边界节点向控制器发送第一消息。
由于此时还没有生成智能路由业务流转发路径，边界节点根据传统IP路由方式发送智能路由业务请求报文。
S603：边界节点接收所述控制器发送的第一流表项，第一流表项根据第一消息生成且满足约束条件。
控制器接收到第一消息后，获得特征信息以及第一边界节点的第一边界节点标识以及第二边界节点的第二边界节点标识，并从应用服务器所接收到的智能路由业务请求报文中获得建立智能路由业务所需的约束条件，进而生成第一流表项，所生成的第一流表项满足所述约束条件。边界节点接收所述控制器发送的第一流表项
S604：边界节点根据第一流表项处理用户侧设备发来的报文。
在生成第一流表项后，智能路由业务流转发路径已经建立，边界节点不再根据传统IP路由方式发送智能路由业务请求报文，而是根据第一流表项处理用户侧设备发来的报文。
参阅图7，图7是本申请流转发方法另一实施方式的流程图。本实施方式的流转发方法应用于SDN过渡网络，包括：
S701：边界节点接收用户侧设备发送的业务报文。
在进行智能路由业务前，控制器必须先获得需要进行智能路由业务的数据流的特征信息以及建立智能路由业务所需的约束条件。所述在申请智能路由业务时，用户侧设备发送智能路由业务请求报文，智能路由业务请求报文用于请求业务服务器为用户侧设备提供智能路由业务，智能路由业务请求报文包括所述智能路由业务请求报文的特征信息以及建立智能路由业务所需的约束条件。
在另一实施方式中，运营商已经预先知道了需要进行智能路由业务的数据流的特征信息。只需通过智能路由业务请求报文获得建立智能路由业务所需的约束条件。
在发完智能路由业务请求报文后，用户侧设备将继续发送业务报文（或称智能路由业务报文）。边界节点接收用户侧设备发送的业务报文。
S702：边界节点在流表中查找到业务报文中的特征信息对应的第一流表项，第一流表项包括动作，动作用于向所述控制器发送消息，第一流表项由控制器根据用户侧设备发送的智能路由业务请求报文生成的或者根据预先设置的需要进行智能路由业务的对象生成的。
由于应用服务器已经获得智能路由业务请求报文，并将该智能路由业务请求报文的特征信息发送给控制器，控制器根据所述特征信息生成第一流表并发送给边界节点。所以，可以预先设置将边界节点的外连接口设置为在流表中查找到智能路由业务请求报文中的特征信息对应的匹配流表项时，边界节点向控制器发送消息，所述消息包括特征信息和边界节点的标识信息；将边界节点的内连接口设置为即使在流表中查找到特征信息时，不向控制器发送智能路由业务请求报文的特征信息。其中，特征信息至少包括智能路由业务请求报文中的以下一种：源地址、目的地址，源端口、目的端口以及协议号。
边界节点在流表中查找到业务报文中的特征信息对应的第一流表项。
S703：边界节点向控制器发送第一消息，第一消息包括所述特征信息、边界节点的标识信息和接收业务报文的接口的接口属性信息，接口属性信息用于识别边界节点为业务报文在SDN过渡网络的入边界节点或出边界节点。
在第一流表项中查找到相应的特征信息时，边界节点向控制器发送第一消息。
在本实施方式中，第一消息包括业务报文的镜像报文、边界节点的标识信息和接收业务报文的接口的接口属性信息，其中，业务报文的镜像报文为业务报文的复制报文，所以业务报文包含所述特征信息，则镜像报文也包括所述特征信息。在另一种实施方式中，第一消息包括所述特征信息、边界节点的标识信息、接收业务报文的接口的接口属性信息以及业务报文的镜像报文。其中，接口属性信息用于识别边界节点为智能路由业务请求报文在SDN过渡网络的入边界节点或出边界节点。具体地，从外连接口接收智能路由业务请求报文并且接口属性信息为报文是上行的边界节点为第一边界节点（入边界节点），从外连接口发送智能路由业务请求报文并且接口属性信息为报文是下行的边界节点为第二边界节点（出边界节点）。
由于此时还没有生成智能路由业务流转发路径，在边界节点向控制器发送第一消息后，边界节点根据传统IP路由方式发送智能路由业务报文。
S704：边界节点接收控制器发送的第二流表项，第二流表项满足智能路由业务请求报文中的约束条件。
控制器接收到第一消息后，获得特征信息以及第一边界节点的第一边界节点标识以及第二边界节点的第二边界节点标识，并从应用服务器所接收到的智能路由业务请求报文中获得建立智能路由业务所需的约束条件，进而生成第二流表项，所生成的第二流表项满足所述约束条件。边界节点接收控制器发送的第二流表项。
S705：边界节点根据第二流表项处理业务报文。
在生成第二流表项后，智能路由业务流转发路径已经建立，边界节点不再根据传统IP路由方式发送报文，而是根据第二流表项处理用户侧设备发来的报文。
参阅图8，图8是本申请流转发方法再一实施方式的流程图。本实施方式的流转发方法应用于SDN过渡网络，包括：
S801：控制器接收第一边界节点发送的第一消息，所述第一消息包括用户侧设备发送的报文的特征信息和所述第一边界节点的标识信息。
当所述报文为业务报文时，第一边界节点和第二边界节点并不知道在什么情况下需要发送第一消息以及第二消息，所述控制器向所述第一边界节点和所述第二边界节点分别发送第一流表项以告诉第一边界节点和第二边界节点什么时候发送消息。所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的或根据预先设置的需要进行智能路由业务的对象生成的。
当所述报文为业务报文时，第一边界节点和第二边界节点第一流表中没有所述特征时，第一边界节点和第二边界节需要发送第一消息以及第二消息。
所述第一消息还包括所述第一边界节点接收所述报文的第一接口的第一接口属性信息，所述第一接口属性信息用于识别所述第一边界节点为所述报文在所述SDN过渡网络的入边界节点。
S802：所述控制器接收第二边界节点发送的第二消息，所述第二消息包括所述特征信息和所述第二边界节点的标识信息。
所述第二消息还包括所述第二边界节点接收所述报文的第二接口的第二接口属性信息，所述第二接口属性信息用于识别所述第二边界节点为所述业务报文在所述SDN过渡网络的出节点。
S803：所述控制器确定所述第一边界节点为在所述SDN过渡网络中接收所述报文的入边界节点；所述第二边界节点为在所述SDN过渡网络中接收所述报文的出边界节点。
具体地，从外连接口接收智能路由业务请求报文并且接口属性信息为报文是上行的边界节点为入边界节点，从外连接口接收智能路由业务请求报文并且接口属性信息为报文是下行的边界节点为出边界节点。
在另一种实施方式中，控制器根据接收到所述第一消息和第二消息的先后顺序确定所述第一边界节点为入边界节点和所述第二边界节点为出边界节点。
S804：所述控制器根据所述第一边界节点的标识信息，所述第二边界节点的标识信息和策略控制因子计算出所述特征信息对应的智能路由业务流所需经过的流转发路径。
控制器从第一消息和第二消息中解析出第一边界节点的标识信息，所述第二边界节点的标识信息以及所述特征信息。控制器接收策略服务器发送的所述策略控制因子和所述特征信息。控制器通过所述特征信息将第一边界节点的标识信息，所述第二边界节点的标识信息以及策略控制因子关联。控制器根据所述第一边界节点的标识信息，所述第二边界节点的标识信息和策略控制因子计算出所述特征信息对应的智能路由业务流所需经过的流转发路径。
S805：所述控制器为经过所述流转发路径上的每个节点分别生成各自对应的流表项，将所述流表项分别发送给对应的节点，其中，所述策略控制因子是根据所述用户侧设备发送的智能路由业务请求报文中的约束条件确定。
本申请还提供了一种流转发方法，所述方法应用于(SDN migration network) SDN过渡网络，所述方法包括如下步骤：
第一边界节点接收用户侧设备发送的智能路由业务请求报文，所述智能路由业务请求报文用于请求业务服务器为所述用户侧设备提供智能路由业务，所述智能路由业务请求报文包括建立所述智能路由业务所需的约束条件；
如果所述第一边界节点在流表中没有查找到所述智能路由业务请求报文中的特征信息对应的匹配流表项，所述对应的匹配流表项包括所述特征信息，则所述第一边界节点向控制器发送第一消息，所述第一消息包括所述特征信息和所述第一边界节点的标识信息；
所述控制器接收所述第一边界节点发送的所述第一消息；
第二边界节点接收所述第一边界节点转发的用户侧设备发送的智能路由业务请求报文；
如果所述第二边界节点在流表中没有查找到所述智能路由业务请求报文中的特征信息对应的匹配流表项，所述对应的匹配流表项包括所述特征信息，则所述第二边界节点向控制器发送第二消息，所述第二消息包括所述特征信息和所述第二边界节点的标识信息；
所述控制器接收所述第二边界节点发送的所述第二消息；
所述控制器确定所述第一边界节点为在所述SDN过渡网络中接收所述报文的入边界节点；所述第二边界节点为在所述SDN过渡网络中接收所述报文的出边界节点；
所述控制器根据所述第一边界节点的标识信息，所述第二边界节点的标识信息和策略控制因子计算出所述特征信息对应的智能路由业务流所需经过的流转发路径，其中，所述策略控制因子是根据所述用户侧设备发送的智能路由业务请求报文中的约束条件确定；
所述控制器为经过所述流转发路径上的每个节点分别生成各自对应的流表项，将所述流表项分别发送给对应的节点，所述节点包括所述第一边界节点以及所述第二边界节点；
所述第一边界节点以及第二边界节点接收所述控制器发送的流表项；
所述第一边界节点以及第二边界节点根据所述流表项处理所述用户侧设备发来的报文。
具体请结合图6、图8及相关描述，此处不重复赘述。
本申请还提供了一种流转发方法，所述方法应用于(SDN migration network) SDN过渡网络，所述方法包括如下步骤：
第一边界节点接收用户侧设备发送的业务报文；所述第一边界节点在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的；
所述第一边界节点向控制器发送第一消息，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息；
所述控制器接收第一边界节点发送的第一消息；
第二边界节点接收所述第一边界节点转发的用户侧设备发送的业务报文；所述第二边界节点在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；
所述第二边界节点向控制器发送第二消息，所述第二消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息；
所述控制器接收第二边界节点发送的第二消息；
所述控制器确定所述第一边界节点为在所述SDN过渡网络中接收所述报文的入边界节点；所述第二边界节点为在所述SDN过渡网络中接收所述报文的出边界节点；
所述控制器根据所述第一边界节点的标识信息，所述第二边界节点的标识信息和策略控制因子计算出所述特征信息对应的智能路由业务流所需经过的流转发路径；
所述控制器为经过所述流转发路径上的每个节点分别生成各自对应的第二流表项，将所述第二流表项分别发送给对应的节点，其中，所述策略控制因子是根据所述用户侧设备发送的智能路由业务请求报文中的约束条件确定，所述节点包括第一边界节点以及第二边界节点；
所述第一边界节点以及第二边界节点接收所述控制器发送的第二流表项，所述第二流表项满足所述智能路由业务请求报文中的约束条件；
所述第一边界节点以及第二边界节点根据所述第二流表项处理所述业务报文。
具体请结合图7、图8及相关描述，此处不重复赘述。
参阅图9，图9是本申请混合转发设备一实施方式的结构示意图。本实施方式的混合转发设备包括：第一接收模块910、查找接收模块920、第二接收模块930以及处理模块940，
所述第一接收模块910用于接收用户侧设备发送的智能路由业务请求报文，所述智能路由业务请求报文用于请求业务服务器为所述用户侧设备提供智能路由业务，所述智能路由业务请求报文包括建立所述智能路由业务所需的约束条件。
比如，在进行智能路由业务前，控制器必须先获得需要进行智能路由业务的数据流的特征信息以及建立智能路由业务所需的约束条件。所述在申请智能路由业务时，用户侧设备发送智能路由业务请求报文，智能路由业务请求报文用于请求业务服务器为用户侧设备提供智能路由业务，智能路由业务请求报文包括所述智能路由业务请求报文的特征信息以及建立智能路由业务所需的约束条件。第一接收模块910接收用户侧设备发送的智能路由业务请求报文。
所述第一接收模块910将所述智能路由业务请求报文向所述查找接收模块920发送
所述查找接收模块920用于接收所述智能路由业务请求报文，在所述边界节点在流表中没有查找到所述智能路由业务请求报文中的特征信息对应的匹配流表项时，所述对应的匹配流表项包括所述特征信息，所述边界节点向控制器发送第一消息，所述第一消息包括所述特征信息和所述边界节点的标识信息，所述边界节点为在所述SDN过渡网络中接收所述智能路由业务请求报文的入边界节点或出边界节点。
比如，如果是一个新提出智能路由业务请求的数据流，边界节点中必然没有记载该数据流的特征信息，所以，可以预先对边界节点进行设置，将边界节点的外连接口设置为在流表中没有查找到智能路由业务请求报文中的特征信息对应的匹配流表项时，边界节点向控制器发送第一消息，第一消息包括特征信息和边界节点的标识信息；将边界节点的内连接口设置为即使在流表中没有查找到特征信息时，不向控制器发送智能路由业务请求报文的特征信息。其中，特征信息至少包括智能路由业务请求报文中的以下一种：源地址、目的地址，源端口、目的端口以及协议号。
在本实施方式中，第一消息封装有智能路由业务请求报文和边界节点的标识信息，而在智能路由业务请求报文中包含特征信息。在另一种可能的实施方式中，第一消息可同时封装有智能路由业务请求报文、智能路由业务请求报文的特征信息和边界节点的标识信息。在这两种方式下，智能路由业务请求报文都发送给了控制器，为了能够继续进行报文传输，边界节点还必须接收控制器发送的第二消息，所述第二消息包括智能路由业务请求报文，从而实现将智能路由业务请求报文返还给边界节点继续进行报文传输。
而在再一种可能的实施方式中，第一消息封装有智能路由业务请求报文的镜像报文和边界节点的标识信息。智能路由业务请求报文的镜像报文为所述智能路由业务请求报文的复制报文。而，智能路由业务请求报文中包含特征信息，所以，镜像报文也包含特征信息。而在又一种可能的实施方式中，第一消息可同时封装有镜像报文、特征信息和边界节点的标识信息。
第一消息还可以包括接收智能路由业务请求报文的接口的接口属性信息，其中，接口属性信息用于识别边界节点为智能路由业务请求报文在SDN过渡网络的入边界节点或出边界节点。具体地，从外连接口接收智能路由业务请求报文并且接口属性信息为报文是上行的边界节点为第一边界节点（入边界节点），从外连接口发送智能路由业务请求报文并且接口属性信息为报文是下行的边界节点为第二边界节点（出边界节点）。
在其它的实施方式中，控制器可根据接收到消息的先后顺序确定第一边界节点为入边界节点和第二边界节点为出边界节点。
由于此时还没有生成智能路由业务流转发路径，处理模块940根据传统IP路由方式发送智能路由业务请求报文。
所述第二接收模块930用于接收所述控制器发送的第一流表项，所述第一流表项根据所述第一消息生成且满足所述约束条件。
比如，控制器接收到第一消息后，获得特征信息以及第一边界节点的第一边界节点标识以及第二边界节点的第二边界节点标识，并从应用服务器所接收到的智能路由业务请求报文中获得建立智能路由业务所需的约束条件，进而生成第一流表项，所生成的第一流表项满足所述约束条件。第二接收模块930接收所述控制器发送的第一流表项。
所述第二接收模块930将所述第一流表项发送给所述处理模块940。
所述处理模块940用于接收所述第一流表项，根据所述第一流表项处理所述用户侧设备发来的报文。
比如，在生成第一流表项后，智能路由业务流转发路径已经建立，处理模块940不再根据传统IP路由方式发送智能路由业务请求报文，而是根据第一流表项处理用户侧设备发来的报文。
在另一实施方式中，所述设备还包括第三接收模块，所述第三接收模块接收所述控制器发送的第二消息，所述第二消息包括所述智能路由业务请求报文；所述处理模块940根据传统IP路由方式发送所述智能路由业务请求报文。
参阅图10，图10是本申请混合转发设备另一实施方式的结构示意图。本实施方式的混合转发设备包括：第一接收模块1010、查找模块1020、发送模块1030、第二接收模块1040以及处理模块1050。
所述第一接收模块1010用于接收用户侧设备发送的业务报文。
比如，在进行智能路由业务前，控制器必须先获得需要进行智能路由业务的数据流的特征信息以及建立智能路由业务所需的约束条件。所述在申请智能路由业务时，用户侧设备发送智能路由业务请求报文，智能路由业务请求报文用于请求业务服务器为用户侧设备提供智能路由业务，智能路由业务请求报文包括所述智能路由业务请求报文的特征信息以及建立智能路由业务所需的约束条件。
在另一实施方式中，运营商已经预先知道了需要进行智能路由业务的数据流的特征信息。故只需通过智能路由业务请求报文获得建立智能路由业务所需的约束条件即可。
在发完智能路由业务请求报文后，用户侧设备将继续发送业务报文（或称智能路由业务报文）。第一接收模块1010接收用户侧设备发送的业务报文。
所述第一接收模块1010将所述业务报文向所述查找模块1020发送。
所述查找模块1020用于接收所述业务报文，在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的或者根据预先设置的需要进行智能路由业务的对象生成的。
比如，由于应用服务器已经获得智能路由业务请求报文，并将该智能路由业务请求报文的特征信息发送给控制器，控制器根据所述特征信息生成第一流表并发送给边界节点。所以，可以预先设置将边界节点的外连接口设置为在流表中查找到智能路由业务请求报文中的特征信息对应的匹配流表项时，边界节点向控制器发送消息，所述消息包括特征信息和边界节点的标识信息；将边界节点的内连接口设置为即使在流表中查找到特征信息时，不向控制器发送智能路由业务请求报文的特征信息。其中，特征信息至少包括智能路由业务请求报文中的以下一种：源地址、目的地址，源端口、目的端口以及协议号。查找模块1020在流表中查找到业务报文中的特征信息对应的第一流表项。
所述查找模块1020将查找结果向所述发送模块1030发送。
所述发送模块1030用于接收所述查找结果，向控制器发送第一消息，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息，所述接口属性信息用于识别所述边界节点为所述业务报文在所述SDN过渡网络的入边界节点或出边界节点。
比如，在第一流表项中查找到相应的特征信息时，发送模块1030向控制器发送第一消息。
在本实施方式中，第一消息包括业务报文的镜像报文、边界节点的标识信息和接收业务报文的接口的接口属性信息，其中，业务报文的镜像报文为业务报文的复制报文，所以业务报文包含所述特征信息，则镜像报文也包括所述特征信息。在另一种实施方式中，第一消息包括所述特征信息、边界节点的标识信息、接收业务报文的接口的接口属性信息以及业务报文的镜像报文。其中，接口属性信息用于识别边界节点为智能路由业务请求报文在SDN过渡网络的入边界节点或出边界节点。具体地，从外连接口接收智能路由业务请求报文并且接口属性信息为报文是上行的边界节点为第一边界节点（入边界节点），从外连接口发送智能路由业务请求报文并且接口属性信息为报文是下行的边界节点为第二边界节点（出边界节点）。
由于此时还没有生成智能路由业务流转发路径，在边界节点向控制器发送第一消息后，处理模块1050根据传统IP路由方式发送智能路由业务报文。
所述第二接收模块1040用于接收所述控制器发送的第二流表项，所述第二流表项满足所述智能路由业务请求报文中的约束条件。
比如，控制器接收到第一消息后，获得特征信息以及第一边界节点的第一边界节点标识以及第二边界节点的第二边界节点标识，并从应用服务器所接收到的智能路由业务请求报文中获得建立智能路由业务所需的约束条件，进而生成第二流表项，所生成的第二流表项满足所述约束条件。第二接收模块1040接收控制器发送的第二流表项。
所述第二接收模块1040将所述第二流表项向所述处理模块1050发送。
所述处理模块1040用于接收所述第二流表项，根据所述第二流表项处理所述业务报文。
比如，在生成第二流表项后，智能路由业务流转发路径已经建立，处理模块1040不再根据传统IP路由方式发送报文，而是根据第二流表项处理用户侧设备发来的报文。
参阅图11，图11是本申请控制器一实施方式的结构示意图。本实施方式的控制器包括：接收模块1110、确定模块1120、计算模块1130以及发送模块1140。
所述接收模块1110用于接收第一边界节点发送的第一消息，所述第一消息包括用户侧设备发送的报文的特征信息和所述第一边界节点的标识信息，以及接收第二边界节点发送的第二消息，所述第二消息包括所述特征信息和所述第二边界节点的标识信息。
比如，当所述报文为业务报文时，第一边界节点和第二边界节点并不知道在什么情况下需要发送第一消息以及第二消息，所述控制器向所述第一边界节点和所述第二边界节点分别发送第一流表项以告诉第一边界节点和第二边界节点什么时候发送消息。所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的或根据预先设置的需要进行智能路由业务的对象生成的。
当所述报文为业务报文时，第一边界节点和第二边界节点第一流表中没有所述特征时，第一边界节点和第二边界节需要发送第一消息以及第二消息。
所述第一消息还包括所述第一边界节点接收所述报文的第一接口的第一接口属性信息，所述第一接口属性信息用于识别所述第一边界节点为所述报文在所述SDN过渡网络的入边界节点。
所述第二消息还包括所述第二边界节点接收所述报文的第二接口的第二接口属性信息，所述第二接口属性信息用于识别所述第二边界节点为所述业务报文在所述SDN过渡网络的出节点。
接收到报文后，接收模块1110接收第一边界节点发送的第一消息。
所述接收模块1110将所述第一消息和第二消息向所述确定模块1120。
所述确定模块1120用于确定所述第一边界节点为在所述SDN过渡网络中接收所述报文的入边界节点，所述第二边界节点为在所述SDN过渡网络中接收所述报文的出边界节点。
比如，具体地，确定模块1120从外连接口接收智能路由业务请求报文并且接口属性信息为报文是上行的边界节点为入边界节点，从外连接口接收智能路由业务请求报文并且接口属性信息为报文是下行的边界节点为出边界节点。
在另一种实施方式中，确定模块1120根据接收到所述第一消息和第二消息的先后顺序确定所述第一边界节点为入边界节点和所述第二边界节点为出边界节点。
所述确定模块1120将确定的结果向所述计算模块1130发送。
所述计算模块1130用于接收所述确定的结果，为经过所述流转发路径上的每个节点分别生成各自对应的流表项。
所述发送模块1140用于将所述流表项分别发送给对应的节点，其中，所述策略控制因子是根据所述用户侧设备发送的智能路由业务请求报文中的约束条件确定。发送模块1140还用于当所述报文为业务报文时，向所述第一边界节点和所述第二边界节点分别发送第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的。
在另一实施方式中，接收模块1110还用于接收策略服务器发送的所述策略控制因子和所述特征信息。
参阅图12，图12是本申请混合转发设备再一实施方式的结构示意图。本实施方式的混合转发设备包括：接收器1210、处理器1220、发送器1230、随机存取存储器1240、只读存储器1250以及总线1260。其中，处理器1220通过总线1260分别耦接接收器1210、发送器1230、随机存取存储器1240以及只读存储器1250。其中，当需要运行混合转发设备时，通过固化在只读存储器1250中的基本输入输出系统或者嵌入式系统中的bootloader引导系统进行启动，引导混合转发设备进入正常运行状态。在混合转发设备进入正常运行状态后，在随机存取存储器1240中运行应用程序和操作系统，使得：
接收器1210用于接收用户侧设备发送的智能路由业务请求报文，所述智能路由业务请求报文用于请求业务服务器为所述用户侧设备提供智能路由业务，所述智能路由业务请求报文包括建立所述智能路由业务所需的约束条件。
比如，在进行智能路由业务前，控制器必须先获得需要进行智能路由业务的数据流的特征信息以及建立智能路由业务所需的约束条件。所述在申请智能路由业务时，用户侧设备发送智能路由业务请求报文，智能路由业务请求报文用于请求业务服务器为用户侧设备提供智能路由业务，智能路由业务请求报文包括所述智能路由业务请求报文的特征信息以及建立智能路由业务所需的约束条件。接收器1210接收用户侧设备发送的智能路由业务请求报文。
所述处理器1220用于接收所述智能路由业务请求报文，在所述边界节点在流表中没有查找到所述智能路由业务请求报文中的特征信息对应的匹配流表项时，所述对应的匹配流表项包括所述特征信息，所述发送器1230向控制器发送第一消息，所述第一消息包括所述特征信息和所述边界节点的标识信息，所述边界节点为在所述SDN过渡网络中接收所述智能路由业务请求报文的入边界节点或出边界节点。
比如，如果是一个新提出智能路由业务请求的数据流，边界节点中必然没有记载该数据流的特征信息，所以，可以预先对边界节点进行设置，将边界节点的外连接口设置为在流表中没有查找到智能路由业务请求报文中的特征信息对应的匹配流表项时，边界节点向控制器发送第一消息，第一消息包括特征信息和边界节点的标识信息；将边界节点的内连接口设置为即使在流表中没有查找到特征信息时，不向控制器发送智能路由业务请求报文的特征信息。其中，特征信息至少包括智能路由业务请求报文中的以下一种：源地址、目的地址，源端口、目的端口以及协议号。
在本实施方式中，第一消息封装有智能路由业务请求报文和边界节点的标识信息，而在智能路由业务请求报文中包含特征信息。在另一种可能的实施方式中，第一消息可同时封装有智能路由业务请求报文、智能路由业务请求报文的特征信息和边界节点的标识信息。在这两种方式下，智能路由业务请求报文都发送给了控制器，为了能够继续进行报文传输，边界节点还必须接收控制器发送的第二消息，所述第二消息包括智能路由业务请求报文，从而实现将智能路由业务请求报文返还给边界节点继续进行报文传输。
而在再一种可能的实施方式中，第一消息封装有智能路由业务请求报文的镜像报文和边界节点的标识信息。智能路由业务请求报文的镜像报文为所述智能路由业务请求报文的复制报文。而，智能路由业务请求报文中包含特征信息，所以，镜像报文也包含特征信息。而在又一种可能的实施方式中，第一消息可同时封装有镜像报文、特征信息和边界节点的标识信息。
第一消息还可以包括接收智能路由业务请求报文的接口的接口属性信息，其中，接口属性信息用于识别边界节点为智能路由业务请求报文在SDN过渡网络的入边界节点或出边界节点。具体地，从外连接口接收智能路由业务请求报文并且接口属性信息为报文是上行的边界节点为第一边界节点（入边界节点），从外连接口发送智能路由业务请求报文并且接口属性信息为报文是下行的边界节点为第二边界节点（出边界节点）。
在其它的实施方式中，控制器可根据接收到消息的先后顺序确定第一边界节点为入边界节点和第二边界节点为出边界节点。
由于此时还没有生成智能路由业务流转发路径，处理器1220根据传统IP路由方式发送智能路由业务请求报文。
接收器1210还用于接收所述控制器发送的第一流表项，所述第一流表项根据所述第一消息生成且满足所述约束条件。
比如，控制器接收到第一消息后，获得特征信息以及第一边界节点的第一边界节点标识以及第二边界节点的第二边界节点标识，并从应用服务器所接收到的智能路由业务请求报文中获得建立智能路由业务所需的约束条件，进而生成第一流表项，所生成的第一流表项满足所述约束条件。接收器1210接收所述控制器发送的第一流表项。
所述处理器1220用于接收所述第一流表项，根据所述第一流表项处理所述用户侧设备发来的报文。
比如，在生成第一流表项后，智能路由业务流转发路径已经建立，处理器1220不再根据传统IP路由方式发送智能路由业务请求报文，而是根据第一流表项处理用户侧设备发来的报文。
在另一实施方式中，所述接收器1210还用于接收所述控制器发送的第二消息，所述第二消息包括所述智能路由业务请求报文；所述处理模块940根据传统IP路由方式发送所述智能路由业务请求报文。
参阅图13，图13是本申请混合转发设备又一实施方式的结构示意图。本实施方式的混合转发设备包括：接收器1310、处理器1320、发送器1330、随机存取存储器1340、只读存储器1350以及总线1360。其中，处理器1320通过总线1360分别耦接接收器1310、发送器1330、随机存取存储器1340以及只读存储器1350。其中，当需要运行混合转发设备时，通过固化在只读存储器1350中的基本输入输出系统或者嵌入式系统中的bootloader引导系统进行启动，引导混合转发设备进入正常运行状态。在混合转发设备进入正常运行状态后，在随机存取存储器1340中运行应用程序和操作系统，使得：
接收器1310用于接收用户侧设备发送的业务报文。
比如，在进行智能路由业务前，控制器必须先获得需要进行智能路由业务的数据流的特征信息以及建立智能路由业务所需的约束条件。所述在申请智能路由业务时，用户侧设备发送智能路由业务请求报文，智能路由业务请求报文用于请求业务服务器为用户侧设备提供智能路由业务，智能路由业务请求报文包括所述智能路由业务请求报文的特征信息以及建立智能路由业务所需的约束条件。
在另一实施方式中，运营商已经预先知道了需要进行智能路由业务的数据流的特征信息。故只需通过智能路由业务请求报文获得建立智能路由业务所需的约束条件即可。
在发完智能路由业务请求报文后，用户侧设备将继续发送业务报文（或称智能路由业务报文）。接收器1310接收用户侧设备发送的业务报文。
所述处理器1320用于接收所述业务报文，在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的或者根据预先设置的需要进行智能路由业务的对象生成的。
比如，由于应用服务器已经获得智能路由业务请求报文，并将该智能路由业务请求报文的特征信息发送给控制器，控制器根据所述特征信息生成第一流表并发送给边界节点。所以，可以预先设置将边界节点的外连接口设置为在流表中查找到智能路由业务请求报文中的特征信息对应的匹配流表项时，边界节点向控制器发送消息，所述消息包括特征信息和边界节点的标识信息；将边界节点的内连接口设置为即使在流表中查找到特征信息时，不向控制器发送智能路由业务请求报文的特征信息。其中，特征信息至少包括智能路由业务请求报文中的以下一种：源地址、目的地址，源端口、目的端口以及协议号。处理器1320在流表中查找到业务报文中的特征信息对应的第一流表项。
所述发送器1330用于接收所述查找结果，向控制器发送第一消息，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息，所述接口属性信息用于识别所述边界节点为所述业务报文在所述SDN过渡网络的入边界节点或出边界节点。
比如，在第一流表项中查找到相应的特征信息时，发送器1330向控制器发送第一消息。
在本实施方式中，第一消息包括业务报文的镜像报文、边界节点的标识信息和接收业务报文的接口的接口属性信息，其中，业务报文的镜像报文为业务报文的复制报文，所以业务报文包含所述特征信息，则镜像报文也包括所述特征信息。在另一种实施方式中，第一消息包括所述特征信息、边界节点的标识信息、接收业务报文的接口的接口属性信息以及业务报文的镜像报文。其中，接口属性信息用于识别边界节点为智能路由业务请求报文在SDN过渡网络的入边界节点或出边界节点。具体地，从外连接口接收智能路由业务请求报文并且接口属性信息为报文是上行的边界节点为第一边界节点（入边界节点），从外连接口发送智能路由业务请求报文并且接口属性信息为报文是下行的边界节点为第二边界节点（出边界节点）。
由于此时还没有生成智能路由业务流转发路径，在边界节点向控制器发送第一消息后，发送器1330根据传统IP路由方式发送智能路由业务报文。
所述接收器1310还用于接收所述控制器发送的第二流表项，所述第二流表项满足所述智能路由业务请求报文中的约束条件。
比如，控制器接收到第一消息后，获得特征信息以及第一边界节点的第一边界节点标识以及第二边界节点的第二边界节点标识，并从应用服务器所接收到的智能路由业务请求报文中获得建立智能路由业务所需的约束条件，进而生成第二流表项，所生成的第二流表项满足所述约束条件。接收器1310接收控制器发送的第二流表项。
所述处理器1320用于接收所述第二流表项，根据所述第二流表项处理所述业务报文。
比如，在生成第二流表项后，智能路由业务流转发路径已经建立，处理器1320不再根据传统IP路由方式发送报文，而是根据第二流表项处理用户侧设备发来的报文。
参阅图14，图14是本申请控制器另一实施方式的结构示意图。本实施方式的控制器包括：接收器1410、处理器1420、发送器1430、随机存取存储器1440、只读存储器1450以及总线1460。其中，处理器1420通过总线1460分别耦接接收器1410、发送器1430、随机存取存储器1440以及只读存储器1450。其中，当需要运行控制器时，通过固化在只读存储器1450中的基本输入输出系统或者嵌入式系统中的bootloader引导系统进行启动，引导控制器进入正常运行状态。在控制器进入正常运行状态后，在随机存取存储器1440中运行应用程序和操作系统，使得：
所述接收器1410用于接收第一边界节点发送的第一消息，所述第一消息包括用户侧设备发送的报文的特征信息和所述第一边界节点的标识信息，以及接收第二边界节点发送的第二消息，所述第二消息包括所述特征信息和所述第二边界节点的标识信息。
比如，当所述报文为业务报文时，第一边界节点和第二边界节点并不知道在什么情况下需要发送第一消息以及第二消息，所述控制器向所述第一边界节点和所述第二边界节点分别发送第一流表项以告诉第一边界节点和第二边界节点什么时候发送消息。所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的或根据预先设置的需要进行智能路由业务的对象生成的。
当所述报文为业务报文时，第一边界节点和第二边界节点第一流表中没有所述特征时，第一边界节点和第二边界节需要发送第一消息以及第二消息。
所述第一消息还包括所述第一边界节点接收所述报文的第一接口的第一接口属性信息，所述第一接口属性信息用于识别所述第一边界节点为所述报文在所述SDN过渡网络的入边界节点。
所述第二消息还包括所述第二边界节点接收所述报文的第二接口的第二接口属性信息，所述第二接口属性信息用于识别所述第二边界节点为所述业务报文在所述SDN过渡网络的出节点。
接收到报文后，接收器1410接收第一边界节点发送的第一消息。
所述处理器1420用于确定所述第一边界节点为在所述SDN过渡网络中接收所述报文的入边界节点，所述第二边界节点为在所述SDN过渡网络中接收所述报文的出边界节点。
比如，具体地，处理器1420从外连接口接收智能路由业务请求报文并且接口属性信息为报文是上行的边界节点为入边界节点，从外连接口接收智能路由业务请求报文并且接口属性信息为报文是下行的边界节点为出边界节点。
在另一种实施方式中，处理器1420根据接收到所述第一消息和第二消息的先后顺序确定所述第一边界节点为入边界节点和所述第二边界节点为出边界节点。
所述处理器1420还用于接收所述确定的结果，为经过所述流转发路径上的每个节点分别生成各自对应的流表项。
所述发送器1430用于将所述流表项分别发送给对应的节点，其中，所述策略控制因子是根据所述用户侧设备发送的智能路由业务请求报文中的约束条件确定。发送器1430还用于当所述报文为业务报文时，向所述第一边界节点和所述第二边界节点分别发送第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的。
在另一实施方式中，接收器1410还用于接收策略服务器发送的所述策略控制因子和所述特征信息。
基于上述控制器和混合转发设备，本申请还提出了流转发系统，包括：用户端、混合转发设备、应用服务器、控制器以及策略服务器，所述策略服务器接收所述应用服务器所发送的智能路由业务请求报文，并根据所述智能路由业务请求报文向所述控制器发送控制策略，使得所述控制器根据所述控制策略控制计算出智能路由业务流转发路径，以控制所述用户端的智能路由业务报文按照智能路由业务流转发路径转发给所述应用服务器。具体请参阅图1至5及其相关描述，此处不重复赘述。
在本申请所提供的几个实施方式中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施方式仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施方式方案的目的。
另外，在本申请各个实施方式中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备（可以是个人计算机，服务器，或者网络设备等）或处理器（processor）执行本申请各个实施方式所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器（ROM，Read-Only Memory）、随机存取存储器（RAM，Random Access Memory）、磁碟或者光盘等各种可以存储程序代码的介质。

Claims (30)

  1. 一种流转发方法，其特征在于，所述方法应用于SDN过渡网络，所述方法包括：
    边界节点接收用户侧设备发送的智能路由业务请求报文，所述智能路由业务请求报文用于请求业务服务器为所述用户侧设备提供智能路由业务，所述智能路由业务请求报文包括建立所述智能路由业务所需的约束条件；
    如果所述边界节点在流表中没有查找到所述智能路由业务请求报文中的特征信息对应的匹配流表项，所述对应的匹配流表项包括所述特征信息，则所述边界节点向控制器发送第一消息，所述第一消息包括所述特征信息和所述边界节点的标识信息，所述边界节点为在所述SDN过渡网络中接收所述智能路由业务请求报文的入边界节点或出边界节点；
    所述边界节点接收所述控制器发送的第一流表项，所述第一流表项根据所述第一消息生成且满足所述约束条件；
    所述边界节点根据所述第一流表项处理所述用户侧设备发来的报文。
  2. 根据权利要求1所述的方法，其特征在于，所述第一消息包括所述特征信息和所述边界节点的标识信息具体为：所述第一消息包括所述智能路由业务请求报文和所述边界节点的标识信息，其中，所述智能路由业务请求报文包含所述特征信息。
  3. 根据权利要求1所述的方法，其特征在于，所述第一消息包括所述特征信息和所述边界节点的标识信息具体为：所述第一消息包括所述智能路由业务请求报文的镜像报文和所述边界节点的标识信息，其中，所述智能路由业务请求报文的镜像报文为所述智能路由业务请求报文的复制报文，所述智能路由业务请求报文包含所述特征信息；所述方法还包括：所述边界节点根据传统IP路由方式发送所述智能路由业务请求报文。
  4. 根据权利要求1-3任一权项所述的方法，其特征在于，所述第一消息还包括接收所述智能路由业务请求报文的接口的接口属性信息，所述接口属性信息用于识别所述边界节点为所述智能路由业务请求报文在所述SDN过渡网络的入边界节点或出边界节点。
  5. 根据权利要求1-4任一权项所述的方法，其特征在于，所述特征信息至少包括所述智能路由业务请求报文中的以下一种：源地址、目的地址、源端口、目的端口以及协议号。
  6. 一种流转发方法，其特征在于，所述方法应用于SDN过渡网络，所述方法包括：
    边界节点接收用户侧设备发送的业务报文；
    所述边界节点在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的；
    所述边界节点向控制器发送第一消息，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息，所述接口属性信息用于识别所述边界节点为所述业务报文在所述SDN过渡网络的入边界节点或出边界节点；
    所述边界节点接收所述控制器发送的第二流表项，所述第二流表项满足所述智能路由业务请求报文中的约束条件；
    所述边界节点根据所述第二流表项处理所述业务报文。
  7. 根据权利要求6所述的方法，其特征在于，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口属性信息具体为：所述第一消息包括所述业务报文的镜像报文和所述边界节点的标识信息，其中，所述业务报文的镜像报文为所述业务报文的复制报文，所述业务报文包含所述特征信息；所述方法还包括：所述边界节点根据传统IP路由方式发送所述业务报文。
  8. 根据权利要求6或7任一权项所述的方法，其特征在于，所述特征信息至少包括所述业务请求报文中的以下一种：源地址、目的地址，源端口、目的端口以及协议号。
  9. 一种流转发方法，其特征在于，所述方法应用于SDN过渡网络，该方法包括：
    控制器接收第一边界节点发送的第一消息，所述第一消息包括用户侧设备发送的报文的特征信息和所述第一边界节点的标识信息；
    所述控制器接收第二边界节点发送的第二消息，所述第二消息包括所述特征信息和所述第二边界节点的标识信息；
    所述控制器确定所述第一边界节点为在所述SDN过渡网络中接收所述报文的入边界节点；所述第二边界节点为在所述SDN过渡网络中接收所述报文的出边界节点；
    所述控制器根据所述第一边界节点的标识信息，所述第二边界节点的标识信息和策略控制因子计算出所述特征信息对应的智能路由业务流所需经过的流转发路径；
    所述控制器为经过所述流转发路径上的每个节点分别生成各自对应的流表项，将所述流表项分别发送给对应的节点，其中，所述策略控制因子是根据所述用户侧设备发送的智能路由业务请求报文中的约束条件确定。
  10. 根据权利要求9所述的方法，其特征在于，当所述报文为所述智能路由业务请求报文时，所述控制器确定所述第一边界节点为入边界节点；所述第二边界节点为出边界节点具体包括：所述控制器根据接收到所述第一消息和第二消息的先后顺序确定所述第一边界节点为入边界节点和所述第二边界节点为出边界节点。
  11. 根据权9所述的方法，其特征在于，所述第一消息还包括所述第一边界节点接收所述报文的第一接口的第一接口属性信息，所述第一接口属性信息用于识别所述第一边界节点为所述报文在所述SDN过渡网络的入节点；所述第二消息还包括所述第二边界节点接收所述报文的第二接口的第二接口属性信息，所述第二接口属性信息用于识别所述第二边界节点为所述业务报文在所述SDN过渡网络的出节点；所述控制器确定所述第一边界节点为入边界节点；所述第二边界节点为出边界节点具体包括：所述控制器根据接收到所述第一接口属性信息和第二接口属性信息确定所述第一边界节点为入边界节点和所述第二边界节点为出边界节点。
  12. 根据权11所述的方法，其特征在于，还包括，当所述报文为业务报文时，所述控制器向所述第一边界节点和所述第二边界节点分别发送第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的。
  13. 根据权9-12任一所述的方法，其特征在于，该方法还包括：
    所述控制器接收策略服务器发送的所述策略控制因子和所述特征信息。
  14. 一种流转发方法，其特征在于，所述方法应用于(SDN migration network) SDN过渡网络，所述方法包括如下步骤：
    第一边界节点接收用户侧设备发送的智能路由业务请求报文，所述智能路由业务请求报文用于请求业务服务器为所述用户侧设备提供智能路由业务，所述智能路由业务请求报文包括建立所述智能路由业务所需的约束条件；
    如果所述第一边界节点在流表中没有查找到所述智能路由业务请求报文中的特征信息对应的匹配流表项，所述对应的匹配流表项包括所述特征信息，则所述第一边界节点向控制器发送第一消息，所述第一消息包括所述特征信息和所述第一边界节点的标识信息；
    所述控制器接收所述第一边界节点发送的所述第一消息；
    第二边界节点接收所述第一边界节点转发的用户侧设备发送的智能路由业务请求报文；
    如果所述第二边界节点在流表中没有查找到所述智能路由业务请求报文中的特征信息对应的匹配流表项，所述对应的匹配流表项包括所述特征信息，则所述第二边界节点向控制器发送第二消息，所述第二消息包括所述特征信息和所述第二边界节点的标识信息；
    所述控制器接收所述第二边界节点发送的所述第二消息；
    所述控制器确定所述第一边界节点为在所述SDN过渡网络中接收所述报文的入边界节点；所述第二边界节点为在所述SDN过渡网络中接收所述报文的出边界节点；
    所述控制器根据所述第一边界节点的标识信息，所述第二边界节点的标识信息和策略控制因子计算出所述特征信息对应的智能路由业务流所需经过的流转发路径，其中，所述策略控制因子是根据所述用户侧设备发送的智能路由业务请求报文中的约束条件确定；
    所述控制器为经过所述流转发路径上的每个节点分别生成各自对应的流表项，将所述流表项分别发送给对应的节点，所述节点包括所述第一边界节点以及所述第二边界节点；
    所述第一边界节点以及第二边界节点接收所述控制器发送的流表项；
    所述第一边界节点以及第二边界节点根据所述流表项处理所述用户侧设备发来的报文。
  15. 一种流转发方法，其特征在于，所述方法应用于(SDN migration network) SDN过渡网络，所述方法包括如下步骤：
    第一边界节点接收用户侧设备发送的业务报文；所述第一边界节点在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的；
    所述第一边界节点向控制器发送第一消息，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息；
    所述控制器接收第一边界节点发送的第一消息；
    第二边界节点接收所述第一边界节点转发的用户侧设备发送的业务报文；所述第二边界节点在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；
    所述第二边界节点向控制器发送第二消息，所述第二消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息；
    所述控制器接收第二边界节点发送的第二消息；
    所述控制器确定所述第一边界节点为在所述SDN过渡网络中接收所述报文的入边界节点；所述第二边界节点为在所述SDN过渡网络中接收所述报文的出边界节点；
    所述控制器根据所述第一边界节点的标识信息，所述第二边界节点的标识信息和策略控制因子计算出所述特征信息对应的智能路由业务流所需经过的流转发路径；
    所述控制器为经过所述流转发路径上的每个节点分别生成各自对应的第二流表项，将所述第二流表项分别发送给对应的节点，其中，所述策略控制因子是根据所述用户侧设备发送的智能路由业务请求报文中的约束条件确定，所述节点包括第一边界节点以及第二边界节点；
    所述第一边界节点以及第二边界节点接收所述控制器发送的第二流表项，所述第二流表项满足所述智能路由业务请求报文中的约束条件；
    所述第一边界节点以及第二边界节点根据所述第二流表项处理所述业务报文。
  16. 一种混合转发设备，其特征在于，所述设备包括：第一接收模块、查找接收模块、第二接收模块以及处理模块，
    所述第一接收模块用于接收用户侧设备发送的智能路由业务请求报文，所述智能路由业务请求报文用于请求业务服务器为所述用户侧设备提供智能路由业务，所述智能路由业务请求报文包括建立所述智能路由业务所需的约束条件，所述第一接收模块将所述智能路由业务请求报文向所述查找接收模块发送；
    所述查找接收模块用于接收所述智能路由业务请求报文，在所述边界节点在流表中没有查找到所述智能路由业务请求报文中的特征信息对应的匹配流表项时，所述对应的匹配流表项包括所述特征信息，所述边界节点向控制器发送第一消息，所述第一消息包括所述特征信息和所述边界节点的标识信息，所述边界节点为在所述SDN过渡网络中接收所述智能路由业务请求报文的入边界节点或出边界节点；
    所述第二接收模块用于接收所述控制器发送的第一流表项，所述第一流表项根据所述第一消息生成且满足所述约束条件，所述第二接收模块将所述第一流表项发送给所述处理模块；
    所述处理模块用于接收所述第一流表项，根据所述第一流表项处理所述用户侧设备发来的报文。
  17. 根据权利要求16所述的设备，其特征在于，所述第一消息包括所述特征信息和所述边界节点的标识信息具体为：所述第一消息包括所述智能路由业务请求报文和所述边界节点的标识信息，其中，所述智能路由业务请求报文包含所述特征信息。
  18. 根据权利要求16所述的设备，其特征在于，所述第一消息包括所述特征信息和所述边界节点的标识信息具体为：所述第一消息包括所述智能路由业务请求报文的镜像报文和所述边界节点的标识信息，其中，所述智能路由业务请求报文的镜像报文为所述智能路由业务请求报文的复制报文，所述智能路由业务请求报文包含所述特征信息；所述处理模块还用于所述边界节点根据传统IP路由方式发送所述智能路由业务请求报文。
  19. 根据权利要求16-18所述的设备，其特征在于，所述第一消息还包括接收所述智能路由业务请求报文的接口的接口属性信息，所述接口属性信息用于识别所述边界节点为所述智能路由业务请求报文在所述SDN过渡网络的入边界节点或出边界节点。
  20. 根据权利要求16-19所述的设备，其特征在于，所述特征信息至少包括所述智能路由业务请求报文中的以下一种：源地址、目的地址、源端口、目的端口以及协议号。
  21. 一种混合转发设备，其特征在于，所述设备包括：第一接收模块、查找模块、发送模块、第二接收模块以及处理模块，
    所述第一接收模块用于接收用户侧设备发送的业务报文，所述第一接收模块将所述业务报文向所述查找模块发送；
    所述查找模块用于接收所述业务报文，在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的；所述查找模块将查找结果向所述发送模块发送；
    所述发送模块用于接收所述查找结果，向控制器发送第一消息，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息，所述接口属性信息用于识别所述边界节点为所述业务报文在所述SDN过渡网络的入边界节点或出边界节点；
    所述第二接收模块用于接收所述控制器发送的第二流表项，所述第二流表项满足所述智能路由业务请求报文中的约束条件，所述第二接收模块将所述第二流表项向所述处理模块发送；
    所述处理模块用于接收所述第二流表项，根据所述第二流表项处理所述业务报文。
  22. 根据权利要求21所述的设备，其特征在于，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口属性信息具体为：所述第一消息包括所述业务报文的镜像报文和所述边界节点的标识信息，其中，所述业务报文的镜像报文为所述业务报文的复制报文，所述业务报文包含所述特征信息；所述处理模块还用于所述边界节点根据传统IP路由方式发送所述业务报文。
  23. 根据权利要求21或22任一权项所述的设备，其特征在于，所述特征信息至少包括所述业务请求报文中的以下一种：源地址、目的地址，源端口、目的端口以及协议号。
  24. 一种控制器，其特征在于，所述控制器还包括：接收模块、确定模块、计算模块以及发送模块，
    所述接收模块用于接收第一边界节点发送的第一消息，所述第一消息包括用户侧设备发送的报文的特征信息和所述第一边界节点的标识信息，以及接收第二边界节点发送的第二消息，所述第二消息包括所述特征信息和所述第二边界节点的标识信息，所述接收模块将所述第一消息和第二消息向所述确定模块；
    所述确定模块用于确定所述第一边界节点为在所述SDN过渡网络中接收所述报文的入边界节点，所述第二边界节点为在所述SDN过渡网络中接收所述报文的出边界节点，所述确定模块将确定的结果向所述计算模块发送；
    所述计算模块用于接收所述确定的结果，为经过所述流转发路径上的每个节点分别生成各自对应的流表项，所述计算模块将所述流表项发送给所述发送模块；
    所述发送模块用于接收所述流表项，将所述流表项分别发送给对应的节点，其中，所述策略控制因子是根据所述用户侧设备发送的智能路由业务请求报文中的约束条件确定。
  25. 根据权利要求24所述的控制器，其特征在于，所述确定模块还用于当所述报文为所述智能路由业务请求报文时，根据接收到所述第一消息和第二消息的先后顺序确定所述第一边界节点为入边界节点和所述第二边界节点为出边界节点。
  26. 根据权利要求24所述的控制器，其特征在于，所述第一消息还包括所述第一边界节点接收所述报文的第一接口的第一接口属性信息，所述第一接口属性信息用于识别所述第一边界节点为所述报文在所述SDN过渡网络的入节点；所述第二消息还包括所述第二边界节点接收所述报文的第二接口的第二接口属性信息，所述第二接口属性信息用于识别所述第二边界节点为所述业务报文在所述SDN过渡网络的出节点；所述处理模块还用于根据接收到所述第一接口属性信息和第二接口属性信息确定所述第一边界节点为入边界节点和所述第二边界节点为出边界节点。
  27. 根据权利要求26所述的控制器，其特征在于，所述发送模块还用于当所述报文为业务报文时，向所述第一边界节点和所述第二边界节点分别发送第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的。
  28. 根据权利要求24-27所述的控制器，其特征在于，所述接收模块还用于接收策略服务器发送的所述策略控制因子和所述特征信息。
  29. 一种流转发系统，其特征在于，包括多个混合转发设备以及控制器，所述多个混合转发设备之间拓扑连接构成SDN过渡网络，位于SDN过渡网络边界的混合转发设备为边界节点，所述边界节点与所述控制器能够进行通信，所述边界节点包括第一边界节点以及第二边界节点，
    第一边界节点接收用户侧设备发送的智能路由业务请求报文，所述智能路由业务请求报文用于请求业务服务器为所述用户侧设备提供智能路由业务，所述智能路由业务请求报文包括建立所述智能路由业务所需的约束条件；
    如果所述第一边界节点在流表中没有查找到所述智能路由业务请求报文中的特征信息对应的匹配流表项，所述对应的匹配流表项包括所述特征信息，则所述第一边界节点向控制器发送第一消息，所述第一消息包括所述特征信息和所述第一边界节点的标识信息；
    所述控制器接收所述第一边界节点发送的所述第一消息；
    第二边界节点接收所述第一边界节点转发的用户侧设备发送的智能路由业务请求报文；
    如果所述第二边界节点在流表中没有查找到所述智能路由业务请求报文中的特征信息对应的匹配流表项，所述对应的匹配流表项包括所述特征信息，则所述第二边界节点向控制器发送第二消息，所述第二消息包括所述特征信息和所述第二边界节点的标识信息；
    所述控制器接收所述第二边界节点发送的所述第二消息；
    所述控制器确定所述第一边界节点为在所述SDN过渡网络中接收所述报文的入边界节点；所述第二边界节点为在所述SDN过渡网络中接收所述报文的出边界节点；
    所述控制器根据所述第一边界节点的标识信息，所述第二边界节点的标识信息和策略控制因子计算出所述特征信息对应的智能路由业务流所需经过的流转发路径，其中，所述策略控制因子是根据所述用户侧设备发送的智能路由业务请求报文中的约束条件确定；
    所述控制器为经过所述流转发路径上的每个节点分别生成各自对应的流表项，将所述流表项分别发送给对应的节点，所述节点包括所述第一边界节点以及所述第二边界节点；
    所述第一边界节点以及第二边界节点接收所述控制器发送的流表项；
    所述第一边界节点以及第二边界节点根据所述流表项处理所述用户侧设备发来的报文。
  30. 一种流转发系统，其特征在于，包括多个混合转发设备以及控制器，所述多个混合转发设备之间拓扑连接构成SDN过渡网络，位于SDN过渡网络边界的混合转发设备为边界节点，所述边界节点与所述控制器能够进行通信，所述边界节点包括第一边界节点以及第二边界节点，
    第一边界节点接收用户侧设备发送的业务报文；所述第一边界节点在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；所述第一流表项由控制器根据所述用户侧设备发送的智能路由业务请求报文生成的；
    所述第一边界节点向控制器发送第一消息，所述第一消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息；
    所述控制器接收第一边界节点发送的第一消息；
    第二边界节点接收所述第一边界节点转发的用户侧设备发送的业务报文；所述第二边界节点在流表中查找到所述业务报文中的特征信息对应的第一流表项，所述第一流表项包括动作，所述动作用于向所述控制器发送消息；
    所述第二边界节点向控制器发送第二消息，所述第二消息包括所述特征信息、所述边界节点的标识信息和接收所述业务报文的接口的接口属性信息；
    所述控制器接收第二边界节点发送的第二消息；
    所述控制器确定所述第一边界节点为在所述SDN过渡网络中接收所述报文的入边界节点；所述第二边界节点为在所述SDN过渡网络中接收所述报文的出边界节点；
    所述控制器根据所述第一边界节点的标识信息，所述第二边界节点的标识信息和策略控制因子计算出所述特征信息对应的智能路由业务流所需经过的流转发路径；
    所述控制器为经过所述流转发路径上的每个节点分别生成各自对应的第二流表项，将所述第二流表项分别发送给对应的节点，其中，所述策略控制因子是根据所述用户侧设备发送的智能路由业务请求报文中的约束条件确定，所述节点包括第一边界节点以及第二边界节点；
    所述第一边界节点以及第二边界节点接收所述控制器发送的第二流表项，所述第二流表项满足所述智能路由业务请求报文中的约束条件；
    所述第一边界节点以及第二边界节点根据所述第二流表项处理所述业务报文。
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