WO2018024053A1 - Procédé de transmission de données, contrôleur centralisé, appareil de plan de transmission, et dispositif de communication - Google Patents

Procédé de transmission de données, contrôleur centralisé, appareil de plan de transmission, et dispositif de communication Download PDF

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Publication number
WO2018024053A1
WO2018024053A1 PCT/CN2017/090620 CN2017090620W WO2018024053A1 WO 2018024053 A1 WO2018024053 A1 WO 2018024053A1 CN 2017090620 W CN2017090620 W CN 2017090620W WO 2018024053 A1 WO2018024053 A1 WO 2018024053A1
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WIPO (PCT)
Prior art keywords
communication device
transmission path
data packet
fast transmission
forwarding plane
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PCT/CN2017/090620
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English (en)
Chinese (zh)
Inventor
胡汉强
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胡汉强
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.)
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Publication date
Priority claimed from CN201610805051.0A external-priority patent/CN106254242A/zh
Application filed by 胡汉强 filed Critical 胡汉强
Priority to CN201780000597.1A priority Critical patent/CN107690783B/zh
Publication of WO2018024053A1 publication Critical patent/WO2018024053A1/fr
Priority to US16/262,003 priority patent/US20190166042A1/en

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  • the embodiments of the present application relate to the field of communications technologies, and in particular, to a data transmission method, a centralized controller, a forwarding plane device, and a communication device.
  • SDN Software Defined Network
  • Emulex network is a new network innovation architecture of Emulex network. It is an implementation method of network virtualization. Its core technology idea is to separate the control plane of the network device from the data plane. Flexible control of network traffic makes the network more intelligent as a pipeline.
  • the current SDN network performs centralized routing calculation on all IP data packets by the centralized controller, and then the forwarding plane device forwards the IP data packets according to the path selected by the centralized controller until the IP data packets are transmitted to the destination. All IP data packets exchanged between the local communication device and the peer communication device are routed through the centralized controller, so that the burden of the centralized controller is heavy, and the end-to-end delay is also increased.
  • the technical problem to be solved by the embodiments of the present application is to provide a data transmission method, a centralized controller, a forwarding plane device, and a communication device, by establishing a fast transmission path between the local communication device and the opposite communication device, and transmitting data. It is not necessary to go through the centralized controller for route calculation, and it can be quickly forwarded through the forwarding plane device to reach the destination.
  • a technical solution adopted by the embodiment of the present application is to provide a data transmission method, including receiving a path construction request sent by a local communication device, where the path construction request carries a local communication device and a peer end Identifying the communication device; constructing a fast transmission path between the local communication device and the opposite communication device according to the path construction request; transmitting a fast transmission path to the local communication device and the opposite communication device, so that the local communication device and the pair When transmitting data packets between the end communication devices, the fast transmission path is added to the data packet, and the forwarding plane device in the network is forwarded according to the fast transmission path carried by the data packet.
  • the fast transmission path includes a first transmission path and a second transmission path, where the first transmission path is a path of the opposite communication device to the local communication device, and the second transmission path is the local communication device to the opposite communication device.
  • the data includes a first transport packet and a second transport packet, wherein the first transport packet is a data packet sent by the peer communication device to the local communication device, and the second transport packet is directly addressed to the local communication device.
  • the data packet sent by the end communication device; the step of transmitting the fast transmission path to the local communication device and the opposite communication device includes: adding the first transmission path to the path construction request, and forwarding the first transmission to the opposite communication device a path construction request of the path; receiving a response message that the peer communication device agrees to establish a fast transmission path, wherein when the peer communication device sends the first transmission packet to the local communication device, adding the first transmission path to the first transmission packet.
  • the forwarding device that receives the first transport packet in the network forwards according to the first transmission path carried by the first transport packet; adds the second transmission path to the response packet, and forwards the bearer to the local communication device.
  • the forwarding device of the packet forwards according to the second transmission path carried by the second transmission packet.
  • the abnormality packet of the forwarding plane device in the receiving network is abnormal, wherein the abnormal packet carries the identifier of the forwarding plane device that has the abnormality; and determines whether the first transmission path and the second transmission path include the forwarding plane device with the abnormality; Updating the first transmission path if the first transmission path includes the forwarding plane device with the abnormality, and sending the updated first transmission path to the peer communication device; if the second transmission path includes the forwarding plane device with the abnormality, updating The second transmission path transmits the updated second transmission path to the local communication device.
  • the path construction request sent by the local communication device is received, where the path construction request carries the identifiers of the local communication device and the opposite communication device;
  • Sending a fast transmission path to the local communication device so that when the local communication device transmits a data packet to the opposite communication device, the fast transmission path is added to the data packet, and the forwarding plane device in the network is configured according to the data packet.
  • the fast transmission path carried is forwarded.
  • the path construction request sent by the local communication device is received, and the path construction request carries the identifiers of the local communication device and the opposite communication device; and the fast transmission between the local communication device and the opposite communication device is constructed according to the path construction request.
  • the fast transmission path of the digital signature with the centralized controller is added to the data packet, and the forwarding plane device in the network is According to the number of centralized controllers After the word signature verifies that the fast transmission path is correct, it is forwarded according to the fast transmission path.
  • the path construction request sent by the local communication device is received, where the path construction request carries the identifiers of the local communication device and the opposite communication device;
  • the path acquires the next forwarding plane device; the next forwarding plane device forwards the data packet.
  • the method Before the forwarding of the data packet by the device to the next forwarding plane, the method includes: determining whether the device is adjacent to the next forwarding plane device, and whether the next forwarding plane device is running normally; if the device itself is adjacent to the next forwarding plane device, and If the next forwarding plane device is running normally, the data packet is forwarded to the next forwarding plane device; otherwise, the data packet is reported to the centralized controller to enable the centralized controller to re-route the data packet.
  • the digital signature of the centralized controller verifying the fast transmission path according to the digital signature of the centralized controller; when the fast transmission path is verified to be correct, acquiring the next forwarding plane device according to the fast transmission path; forwarding to the next forwarding plane device data pack.
  • a technical solution adopted by the embodiment of the present application is to provide a data transmission method, including: after receiving a fast transmission path between a communication device and a peer communication device by the communication device receiving the centralized controller, Returning fast transmission path; the communication device adds a fast transmission path to the data packet when transmitting the data packet to the opposite communication device; the communication device sends the data packet carrying the fast transmission path to the opposite communication device, wherein, the network The forwarding plane device forwards according to the fast transmission path carried by the data packet.
  • the receiving centralized controller constructs a fast transmission between the communication device and the peer communication device After the path, the fast transmission path returned, the fast transmission path is added with the digital signature of the centralized controller; the fast transmission path is verified according to the digital signature of the centralized controller; when the fast transmission path is verified correctly, and when the communication device needs When transmitting a data packet to the peer communication device, adding a fast transmission path of the digital signature with the centralized controller to the data packet; and transmitting, to the opposite communication device, a data packet carrying the fast transmission path, where forwarding in the network After receiving the data packet and verifying the correctness of the fast transmission path according to the digital signature of the centralized controller, the device forwards according to the fast transmission path.
  • the present application also adopts a centralized controller, including: a first receiving module, configured to receive a path construction request sent by the local communication device, where the path construction request carries the local communication device and the peer communication An identifier of the device, configured to construct a fast transmission path between the local communication device and the peer communication device according to the path construction request, and a sending module, configured to send a fast transmission path to the local communication device and the opposite communication device
  • the fast transmission path is added to the data packet, and the forwarding plane device in the network forwards according to the fast transmission path carried by the data packet.
  • the fast transmission path includes a first transmission path and a second transmission path, where the first transmission path is a path of the opposite communication device to the local communication device, and the second transmission path is the local communication device to the opposite communication device.
  • the data includes a first transport packet and a second transport packet, where the first transport packet is a data packet sent by the peer communication device to the local communication device, and the second transport packet is sent to the peer communication device by the local communication device.
  • the sending module includes: a first adding unit, configured to add the first transmission path to the path construction request; and a first sending unit, configured to forward the path construction request carrying the first transmission path to the opposite communication device a receiving unit, configured to receive a response message that the peer communication device agrees to establish a fast transmission path, where the peer communication device adds the first transmission path to the first transmission packet when transmitting the first transmission packet to the local communication device
  • the forwarding plane device that receives the first transport packet in the network forwards according to the first transmission path carried by the first transport packet; the second add The second sending unit is configured to add the second transmission path to the response message, and the second sending unit is configured to forward the response message carrying the second transmission path to the local communication device, so that the local communication device is to the opposite communication device.
  • the centralized controller further includes: a second receiving module, configured to receive an abnormal abnormality packet of the forwarding plane device in the network, where the abnormal packet carries an identifier of the forwarding plane device with an abnormality; a module, configured to determine whether the first transmission path and the second transmission path include a forwarding plane device with an abnormality; and a first update sending module, configured to update when the determining module determines that the first transmission path includes an abnormal forwarding device a first transmission path, and sending the updated first transmission path to the peer communication device; and a second update sending module, configured to update the second transmission when the determining module determines that the second transmission path includes the forwarding plane device with an abnormality And transmitting the updated second transmission path to the local communication device.
  • a second receiving module configured to receive an abnormal abnormality packet of the forwarding plane device in the network, where the abnormal packet carries an identifier of the forwarding plane device with an abnormality
  • a module configured to determine whether the first transmission path and the second transmission path include a forwarding plane device with an abnormality
  • the present application also adopts a centralized controller, including: a first receiving module, configured to receive a path construction request sent by a local communication device, where the path construction request carries a local communication device and a pair Identification of the end communication device;
  • a building module configured to construct a fast transmission path between the local communication device and the peer communication device according to the path construction request
  • a sending module configured to send a fast transmission path to the local communication device, so that when the local communication device transmits the data packet to the opposite communication device, the fast transmission path is added to the data packet, and the forwarding surface in the network is The device forwards according to the fast transmission path carried by the data packet.
  • the present application also employs another centralized controller, including: a first receiving module, configured to receive a path construction request sent by the local communication device, where the path construction request carries the local communication device and the opposite end An identifier of the communication device; a building module, configured to construct a fast transmission path between the local communication device and the opposite communication device according to the path construction request, and add a digital signature of the centralized controller to the fast transmission path; and a sending module, configured to: Transmitting a fast transmission path with a digital signature of the centralized controller to the local communication device and the peer communication device to transmit a data packet between the local communication device and the opposite communication device, and at the digital signature according to the centralized controller After verifying that the fast transmission path is correct, the fast transmission path of the digital signature with the centralized controller is added to the data packet, and the forwarding plane device in the network verifies that the fast transmission path is correct according to the digital signature of the centralized controller, according to the fast transmission. The path is forwarded.
  • a first receiving module configured to receive a
  • the present application further employs another centralized controller, including: a first receiving module, configured to receive a path construction request sent by the local communication device, where the path construction request carries the local communication device and Identification of the peer communication device;
  • a building module configured to construct a fast transmission path between the local communication device and the peer communication device according to the path construction request, and add a digital signature of the centralized controller to the fast transmission path;
  • a sending module configured to send a fast transmission path with a digital signature to the local communication device, so that the local communication device transmits the data packet to the opposite communication device, and verify the fast according to the digital signature of the centralized controller
  • the fast transmission path of the digital signature with the centralized controller is added to the data packet, and the forwarding plane device in the network verifies that the fast transmission path is correct according to the digital signature of the centralized controller. And forwarding according to the fast transmission path carried by the data packet.
  • the present application also adopts a forwarding plane device, including: a receiving module, configured to receive a data packet transmitted when communication between a local communication device and a peer communication device is performed, where the data packet carries the packet And a fast transmission path for communication between the end communication device and the peer communication device; the obtaining module is configured to acquire the next forwarding plane device according to the fast transmission path, and the forwarding module is configured to forward the data packet to the next forwarding plane device.
  • the forwarding module includes: a determining unit, configured to determine whether it is adjacent to the next forwarding plane device, and whether the next forwarding plane device is in normal operation; and the forwarding unit is configured to forward the data packet to the next forwarding plane device. After the judging module judges that it is adjacent to the next forwarding plane device, and the next forwarding plane device operates normally, the data packet is forwarded to the next forwarding plane device; the reporting unit is configured to report the data packet to the centralized controller to enable centralized control. The device reroutes the packet.
  • the present application further employs another forwarding plane device, including: a receiving module, configured to receive a data packet transmitted when communication between the local communication device and the peer communication device is performed, where the data packet carries a fast transmission path for communication between the local communication device and the opposite communication device, and the fast transmission path is added with a digital signature of the centralized controller; the verification module verifies the fast transmission path according to the digital signature of the centralized controller; And, when the fast transmission path is verified to be correct, acquiring the next forwarding plane device according to the fast transmission path; and the forwarding module, configured to forward the data packet to the next forwarding plane device.
  • a receiving module configured to receive a data packet transmitted when communication between the local communication device and the peer communication device is performed, where the data packet carries a fast transmission path for communication between the local communication device and the opposite communication device, and the fast transmission path is added with a digital signature of the centralized controller
  • the verification module verifies the fast transmission path according to the digital signature of the centralized controller
  • the fast transmission path is verified to be correct
  • the present application also employs a communication device, comprising: a receiving module, configured to receive a fast transmission path returned by the centralized controller after constructing a fast transmission path between the communication device and the peer-to-peer device; adding a module, When the data packet is sent to the peer communication device, the fast transmission path is added to the data packet; the sending module sends the data packet carrying the fast transmission path to the peer communication device, where the forwarding plane device in the network according to the data The fast transmission path carried by the packet is forwarded.
  • a receiving module configured to receive a fast transmission path returned by the centralized controller after constructing a fast transmission path between the communication device and the peer-to-peer device
  • adding a module When the data packet is sent to the peer communication device, the fast transmission path is added to the data packet; the sending module sends the data packet carrying the fast transmission path to the peer communication device, where the forwarding plane device in the network according to the data The fast transmission path carried by the packet is forwarded.
  • the present application also employs another communication device, including: a receiving module, configured to receive the fast transmission returned after the centralized controller establishes a fast transmission path between the communication device and the peer-to-peer device. a path, wherein the fast transmission path is added with a digital signature of the centralized controller; a verification module for authenticating the fast transmission path according to the digital signature of the centralized controller; and a module for when the fast transmission path is verified to be correct, and
  • the communication device needs to send a data packet to the opposite communication device, the fast transmission path of the digital signature with the centralized controller is added to the data packet; and the sending module is configured to send the fast communication path to the opposite communication device.
  • the data packet wherein the forwarding plane device in the network receives the data packet, and verifies the correctness of the fast transmission path according to the digital signature of the centralized controller, and then forwards according to the fast transmission path.
  • the beneficial effects of the embodiments of the present application are: different from the prior art, the present application provides a method for implementing data transmission in an SDN network by establishing a fast transmission path from the local communication device to the opposite communication device. After the fast transmission path is added to the data packet, the forwarding plane device in the network directly forwards according to the fast transmission path carried by the data packet when receiving the data packet, and does not need the forwarding device in the network to forward the data packet.
  • the centralized controller is requested to forward the route, which greatly reduces the load of the centralized controller, and improves the speed at which the forwarding plane device forwards the data packet and improves the transmission capability of the network.
  • FIG. 1 is a schematic diagram of a first transmission path implementation manner of a data transmission method according to the present application
  • FIG. 2 is a schematic diagram of a second transmission path implementation manner of a data transmission method according to the present application.
  • FIG. 3 is a flow chart of a first embodiment of a data transmission method of the present application.
  • FIG. 4 is a detailed flowchart of a first embodiment of a data transmission method according to the present application.
  • FIG. 5 is a flowchart of a second embodiment of a data transmission method according to the present application.
  • FIG. 6 is a flowchart of a third embodiment of a data transmission method of the present application.
  • FIG. 7 is a flowchart of a fourth embodiment of a data transmission method of the present application.
  • FIG. 8 is a flowchart of a fifth embodiment of a data transmission method according to the present application.
  • FIG. 9 is a flowchart of a sixth embodiment of a data transmission method of the present application.
  • FIG. 10 is a detailed flowchart of a sixth embodiment of a data transmission method according to the present application.
  • FIG. 11 is a schematic diagram of a seventh embodiment of a data transmission method according to the present application.
  • FIG. 12 is a schematic diagram of an eighth embodiment of a data transmission method according to the present application.
  • FIG. 13 is a schematic diagram of a ninth embodiment of a data transmission method according to the present application.
  • FIG. 14 is a schematic diagram of a first embodiment of a centralized controller of the present application.
  • 15 is a schematic diagram of a second embodiment of a centralized controller of the present application.
  • 16 is a schematic diagram of a third embodiment of a centralized controller of the present application.
  • FIG. 17 is a schematic diagram of a fourth embodiment of a centralized controller of the present application.
  • FIG. 18 is a schematic diagram of a fifth embodiment of a centralized controller of the present application.
  • FIG. 19 is a schematic diagram of a sixth embodiment of a centralized controller for performing the data transmission method of the present application.
  • FIG. 20 is a schematic diagram of a first embodiment of a forwarding plane device of the present application.
  • 21 is a schematic diagram of a second embodiment of a forwarding plane device of the present application.
  • FIG. 22 is a schematic diagram of a third embodiment of a forwarding plane device for performing the data transmission method of the present application.
  • FIG. 23 is a schematic diagram of a first embodiment of a communication device
  • Figure 24 is a schematic illustration of a second embodiment of a communication device
  • Figure 25 is a schematic diagram of a third embodiment of a communication device performing the data transmission method of the present application.
  • the data transmission system 100 includes a centralized controller 101, a local communication device 102, a plurality of forwarding plane devices 103, and a peer communication device 104.
  • the local communication device 102 sends a setup build path request to the peer communication device 104
  • the path construction request first arrives at the centralized controller 101, and the centralized controller 101 recognizes that this is a request to establish a fast transmission path, and constructs according to the path.
  • the device 103 may be a physical forwarding plane device or a virtual forwarding plane device, for example, a virtual switch device, and the two or more virtual forwarding plane devices 103 shown in the figure may be on the same physical forwarding plane device. in.
  • the path of the local communication device 102 to the peer communication device 104 may be different from the fast transmission path of the peer communication device 104 to the local communication device 102.
  • the fast transmission path includes a first transmission path and a second transmission path, where the first transmission path is a path from the peer communication device 104 to the local communication device 102, and the second transmission path is a path from the local communication device 102 to the opposite communication device 104.
  • the data includes a first transport packet and a second transport packet, wherein the first transport packet is a data packet sent by the peer communication device 104 to the local communication device 102, and the second transport packet is the local communication device 102 to the opposite communication device.
  • the data packet sent by the data packet is sent to the local communication device 102 and the peer communication device 104 by adding the first transmission path to the path construction request and forwarding the first transmission path to the opposite communication device 104.
  • a path construction request of the transmission path the receiving communication device 104 agrees to establish a response message of the fast transmission path, wherein when the opposite communication device 104 transmits the first transmission packet to the local communication device 102, the first transmission path is added to In the first transport packet, the forwarding plane device 103 that receives the first transport packet in the network forwards according to the first transport path carried by the first transport packet;
  • the second transmission path is added to the response message, and the response message carrying the second transmission path is forwarded to the local communication device 102, so that when the local communication device 102 sends the second transmission packet to the opposite communication device 104,
  • the second transmission path is added to the second transmission packet, and the switching device that receives the second transmission packet in the network is forwarded according to the second transmission path carried by the second transmission packet.
  • the forwarding plane device in the network receives the data packet.
  • Direct forwarding according to the fast transmission path carried by the data packet does not require the intra-network forwarding plane device to forward the data packet to the centralized controller for forwarding routing, which greatly reduces the load of the centralized controller and improves forwarding of the forwarding plane device.
  • the speed of the packet increases the transmission capacity of the network.
  • the access switch first receives the path sent by the centralized controller, and after receiving the data packet sent by the terminal, obtains the path by querying the path table, and then The path is attached to the packet, and finally the packet carrying the path is forwarded.
  • the embodiments of the present application can implement the following beneficial distinguishing features: 1.
  • the local communication device or the peer communication device can directly deliver the data packet according to the centralized controller.
  • the path selects the correct access device, virtual access device or the first forwarding plane device, and then attaches the data packet to the corresponding access device, virtual access device or forwarding device, and then Forward it out.
  • the entry of the path table is generally very large, it is necessary to take the path according to the path table after receiving the data packet, which will greatly increase the network delay.
  • the implementation of the present application does not need to obtain the path through the query path table, thereby avoiding The resulting network delay.
  • the implementation mode does not need to pass the access switch to receive the path sent by the centralized controller, which avoids the following problem: the path entry of the access switch is difficult to maintain. When the terminal moves, the corresponding entry in the old access switch needs to be After the deletion, new entries are added to the new access switch. This process causes heavy system load and sometimes the entries cannot be updated in time. In addition, the access switch needs to reserve a large entry space. This will result in high system cost and low performance.
  • FIG. 3 is a flowchart of a first embodiment of a data transmission method according to the present application.
  • the data transmission method includes: Step 201: Receive a path construction request sent by a local communication device, where the path construction request carries a Identification of the end communication device and the peer communication device;
  • the local communication device and the opposite communication device are both ends of communication, the identifier of the local communication device is a mark of the local communication device, the identifier of the opposite communication device is a mark of the opposite communication device, and the local communication device and The identity of the peer communication device is unique.
  • the tag can be an ID or an IP address.
  • the path construction request may be an IP packet sent by the local communication device to the peer communication device, where the IP packet contains the identifier of the local communication device and the peer communication device, and the centralized controller passes the IP packet and passes the identifier.
  • the identification of the local communication device and the peer communication device is identified to construct a fast transmission path.
  • Step 202 Build a fast transmission path between the local communication device and the peer communication device according to the path construction request.
  • the centralized routing table records routing information of devices on each forwarding plane in the network. Therefore, a fast transmission path between the local communication device and the peer communication device can be constructed according to the centralized routing table. It is worth noting that if the local communication device is not in the same domain as the peer communication device, when constructing the fast transmission path, it is based on two centralized controllers of the domain where the local communication device and the peer communication device are located. The centralized routing table is constructed. When the local communication device and the peer communication device are in the same domain, the centralized routing table of the centralized controller on the domain is directly constructed.
  • Step 203 Send a fast transmission path to the local communication device and the opposite communication device, so that when the data packet is transmitted between the local communication device and the opposite communication device, the fast transmission path is added to the data packet, and The forwarding plane device in the network forwards according to the fast transmission path carried by the data packet.
  • the forwarding plane device in the network After the fast transmission path is added to the data packet, the forwarding plane device in the network directly forwards the data according to the fast transmission path carried by the data packet when the data packet is received. Both requests the forwarding of the route to the centralized controller, which greatly reduces the load of the centralized controller, and improves the speed at which the forwarding plane device forwards the data packet and improves the transmission capability of the network. It is worth noting that the forwarding plane device in the network refers to the forwarding plane between the peer communication device and the local communication device.
  • the forwarding plane device in the network may be a physical forwarding plane device or a virtual forwarding plane device, for example, a virtual switch device, or two or more virtual forwarding plane devices on the same physical forwarding plane. In the device.
  • the fast transmission path between the local communication device and the peer communication device may be one or more.
  • multiple fast transmission paths may be used alternately, which may speed up the transmission speed. If there is a problem with a fast transmission path, you can call other fast transmission paths for transmission, which is very convenient. Multiple fast transmission paths can also be graded. The first one uses a high-level path for transmission. When a high-level path has a problem, the next-level path is used, and so on.
  • the fast transmission path of the peer communication device transmitting data to the local communication device may be different from the fast transmission path of the local communication device transmitting data to the opposite communication device, and the fast transmission path includes the first transmission.
  • Step 203 includes: Step 2031: Add the first transmission path to the path construction request, and forward the path construction request carrying the first transmission path to the peer communication device; the peer communication device receives The first transmission path is saved after the path construction request carrying the first transmission path.
  • Step 2032 Receive a response message that the peer communication device agrees to establish a fast transmission path.
  • the first transmission path may also be added to the first transmission packet.
  • the forwarding plane device that receives the first transmission packet in the network forwards according to the first transmission path carried by the first transmission packet; the response message that agrees to establish the fast transmission path refers to the peer communication device agrees to communicate with the local end.
  • the device establishes a fast transmission path, and when the subsequent peer communication device sends the first data packet to the local communication device, the first transmission path is added to the first data packet.
  • Step 2033 Add the second transmission path to the response packet, and forward the response packet carrying the second transmission path to the local communication device, so that the local communication device sends the second transmission packet to the opposite communication device.
  • the second transmission path is added to the second transmission packet, and the switching device that receives the second transmission packet in the network is forwarded according to the second transmission path carried by the second transmission packet.
  • the response message already includes the second transmission path, and the second transmission path is added to the response message, and then the response message is forwarded to the local communication device, so that the local communication device simultaneously records the second transmission path.
  • the subsequent local communication device sends the second data packet to the opposite communication device, the second transmission path is added to the second data packet.
  • the execution body of the data transmission method provided by steps 201-203 in the embodiment of the present application may be a centralized controller.
  • a fast transmission path between the peer communication device and the local communication device is constructed, and when the data packet is transmitted between the peer communication device and the local communication device, the fast transmission path is added to the data packet.
  • the forwarding plane device in the network receives the data packet, it directly forwards the data according to the fast transmission path carried by the data packet, and does not need to forward the data packet to the centralized controller to request the forwarding route.
  • the load of the centralized controller is alleviated, and the speed at which the forwarding plane device forwards the data packet is improved, and the transmission capability of the network is improved.
  • FIG. 5 is a flowchart of a second embodiment of a data transmission method according to the present application.
  • the second embodiment of the data transmission method is different from the first embodiment.
  • the data transmission method further includes: Step 301: Receiving a network
  • the forwarding plane device has an abnormal exception packet, where the abnormal packet carries the identifier of the forwarding plane device with the abnormality; the identifier of the forwarding plane device is the unique identifier of the forwarding plane device.
  • Step 302 Determine whether the first transmission path and the second transmission path include a forwarding plane device with an abnormality; when the first transmission path includes a forwarding plane device with an abnormality, the first transmission path has a breakpoint, and the first transmission path cannot be The first transmission path and the second transmission path need to be updated.
  • Step 303 If the first transmission path includes a forwarding plane device with an abnormality, update the first transmission path, and send the updated first transmission path to the peer communication device; updating the first transmission path means rebuilding the first a transmission path such that the first transmission path does not include a forwarding plane device with an abnormality, and the updated first transmission path is traversable.
  • Step 304 If the second transmission path includes the forwarding plane device with an abnormality, update the second transmission path, and send the updated second transmission path to the local communication device. Updating the second transmission path means reconstructing the second transmission path, so that the second transmission path does not include the forwarding plane device with the abnormality, so as to ensure that the updated second transmission path is traversable.
  • the execution body of the data transmission method provided by steps 301-304 in the embodiment of the present application may be a centralized controller.
  • the transmission path including the forwarding plane device in which the abnormality occurs is updated, and is sent to the corresponding communication. End, to ensure that the communication terminal can be used
  • the transmission path transmits the transmission packet, avoiding the loss of the transmission packet when the packet is transmitted using the non-passive transmission path.
  • FIG. 6 is a flowchart of a third embodiment of a data transmission method according to the present application.
  • the data transmission method includes: Step 2101: Receive a path construction request sent by a local communication device, where the path construction request carries There is an identification of the local communication device and the peer communication device.
  • Step 2102 Construct a fast transmission path between the local communication device and the peer communication device according to the path construction request.
  • Step 2103 Send a fast transmission path to the local communication device, so that when the data packet is transmitted between the local communication device and the opposite communication device, the fast transmission path is added to the data packet, and the forwarding plane in the network is enabled. The device forwards according to the fast transmission path carried by the data packet.
  • execution body of the data transmission method provided by steps 2101-2103 in the embodiment of the present application may be a centralized controller.
  • a fast transmission path between the peer communication device and the local communication device is constructed, and when the local communication device transmits the data packet to the opposite communication device, the fast transmission path is added to the data packet, and
  • the forwarding plane device in the network directly forwards the data according to the fast transmission path carried by the data packet, and does not need to forward the data packet to the centralized controller to request forwarding routing, which greatly reduces the forwarding of the data packet.
  • the load of the centralized controller is increased, and the speed at which the forwarding plane device forwards the data packet is increased, and the transmission capability of the network is improved.
  • FIG. 7 is a flowchart of a fourth embodiment of a data transmission method according to the present application.
  • the data transmission method includes: Step 1601: Receive a path construction request sent by a local communication device, where the path construction request carries a The identification of the end communication device and the peer communication device; the local communication device and the peer communication device are both ends of the communication, the identifier of the local communication device is the mark of the local communication device, and the identifier of the opposite communication device is the opposite end The marking of the communication device, and the identification of the local communication device and the peer communication device are unique.
  • the tag can be an ID or an IP address.
  • the path construction request may be an IP packet sent by the local communication device to the peer communication device, where the IP packet contains the identifier of the local communication device and the peer communication device, and the centralized controller passes the IP packet and passes the identifier.
  • the identification of the local communication device and the peer communication device is identified to construct a fast transmission path.
  • Step 1602 According to the path construction request, construct a fast transmission path between the local communication device and the peer communication device, and add a digital signature of the centralized controller to the fast transmission path; the centralized routing table records the devices of each forwarding plane in the network. Routing information, therefore, you can build the local based on the centralized routing table A fast transmission path between the communication device and the peer communication device. It is worth noting that if the local communication device is not in the same domain as the peer communication device, when constructing the fast transmission path, it is based on two centralized controllers of the domain where the local communication device and the peer communication device are located. The centralized routing table is constructed, and when the local communication device and the peer communication device are in the same domain, the centralized routing table of the centralized controller on the domain is directly constructed;
  • a unique digital signature of the centralized controller is added to each newly constructed fast transmission path.
  • the digital signature is a string of digits that only the sender of the information can generate that cannot be forged by others. This digit string is also the sender of the information.
  • a valid proof of the authenticity of the transmitted information, the algorithm of the digital signature of the added centralized controller may be RSA, ELGamal, DSA, and the like.
  • the digital signature technology encrypts the digest information with the sender's private key and transmits it to the recipient along with the original text.
  • the receiver can decrypt the encrypted digest information only with the sender's public key, and then use the hash function to the received original text.
  • a summary information is generated, which is compared with the decrypted summary information.
  • the received information is complete and has not been modified during the transmission. Otherwise, the information has been modified, so the digital signature can verify the integrity of the information.
  • Digital signature is an encryption process
  • digital signature verification is a process of decryption.
  • Step 1603 Send a fast transmission path of the digital signature with the centralized controller to the local communication device and the opposite communication device, so that when the data packet is transmitted between the local communication device and the opposite communication device, and according to centralized control
  • the fast transmission path of the digital signature with the centralized controller is added to the data packet, and the forwarding plane device in the network verifies that the fast transmission path is correct according to the digital signature of the centralized controller. After that, it is forwarded according to the fast transmission path.
  • the transmission path is verified.
  • the fast transmission path of the digital signature with the centralized controller is added to the data packet, and the forwarding plane device in the network is verified according to the digital signature of the centralized controller. After the fast transmission path is correct, it is forwarded according to the fast transmission path.
  • execution body of the data transmission method provided in steps 1601-1603 in the embodiment of the present application may be a centralized controller.
  • a fast transmission path between the peer communication device and the local communication device is constructed, and a digital signature of the centralized controller is added to the fast transmission path to transmit between the opposite communication device and the local communication device.
  • the fast transmission path of the digital signature with the centralized controller is added to the data packet, and the forwarding plane device in the network is controlled according to the centralized
  • the fast transmission path is forwarded according to the fast transmission path.
  • the device does not need to forward the data packet to the centralized controller to forward the route, which greatly reduces the load of the centralized controller and improves the load.
  • the forwarding plane device forwards the speed of the data packet and improves the transmission capability of the network.
  • the digital signature of the centralized controller is added to the fast transmission path, the data is verified after the fast transmission path is verified according to the digital signature of the centralized controller. Packets are forwarded by fast transmission path, thus ensuring fast transmission path Indeed, to ensure the security of communication networks, the network to prevent hackers controlling illegal path.
  • FIG. 8 is a flowchart of a fifth embodiment of a data transmission method according to the present application.
  • the data transmission method includes: Step 2201: Receive a path construction request sent by a local communication device, where the path construction request carries There is an identification of the local communication device and the peer communication device.
  • Step 2202 Construct a fast transmission path between the local communication device and the peer communication device according to the path construction request, and add a digital signature of the centralized controller to the fast transmission path.
  • Step 2203 Send a fast transmission path with the digital signature of the centralized controller to the local communication device, so that when the local communication device transmits a data packet to the opposite communication device, and is verified according to the digital signature After the fast transmission path is correct, the fast transmission path with the digital signature is added to the data packet, and the forwarding plane device in the network verifies that the fast transmission path is correct after verifying according to the digital signature of the centralized controller. And forwarding according to the fast transmission path.
  • execution body of the data transmission method provided by steps 2201-2203 in the embodiment of the present application may be a centralized controller.
  • a fast transmission path between the peer communication device and the local communication device is constructed, and a digital signature of the centralized controller is added to the fast transmission path, so that the local communication device transmits the data packet to the opposite communication device.
  • adding a fast transmission path of the digital signature with the centralized controller to the data packet, and making the forwarding plane device in the network according to the centralized controller After the digital signature verifies that the fast transmission path is correct, according to The fast transmission path is forwarded, and the device does not need to forward the data packet to the centralized controller to request the forwarding route, which greatly reduces the load of the centralized controller, and improves the speed at which the forwarding device forwards the data packet, and improves the network.
  • the data packet is forwarded according to the fast transmission path, thereby ensuring the fast transmission path.
  • the correctness of the system ensures the communication security of the network and prevents the hacker from controlling the network with an illegal path.
  • FIG. 9 is a flowchart of a sixth embodiment of a data transmission method according to the present application.
  • the data transmission method includes: Step 401: Receive a transmission when communication between a local communication device and a peer communication device is received.
  • the data packet wherein the data packet carries a fast transmission path for communication between the local communication device and the opposite communication device; the fast transmission path records a path for transmitting the data packet between the local communication device and the opposite communication device.
  • Step 402 Acquire a next forwarding plane device according to the fast transmission path.
  • the path carried by the fast transmission path has directionality. Therefore, after receiving the data packet and the data packet is extracted to the fast transmission path, the forwarding plane device can locate its position in the fast transmission path and acquire the direction according to the direction of the path. A forwarding plane device.
  • Step 403 Forward the data packet to the next forwarding plane device.
  • the packet is forwarded to the next node, and then the next node acquires the next node again, and forwards the packet to the next node until it is forwarded to the destination. Further, before forwarding the data packet to the next forwarding plane device, the device may determine whether the next forwarding plane device is normal. If the next forwarding plane device is incorrect, request a new fast transmission path from the centralized controller to avoid abnormality. The forwarding plane device sends the data packet, causing the packet to be lost.
  • Figure 10 including:
  • Step 404 Determine whether it is adjacent to the next forwarding plane device, and whether the next forwarding plane device is running normally. If it is adjacent to the next forwarding plane device, and the next forwarding plane device is running normally, go to step 405, otherwise Go to step 406; determine whether the location of the forwarding plane device in the network changes by whether it is adjacent to the next forwarding plane device.
  • Step 405 Forwarding the data packet to the next forwarding plane device; if the device is not adjacent to the next forwarding plane device, the location of the forwarding plane device in the network changes, and the fast transmission path also needs to be updated synchronously.
  • Step 406 Report a data packet to the centralized controller, so that the centralized controller re-pairs the data packet. Routing;
  • the execution body of the data transmission method provided by steps 401-406 in the embodiment of the present application may be a forwarding plane device.
  • a fast transmission path between the peer communication device and the local communication device is constructed, and when the data packet is transmitted between the peer communication device and the local communication device, the fast transmission path is added to the data packet.
  • the forwarding device in the network receives the data packet, it directly forwards the data according to the fast transmission path carried by the data packet.
  • the device in the network forwarding device requests the forwarding packet to the centralized controller.
  • the load of the centralized controller is alleviated, and the speed at which the forwarding plane device forwards the data packet is improved, and the transmission capability of the network is improved.
  • FIG. 11 is a flowchart of a seventh embodiment of a data transmission method according to the present application.
  • the data transmission method includes: Step 1701: Receive transmission when communication between the local communication device and the opposite communication device is received. a data packet, wherein the data packet carries a fast transmission path for communication between the local communication device and the opposite communication device, and the fast transmission path is added with a digital signature of the centralized controller; the fast transmission path records the local communication device and A path for transmitting a data packet between the peer communication devices, and the fast transmission path is added with a digital signature of the centralized controller.
  • Step 1702 Verify the fast transmission path according to the digital signature of the centralized controller.
  • the transmission path carried in the data packet transmitted when the communication between the local communication device and the opposite communication device is performed may be a fake transmission path forged by a hacker or a non-complete transmission path modified by a hacker, Verify the legality and integrity of the transmission path.
  • the digital signature technology encrypts the digest information with the sender's private key and transmits it to the recipient together with the original text.
  • the receiver can decrypt the encrypted digest information only by using the sender's public key, and then use the HASH function to the received original text. Generate a summary information, compared with the decrypted summary information. If the summary information is the same, it indicates that the received information is complete and has not been modified during the transmission. Otherwise, the information has been modified, so that the fast transmission can be verified according to the digital signature.
  • Path integrity
  • the digital signature enables the recipient of the message to confirm the identity of the sender.
  • the recipient cannot be 100% sure of the sender's true identity, but only if the cryptosystem is not deciphered, there is reason to be sure, so the cryptosystem Without being deciphered, the constructor or sender of the fast transmission path can be confirmed or transmitted according to the digital signature, thereby verifying the legitimacy of the fast transmission path; when verifying the fast transmission path according to the digital signature, the integrity and the integrity are For legality, if the fast transmission path is considered to be correct, proceed to the next step. Otherwise, the data packet will not be forwarded.
  • Step 1703 When the fast transmission path is verified to be correct, obtain the next forwarding plane device according to the fast transmission path.
  • the path carried by the fast transmission path has directionality. Therefore, after receiving the data packet and the data packet is extracted to the fast transmission path, the forwarding plane device can locate its position in the fast transmission path and acquire the direction according to the direction of the path. A forwarding plane device.
  • Step 1704 Forward the data packet to the next forwarding plane device.
  • the packet is forwarded to the next node, and then the next node acquires the next node again, and forwards the packet to the next node until it is forwarded to the destination.
  • the execution body of the data transmission method provided by steps 1701-1704 in the embodiment of the present application may be a forwarding plane device.
  • a fast transmission path between the peer communication device and the local communication device is constructed, and a digital signature of the centralized controller is added to the fast transmission path to transmit between the opposite communication device and the local communication device.
  • the fast transmission path of the digital signature with the centralized controller is added to the data packet, and the forwarding plane device in the network is controlled according to the centralized After the digital signature verification of the device is correct, the fast transmission path is forwarded according to the fast transmission path.
  • the device does not need to forward the data packet to the centralized controller to forward the route, which greatly reduces the load of the centralized controller and improves the load.
  • the forwarding plane device forwards the speed of the data packet and improves the transmission capability of the network.
  • the digital signature of the centralized controller is added to the fast transmission path, the data is verified after the fast transmission path is verified according to the digital signature of the centralized controller. Packets are forwarded by fast transmission path, thus ensuring fast transmission path Indeed, to ensure the security of communication networks, the network to prevent hackers controlling illegal path.
  • FIG. 12 is a flowchart of an eighth embodiment of the data transmission method.
  • Step 501 The communication device receives the fast transmission path returned by the centralized controller after constructing a fast transmission path between the communication device and the peer communication device.
  • the communication device may be the source end of the originating path construction request, or may be the opposite end corresponding to the source end.
  • the communication device also sends the path construction request to the centralized controller, and the centralized controller receives the The fast transmission path is constructed according to the centralized routing table, and the fast transmission path is returned to the communication device and the peer communication device; when the communication device is the opposite end, the opposite communication device directly receives the fast transmission path returned by the centralized controller.
  • the path construction request may also Initiated by devices other than the source and peer.
  • the path construction request is an IP packet transmitted between the source end and the opposite end, and the fast transmission path is constructed according to the IP packet transmitted between the source end and the opposite end.
  • Step 502 The communication device adds the fast transmission path to the data packet when sending the data packet to the opposite communication device.
  • the forwarding plane device in the network After the fast transmission path is added to the data packet, the forwarding plane device in the network directly forwards the data according to the fast transmission path carried by the data packet when the data packet is received. Both requests forwarding routes to the centralized controller, which greatly reduces the load on the centralized controller.
  • Step 503 The communication device sends the data packet carrying the fast transmission path to the peer communication device, where the forwarding plane device in the network forwards according to the fast transmission path carried by the data packet;
  • the communication device selects the first forwarding plane device according to the fast transmission path, and determines that the first forwarding plane device is an access device or a virtual access device, and sends the data packet carrying the fast transmission path to the first a forwarding plane device, so that the first forwarding plane device forwards the data packet according to a fast transmission path carried by the data packet, and other forwarding plane devices in the network are carried according to the data packet
  • the fast transmission path is forwarded until the data packet is forwarded to the peer communication device, and the forwarding plane device in the network may be one or more.
  • the forwarding plane device in the network When receiving the data packet, the forwarding plane device in the network directly performs fast forwarding according to the fast transmission path carried by the data packet.
  • the device in the network forwarding plane requests the forwarding controller to forward the route when forwarding the data packet.
  • the forwarding plane device forwards the speed of the data packet and improves the transmission capacity of the network. It is worth noting that the turning device in the network refers to the turning device between the peer communication device and the communication device.
  • the execution body of the data transmission method provided by steps 501-503 in the manner of the embodiments of the present application may be a communication device.
  • the communication device sends the path request to the centralized controller, and the centralized controller constructs a fast transmission path, and then sends the data to the communication device, so that the communication device does not need to concentrate when transmitting the data packet containing the fast transmission path.
  • the controller then calculates the search path and directly forwards the data according to the fast transmission path carried by the data packet.
  • the device does not need to forward the data packet to the centralized controller to request the forwarding route, which greatly reduces the load of the centralized controller. And improve the forwarding plane device to forward the data packet speed, improve the transmission capacity of the network.
  • FIG. 13 is a flowchart of a ninth embodiment of the data transmission method, where the data transmission method includes: Step 1801: The communication device receives the centralized controller to construct the communication device and the peer end After the fast transmission path between the fast transmission paths returned, wherein the fast transmission path is added with the digital signature of the centralized controller;
  • the communication device may be the source end of the originating path construction request, or may be the opposite end corresponding to the source end.
  • the communication device also sends the path construction request to the centralized controller, and the centralized controller receives the The fast transmission path is constructed according to the centralized routing table, and the fast transmission path is returned to the communication device and the peer communication device; when the communication device is the opposite end, the opposite communication device directly receives the fast transmission path returned by the centralized controller.
  • the path construction request may also be initiated by other devices than the source and the peer.
  • the path construction request is an IP packet transmitted between the source end and the opposite end, and the fast transmission path is constructed according to the IP packet transmitted between the source end and the opposite end, wherein the fast transmission path is added with the number of the centralized controller. signature.
  • Step 1802 Verify the fast transmission path according to the digital signature of the centralized controller; because the transmission path received by the communication device may be a hacker forged transmission path or a non-complete transmission path modified by a hacker, Therefore, the legality and integrity of the transmission path are verified.
  • This verification method is consistent with the content of step 1702 in the seventh embodiment of the present data transmission method, and will not be further described.
  • Step 1803 When the fast transmission path is verified to be correct, and the communication device needs to add a fast transmission path of the digital signature with the centralized controller to the data packet when transmitting the data packet to the opposite communication device;
  • the fast transmission path of the digital signature with the centralized controller When the fast transmission path of the digital signature with the centralized controller is added to the data packet, when the fast transmission path is verified to be correct, and the forwarding plane device in the network receives the data packet, it is directly based on the fast carried by the data packet.
  • the transmission path performs fast forwarding, and the device in the network does not need to request the forwarding route to the centralized controller when forwarding the data packet, thereby greatly reducing the load of the centralized controller.
  • Step 1804 Send the data packet carrying the fast transmission path to the peer communication device, after the forwarding plane device in the network receives the data packet, and after verifying that the fast transmission path is correct according to the digital signature of the centralized controller, Forwarding according to the fast transmission path carried by the data packet;
  • the communication device selects the first forwarding plane device according to the fast transmission path, and determines that the first forwarding plane device is an access device or a virtual access device, and sends the data packet carrying the fast transmission path to the first a forwarding plane device, after the first forwarding plane device receives the data packet, and after verifying that the fast transmission path is correct according to the digital signature of the centralized controller, according to the fast transmission path carried by the data packet Forward the data packet, and other forwarding device devices in the network also After receiving the data packet and verifying that the fast transmission path is correct according to the digital signature of the centralized controller, the data packet is forwarded according to the fast transmission path carried by the data packet until the data packet is forwarded to the opposite communication device.
  • the forwarding plane devices in the network may be one or more.
  • the forwarding plane device in the network When the forwarding plane device in the network receives the data packet, and when the fast transmission path is verified to be correct, it directly forwards according to the fast transmission path carried by the data packet, without the intra-network forwarding plane device forwarding the data packet. All requests a forwarding route from the centralized controller to improve the speed at which the forwarding device forwards the data packet and improves the transmission capability of the network. It is worth noting that the turning device in the network refers to the turning device between the peer communication device and the communication device.
  • the execution body of the data transmission method provided by steps 1801-1804 in the embodiment of the present application may be a communication device.
  • the communication device sends the path request to the centralized controller, and the centralized controller constructs a fast transmission path, adds a digital signature of the centralized controller to the fast transmission path, and then carries a fast transmission path carrying the digital signature.
  • Sending to the communication device so that when the communication device sends the data packet containing the fast transmission path, it is no longer necessary to recalculate the search path through the centralized controller, and directly forwards according to the fast transmission path carried by the data packet, without the need for the intra-network forwarding device.
  • Forwarding the data packet requests the centralized controller to forward the route, which greatly reduces the load of the centralized controller, improves the speed at which the forwarding plane device forwards the data packet, improves the transmission capability of the network, and at the same time, adds concentration to the fast transmission path.
  • the digital signature of the controller after verifying that the fast transmission path is correct according to the digital signature of the centralized controller, forwards the data packet according to the fast transmission path, thereby ensuring the correctness of the fast transmission path, ensuring communication security of the network, and preventing The hacker used the illegal path to the network System.
  • FIG. 14 is a schematic diagram of a first embodiment of a centralized controller of the present application.
  • the centralized controller 700 includes a first receiving module 701 , a building module 702 , and a sending module 703 .
  • the first receiving module 701 is configured to receive a path construction request sent by the local communication device, where the path construction request carries an identifier of the local communication device and the peer communication device.
  • the building module 702 is configured to construct a fast transmission path between the local communication device and the peer communication device according to the path construction request.
  • the sending module 703 is configured to send a fast transmission path to the local communication device and the opposite communication device, so that the data packet is transmitted between the local communication device and the opposite communication device, and the fast transmission path is added to the data packet.
  • the forwarding plane device in the network is forwarded according to the fast transmission path carried by the data packet.
  • the sending module 703 includes a first adding unit 7031, a first sending unit 7032, a receiving unit 7033, a second adding unit 7034, and a second sending unit 7035.
  • First adding unit 7031 used The first transmission path is added to the path construction request.
  • the first sending unit 7032 is configured to forward, to the peer communication device, a path construction request that carries the first transmission path.
  • the receiving unit 7033 is configured to receive a response message that the peer communication device agrees to establish a fast transmission path, where the first communication path is sent when the peer communication device sends the first transmission packet to the local communication device And being added to the first transport packet, so that the forwarding plane device that receives the first transport packet in the network forwards according to the first transport path carried by the first transport packet.
  • the second adding unit 7034 is configured to add the second transmission path to the response message.
  • the second sending unit 7035 is configured to forward the response message carrying the second transmission path to the local communication device, so that when the local communication device sends the second transmission packet to the opposite communication device, The second transmission path is added to the second transmission packet, and the switching device that receives the second transmission packet in the network is forwarded according to the second transmission path carried by the second transmission packet.
  • FIG. 15 is a schematic diagram of a second embodiment of a centralized controller according to the present application.
  • the centralized controller 700 further includes: a second receiving module 710, a determining module 711, a first update sending module 712, and a second update.
  • Send module 713 The second receiving module 710 is configured to receive an abnormality packet of the forwarding plane device in the network, where the abnormal packet carries an identifier of the forwarding plane device with an abnormality.
  • the determining module 711 is configured to determine whether the first transmission path and the second transmission path include a forwarding plane device with an abnormality.
  • the first update sending module 712 is configured to: when the determining module determines that the first transmission path includes a forwarding plane device with an abnormality, update the first transmission path, and send the updated first to the peer communication device A transmission path.
  • the second update sending module 713 is configured to: when the determining module determines that the second transmission path includes the forwarding plane device with an abnormality, update the second transmission path, and send the updated first to the local communication device Two transmission paths.
  • FIG. 16 is a schematic diagram of a third embodiment of a centralized controller according to the present application.
  • the centralized controller 700 includes a first receiving module 701, a building module 702, and a sending module 703.
  • the first receiving module 701 is configured to receive a path construction request sent by the local communication device, where the path construction request carries an identifier of the local communication device and the peer communication device.
  • the building module 702 is configured to construct a fast transmission path between the local communication device and the peer communication device according to the path construction request.
  • the sending module 703 is configured to send a fast transmission path to the local communication device, so that when the local communication device transmits the data packet to the opposite communication device, the fast transmission path is added to the data packet, and the forwarding in the network is performed. The device is forwarded according to the fast transmission path carried by the data packet.
  • FIG. 17 is a schematic diagram of a fourth embodiment of a centralized controller according to the present application.
  • the controller 700 includes: a first receiving module 701, a building module 702, and a sending module 703.
  • the first receiving module 701 is configured to receive a path construction request sent by the local communication device, where the path construction request carries an identifier of the local communication device and the peer communication device.
  • the building module 702 is configured to construct a fast transmission path between the local communication device and the peer communication device according to the path construction request, and add a digital signature of the centralized controller to the fast transmission path.
  • the sending module 703 is configured to send a fast transmission path to the local communication device and the opposite communication device, so that when the data packet is transmitted between the local communication device and the opposite communication device, and the digital signature verification according to the centralized controller is fast After the transmission path is correct, the fast transmission path of the digital signature with the centralized controller is added to the data packet, and the forwarding plane device in the network verifies that the fast transmission path is correct according to the digital signature of the centralized controller, and is carried according to the data packet. The fast transmission path is forwarded.
  • FIG. 18 is a schematic diagram of a fifth embodiment of a centralized controller according to the present application.
  • the centralized controller 700 includes a first receiving module 701, a building module 702, and a sending module 703.
  • the first receiving module 700 is configured to receive a path construction request sent by the local communication device, where the path construction request carries an identifier of the local communication device and the peer communication device.
  • the building module 701 is configured to construct a fast transmission path between the local communication device and the peer communication device according to the path construction request, and add a digital signature of the centralized controller to the fast transmission path.
  • the sending module 703 is configured to send a fast transmission path with a digital signature to the local communication device, so that when the local communication device transmits the data packet to the opposite communication device, and the verification is performed according to the digital signature of the centralized controller After the fast transmission path is correct, the fast transmission path of the digital signature with the centralized controller is added to the data packet, and the forwarding plane device in the network verifies that the fast transmission path is correct according to the digital signature of the centralized controller. Then, forwarding is performed according to the fast transmission path carried by the data packet.
  • FIG. 19 is a schematic diagram of a sixth embodiment of a centralized controller for performing the data transmission method of the present application.
  • the centralized controller device 900 includes a processor 901, a memory 903, a communication adapter 902, and a bus.
  • the processor 901, the memory 903, the communication adapter 902, and the bus are connected.
  • a bus connection is taken as an example.
  • the memory 903 is used as a non-volatile computer readable storage medium, and can be used for storing non-volatile software programs, non-volatile computer-executable programs, and modules, as in the processing method of data transmission in the embodiment of the present application.
  • Program instructions/modules first receiving module 701, building module 702, transmitting module 703, second receiving module 710, determining module 711, first update transmitting module 712, and second update transmitting module 713).
  • the processor 901 runs the non-volatile software stored in the memory 903 Programs, instructions, and modules to perform various functional applications of the server and data processing, that is, processing methods for implementing data transmission of the above method embodiments.
  • the memory 903 may include a storage program area and an storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may store data created by use of the processing device operated according to the list item, and the like.
  • the memory 903 may include a high speed random access memory, and may also include a nonvolatile memory such as at least one magnetic disk storage device, a flash memory device, or other nonvolatile solid state storage device.
  • the memory 903 can optionally include a memory remotely located relative to the processor 901 that can be connected to the processing device of the list item operation over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • the one or more modules are stored in the memory 903, and when executed by the one or more processors 901, perform a processing method of data transmission in any of the above method embodiments.
  • the peer communication device and the local communication device save and record the transmission path, so that the data transmission does not need to be concentrated.
  • the controller performs route calculation and directly forwards to the destination through the forwarding plane device, which is beneficial to the real-time performance of data transmission.
  • FIG. 20 is a schematic diagram of a first embodiment of a forwarding plane device according to the present application.
  • the forwarding plane device 1000 includes a receiving module 1001, an obtaining module 1002, and a forwarding module 1003.
  • the receiving module 1001 is configured to receive a data packet transmitted when the communication between the local communication device and the opposite communication device is performed, where the data packet carries a fast communication between the local communication device and the opposite communication device. Transmission path.
  • the obtaining module 1002 is configured to acquire the next forwarding plane device according to the fast transmission path.
  • the forwarding module 1003 is configured to forward the data packet to the next forwarding plane device.
  • the forwarding module includes: a determining unit 10031, a forwarding unit 10032, and a reporting unit 10033.
  • the determining unit 10031 is configured to determine whether it is adjacent to the next forwarding plane device, and whether the next forwarding plane device is operating normally.
  • the forwarding unit 10032 is configured to: when the determining module determines that it is adjacent to the next forwarding plane device, and the next forwarding plane device operates normally, forward the data packet to the next forwarding plane device.
  • the reporting unit 10033 is configured to report the data packet to the centralized controller, so that the centralized controller re-routes the data packet.
  • FIG. 21 is a schematic diagram of a second embodiment of a forwarding plane device of the present application.
  • the forwarding plane device 1000 includes a receiving module 1001, a verification module 1004, an obtaining module 1002, and a forwarding module 1003.
  • the receiving module 1001 is configured to receive a communication between the local communication device and the opposite communication device.
  • the data packet transmitted during the message, wherein the data packet carries a fast transmission path for communication between the local communication device and the peer communication device, and the fast transmission path is added with a digital signature of the centralized controller.
  • the verification module 1004 verifies the fast transmission path according to the digital signature of the centralized controller.
  • the obtaining module 1002 is configured to acquire the next forwarding plane device according to the fast transmission path when the fast transmission path is verified to be correct.
  • the forwarding module 1003 is configured to forward the data packet to the next forwarding plane device.
  • FIG. 22 is a schematic diagram of a third embodiment of a forwarding plane device for performing the data transmission method of the present application.
  • the forwarding plane device 2000 includes a processor 2001, a memory 2003, a communication adapter 2002, and a bus.
  • the processor 2001, the memory 2003, the communication adapter 2002, and the bus connection are taken as an example.
  • the memory 2003 is a non-volatile computer readable storage medium, and can be used for storing a non-volatile software program, a non-volatile computer executable program, and a module, as in the processing method of data transmission in the embodiment of the present application.
  • Program instructions/modules (receiving module 1001, obtaining module 1002, forwarding module 1003, and verification module 1004).
  • the processor 2001 executes various functional applications of the server and data processing by executing non-volatile software programs, instructions, and modules stored in the memory 2003, that is, processing methods for implementing data transmission of the above-described method embodiments.
  • the memory 2003 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may store data created by use of the processing device operated according to the list item, and the like. .
  • memory 2003 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.
  • the memory 2003 can optionally include memory remotely located relative to the processor 2001 that can be connected to the processing device of the data transfer over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • the one or more modules are stored in the memory 2003, and when executed by the one or more processors 2001, perform a processing method of data transfer in any of the above method embodiments.
  • the data transmission does not need to be calculated by the centralized controller, and is directly forwarded by the forwarding device.
  • the destination can be reached. If the fast transmission path is abnormal, the packet with the abnormal path will be quickly identified and then sent to the centralized controller for new route calculation, and then the forwarding device will correctly send it to the Destination, this will ensure that data loss will not occur.
  • FIG. 23 is a schematic diagram of a first embodiment of a communication device.
  • the communication device 3000 includes a receiving module 3001, an adding module 3002, and a sending module 3003.
  • the receiving module 3001 is configured to receive the fast transmission path returned by the centralized controller after constructing a fast transmission path between the communication device and the peer communication device.
  • the adding module 3002 is configured to add the fast transmission path to the data packet when sending the data packet to the peer communication device.
  • the sending module 3003 sends the data packet carrying the fast transmission path to the peer communication device, where the forwarding plane device in the network forwards according to the fast transmission path carried by the data packet.
  • the sending module 3003 further includes: a selected unit (not shown) and a forwarding unit (not shown).
  • a forwarding unit (not shown), configured to send the data packet carrying the fast transmission path to the first forwarding plane device, so that the first forwarding plane device is configured according to the data packet
  • the carried fast transmission path forwards the data packet, and other forwarding plane devices in the network will forward according to the fast transmission path carried by the data packet.
  • the communication device sends the path request to the centralized controller, and the centralized controller constructs a fast transmission path, and then sends the data to the communication device, so that the communication device does not need to pass centralized control when transmitting the data packet containing the fast transmission path.
  • the device recalculates the search path and directly forwards the data according to the fast transmission path carried by the data packet.
  • the device does not need to forward the data packet to the centralized controller to forward the route, which greatly reduces the load of the centralized controller. Improve the speed at which the forwarding device forwards the packet and improve the transmission capacity of the network.
  • FIG. 24 is a schematic diagram of a second embodiment of a communication device.
  • the communication device 3000 includes a receiving module 3001, a verification module 3004, an adding module 3002, and a sending module 3003.
  • the receiving module 3001 is configured to receive the fast transmission path returned by the centralized controller after constructing a fast transmission path between the communication device and the peer communication device, where the fast transmission path is added with a centralized controller digital signature.
  • the verification module 3004 is configured to verify the fast transmission path according to the digital signature of the centralized controller.
  • the adding module 3002 is configured to add a fast transmission path of the digital signature with the centralized controller to the data packet when the fast transmission path is verified to be correct, and when the communication device needs to transmit the data packet to the opposite communication device.
  • the sending module 3003 is configured to send, to the peer communication device, the data packet carrying the fast transmission path, where the forwarding plane device in the network receives the data packet, and verifies that the fast transmission path is correct according to the digital signature of the centralized controller. After that, it is forwarded according to the fast transmission path.
  • the sending module 3003 further includes: a selected unit (not shown) and forwarding Unit (not shown).
  • a forwarding unit (not shown), configured to send the data packet carrying the fast transmission path to the first forwarding plane device, so that the first forwarding plane device after receiving the data packet After verifying that the fast transmission path is correct according to the digital signature of the centralized controller, forwarding the data packet according to the fast transmission path carried by the data packet, and other forwarding plane devices in the network will also After receiving the data packet and verifying that the fast transmission path is correct according to the digital signature of the centralized controller, the data packet is forwarded according to the fast transmission path carried by the data packet.
  • FIG. 25 is a schematic diagram of a third embodiment of a communication apparatus for performing the data transmission method of the present application.
  • the communication device 4000 includes a processor 4001, a memory 4003, a communication adapter 4002, and a bus.
  • the processor 4001, the memory 4003, the communication adapter 4002, and the bus are connected.
  • a bus connection is taken as an example.
  • the memory 4003 is a non-volatile computer readable storage medium, and can be used for storing a non-volatile software program, a non-volatile computer executable program, and a module, as in the processing method of data transmission in the embodiment of the present application.
  • Program instructions/modules (receiving module 3001, adding module 3002, transmitting module 3003, and verifying module 3004).
  • the processor 4001 executes various functional applications and data processing of the server by executing non-volatile software programs, instructions, and modules stored in the memory 4003, that is, a processing method for implementing data transmission of the above-described method embodiments.
  • the memory 4003 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may store data created according to usage of the communication device, and the like. Further, the memory 4003 may include a high speed random access memory, and may also include a nonvolatile memory such as at least one magnetic disk storage device, flash memory device, or other nonvolatile solid state storage device. In some implementations, the memory 4003 can optionally include memory remotely located relative to the processor 4001 that can be connected to the processing device of the data transfer over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • the data transmission does not need to be routed through the centralized controller, and can be directly forwarded through the forwarding device.
  • the destination arrives, if the fast transmission path is abnormal, it will quickly identify and then send the packet containing the abnormal path to the centralized controller for new route calculation, and then the forwarding device will correctly send it to the destination. , this will ensure that no data will occur The phenomenon of packet loss.
  • the one or more modules are stored in the memory 4003, and when executed by the one or more processors 4001, perform a processing method of data transfer in any of the above method embodiments.

Landscapes

  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

Un mode de réalisation de l'invention concerne un procédé de transmission de données, un appareil de plan de transmission, et un contrôleur centralisé. Le procédé consiste à : recevoir une demande d'établissement de trajet envoyée par un dispositif de communication d'extrémité locale, la demande d'établissement de trajet contenant des identificateurs du dispositif de communication d'extrémité locale et d'un dispositif de communication d'extrémité homologue ; sur la base de la demande d'établissement de trajet, établir un trajet de transmission rapide entre le dispositif de communication d'extrémité locale et le dispositif de communication d'extrémité homologue ; et envoyer le trajet de transmission rapide au dispositif de communication d'extrémité locale et au dispositif de communication d'extrémité homologue, de sorte que des paquets de données soient transmis entre le dispositif de communication d'extrémité locale et le dispositif de communication d'extrémité homologue au moyen du trajet de transmission rapide. Dans le procédé de l'invention, un trajet de transmission rapide est établi entre le dispositif de communication d'extrémité locale et le dispositif de communication d'extrémité homologue, de sorte que les données peuvent être transmises directement et rapidement à une destination par un appareil de plan de transmission sans qu'un contrôleur centralisé doive exécuter un calcul d'itinéraire.
PCT/CN2017/090620 2016-08-04 2017-06-28 Procédé de transmission de données, contrôleur centralisé, appareil de plan de transmission, et dispositif de communication WO2018024053A1 (fr)

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CN201780000597.1A CN107690783B (zh) 2016-08-04 2017-06-28 一种数据传输方法、集中控制器、转发面设备和通信装置
US16/262,003 US20190166042A1 (en) 2016-08-04 2019-01-30 Method for data transmitting, centralized controller, forwarding plane device and communication apparatus

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CN201610641072.3 2016-08-04
CN201610641072 2016-08-04
CN201610805051.0A CN106254242A (zh) 2016-08-04 2016-09-05 一种数据传输方法、集中控制器、转发面设备和本端通信装置
CN201610805051.0 2016-09-05
PCT/CN2016/101155 WO2018040220A1 (fr) 2016-08-04 2016-09-30 Procédé de transmission de données, contrôleur centralisé, dispositif de plan de transfert et dispositif de communication
CNPCT/CN2016/101155 2016-09-30
CNPCT/CN2017/081924 2017-04-25
PCT/CN2017/081924 WO2018024001A1 (fr) 2016-08-04 2017-04-25 Procédé de transmission de données, contrôleur centralisé, appareil de plan de transfert et dispositif de communication

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070248047A1 (en) * 2006-01-31 2007-10-25 Peter Shorty Home electrical device control within a wireless mesh network
CN103067281A (zh) * 2012-12-28 2013-04-24 深圳市磊科实业有限公司 一种路由器快速转发方法及实施该方法的系统
US20130290571A1 (en) * 2012-04-25 2013-10-31 Lsi Corporation Methods and structure for determining mapping information inconsistencies in i/o requests generated for fast path circuits of a storage controller
CN105743790A (zh) * 2014-12-08 2016-07-06 中兴通讯股份有限公司 一种sdn网络中流量转发的管理方法及装置
CN105791169A (zh) * 2014-12-16 2016-07-20 电信科学技术研究院 软件定义网络中交换机转发控制、转发方法及相关设备
CN106254238A (zh) * 2016-09-29 2016-12-21 胡汉强 一种数据传输方法、集中控制器和通信装置
CN106254242A (zh) * 2016-08-04 2016-12-21 胡汉强 一种数据传输方法、集中控制器、转发面设备和本端通信装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070248047A1 (en) * 2006-01-31 2007-10-25 Peter Shorty Home electrical device control within a wireless mesh network
US20130290571A1 (en) * 2012-04-25 2013-10-31 Lsi Corporation Methods and structure for determining mapping information inconsistencies in i/o requests generated for fast path circuits of a storage controller
CN103067281A (zh) * 2012-12-28 2013-04-24 深圳市磊科实业有限公司 一种路由器快速转发方法及实施该方法的系统
CN105743790A (zh) * 2014-12-08 2016-07-06 中兴通讯股份有限公司 一种sdn网络中流量转发的管理方法及装置
CN105791169A (zh) * 2014-12-16 2016-07-20 电信科学技术研究院 软件定义网络中交换机转发控制、转发方法及相关设备
CN106254242A (zh) * 2016-08-04 2016-12-21 胡汉强 一种数据传输方法、集中控制器、转发面设备和本端通信装置
CN106254238A (zh) * 2016-09-29 2016-12-21 胡汉强 一种数据传输方法、集中控制器和通信装置

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