WO2015157947A1

WO2015157947A1 - Software defined network based networking method and device

Info

Publication number: WO2015157947A1
Application number: PCT/CN2014/075524
Authority: WO
Inventors: 王蛟
Original assignee: 华为技术有限公司
Priority date: 2014-04-16
Filing date: 2014-04-16
Publication date: 2015-10-22
Also published as: CN105264839A; CN105264839B

Abstract

Provided in the present invention are a software defined network (SDN) based networking method and device. The method comprises: a network scheduling device generates an identifier pair for networking by a source controller and a network forwarding device; the network scheduling device transmits a first identifier in the identifier pair to the source controller and transmits a second identifier in the identifier pair to the network forwarding device, the first identifier and the second identifier being in a matching relationship so that the source controller and the network forwarding device establish a network according to the matching relationship between the first identifier and the second identifier. The present invention realizes SDN based automatic networking.

Description

Networking method and device based on software defined network

Technical field

The embodiments of the present invention relate to communication technologies, and in particular, to a networking method and device based on a software-defined network. Background technique

Software Defined Network (SDN) is a new type of network architecture. Its core technology is to separate the network forwarding layer from the network control layer, thus achieving flexible control of network traffic and providing innovation for core networks and applications. A good platform.

The network control layer in the SDN is extracted by the control functions in the network forwarding devices such as the original switch and router, and is implemented by an independent controller. The controller is the core component of SDN. The controller exists in the form of a software platform and enjoys centralized control. Its algorithms, logic and rules are configurable. After receiving the command from the controller, the network forwarding device updates the local rules and completes the data forwarding.

Currently, in the networking connection between the controller and the network forwarding device, the controller address is manually configured to the network forwarding device, and the network forwarding device sends a connection request to the controller specified by the address, after being negotiated with the controller. , establish the connection relationship of the control plane. The networking mode of the prior art is implemented based on the manual mode, and the automatic networking based on the software-defined network cannot be realized. In the case of a large network size, not only is the implementation complicated, but also a large amount of labor is consumed. Summary of the invention

The embodiment of the invention provides a networking method and device based on a software-defined network, and implements an automatic networking based on a software-defined network.

In a first aspect, an embodiment of the present invention provides a networking method based on a software-defined network, including:

The network scheduling device generates an identifier pair for the source controller and the network forwarding device to perform networking;

The network scheduling device transmits the first identifier in the identifier pair to the source controller, Sending the second identifier of the identifier pair to the network forwarding device, the first identifier and the second identifier have a matching relationship, so that the source controller and the network forwarding device are The matching relationship between the first identifier and the second identifier is performed on the network.

In conjunction with the first aspect, in a first possible implementation manner of the first aspect, the network scheduling device sends a first identifier of the identifier pair to a source controller, where the identifier is aligned After the second identifier is sent to the network forwarding device, the method further includes:

The network scheduling device receives the release control right request information sent by the source controller; wherein, after the source controller and the network forwarding device are successfully networked, the source controller has control on the network forwarding device Right

The network scheduling device selects a target controller and the network forwarding device to perform networking in the registered controller according to the state information of the software-defined network;

Transmitting, by the network scheduling device, the first identifier to the target controller, so that the target controller and the network forwarding device perform a matching relationship according to the first identifier and the second identifier Networking

The network scheduling device receives a networking success notification message sent by the target controller, and sends release control right response information to the source controller.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the network scheduling device generates a network forwarding device and a source controller for networking Before the identifier pair, it also includes:

The network scheduling device receives identifier request information sent by the network forwarding device, where the identifier request information includes an identifier of the network forwarding device;

Determining, by the network scheduling device, that the network forwarding device passes the authentication according to the identifier of the network forwarding device and the legal network forwarding device identifier list;

The network scheduling device selects, according to the state information of the software-defined network, the source controller and the network forwarding device to perform networking in the registered controller.

In conjunction with the second possible implementation of the first aspect, in a third possible implementation manner of the first aspect, before the network scheduling device receives the identifier request information sent by the network forwarding device, the method further includes:

The network scheduling device obtains the legal network forwarding device identifier list, where the legal network forwarding device identifier list is used to authenticate the network forwarding device; Receiving, by the network scheduling device, a registration request sent by the source controller, and sending a registration success response to the source controller;

The network scheduling device receives a registration request sent by the target controller, and sends a registration success response to the target controller.

With reference to the first aspect, the first to the third possible implementation manners of the first aspect, in a fourth possible implementation manner of the first aspect, the network scheduling device generates a source controller and The network forwarding device performs the identifier pair of the networking, including any of the following:

Generating, by the network scheduling device, the identifier pair according to a preset matching rule;

The network scheduling device generates the identifier pair according to a preset encryption algorithm.

With reference to the first aspect, the first to fourth possible implementation manners of the first aspect, in a fifth possible implementation manner of the first aspect, the network scheduling device The first identifier is sent to the source controller, and before the second identifier in the identifier pair is sent to the network forwarding device, the method further includes:

The network scheduling device generates a connection address of the network forwarding device, where the connection address belongs to the same network segment as the default address of the source controller;

The network scheduling device sends the second identifier in the identifier pair to the network forwarding device, including:

The network scheduling device transmits a connection address of the network forwarding device and a second identifier in the identifier pair to a network forwarding device.

With reference to the fifth possible implementation of the first aspect, in a sixth possible implementation manner of the first aspect, the method further includes:

Receiving, by the network forwarding device, the second identifier sent by the network scheduling device, broadcasting, by the control plane of the software-defined network, the first network forwarding device matching information, where the first network forwarding device matching information includes the second identifier The identifier and the address information of the network forwarding device, after receiving the source controller, after determining that the first identifier and the second identifier satisfy the matching relationship, sending, according to the address information of the network forwarding device The first source controller matching information, the first source controller matching information includes the first identifier and address information of the source controller, and determining the first identifier sent by the source controller The second identifier satisfies the matching relationship, and establishes a connection with the source controller according to the address information of the source controller; or Receiving, by the source controller, the first identifier sent by the network scheduling device, and broadcasting, by the control plane of the software-defined network, second source controller matching information, where the second source controller matching information includes the first The identifier and the address information of the source control are sent by the network forwarding device according to the address information of the source controller after determining that the first identifier and the second identifier satisfy the matching relationship The second network forwarding device matching information, where the second network forwarding device matching information includes the second identifier and address information of the network forwarding device, and determining the second identifier sent by the network forwarding device The first identifier satisfies the matching relationship, and establishes a connection with the network forwarding device according to the address information of the network forwarding device.

In a second aspect, an embodiment of the present invention provides a networking method based on a software-defined network, including:

The network forwarding device receives a second identifier in the identifier pair sent by the network scheduling device; the identifier pair includes a first identifier and the second identifier, and the first identifier is the network scheduling device An identifier sent by the source controller, the first identifier and the second identifier having a matching relationship;

The network forwarding device broadcasts, by the control plane of the software-defined network, the first network forwarding device matching information, where the first network forwarding device matching information includes the second identifier and address information of the network forwarding device;

Receiving, by the network forwarding device, the first source controller that is sent according to the address information of the network forwarding device after the source controller determines that the first identifier and the second identifier satisfy the matching relationship Information, the first source controller matching information includes the first identifier and address information of the source controller;

Determining, by the network forwarding device, that the first identifier and the second identifier sent by the source controller meet the matching relationship, and establishing, with the source controller, the source controller connection.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the method further includes: the network forwarding device receiving, by the source controller, a second source controller that is broadcasted by a control plane of the software-defined network Information, the second source controller matching information includes the first identifier and address information of the source controller;

The network forwarding device determines that the first identifier and the second identifier satisfy the a matching relationship, the second network forwarding device matching information is sent to the source controller according to the address information of the source controller, where the second network forwarding device matching information includes the second identifier and the network forwarding device The address information, so that the source controller establishes a connection with the network forwarding device according to the matching relationship between the first identifier and the second identifier and the address information of the network forwarding device.

With the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the network forwarding device receives the second identifier in the identifier pair sent by the network scheduling device Before the character, it also includes:

The network forwarding device sends identifier request information to the network scheduling device, where the identifier request information includes an identifier of the network forwarding device, so that the network scheduling device authenticates the network forwarding device.

With reference to the second aspect, the first aspect of the second aspect, and the second possible implementation manner, in a third possible implementation manner of the first aspect, the source controller is configured according to the source controller The working state triggers a control right handover to the network forwarding device, the source controller sends a release control right request message to the network scheduling device, and the network scheduling device sends the first identifier to the target controller After the network forwarding device establishes a connection with the source controller, the method further includes:

Receiving, by the network forwarding device, first target controller matching information that is broadcast by the target controller on a control plane of the software-defined network, where the first target controller matching information includes the first identifier and the target Address information of the controller;

Determining, by the network forwarding device, that the first identifier and the second identifier broadcast by the target controller satisfy the matching relationship;

Transmitting, by the network forwarding device, third network forwarding device matching information to the target controller according to the address information of the target controller, where the third network forwarding device matching information includes the second identifier and the network Forwarding the address information of the device, so that the target controller establishes a connection with the network forwarding device according to the matching relationship between the first identifier and the second identifier and the address information of the network forwarding device.

With reference to the third possible implementation of the second aspect, in a fourth possible implementation manner of the second aspect, the address information of the target controller includes a default address of the target controller; The address information of the source controller includes a default address of the source controller; the address information of the network forwarding device includes a default address of the network forwarding device or a connection allocated by the network scheduling device to the network forwarding device. An address, where the connection address belongs to the same network segment as the default address of the source controller.

In a third aspect, an embodiment of the present invention provides a networking method based on a software-defined network, including:

The source controller receives the first identifier in the pair of identifiers sent by the network scheduling device; the identifier pair includes the first identifier and the second identifier, and the second identifier is the network scheduling device An identifier sent by the network forwarding device, where the first identifier and the second identifier have a matching relationship;

The source controller broadcasts second source controller matching information on a control plane of the software defined network, the second source controller matching information including the first identifier and the source controlled address

I Ή自, .,

The source controller receives, by the network forwarding device, a second network forwarding device that is sent according to the address information of the source controller after determining that the first identifier and the second identifier satisfy the matching relationship. Information, the second network forwarding device matching information includes the second identifier and address information of the network forwarding device;

Determining, by the source controller, that the second identifier sent by the network forwarding device and the first identifier meet the matching relationship, and establishing, according to the address information of the network forwarding device, the network forwarding device connection.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the method further includes: the source controller receiving, by the network forwarding device, a first network forwarding device that is broadcasted by a control plane of the software-defined network Information, the first network forwarding device matching information includes a second identifier and address information of the network forwarding device;

The source controller determines that the first identifier and the second identifier satisfy the matching relationship;

The source controller sends first source controller matching information to the network forwarding device according to address information of the network forwarding device, where the first source controller matching information includes the first identifier and the source Address information of the controller, so that the network forwarding device establishes and matches the matching relationship between the first identifier and the second identifier and the address information of the source control The connection of the source controller.

With the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, after the source controller establishes a connection with the network forwarding device, the method further includes:

The source controller triggers a control right switchover of the network forwarding device according to an operating state of the source controller;

Sending, by the source controller, a release control right request message to the network scheduling device, to enable the network scheduling device to send the first identifier to a target controller;

And the source controller receives the release control right response information sent by the network scheduling device after the target controller establishes a connection with the network forwarding device.

With the third aspect or the first possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, after the source controller establishes a connection with the network forwarding device, the method further includes:

The source controller determines a target controller, and sends the first identifier to the target controller, so that the target controller establishes a match according to a matching relationship between the first identifier and the second identifier The connection of the network forwarding device;

The source controller receives a notification message that the target controller sent by the target controller successfully establishes a connection with the network forwarding device;

The source controller releases control of the network forwarding device.

With reference to the second or third possible implementation of the third aspect, in a fourth possible implementation manner of the third aspect, the address information of the target controller includes a default address of the target controller;

The address information of the source controller includes a default address of the source controller;

The address information of the network forwarding device includes a default address of the network forwarding device or a connection address allocated by the network scheduling device to the network forwarding device, where the connection address belongs to the same network as the default address of the source controller. segment.

In a fourth aspect, the present invention provides a networking method based on a software-defined network, including: the target controller receives the first identifier pair sent by the network scheduling device or the source controller. An identifier, the identifier pair includes a first identifier and a second identifier, where the second identifier is an identifier sent by the network scheduling device to a network forwarding device, where the first identifier is a source controller An identifier sent to the network scheduling device, the first identifier and the second identifier having a matching relationship;

The target controller broadcasts first target controller matching information on a control plane of the software defined network, the first target controller matching information including the first identifier and address information of the target controller;

Receiving, by the target controller, the third network forwarding device that is sent according to the address information of the target controller after the network forwarding device determines that the first identifier and the second identifier satisfy the matching relationship Information, the third network forwarding device matching information includes the second identifier and address information of the network forwarding device;

Determining, by the target controller, that the second identifier sent by the network forwarding device and the first identifier meet the matching relationship, and establishing, according to the address information of the network forwarding device, the network forwarding device connection.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, after the target controller establishes a connection with the network forwarding device, the method further includes:

Sending, by the target controller, a networking success notification message to the network scheduling device, so that the network scheduling device sends a release control right response message to the source controller; or

The target controller sends a networking success notification message to the source controller to cause the source controller to release control.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, the address information of the target controller includes a default address of the target controller;

In a fifth aspect, the present invention provides a network scheduling device, including:

a generating module, configured to generate an identifier pair for networking between the source controller and the network forwarding device;

An identifier sending module, configured to send the first identifier in the identifier pair to source control Transmitting the second identifier in the identifier pair to the network forwarding device, the first identifier and the second identifier having a matching relationship, so that the source controller and the network forwarding device And performing networking according to the matching relationship between the first identifier and the second identifier.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the method further includes: a receiving module, configured to send, by the identifier sending module, the first identifier in the identifier pair to source control After transmitting the second identifier of the identifier pair to the network forwarding device, receiving the release control right request information sent by the source controller, where the source controller and the network forwarding device network After the success, the source controller has control over the network forwarding device;

a selection module, configured to select, according to the state information of the software-defined network, a target controller and the network forwarding device to perform networking in the registered controller;

The identifier sending module is further configured to send the first identifier to the target controller, so that the target controller and the network forwarding device are configured according to the first identifier and the second identifier The matching relationship of the characters is organized;

The receiving module is further configured to: receive a network success notification message sent by the target controller, and send release control right response information to the source controller.

With the fifth aspect or the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the receiving module is further configured to generate, in the generating module, a network forwarding device Receiving, by the source controller, the identifier request information sent by the network forwarding device, where the identifier request information includes the identifier of the network forwarding device;

The method further includes: an authentication module, configured to determine, according to the identifier of the network forwarding device and the legal network forwarding device identifier list, that the network forwarding device passes the authentication;

The selection module is further configured to select, according to the state information of the software-defined network, the source controller and the network forwarding device to perform networking in the registered controller.

With the second possible implementation of the fifth aspect, in a third possible implementation manner of the fifth aspect, the network forwarding device receives the second identifier sent by the network scheduling device, in a software definition The control plane of the network broadcasts the first network forwarding device matching information, where the first network forwarding device matching information includes the second identifier and address information of the network forwarding device, and the receiving the source controller determines the first An identifier and the second identifier are full After the matching relationship, the first source controller matching information sent according to the address information of the network forwarding device, the first source controller matching information includes the first identifier and an address of the source controller Determining that the first identifier sent by the source controller and the second identifier satisfy the matching relationship, and establishing a connection with the source controller according to the address information of the source controller; or

Receiving, by the source controller, the first identifier sent by the network scheduling device, and broadcasting, by the control plane of the software-defined network, second source controller matching information, where the second source controller matching information includes the first The identifier and the address information of the source control are sent by the network forwarding device according to the address information of the source controller after determining that the first identifier and the second identifier satisfy the matching relationship The second network forwarding device matching information, where the second network forwarding device matching information includes the second identifier and address information of the network forwarding device, and determining the second identifier sent by the network forwarding device The first identifier satisfies the matching relationship, and establishes a connection with the network forwarding device according to the address information of the network forwarding device.

A sixth aspect of the present invention provides a network forwarding device, including:

a receiving module, configured to receive a second identifier in an identifier pair sent by the network scheduling device; the identifier pair includes a first identifier and the second identifier, where the first identifier is the network scheduling An identifier sent by the device to the source controller, the first identifier and the second identifier having a matching relationship;

a broadcast module, configured to broadcast, by the control plane of the software-defined network, the first network forwarding device matching information, where the first network forwarding device matching information includes the second identifier and address information of the network forwarding device;

The receiving module is further configured to: receive, by the source controller, a first source that is sent according to address information of the network forwarding device after determining that the first identifier and the second identifier satisfy the matching relationship The controller matches the information, where the first source controller matching information includes the first identifier and address information of the source controller;

a processing module, configured to determine that the first identifier and the second identifier sent by the source controller meet the matching relationship, and establish, with the source controller, the source controller according to the address information of the source controller connection.

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the receiving module The block is further configured to receive second source controller matching information that is broadcast by the source controller on a control plane of the software-defined network, where the second source controller matching information includes the first identifier and the source Address information of the controller;

The processing module is further configured to: determine that the first identifier and the second identifier meet the matching relationship, and send a second network forwarding device to the source controller according to address information of the source controller Matching information, the second network forwarding device matching information includes the second identifier and address information of the network forwarding device, so that the source controller is configured according to the first identifier and the second identifier The matching relationship and the address information of the network forwarding device establish a connection with the network forwarding device.

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, in a second possible implementation manner of the sixth aspect, the receiving module is further configured to: control, by the source controller, according to the source The working state of the device triggers a control right handover to the network forwarding device, the source controller sends a release control right request message to the network scheduling device, and the network scheduling device sends the first identifier to the target controller After the processing module establishes a connection with the source controller, the network forwarding device receives the first target controller matching information broadcast by the target controller on the control plane of the software-defined network. The first target controller matching information includes the first identifier and address information of the target controller;

The processing module is further configured to: determine that the first identifier and the second identifier broadcast by the target controller satisfy the matching relationship;

And a sending module, configured to send third network forwarding device matching information to the target controller according to the address information of the target controller, where the third network forwarding device matching information includes the second identifier and The network forwarding device address information, so that the target controller establishes with the network forwarding device according to the matching relationship between the first identifier and the second identifier and the address information of the network forwarding device. Connection.

According to a seventh aspect, an embodiment of the present invention provides a controller, where the controller is a source controller, and includes:

a receiving module, configured to receive a first identifier in an identifier pair sent by a network scheduling device; the identifier pair includes the first identifier and a second identifier, and the second identifier is the network scheduling An identifier sent by the device to the network forwarding device, where the first identifier and the second identifier have a matching relationship; a broadcast module, configured to broadcast second source controller matching information on a control plane of the software-defined network, where the second source controller matching information includes the first identifier and the source-controlled address

I Ή自, .,

The receiving module is further configured to: receive, by the network forwarding device, a second network that is sent according to address information of the source controller after determining that the first identifier and the second identifier satisfy the matching relationship Forwarding device matching information, where the second network forwarding device matching information includes the second identifier and address information of the network forwarding device;

a processing module, configured to determine that the second identifier sent by the network forwarding device and the first identifier meet the matching relationship, and establish, according to address information of the network forwarding device, a network forwarding device connection.

With reference to the seventh aspect, in a first possible implementation manner of the seventh aspect,

The receiving module is further configured to: receive, by the network forwarding device, first network forwarding device matching information that is broadcasted by a control plane of the software-defined network, where the first network forwarding device matching information includes a second identifier and the Address information of the network forwarding device;

The processing module is further configured to determine that the first identifier and the second identifier satisfy the matching relationship;

The first sending module is configured to send first source controller matching information to the network forwarding device according to the address information of the network forwarding device, where the first source controller matching information includes the first identifier And the address information of the source controller, so that the network forwarding device establishes with the source controller according to the matching relationship between the first identifier and the second identifier and the address information of the source control Connection.

With reference to the seventh aspect, or the first possible implementation manner of the seventh aspect, in a second possible implementation manner of the seventh aspect, the method further includes:

a first switching module, configured to trigger a control right handover to the network forwarding device according to an operating state of the source controller after the processing module establishes a connection with the network forwarding device;

a second sending module, configured to send a release control right request message to the network scheduling device, to enable the network scheduling device to send the first identifier to a target controller;

The receiving module is further configured to: receive release control right response information sent by the network scheduling device after the target controller establishes a connection with the network forwarding device. With reference to the seventh aspect, or the first possible implementation manner of the seventh aspect, in a third possible implementation manner of the seventh aspect, the method further includes:

a second switching module, configured to trigger a control right handover to the network forwarding device according to an operating state of the source controller after the processing module establishes a connection with the network forwarding device;

a third sending module, configured to determine a target controller, and send the first identifier to the target controller, so that the target controller performs a matching relationship according to the first identifier and the second identifier Establishing a connection with the network forwarding device;

The receiving module is further configured to: receive a notification message that the target controller sent by the target controller successfully establishes a connection with the network forwarding device;

The processing module is further configured to release control of the network forwarding device.

In an eighth aspect, the present invention provides a controller, where the controller is a target controller, including: a receiving module, configured to receive a first identifier in an identifier pair sent by a network scheduling device or a source controller, The identifier pair includes a first identifier and a second identifier, where the second identifier is an identifier sent by the network scheduling device to the network forwarding device, where the first identifier is a source controller scheduling the network An identifier sent by the device, the first identifier and the second identifier have a matching relationship;

a broadcast module, configured to broadcast, in a control plane of the software-defined network, first target controller matching information, where the first target controller matching information includes the first identifier and address information of the target controller;

The receiving module is further configured to: receive, by the network forwarding device, a third network that is sent according to the address information of the target controller after determining that the first identifier and the second identifier satisfy the matching relationship Forwarding device matching information, where the third network forwarding device matching information includes the second identifier and address information of the network forwarding device;

With reference to the eighth aspect, in a first possible implementation manner of the eighth aspect, the method further includes: a sending module, after the processing module establishes a connection with the network forwarding device,

Sending a network success notification message to the network scheduling device, so that the network scheduling device Sending a release control response message to the source controller; or

Sending a network success notification message to the source controller, so that the source controller releases the control. The ninth aspect of the present invention provides a networking system based on a software-defined network, including: a network scheduling device, and network forwarding. Device, source controller, where:

The network scheduling device is configured to generate an identifier pair for networking between the source controller and the network forwarding device, and send the first identifier in the identifier pair to the source controller, where the identifier pair is The second identifier is sent to the network forwarding device, and the first identifier and the second identifier have a matching relationship;

The network forwarding device is configured to receive a second identifier of the identifier pair sent by the network scheduling device, and broadcast, by the control plane of the software-defined network, the first network forwarding device matching information, where the first network forwarding device matching information includes The second identifier and the address information of the network forwarding device, after receiving the source controller, after determining that the first identifier and the second identifier satisfy the matching relationship, according to the network forwarding device First source controller matching information sent by the address information, the first source controller matching information includes the first identifier and address information of the source controller, and determining the number sent by the source controller An identifier and the second identifier satisfy the matching relationship, and establishing a connection with the source controller according to the address information of the source controller;

The source controller is configured to receive a first identifier in an identifier pair sent by the network scheduling device, and broadcast second source controller matching information on a control plane of the software-defined network, where the second source controller matching information includes The first identifier and the source controlled address information, after receiving the network forwarding device, after determining that the first identifier and the second identifier satisfy the matching relationship, according to the source controller The second network forwarding device matching information sent by the address information, the second network forwarding device matching information includes the second identifier and address information of the network forwarding device, and determining the number sent by the network forwarding device The second identifier and the first identifier satisfy the matching relationship, and establish a connection with the network forwarding device according to the address information of the network forwarding device.

With reference to the ninth aspect, in a first possible implementation manner of the ninth aspect, the system further includes: a target controller;

The source controller is further configured to: trigger on the network according to an operating state of the source controller Controlling the switching of the control device, sending a release control right request message to the network scheduling device, and receiving the release control right response message sent by the network scheduling device after the target controller establishes a connection with the network forwarding device ;

The network scheduling device is further configured to: receive the release control right request information sent by the source controller; wherein, after the source controller and the network forwarding device are successfully networked, the source controller is configured to the network The forwarding device has control, and according to the state information of the software-defined network, in the registered controller, the target controller is selected to be networked with the network forwarding device, and the first controller is sent to the target controller. Receiving, by the identifier, a network success notification message sent by the target controller, and sending release control right response information to the source controller;

The target controller is configured to receive a first identifier in an identifier pair sent by the network scheduling device, and broadcast, in a control plane of the software-defined network, first target controller matching information, where the first target controller matches The information includes the first identifier and address information of the target controller, and the receiving, by the network forwarding device, after determining that the first identifier and the second identifier satisfy the matching relationship, according to the target The third network forwarding device matching information sent by the address information of the controller, where the third network forwarding device matching information includes the second identifier and the address information of the network forwarding device, and determining the location sent by the network forwarding device The second identifier and the first identifier satisfy the matching relationship, establish a connection with the network forwarding device according to the address information of the network forwarding device, and send a networking success notification message to the network scheduling device. So that the network scheduling device sends a release control right response message to the source controller;

The network forwarding device is further configured to: receive first target controller matching information that is broadcast by the target controller on a control plane of the software-defined network, where the first target controller matching information includes the first identifier Determining, by the address information of the target controller, that the first identifier and the second identifier broadcast by the target controller satisfy the matching relationship, according to the address information of the target controller, to the The target controller sends a third network forwarding device matching information, where the third network forwarding device matching information includes the second identifier and address information of the network forwarding device, so that the target controller is configured according to the first A matching relationship between the identifier and the second identifier and address information of the network forwarding device establishes a connection with the network forwarding device.

With reference to the ninth aspect, in a second possible implementation manner of the ninth aspect, the system further Including: target controller;

The source controller is further configured to: trigger a control right handover to the network forwarding device according to an operating state of the source controller, determine the target controller, and send the first identifier to the target controller So that the target controller establishes a connection with the network forwarding device according to a matching relationship between the first identifier and the second identifier, and receives the target controller sent by the target controller and The network forwarding device successfully establishes a connection notification message, and releases control of the network forwarding device;

The target controller is configured to receive a first identifier in an identifier pair sent by the source controller, and broadcast, in a control plane of the software-defined network, first target controller matching information, where the first target controller matches information Include the first identifier and the address information of the target controller, and after receiving the network forwarding device, after determining that the first identifier and the second identifier satisfy the matching relationship, according to the target control The third network forwarding device matching information sent by the address information of the device, the third network forwarding device matching information includes the second identifier and address information of the network forwarding device, and determining the The second identifier and the first identifier satisfy the matching relationship, establish a connection with the network forwarding device according to the address information of the network forwarding device, and send a networking success notification message to the source controller, Taking the source controller to release control rights;

A network-defined network-based networking method and device are provided by the network scheduling device, where the network scheduling device generates an identifier pair for the source controller and the network forwarding device to perform networking, and the network scheduling device sets the first identifier of the identifier pair. The symbol is sent to the source controller, and the second identifier in the identifier pair is sent to the network forwarding device, and the first identifier and the second identifier have a matching relationship, so that the source The controller and the network forwarding device perform networking according to the matching relationship between the first identifier and the second identifier. In the case of a large network, it is not necessary to manually configure the controller address for the network forwarding device, that is, no manual participation is required, and the implementation is simple.

BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below, and obviously, in the following description The drawings are only some of the embodiments of the present invention, and other drawings may be obtained from those skilled in the art without departing from the drawings.

Figure 1 is a schematic diagram of a system architecture of a software-defined network;

2 is a schematic flowchart of Embodiment 1 of a networking method based on a software-defined network according to the present invention; FIG. 3 is a schematic flowchart of Embodiment 2 of a networking method based on a software-defined network according to the present invention; FIG. 4 is a schematic diagram of a software-defined network according to the present invention. FIG. 5 is a schematic flowchart of Embodiment 4 of a networking method based on a software-defined network according to the present invention; FIG. 6 is a schematic diagram of initialization of a networking method based on a software-defined network according to the present invention; A schematic diagram of Embodiment 1 of the control domain switching provided by the embodiment of the present invention;

FIG. 8 is a schematic diagram of Embodiment 2 of a control domain handover according to an embodiment of the present disclosure;

9 is a schematic structural diagram of Embodiment 1 of a network scheduling device according to the present invention;

10 is a schematic structural diagram of Embodiment 2 of a network scheduling device according to the present invention;

FIG. 11 is a schematic structural diagram of Embodiment 1 of a network forwarding device according to the present invention;

12 is a schematic structural diagram of Embodiment 1 of a source controller according to the present invention;

13 is a schematic structural diagram of Embodiment 1 of an object controller according to the present invention;

14 is a schematic structural diagram of Embodiment 3 of a network scheduling device according to the present invention;

15 is a schematic structural diagram of Embodiment 2 of a network forwarding device according to the present invention;

16 is a schematic structural diagram of Embodiment 2 of a source controller according to the present invention;

17 is a schematic structural diagram of Embodiment 2 of an object controller according to the present invention;

FIG. 18 is a schematic diagram of a networking system based on a software-defined network according to the present invention. detailed description

The technical solution in the embodiment of the present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention. The invention is described in a clear and complete manner, and it is obvious that the described embodiments are only a part of the embodiments of the invention, rather than all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.

Figure 1 is a schematic diagram of the system architecture of a software-defined network. As shown in FIG. 1, the software-defined network provided by this embodiment includes: a network scheduling device, multiple controllers C1-C3, and multiple network forwarding devices Sl-S4. The network scheduling device and the plurality of controllers C1-C3 are located at the network control layer, and the network forwarding device is located at the network forwarding layer.

The network scheduling device may be a special type of controller, or a scheduling module or component integrated in the controller, mainly used for network authentication of the controller and the network forwarding device; generation and management of identifier pairs; The status information of the network is distributed by identifiers, and the status information of the software-defined network includes network topology, service requirements, real-time network status, etc.; mapping storage of identifiers and device information;

Controllers C1-C3, in addition to the existing controller functions (topology discovery, device management, route calculation, policy management, quality of service (QoS) guarantee, etc.) The network scheduling device applies an identifier, negotiates an identifier with the network forwarding device, and performs identifier matching.

Multiple network forwarding devices S1-S4, each network forwarding device may specifically be a device having a forwarding function, such as a switch. In addition to the functions of the existing network forwarding device, it also negotiates identifiers with the controller and performs identifier matching and storage identification. Functions such as mapping of symbols and controller addresses.

In the specific application process, the controller defines the core components of the network for the software. The controller exists in the form of a software platform and enjoys centralized control. The algorithm, logic and rules of the controller are configurable. After receiving the command from the controller, the network forwarding device updates the local rules and completes the data forwarding.

The specific implementation of each component in Fig. 1 will be described in detail below with reference to specific embodiments.

FIG. 2 is a schematic flowchart of Embodiment 1 of a networking method for a software-defined network according to the present invention. The execution body of this embodiment is the network scheduling device in FIG. 1, and the network scheduling device may be composed of any software and/or hardware. As shown in FIG. 2, the method provided in this embodiment includes:

Step 201: The network scheduling device generates a network for the source controller and the network forwarding device to perform networking. Pair of identifiers;

Step 202: The network scheduling device sends a first identifier in the identifier pair to a source controller, and sends a second identifier in the identifier pair to a network forwarding device, where the first identifier is And the second identifier has a matching relationship, so that the source controller and the network forwarding device perform networking according to a matching relationship between the first identifier and the second identifier.

The application scenario of this embodiment is as shown in the embodiment of FIG. 1 , and details are not described herein again. In step 201, the network scheduling device generates an identifier pair for the source controller and the network forwarding device to perform networking. The identifier pair includes a first identifier and a second identifier, the first identifier and the second identifier having a matching relationship. In a specific implementation process, the network scheduling device generates an identifier pair including the following possible implementation manners.

A possible implementation manner is: the network scheduling device generates an identifier pair according to a preset matching rule;

Specifically, the network scheduling device may customize the preset matching rule, and then generate an identifier pair according to the preset matching rule, and the identifier pair may specifically be a paired string sequence or the like.

Another possible implementation manner is: the network scheduling device generates the identifier pair according to a preset encryption algorithm.

Specifically, the network scheduling device generates an identifier pair according to a preset encryption algorithm. The default encryption algorithm can be DES, 3DES, RC2, RC4, IDEA, DSA, RSA, AES, BLOWFISH,

For MD5 and other encryption algorithms, the identifier pair can be implemented as a key pair.

In step 202, the network scheduling device sends the first identifier in the identifier pair to the source controller and the second identifier in the identifier pair to the network forwarding device.

In the process of networking the source controller and the network forwarding device, the networking process may be initiated by the source controller by broadcasting the first identifier, or may be initiated by the network forwarding device by broadcasting the second identifier. After the networking is initiated, The source controller and the network forwarding device may perform networking according to a matching relationship between the first identifier and the second identifier. The process of establishing a connection between the source controller and the network forwarding device does not need to specify the address of the other party in the controller or the network forwarding device, but resolves the address of the identifier through identifier negotiation, and initiates a specification definition to the address according to the parsed result. Handshake request, initiate connection.

The networking method of the software-defined network provided by the embodiment of the present invention, the network scheduling device generates an identifier pair for the source controller and the network forwarding device to perform networking, and the network scheduling device will mark Sending the first identifier of the identifier pair to the source controller, and sending the second identifier of the identifier pair to the network forwarding device, the first identifier and the second identifier have a matching relationship, so that the source controller and the network The forwarding device performs networking according to the matching relationship between the first identifier and the second identifier. In the case of a large network, it is not necessary to manually configure the controller address for the network forwarding device, that is, no manual participation is required, and the implementation is simple.

FIG. 3 is a schematic flowchart of Embodiment 2 of a networking method for a software-defined network according to the present invention. The execution body of this embodiment is the network forwarding device in FIG. 1, and the network forwarding device may be composed of any software and/or hardware. As shown in FIG. 3, the method provided in this embodiment includes:

Step 301: The network forwarding device receives a second identifier in an identifier pair sent by the network scheduling device, where the identifier pair includes a first identifier and the second identifier, where the first identifier is An identifier sent by the network scheduling device to the source controller, where the first identifier and the second identifier have a matching relationship;

Step 302: The network forwarding device broadcasts first network forwarding device matching information on a control plane of the software-defined network, where the first network forwarding device matching information includes the second identifier and address information of the network forwarding device. ;

Step 303: The network forwarding device receives, after determining, by the source controller, that the first identifier and the second identifier meet the matching relationship, and sends the first information according to the address information of the network forwarding device. Source controller matching information, where the first source controller matching information includes the first identifier and address information of the source controller;

Step 304: The network forwarding device determines that the first identifier and the second identifier sent by the source controller meet the matching relationship, and establishes and performs according to the address information of the source controller. The connection of the source controller.

The application scenario of this embodiment is as shown in the embodiment of FIG. 1 , and details are not described herein again. This embodiment mainly describes a process initiated by the network forwarding device to establish a connection with the source controller and perform networking.

In step 301, the network forwarding device receives a second identifier in the pair of identifiers sent by the network scheduling device. When the network forwarding device needs to establish a connection with the source controller, in step 302, the network forwarding device broadcasts the first network forwarding device matching information on the control plane of the software-defined network, where the first network forwarding device matching information includes the second identifier. And the address information of the network forwarding device. When the source controller acquires the second identifier broadcast by the network forwarding device and the address information of the network forwarding device, determining whether the first identifier stored locally matches the second identifier, and when matching, the source controller stores the network. Forwarding the address information of the device, the source controller sends the first source controller matching information to the network forwarding device according to the address information, where the first source controller matching information includes the first identifier and the address information of the source controller.

In step 303, the network forwarding device receives the first source controller matching information, and obtains the first identifier and the source controlled address information. In step 304, the network forwarding device determines whether the first identifier and the second identifier satisfy a matching relationship. When the matching, the network forwarding device stores the address information controlled by the source, and the network forwarding device controls the source information according to the source control. The device starts a handshake message and establishes a connection relationship.

Optionally, in a specific implementation process, the networking may also be initiated by the source controller. Specifically, the network forwarding device receives second source controller matching information broadcast by the source controller on a control plane of the software-defined network, where the second source controller matching information includes a first identifier; the network forwarding device determines the first identifier and the The second identifier satisfies the matching relationship, and sends the second network forwarding device matching information to the source controller, where the second network forwarding device matching information includes the second identifier and the address information of the source controller, so that the source controller is based on the first identifier. The matching relationship with the second identifier establishes a connection with the network forwarding device.

The network-defined network-based networking method provided by the embodiment of the present invention, the network forwarding device receives the second identifier in the identifier pair sent by the network scheduling device; and the network forwarding device broadcasts the first network forwarding device on the control plane of the software-defined network. Matching information, the first network forwarding device matching information includes a second identifier and address information of the network forwarding device; the network forwarding device receiving source controller determines, according to the network forwarding device, that the first identifier and the second identifier satisfy the matching relationship The first source controller matching information sent by the address information, the first source controller matching information includes the first identifier and the address information of the source controller; the network forwarding device determines the first identifier and the second identifier sent by the source controller The symbol satisfies the matching relationship, and establishes a connection with the source controller according to the address information of the source controller. In the process of networking the network forwarding device and the source controller, it is not necessary to manually configure the controller address for the network forwarding device, that is, no manual participation is required, and the implementation is simple.

4 is a schematic flowchart of Embodiment 3 of a networking method based on a software-defined network according to the present invention. The execution body of this embodiment is the controller in FIG. 1. To illustrate the switching process of the controller, the controller in this embodiment is Source controller, which can be any software and/or hardware group to make. As shown in FIG. 4, the method provided in this embodiment includes:

Step 401: The source controller receives a first identifier in an identifier pair sent by the network scheduling device; the identifier pair includes the first identifier and a second identifier, and the second identifier is An identifier sent by the network scheduling device to the network forwarding device, where the first identifier and the second identifier have a matching relationship;

Step 402: The source controller broadcasts second source controller matching information on a control plane of the software-defined network, where the second source controller matching information includes the first identifier and the source-controlled address information.

Step 403: The source controller receives, after determining that the first identifier and the second identifier satisfy the matching relationship, the network forwarding device sends the second information according to the address information of the source controller. The network forwarding device matching information, where the second network forwarding device matching information includes the second identifier and address information of the network forwarding device;

Step 404: The source controller determines that the second identifier sent by the network forwarding device and the first identifier meet the matching relationship, and establishes and is performed according to address information of the network forwarding device. The connection of the network forwarding device.

The application scenario of this embodiment is as shown in the embodiment of FIG. 1 , and details are not described herein again. This embodiment mainly describes a process initiated by the source controller to establish a connection with the network forwarding device and perform networking.

In step 401, the source controller receives the first identifier in the pair of identifiers sent by the network scheduling device. When the source controller needs to establish a connection with the network forwarding device, in step 402, the source controller broadcasts the second source controller matching information on the control plane of the software-defined network, and the second source controller matching information includes the first identifier. And source control address information.

When the network forwarding device acquires the first identifier broadcasted by the source controller, determining whether the locally stored second identifier matches the first identifier, and when matching, the network forwarding device stores the address information of the source controller, and the network forwards The device sends the second network forwarding device matching information to the source controller according to the address information, where the second network forwarding device matching information includes the second identifier.

In step 403, the source controller receives the second network forwarding device matching information that is sent by the network forwarding device and includes the second identifier and the address information of the network forwarding device. In step 404, the source controller determines whether the second identifier sent by the network forwarding device matches the first identifier. When matching, the source controller stores address information of the network forwarding device, and the source controller forwards according to the network. The address information of the device starts a handshake message with the network forwarding device to establish a connection relationship.

Optionally, in a specific implementation process, the networking may be initiated by the network forwarding device. Specifically, the source controller receives the first network forwarding device matching information that is broadcast by the network forwarding device on the control plane of the software-defined network, where the first network forwarding device matching information includes the second identifier and the address information of the network forwarding device; Determining that the first identifier and the second identifier satisfy the matching relationship; the source controller sends the first source controller matching information to the network forwarding device according to the address information of the network forwarding device, where the first source controller matching information includes the first identifier And address information of the source controller, so that the network forwarding device establishes a connection with the source controller according to the matching relationship between the first identifier and the second identifier and the address information controlled by the source.

The software-defined network-based networking method provided by the embodiment of the present invention, the source controller receives the first identifier in the identifier pair sent by the network scheduling device; the identifier pair includes the first identifier and the second identifier, and the second The identifier is an identifier sent by the network scheduling device to the network forwarding device, the first identifier and the second identifier have a matching relationship; the source controller broadcasts the second source controller matching information, the second source, on a control plane of the software-defined network The controller matching information includes a first identifier and source controlled address information. The source controller receives a second sent by the network forwarding device according to the address information of the source controller after determining that the first identifier and the second identifier satisfy the matching relationship. The network forwarding device matching information, the second network forwarding device matching information includes a second identifier and address information of the network forwarding device; the source controller determines that the second identifier sent by the network forwarding device matches the first identifier, according to the matching relationship, The network forwards the address information of the device to establish a connection with the network forwarding device. In the networking process of the source controller and the network forwarding device, manual configuration is not required, and the implementation is simple.

5 is a schematic flowchart of Embodiment 4 of a networking method based on a software-defined network according to the present invention. The execution body of this embodiment is the controller in FIG. 1. To describe the switching process of the controller, the controller in this embodiment is A target controller, which can be composed of any software and/or hardware. As shown in FIG. 5, the method provided in this embodiment includes:

Step 501: The target controller receives a first identifier in an identifier pair sent by a network scheduling device or a source controller, where the identifier pair includes a first identifier and a second identifier, where the second identifier is An identifier sent by the network scheduling device to the network forwarding device, where the first identifier is an identifier sent by the source controller to the network scheduling device, and the first identifier and the second identifier have a match relationship; Step 502: The target controller broadcasts first target controller matching information on a control plane of the software-defined network, where the first target controller matching information includes the first identifier and address information of the target controller ;

Step 503: The target controller receives, after determining that the first identifier and the second identifier satisfy the matching relationship, the network forwarding device sends the third information according to the address information of the target controller. The network forwarding device matching information, where the third network forwarding device matching information includes the second identifier and address information of the network forwarding device;

Step 504: The target controller determines that the second identifier sent by the network forwarding device and the first identifier meet the matching relationship, and establishes and is performed according to address information of the network forwarding device. The connection of the network forwarding device.

The application scenario of this embodiment is as shown in the embodiment of FIG. 1 , and details are not described herein again. In the specific implementation process, when the load of the source controller reaches the upper limit, the source controller upgrades or the source controller needs load balancing, the network forwarding device is controlled by the source controller, and the switch to the network forwarding device is controlled by the target controller. .

In the prior art, when the network size changes and the controller performs handover, it is necessary to manually specify the controller address on the network forwarding device where the control domain handover occurs.

In the present invention, when the source controller switches to the target controller, the source controller sends the first identifier stored locally to the network scheduling device, and then the target controller receives the identifier pair sent by the network scheduling device. An identifier, and then the target controller establishes a connection with the network forwarding device according to the matching relationship between the first identifier and the second identifier, and the specific manner of establishing the connection may refer to the source controller according to the first identifier and the second The matching relationship of the identifiers establishes a connection with the network forwarding device.

According to the networking method of the software-defined network provided by the embodiment of the present invention, the target controller receives the first identifier in the identifier pair sent by the network scheduling device or the source controller, and the identifier pair includes the first identifier and the second identifier. a second identifier is an identifier sent by the network scheduling device to the network forwarding device, where the first identifier is an identifier sent by the source controller to the network scheduling device, and the first identifier and the second identifier have a matching relationship; The controller broadcasts first target controller matching information on a control plane of the software defined network, the first target controller matching information includes a first identifier and address information of the target controller; and the target controller receives the network forwarding device in determining the first identifier And after the second identifier satisfies the matching relationship, according to the address information of the target controller The third network forwarding device matching information, the third network forwarding device matching information includes a second identifier and address information of the network forwarding device; the target controller determines that the second identifier sent by the network forwarding device matches the first identifier, according to the matching relationship, The network forwards the address information of the device to establish a connection with the network forwarding device. No manual configuration is required, so that the switching from the source controller to the target controller is simple to implement.

In the following, a specific embodiment is used to specify the authentication of the controller and the network forwarding device by the network scheduling device, and the switching between the source controller and the target controller.

FIG. 6 is a schematic diagram of initialization of a networking method based on a software-defined network according to the present invention. In FIG. 6, the internal composition structure of the network scheduling device is mainly shown, and the initialization process is completed by scheduling the connection and communication of each module inside the device through the network. The initialization process involved in this embodiment is mainly a process in which the network scheduling device authenticates the controller and the network forwarding device, and assigns an identifier. Referring to FIG. 6, the authentication process of this embodiment mainly includes the following processes:

(1) The network administrator registers the legal network forwarding device identifier with the network scheduling device through the upper-layer interface, and the network scheduling device writes the identifier of the legal network forwarding device to the legal network forwarding device identifier list in the database through the upper-layer interface; Receiving a registration request sent by the source controller, and sending a registration success response to the source controller; the network scheduling device receives the registration request sent by the target controller, and sends a registration success response to the target controller.

Specifically, for convenience of presentation, the controller of the embodiment is divided into a source controller and a target controller. In the specific implementation process, for the network scheduling device, in the registration process, the source controller and the target are not distinguished. The controller, in the database of the network scheduling device, stores the identity of the registered controller.

(2) After the controller is started, the registration request is sent to the message scheduling module of the network scheduling device, and the network scheduling device stores the identifier of the controller in the database.

(3) When the network forwarding device is to join the networking, the network forwarding device sends an identifier request message to the message scheduling module of the network scheduling device, where the identifier request message includes the identifier of the network forwarding device.

(4) The message scheduling module of the network scheduling device receives the identifier request information sent by the network forwarding device, obtains a legal network forwarding device identifier list, and determines that the network forwarding device passes the authentication according to the identifier of the network forwarding device and the legal network forwarding device identifier list. Specifically, when the identifier of the network forwarding device is in the legal network forwarding device identifier list, determining the network forwarding The equipment certification passed.

(5) a message scheduling module of the network scheduling device, after confirming that the network forwarding device is legal, the message scheduling module communicates with the identifier generating module, and the identifier generating module of the network scheduling device generates an identifier pair, including the first identifier and Second identifier.

(6) The network scheduling device selects the source controller and the network forwarding device to perform networking according to the state information of the software-defined network in the registered controllers stored in the database.

(7) The message scheduling module of the network scheduling component sends the first identifier in the identifier pair to the source controller, and sends the second identifier in the identifier pair to the network forwarding device.

At this point, the initialization process is completed, and after that, the network forwarding device and the source controller perform networking according to the matching relationship between the first identifier and the second identifier. For the specific networking process, refer to the embodiment shown in Figure 3 and Figure 4, and details are not described here.

For the process of adding a new network forwarding device, refer to steps (5) to (7) for the initialization process, which is not described here.

The initialization process provided by the embodiment of the present invention completes the network access authentication of the network forwarding device by introducing a network scheduling device, which can greatly reduce the network security threat brought by the unauthenticated network forwarding device.

Further, in the embodiment shown in FIG. 6, the network scheduling device shown in FIG. 6 may further include an address generating module (not shown), and the address generating module identifies the first identifier in the identifier pair in the network scheduling device. The symbol is sent to the source controller, and before the second identifier in the identifier pair is sent to the network forwarding device, the connection address of the network forwarding device is generated, and the connection address belongs to the same network segment as the default address of the source controller. For example, in a large network, it is convenient to manage the address of the network forwarding device by setting the network forwarding device to the IP address of the same network segment as the source controller or the target controller.

Optionally, the network scheduling device sends the second identifier in the identifier pair to the network forwarding device, including: the network scheduling device sends the connection address of the network forwarding device and the second identifier in the identifier pair to the network forwarding device. .

In the specific implementation process, the source controller switches to the target controller, including two possible implementation modes, which are described in detail below.

FIG. 7 is a schematic diagram of Embodiment 1 of a control domain handover according to an embodiment of the present invention. In this embodiment, the switching between the source controller and the target controller is mainly controlled by the network scheduling device. In Figure 7 The controller including the network scheduling device scheduling includes a controller CI and a controller C2, the controller C1 is the source controller in the embodiment, and the controller C2 is the target controller in the embodiment, and is controlled before the switching. The controller C1 has control over the network forwarding device S1 and the network forwarding device S2. After the handover, the controller C2 has control over the network forwarding device S2. Referring to FIG. 7, the control domain switching in this embodiment specifically includes the following steps:

(1) The source controller triggers a control right handover to the network forwarding device S2 according to the working state of the source controller, and sends a release control right request message to the network scheduling device;

(2) The network scheduling device receives the release control right request information sent by the source controller. Specifically, after the source controller and the network forwarding device S2 are successfully networked, the source controller has control right to the network forwarding device S2, and the network scheduling device according to The software defines the status information of the network, and in the registered controller, selects the target controller and the network forwarding device S2 to perform networking;

(3) The network scheduling device sends a first identifier to the target controller, where the first identifier is a first identifier sent by the network scheduling device to the source controller;

(4) the target controller receives the first identifier in the identifier pair sent by the network scheduling device, and the target controller broadcasts the first target controller matching information on the control plane of the software-defined network, where the first target controller matching information includes An identifier and address information of the target controller;

(5) The network forwarding device S2 receives the first target controller matching information broadcast by the target controller on the control plane of the software-defined network, and the network forwarding device S2 determines that the first identifier and the second identifier broadcast by the target controller satisfy the matching relationship. ;

(6) The network forwarding device S2 sends the third network forwarding device matching information to the target controller, where the third network forwarding device matching information includes the second identifier and the address information of the network forwarding device;

(7) The target controller receives the third network forwarding device matching information sent by the network forwarding device S2 after determining that the first identifier and the second identifier satisfy the matching relationship, and the target controller determines the second identifier sent by the network forwarding device S2. And the first identifier satisfies a matching relationship;

(8) The target controller and the network forwarding device S2 establish a connection by using a handshake message;

(9) The target controller sends a networking success notification message to the network scheduling device;

(10) The network scheduling device receives the networking success notification message sent by the target controller, and sends a release control right response message to the source controller;

(11) The source controller receives the release control right response message sent by the network scheduling device after the target controller establishes a connection with the network forwarding device, and releases the control right to the network forwarding device S2. In the control domain switching provided by this embodiment, only the identifier information is transmitted between the source controller and the target controller, and the target controller broadcasts the obtained new identifier on the control plane to obtain the information of the switch that matches the matching, and constitutes The new control domain does not require manual reassignment of the controller address on the network forwarding device where the control domain switch occurs.

FIG. 8 is a schematic diagram of Embodiment 2 of a control domain handover according to an embodiment of the present invention. In this embodiment, the switching between the source controller and the target controller is mainly controlled by the source controller. In FIG. 8, the controller including the network scheduling device scheduling includes a controller C1 and a controller C2. The controller C1 is the source controller in the embodiment, and the controller C2 is the target controller in the embodiment. The controller C1 has control over the network forwarding device S1 and the network forwarding device S2. After the handover, the controller C2 has control over the network forwarding device S2. Referring to FIG. 8, the control domain switching in this embodiment specifically includes the following steps:

(1) The source controller triggers a control right handover to the network forwarding device S2 according to the working state of the source controller, and sends a release control right request message to the target controller;

(2) The source controller determines the target controller; specifically, the source controller negotiates with other controllers that can communicate at the controller plane, and confirms the controller (target controller) that agrees to receive the control of the network forwarding device S2. ;

(3) the source controller sends the first identifier to the target controller;

(4) the target controller receives the first identifier in the identifier pair sent by the source controller, and the target controller broadcasts the first target controller matching information on the control plane of the software-defined network, where the first target controller matching information includes An identifier and address information of the target controller;

(6) The network forwarding device S2 sends the third network forwarding device matching information to the target controller according to the address information of the target controller, where the third network forwarding device matching information includes the second identifier and the address information of the network forwarding device;

(7) The target controller receives the third network forwarding device matching information that is sent by the network forwarding device S2 according to the address information of the target controller after determining that the first identifier and the second identifier satisfy the matching relationship, and the target controller determines the network forwarding. The second identifier sent by the device S2 satisfies a matching relationship with the first identifier; (8) The target controller establishes a connection by using a handshake message according to the address information of the network forwarding device and the network forwarding device S2;

(9) The target controller sends a networking success notification message to the source controller;

(10) The source controller releases control of the network forwarding device S2.

In the control domain switching provided by this embodiment, only the identifier information is transmitted between the source controller and the target controller, and the target controller broadcasts the obtained new identifier on the control plane to obtain the information of the switch that matches the matching, and constitutes The new control domain does not require manual reassignment of the controller address on the network forwarding device where the control domain switch occurs.

Optionally, in each of the foregoing embodiments, the address information of the target controller includes a default address of the target controller; the address information of the source controller includes a default address of the source controller; and the address information of the network forwarding device includes a network forwarding device. The default address or the connection address assigned by the network scheduling device to the network forwarding device. The connection address belongs to the same network segment as the default address of the source controller.

In a specific implementation process, the default address of the target controller and the source controller may be an Internet Protocol (IP) address or a Medium Access Control (MAC) address. The default address of the network forwarding device may be an IP address or a MAC address, and the IP address or the MAC address may be an address when the network forwarding device is shipped.

Further, in order to facilitate management of the address information of the controller and the network forwarding device, the network scheduling device may generate a connection address of the network forwarding device, and the connection address belongs to the same network segment as the default address of the source controller. For example, in a large network, the network forwarding device can be set to the IP address of the same network segment as the source controller or the target controller, and the network forwarding device directly communicates with the source controller or the target controller through the IP address. By using a network scheduling device to allocate addresses to network forwarding devices, it is convenient to manage network forwarding devices.

FIG. 9 is a schematic structural diagram of Embodiment 1 of a network scheduling device according to the present invention. The network scheduling device 90 provided in this embodiment includes: a generating module 901 and a sending module 902.

a generating module 901, configured to generate an identifier pair for networking between the source controller and the network forwarding device;

The sending module 902 is configured to send the first identifier in the identifier pair to the source controller, and send the second identifier in the identifier pair to the network forwarding device, where the first identifier and the The second identifier has a matching relationship, so that the source controller and the network forwarding device perform networking according to the matching relationship between the first identifier and the second identifier. The network scheduling device provided by this embodiment may be used to implement the technical solution of the foregoing method embodiment, and the implementation principle and the technical effect are similar.

10 is a schematic structural diagram of Embodiment 2 of a network scheduling device according to the present invention. This embodiment is implemented on the basis of the embodiment of FIG. 9, and the details are as follows:

Optionally, the network scheduling device 90 provided in this embodiment further includes:

The receiving module 903 is configured to: after the identifier sending module sends the first identifier in the identifier pair to the source controller, and send the second identifier in the identifier pair to the network forwarding device, Receiving the release control right request information sent by the source controller; wherein, after the source controller and the network forwarding device are successfully networked, the source controller has control right to the network forwarding device;

The selecting module 904 is configured to select, according to the state information of the software-defined network, the target controller and the network forwarding device to perform networking in the registered controller.

The sending module 902 is further configured to send the first identifier to the target controller, so that the target controller and the network forwarding device are configured according to the first identifier and the second identifier. The matching relationship is organized;

The receiving module 903 is further configured to: receive a networking success notification message sent by the target controller, and send release control right response information to the source controller.

Optionally, the receiving module 903 is further configured to: before the generating module generates an identifier pair used by the network forwarding device and the source controller to perform networking, receiving identifier request information sent by the network forwarding device, where The identifier request information includes an identifier of the network forwarding device;

The method further includes: an authentication module 905, configured to determine, according to the identifier of the network forwarding device and the legal network forwarding device identifier list, that the network forwarding device passes the authentication;

The selection module 904 is further configured to select, according to the state information of the software-defined network, the source controller and the network forwarding device to perform networking in the registered controller.

Optionally, the network forwarding device receives the second identifier sent by the network scheduling device, and broadcasts, by the control plane of the software-defined network, the first network forwarding device matching information, where the first network forwarding device matching information includes The second identifier and the address information of the network forwarding device, after receiving the source controller, after determining that the first identifier and the second identifier satisfy the matching relationship, according to the network forwarding device First source control for sending address information The first source controller matching information includes the first identifier and the address information of the source controller, and the first identifier and the second identifier sent by the source controller are determined. And satisfying the matching relationship, establishing a connection with the source controller according to the address information of the source controller; or

FIG. 11 is a schematic structural diagram of Embodiment 1 of a network forwarding device according to the present invention. The network forwarding device 110 provided in this embodiment includes: a receiving module 1101, a broadcasting module 1102, and a processing module 1103.

The receiving module 1101 is configured to receive a second identifier in an identifier pair sent by the network scheduling device, where the identifier pair includes a first identifier and the second identifier, where the first identifier is the network An identifier sent by the scheduling device to the source controller, the first identifier and the second identifier having a matching relationship;

The broadcast module 1102 is configured to broadcast, by the control plane of the software-defined network, the first network forwarding device matching information, where the first network forwarding device matching information includes the second identifier and address information of the network forwarding device.

The receiving module 1101 is further configured to: receive, by the source controller, the first sent according to the address information of the network forwarding device after determining that the first identifier and the second identifier satisfy the matching relationship Source controller matching information, where the first source controller matching information includes the first identifier and address information of the source controller;

The processing module 1103 is configured to determine that the first identifier and the second identifier sent by the source controller meet the matching relationship, and establish, with the source controller, according to address information of the source controller. Connection.

Optionally, the receiving module 1101 is further configured to: receive the source controller in the software setting a second source controller matching information broadcasted by the control plane of the network, where the second source controller matching information includes the first identifier and address information of the source controller;

The processing module 1103 is further configured to: determine that the first identifier and the second identifier satisfy the matching relationship, and send a second network forwarding to the source controller according to the address information of the source controller. Device matching information, the second network forwarding device matching information includes the second identifier and address information of the network forwarding device, so that the source controller is configured according to the first identifier and the second identifier. And a matching relationship between the symbol and the address information of the network forwarding device, establishing a connection with the network forwarding device.

Optionally, the receiving module 1101 is further configured to: when the source controller triggers a control right handover to the network forwarding device according to an operating state of the source controller, where the source controller is to the network The scheduling device sends a release control right request message, and after the network scheduling device sends the first identifier to the target controller, after the processing module establishes a connection with the source controller, the network forwarding device receives the Determining, by the target controller, first target controller matching information broadcasted by a control plane of the software-defined network, where the first target controller matching information includes the first identifier and address information of the target controller;

The processing module 1103 is further configured to: determine that the first identifier and the second identifier that are broadcast by the target controller meet the matching relationship;

Optionally, the sending module is further configured to: send, according to the address information of the target controller, third network forwarding device matching information to the target controller, where the third network forwarding device matching information includes the a second identifier and address information of the network forwarding device, so that the target controller establishes a relationship according to a matching relationship between the first identifier and the second identifier and address information of the network forwarding device The connection of the network forwarding device.

The network forwarding device provided in this embodiment may be used to implement the technical solution of the foregoing method embodiment, and the implementation principle and the technical effect are similar.

FIG. 12 is a schematic structural diagram of Embodiment 1 of a source controller according to the present invention. The source controller 120 provided in this embodiment includes: a receiving module 1201, a broadcasting module 1202, and a processing module 1203.

The receiving module 1201 is configured to receive a first identifier in an identifier pair sent by the network scheduling device; the identifier pair includes the first identifier and the second identifier, and the second identifier is the network An identifier sent by the scheduling device to the network forwarding device, where the first identifier and the second identifier have a matching relationship; The broadcast module 1202 is configured to broadcast second source controller matching information on a control plane of the software-defined network, where the second source controller matching information includes the first identifier and the source-controlled address information;

The receiving module 1201 is further configured to: receive, after the network forwarding device determines that the first identifier and the second identifier satisfy the matching relationship, send the second information according to the address information of the source controller. The network forwarding device matching information, where the second network forwarding device matching information includes the second identifier and address information of the network forwarding device;

The processing module 1203 is configured to determine that the second identifier sent by the network forwarding device and the first identifier meet the matching relationship, and establish a network forwarding device according to the address information of the network forwarding device. Connection.

Optionally, the receiving module 1201 is further configured to: receive, by the network forwarding device, first network forwarding device matching information that is broadcasted by a control plane of the software-defined network, where the first network forwarding device matching information includes a second An identifier and address information of the network forwarding device;

The processing module 1203 is further configured to determine that the first identifier and the second identifier satisfy the matching relationship;

Optionally, the method further includes:

The receiving module is further configured to: receive release control right response information sent by the network scheduling device after the target controller establishes a connection with the network forwarding device.

Optionally, the method further includes:

a second switching module, configured to establish a connection with the network forwarding device at the processing module After that, according to the working state of the source controller, triggering a control right handover to the network forwarding device;

The source controller provided in this embodiment may be used to perform the technical solution of the foregoing method embodiment, and the implementation principle and the technical effect are similar.

FIG. 13 is a schematic structural diagram of Embodiment 1 of an object controller according to the present invention. The target controller 130 provided in this embodiment includes:

The receiving module 1301 is configured to receive a first identifier in an identifier pair sent by the network scheduling device or the source controller, where the identifier pair includes a first identifier and a second identifier, where the second identifier is An identifier sent by the network scheduling device to the network forwarding device, where the first identifier is an identifier sent by the source controller to the network scheduling device, and the first identifier and the second identifier have a matching relationship ;

The broadcast module 1302 is configured to broadcast, in a control plane of the software-defined network, first target controller matching information, where the first target controller matching information includes the first identifier and address information of the target controller;

The receiving module 1301 is further configured to: receive, after the network forwarding device determines that the first identifier and the second identifier satisfy the matching relationship, send the third information according to the address information of the target controller. The network forwarding device matching information, where the third network forwarding device matching information includes the second identifier and address information of the network forwarding device;

The processing module 1303 is configured to determine that the second identifier sent by the network forwarding device and the first identifier meet the matching relationship, and establish a network forwarding device according to the address information of the network forwarding device. Connection.

Optionally, the method further includes: a sending module, after the processing module establishes a connection with the network forwarding device,

Sending a network success notification message to the source controller, so that the source controller releases and controls the target controller provided in this embodiment, which may be used to perform the technical solution of the foregoing method embodiment, and the implementation principle and technical effect are similar. This embodiment will not be repeated here.

FIG. 14 is a schematic structural diagram of Embodiment 3 of a network scheduling device according to the present invention. The network scheduling device 140 provided in this embodiment includes a processor 1401, a transmitter 1402, and a receiver 1403.

The processor 1401 is configured to generate an identifier pair used by the source controller and the network forwarding device to perform networking;

The transmitter 1402 is configured to send the first identifier in the identifier pair to the source controller, and send the second identifier in the identifier pair to the network forwarding device, the first identifier and The second identifier has a matching relationship, so that the source controller and the network forwarding device perform networking according to a matching relationship between the first identifier and the second identifier.

Optionally, after the transmitter 1402 sends the first identifier in the identifier pair to the source controller, and sends the second identifier in the identifier pair to the network forwarding device,

The receiver 1403 is configured to receive the release control right request information sent by the source controller, where the source controller forwards the network to the network after the source controller and the network forwarding device are successfully networked. Have control

The processor 1401 is further configured to select, according to the state information of the software-defined network, a target controller and the network forwarding device to perform networking in the registered controller;

The transmitter 1402 is further configured to send the first identifier to the target controller, so that the target controller and the network forwarding device are configured according to the first identifier and the second identifier. Matching relationships are performed on the network;

The receiver 1403 is further configured to receive a network success notification message sent by the target controller, and send release control right response information to the source controller.

Optionally, before the processor 1401 generates an identifier pair for the network forwarding device and the source controller to perform networking,

The receiver 1403 is further configured to receive identifier request information sent by the network forwarding device, where the identifier request information includes an identifier of the network forwarding device.

The processor 1401 is further configured to: according to the identifier of the network forwarding device and a legal network Forwarding the device identification list, and determining that the network forwarding device passes the authentication;

The processor 1401 is further configured to select, according to the state information of the software-defined network, the source controller and the network forwarding device to perform networking in the registered controller.

Optionally, before the receiver 1403 receives the identifier request information sent by the network forwarding device,

The processor 1401 is further configured to obtain the legal network forwarding device identifier list, where the legal network forwarding device identifier list is used to authenticate the network forwarding device.

The receiver 1403 is further configured to receive a registration request sent by the source controller, and send a registration success response to the source controller.

The receiver 1403 is further configured to receive a registration request sent by the target controller, and send a registration success response to the target controller.

Optionally, the processor 1401 is specifically configured to: generate the identifier pair according to a preset matching rule; or generate the identifier pair according to a preset encryption algorithm.

Optionally, before the transmitter 1402 sends the first identifier in the identifier pair to the source controller, and sends the second identifier in the identifier pair to the network forwarding device, the processing The device 1401 is further configured to generate a connection address of the network forwarding device, where the connection address belongs to a same network segment as a default address of the source controller;

The transmitter 1402 is specifically configured to send a connection address of the network forwarding device and a second identifier of the identifier pair to a network forwarding device.

Optionally, the network forwarding device receives the second identifier sent by the network scheduling device, and broadcasts, by the control plane of the software-defined network, the first network forwarding device matching information, where the first network forwarding device matching information includes The second identifier and the address information of the network forwarding device, after receiving the source controller, after determining that the first identifier and the second identifier satisfy the matching relationship, according to the network forwarding device First source controller matching information sent by the address information, the first source controller matching information includes the first identifier and address information of the source controller, and determining the number sent by the source controller An identifier and the second identifier satisfy the matching relationship, and establishing a connection with the source controller according to address information of the source controller; or

Receiving, by the source controller, the first identifier sent by the network scheduling device, and broadcasting, by the control plane of the software-defined network, second source controller matching information, where the second source controller matches The information includes the first identifier and the source controlled address information, and the receiving, by the network forwarding device, after determining that the first identifier and the second identifier satisfy the matching relationship, according to the source control The second network forwarding device matching information sent by the address information of the device includes: the second identifier and the address information of the network forwarding device, and determining, by the network forwarding device, The second identifier and the first identifier satisfy the matching relationship, and establish a connection with the network forwarding device according to the address information of the network forwarding device.

The network scheduling device provided in this embodiment may be used to implement the technical solution of the foregoing method embodiment, and the implementation principle and the technical effect are similar.

FIG. 15 is a schematic structural diagram of Embodiment 2 of a network forwarding device according to the present invention. The network forwarding device 150 provided in this embodiment includes a receiver 1501, a transmitter 1502, and a processor 1503.

The receiver 1501 is configured to receive a second identifier in an identifier pair sent by a network scheduling device; the identifier pair includes a first identifier and the second identifier, and the first identifier is An identifier sent by the network scheduling device to the source controller, where the first identifier and the second identifier have a matching relationship;

The transmitter 1502 is configured to broadcast, by the control plane of the software-defined network, the first network forwarding device matching information, where the first network forwarding device matching information includes the second identifier and address information of the network forwarding device.

The receiver 1501 is further configured to receive, by the source controller, a first source that is sent according to address information of the network forwarding device after determining that the first identifier and the second identifier satisfy the matching relationship. The controller matches the information, where the first source controller matching information includes the first identifier and address information of the source controller;

The processor 1503 is configured to determine that the first identifier and the second identifier sent by the source controller meet the matching relationship, and establish and the source control according to the address information of the source controller. Connection.

Optionally, the receiver 1501 is further configured to receive second source controller matching information that is broadcast by the source controller on a control plane of the software-defined network, where the second source controller matching information includes the first An identifier and address information of the source controller;

The processor 1503 is further configured to determine that the first identifier and the second identifier satisfy the matching relationship, and send a second to the source controller according to the address information of the source controller. Network forwarding device matching information, where the second network forwarding device matching information includes the second identifier and address information of the network forwarding device, so that the source controller is configured according to the first identifier and the first The matching relationship between the two identifiers and the address information of the network forwarding device establishes a connection with the network forwarding device.

Optionally, before the receiver 1501 receives the second identifier in the identifier pair sent by the network scheduling device, the sender 1502 is further configured to send identifier request information to the network scheduling device, where the identifier The request information includes an identifier of the network forwarding device, so that the network scheduling device authenticates the network forwarding device.

Optionally, the source controller triggers a control right handover to the network forwarding device according to an operating state of the source controller, and the source controller sends a release control right request message to the network scheduling device, After the network scheduling device sends the first identifier to the target controller, after the processor 1503 establishes a connection with the source controller,

The receiver 1501 is further configured to receive first target controller matching information that is broadcast by the target controller on a control plane of the software-defined network, where the first target controller matching information includes the first identifier and Address information of the target controller;

The processor 1503 is further configured to determine that the first identifier and the second identifier broadcast by the target controller satisfy the matching relationship;

The transmitter 1502 is further configured to send third network forwarding device matching information to the target controller according to the address information of the target controller, where the third network forwarding device matching information includes the second identifier and The network forwarding device address information, so that the target controller establishes with the network forwarding device according to the matching relationship between the first identifier and the second identifier and the address information of the network forwarding device. Connection.

Optionally, the address information of the target controller includes a default address of the target controller;

The network forwarding device provided by this embodiment may be used to perform the technical solution of the foregoing method embodiment, and the implementation principle and the technical effect are similar. FIG. 16 is a schematic structural diagram of Embodiment 2 of a source controller according to the present invention. The source controller 160 provided in this embodiment includes a receiver 1601, a transmitter 1602, and a processor 1603.

The receiver 1601 is configured to receive a first identifier in an identifier pair sent by a network scheduling device; the identifier pair includes the first identifier and a second identifier, and the second identifier is An identifier sent by the network scheduling device to the network forwarding device, where the first identifier and the second identifier have a matching relationship;

The transmitter 1602 is configured to broadcast second source controller matching information on a control plane of the software-defined network, where the second source controller matching information includes the first identifier and the source-controlled address information;

The receiver 1601 is further configured to receive, by the network forwarding device, a second network that is sent according to address information of the source controller after determining that the first identifier and the second identifier satisfy the matching relationship. Forwarding device matching information, where the second network forwarding device matching information includes the second identifier and address information of the network forwarding device;

The processor 1603 is configured to determine that the second identifier sent by the network forwarding device and the first identifier meet the matching relationship, and establish and forward the network according to address information of the network forwarding device. The connection of the device.

Optionally, the receiver 1601 is further configured to receive first network forwarding device matching information that is broadcast by the network forwarding device on a control plane of the software-defined network, where the first network forwarding device matching information includes a second identifier. And the address information of the network forwarding device;

The processor 1603 is further configured to determine that the first identifier and the second identifier satisfy the matching relationship;

The transmitter 1602 is further configured to send first source controller matching information to the network forwarding device according to the address information of the network forwarding device, where the first source controller matching information includes the first identifier and The address information of the source controller, so that the network forwarding device establishes a connection with the source controller according to a matching relationship between the first identifier and the second identifier and address information of the source control .

Optionally, after the processor 1603 establishes a connection with the network forwarding device, the processor 1603 is further configured to trigger a control right handover to the network forwarding device according to an operating state of the source controller. ;

The transmitter 1602 is further configured to send a release control request request to the network scheduling device. And causing the network scheduling device to send the first identifier to a target controller;

The receiver 1601 is further configured to receive release control right response information sent by the network scheduling device after the target controller establishes a connection with the network forwarding device.

The transmitter 1602 is further configured to determine a target controller, and send the first identifier to the target controller, so that the target controller matches according to the first identifier and the second identifier. Establishing a connection with the network forwarding device;

The receiver 1601 is further configured to receive a notification message that the target controller sent by the target controller successfully establishes a connection with the network forwarding device;

The processor 1603 is further configured to release control of the network forwarding device.

FIG. 17 is a schematic structural diagram of Embodiment 2 of an object controller according to the present invention. The target controller 170 provided in this embodiment includes a receiver 1701, a transmitter 1702, and a processor 1703.

The receiver 1701 is configured to receive a first identifier in an identifier pair sent by a network scheduling device or a source controller, where the identifier pair includes a first identifier and a second identifier, where the second identifier is An identifier sent by the network scheduling device to the network forwarding device, where the first identifier is an identifier sent by the source controller to the network scheduling device, and the first identifier and the second identifier have a match Relationship

The transmitter 1702 is configured to broadcast first target controller matching information on a control plane of the software-defined network, where the first target controller matching information includes the first identifier and address information of the target controller; The receiver 1701 is further configured to receive, by the network forwarding device, a third network that is sent according to the address information of the target controller after determining that the first identifier and the second identifier satisfy the matching relationship. Forwarding device matching information, where the third network forwarding device matching information includes the second identifier and address information of the network forwarding device;

The processor 1703 is configured to determine that the second identifier sent by the network forwarding device and the first identifier meet the matching relationship, and establish and forward the network according to address information of the network forwarding device. The connection of the device.

Optionally, after the processor 1703 establishes a connection with the network forwarding device, the method further includes:

The transmitter 1702 is further configured to send a network success notification message to the network scheduling device, so that the network scheduling device sends a release control right response message to the source controller; or

The transmitter 1702 is further configured to send a networking success notification message to the source controller, so that the source controller releases the control right.

The target controller provided in this embodiment may be used to implement the technical solution of the foregoing method embodiment, and the implementation principle and the technical effect are similar, and the details are not described herein again.

FIG. 18 is a schematic diagram of a networking system based on a software-defined network according to the present invention. The system 180 of the present embodiment includes a network scheduling device 1801, a network forwarding device 1802, a source controller 1803, and a target controller 1804.

During the networking process of the source controller 1803 and the network forwarding device 1802, each device performs the following actions:

The network scheduling device 1801 is configured to generate an identifier pair for networking between the source controller and the network forwarding device, and send the first identifier in the identifier pair to the source controller, where the identifier is Transmitting the second identifier of the pair to the network forwarding device, where the first identifier and the second identifier have a matching relationship;

The network forwarding device 1802 is configured to receive an identifier pair sent by the network scheduling device. a second identifier, the first network forwarding device matching information is broadcasted on a control plane of the software-defined network, where the first network forwarding device matching information includes the second identifier and address information of the network forwarding device, and receiving the The first source controller matching information sent by the source controller according to the address information of the network forwarding device after determining that the first identifier and the second identifier satisfy the matching relationship, the first source control The device matching information includes the first identifier and address information of the source controller, and determining that the first identifier and the second identifier sent by the source controller satisfy the matching relationship, according to the Address information of the source controller, establishing a connection with the source controller;

The source controller 1803 is configured to receive a first identifier in an identifier pair sent by the network scheduling device, and broadcast second source controller matching information on a control plane of the software-defined network, where the second source controller matches The information includes the first identifier and the source controlled address information, and the receiving, by the network forwarding device, after determining that the first identifier and the second identifier satisfy the matching relationship, according to the source control The second network forwarding device matching information sent by the address information of the device includes: the second identifier and the address information of the network forwarding device, and determining, by the network forwarding device, The second identifier and the first identifier satisfy the matching relationship, and establish a connection with the network forwarding device according to the address information of the network forwarding device.

In one implementation in which the source controller 1803 switches to the target controller 1804, the actions of each device are as follows:

The source controller 1803 is further configured to: trigger a control right handover to the network forwarding device according to an operating state of the source controller, send a release control right request message to the network scheduling device, and receive the network scheduling a release control right response message sent by the device after the target controller establishes a connection with the network forwarding device;

The network scheduling device 1801 is further configured to: receive the release control right request information sent by the source controller; wherein, after the source controller and the network forwarding device are successfully networked, the source controller is configured to The network forwarding device has control, and according to the state information of the software-defined network, in the registered controller, the target controller is selected to be networked with the network forwarding device, and the network controller is sent to the target controller. a first identifier, receiving a network success notification message sent by the target controller, and sending release control right response information to the source controller; the target controller 1804 is configured to receive the identifier sent by the network scheduling device Symbol alignment a first identifier, the first target controller matching information is broadcasted on a control plane of the software-defined network, the first target controller matching information including the first identifier and address information of the target controller, a receiving station a third network forwarding device matching information that is sent by the network forwarding device according to the address information of the target controller after determining that the first identifier and the second identifier satisfy the matching relationship, the third network The forwarding device matching information includes the second identifier and the address information of the network forwarding device, and determining that the second identifier sent by the network forwarding device and the first identifier satisfy the matching relationship, according to the Decoding the address information of the network forwarding device, establishing a connection with the network forwarding device, and sending a network success notification message to the network scheduling device, so that the network scheduling device sends a release control right response message to the source controller;

The network forwarding device 1802 is further configured to: receive first target controller matching information that is broadcast by the target controller on a control plane of the software-defined network, where the first target controller matching information includes the first identifier And the address information of the target controller, determining that the first identifier and the second identifier broadcast by the target controller satisfy the matching relationship, according to the address information of the target controller, The target controller sends third network forwarding device matching information, where the third network forwarding device matching information includes the second identifier and address information of the network forwarding device, so that the target controller is configured according to the A matching relationship between the identifier and the second identifier and address information of the network forwarding device establishes a connection with the network forwarding device.

In another implementation in which the source controller 1803 switches to the target controller 1804, the actions of each device are as follows:

The source controller 1803 is further configured to: trigger a control right handover to the network forwarding device according to an operating state of the source controller, determine the target controller, and send the first to the target controller And an identifier, to enable the target controller to establish a connection with the network forwarding device according to a matching relationship between the first identifier and the second identifier, and receive the target controller sent by the target controller And a notification message that successfully establishes a connection with the network forwarding device, releasing control right of the network forwarding device;

The target controller 1804 is configured to receive a first identifier in an identifier pair sent by the source controller, and broadcast, in a control plane of the software-defined network, first target controller matching information, where the first target controller The matching information includes the first identifier and a ground of the target controller And the third network forwarding device matching information that is sent by the network forwarding device according to the address information of the target controller after determining that the first identifier and the second identifier satisfy the matching relationship, The third network forwarding device matching information includes the second identifier and the address information of the network forwarding device, and determining that the second identifier sent by the network forwarding device and the first identifier meet the a matching relationship, establishing a connection with the network forwarding device according to the address information of the network forwarding device, and sending a networking success notification message to the source controller, so that the source controller releases the control right;

One of ordinary skill in the art will appreciate that all or a portion of the steps of implementing the various method embodiments described above can be accomplished by hardware associated with the program instructions. The aforementioned program can be stored in a computer readable storage medium. The program, when executed, performs the steps including the above-described method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

claims

1. A networking method based on software-defined network, characterized by including: a network scheduling device generating an identifier pair for networking between a source controller and a network forwarding device;

The network scheduling device sends the first identifier in the identifier pair to the source controller, and sends the second identifier in the identifier pair to the network forwarding device, and the first identifier and the The second identifier has a matching relationship, so that the source controller and the network forwarding device perform networking according to the matching relationship between the first identifier and the second identifier.

2. The method according to claim 1, characterized in that, the network scheduling device sends the first identifier in the identifier pair to the source controller, and sends the second identifier in the identifier pair to the source controller. After being sent to the network forwarding device, it also includes:

The network scheduling device receives the control right release request information sent by the source controller; wherein, after the source controller and the network forwarding device are successfully networked, the source controller has control over the network forwarding device. right;

The network scheduling device selects a target controller among the registered controllers to form a network with the network forwarding device according to the status information of the software-defined network;

The network scheduling device sends the first identifier to the target controller, so that the target controller and the network forwarding device perform operations based on the matching relationship between the first identifier and the second identifier. networking;

The network scheduling device receives the networking success notification message sent by the target controller, and sends a control right release response message to the source controller.

3. The method according to claim 1 or 2, characterized in that, before the network scheduling device generates an identifier pair for networking between the network forwarding device and the source controller, it further includes: the network scheduling device receives The identifier request information sent by the network forwarding device, the identifier request information includes the identification of the network forwarding device;

The network scheduling device determines that the network forwarding device has passed the authentication based on the identification of the network forwarding device and the list of legal network forwarding device identifications;

The network scheduling device selects the source controller among the registered controllers to form a network with the network forwarding device according to the status information of the software-defined network.

4. The method according to claim 3, characterized in that, in the network scheduling device Before receiving the identifier request information sent by the network forwarding device, it further includes: the network scheduling device obtains the legal network forwarding device identification list, and the legal network forwarding device identification list is used to authenticate the network forwarding device. ;

The network scheduling device receives the registration request sent by the source controller, and sends a registration success response to the source controller;

The network scheduling device receives the registration request sent by the target controller, and sends a registration success response to the target controller.

5. The method according to any one of claims 1 to 4, characterized in that the network scheduling device generates an identifier pair for networking between the source controller and the network forwarding device, including any of the following:

The network scheduling device generates the identifier pair according to preset matching rules;

6. The method according to any one of claims 1 to 5, characterized in that, the network scheduling device sends the first identifier of the identifier pair to the source controller, and Before the second identifier is sent to the network forwarding device, it also includes:

The network scheduling device generates a connection address of the network forwarding device, and the connection address belongs to the same network segment as the default address of the source controller;

The network scheduling device sends the second identifier in the pair of identifiers to the network forwarding device, including:

The network scheduling device sends the connection address of the network forwarding device and the second identifier of the pair of identifiers to the network forwarding device.

7. The method according to claim 6, wherein the method further includes: the network forwarding device receiving the second identifier sent by the network scheduling device, and broadcasting the second identifier on the control plane of the software-defined network. A network forwarding device matching information, the first network forwarding device matching information includes the second identifier and the address information of the network forwarding device, receiving the source controller determines the first identifier and the After the second identifier satisfies the matching relationship, the first source controller matching information is sent according to the address information of the network forwarding device, and the first source controller matching information includes the first identifier and the source The address information of the controller, determining that the first identifier and the second identifier sent by the source controller satisfy the matching relationship, and establishing a relationship with the source controller according to the address information of the source controller company pick up; or

The source controller receives the first identifier sent by the network scheduling device, and broadcasts second source controller matching information on the control plane of the software-defined network, where the second source controller matching information includes the first identifier and the address information of the source controller, receiving the information sent by the network forwarding device according to the address information of the source controller after determining that the first identifier and the second identifier satisfy the matching relationship. Second network forwarding device matching information, the second network forwarding device matching information includes the second identifier and the address information of the network forwarding device, and it is determined that the second identifier sent by the network forwarding device is the same as the second identifier sent by the network forwarding device. The first identifier satisfies the matching relationship, and a connection with the network forwarding device is established based on the address information of the network forwarding device.

8. A networking method based on software-defined network, characterized in that it includes: the network forwarding device receives the second identifier in the identifier pair sent by the network scheduling device; the identifier pair includes the first identifier and the The second identifier, the first identifier is an identifier sent by the network scheduling device to the source controller, and the first identifier and the second identifier have a matching relationship;

The network forwarding device broadcasts the first network forwarding device matching information on the control plane of the software-defined network, and the first network forwarding device matching information includes the second identifier and the address information of the network forwarding device;

The network forwarding device receives the first source controller match sent by the source controller according to the address information of the network forwarding device after determining that the first identifier and the second identifier satisfy the matching relationship. Information, the first source controller matching information includes the first identifier and the address information of the source controller;

The network forwarding device determines that the first identifier and the second identifier sent by the source controller satisfy the matching relationship, and establishes a connection with the source controller according to the address information of the source controller. connect.

9. The method according to claim 8, further comprising:

The network forwarding device receives second source controller matching information broadcast by the source controller in the control plane of the software-defined network, where the second source controller matching information includes the first identifier and the source Controller’s address information;

The network forwarding device determines that the first identifier and the second identifier satisfy the matching relationship: sending second network forwarding device matching information to the source controller according to the address information of the source controller, where the second network forwarding device matching information includes the second identifier and the network forwarding device The address information, so that the source controller establishes a connection with the network forwarding device according to the matching relationship between the first identifier and the second identifier and the address information of the network forwarding device.

10. The method according to claim 8 or 9, characterized in that, before the network forwarding device receives the second identifier in the pair of identifiers sent by the network scheduling device, it further includes: the network forwarding device sends the The network scheduling device sends identifier request information, and the identifier request information includes the identification of the network forwarding device, so that the network scheduling device authenticates the network forwarding device.

11. The method according to any one of claims 8 to 10, characterized in that, after the source controller triggers the switching of control rights of the network forwarding device according to the working state of the source controller, The source controller sends a release control right request message to the network scheduling device. Under the condition that the network scheduling device sends the first identifier to the target controller, after the network forwarding device establishes a connection with the source controller. , Also includes:

The network forwarding device receives first target controller matching information broadcast by the target controller on the control plane of the software-defined network, where the first target controller matching information includes the first identifier and the target. Controller’s address information;

The network forwarding device determines that the first identifier and the second identifier broadcast by the target controller satisfy the matching relationship;

The network forwarding device sends third network forwarding device matching information to the target controller according to the address information of the target controller, where the third network forwarding device matching information includes the second identifier and the network Forward the address information of the device, so that the target controller establishes a connection with the network forwarding device according to the matching relationship between the first identifier and the second identifier and the address information of the network forwarding device.

12. The method according to claim 11, wherein the address information of the target controller includes a default address of the target controller;

The address information of the network forwarding device includes a default address of the network forwarding device or a connection address assigned by the network scheduling device to the network forwarding device, and the connection address is the same as The default address of the source controller belongs to the same network segment.

13. A networking method based on software-defined network, characterized by including: the source controller receiving the first identifier in a pair of identifiers sent by the network scheduling device; the identifier pair includes the first identifier and a second identifier, where the second identifier is an identifier sent by the network scheduling device to the network forwarding device, where the first identifier and the second identifier have a matching relationship;

The source controller broadcasts second source controller matching information on the control plane of the software-defined network, and the second source controller matching information includes the first identifier and the address of the source control.

I Ήfrom, .,

The source controller receives the second network forwarding device match sent by the network forwarding device according to the address information of the source controller after determining that the first identifier and the second identifier satisfy the matching relationship. Information, the second network forwarding device matching information includes the second identifier and the address information of the network forwarding device;

The source controller determines that the second identifier sent by the network forwarding device and the first identifier satisfy the matching relationship, and establishes a connection with the network forwarding device according to the address information of the network forwarding device. connect.

14. The method according to claim 13, further comprising:

The source controller receives first network forwarding device matching information broadcast by the network forwarding device in the control plane of the software-defined network, where the first network forwarding device matching information includes a second identifier and the network forwarding device address information;

The source controller sends first source controller matching information to the network forwarding device according to the address information of the network forwarding device, where the first source controller matching information includes the first identifier and the source The address information of the controller, so that the network forwarding device establishes a connection with the source controller based on the matching relationship between the first identifier and the second identifier and the address information of the source control.

15. The method according to claim 13 or 14, characterized in that, after the source controller establishes a connection with the network forwarding device, it further includes:

The source controller triggers the network forwarding device according to the working status of the source controller. Switch control of the device;

The source controller sends a release control request message to the network scheduling device, so that the network scheduling device sends the first identifier to the target controller;

The source controller receives the control right release response information sent by the network scheduling device after the target controller establishes a connection with the network forwarding device.

16. The method according to claim 13 or 14, characterized in that, after the source controller establishes a connection with the network forwarding device, it further includes:

The source controller triggers the switching of control rights of the network forwarding device according to the working status of the source controller;

The source controller determines the target controller, and sends the first identifier to the target controller, so that the target controller establishes a relationship with the target controller based on the matching relationship between the first identifier and the second identifier. The connection of the network forwarding device;

The source controller receives a notification message sent by the target controller that the target controller successfully establishes a connection with the network forwarding device;

The source controller releases control of the network forwarding device.

17. The method according to claim 15 or 16, characterized in that the address information of the target controller includes the default address of the target controller;

The address information of the network forwarding device includes the default address of the network forwarding device or the connection address assigned by the network scheduling device to the network forwarding device, and the connection address and the default address of the source controller belong to the same network. part.

18. A networking method based on software-defined network, characterized in that it includes: the target controller receives the first identifier in a pair of identifiers sent by the network scheduling device or the source controller, the identifier pair includes the first identifier The identifier and the second identifier, the second identifier is the identifier sent by the network scheduling device to the network forwarding device, the first identifier is the identifier sent by the source controller to the network scheduling device, The first identifier and the second identifier have a matching relationship;

The target controller broadcasts first target controller matching information on the control plane of the software-defined network, where the first target controller matching information includes the first identifier and the address information of the target controller; The target controller receives the third network forwarding device matching sent by the network forwarding device according to the address information of the target controller after determining that the first identifier and the second identifier satisfy the matching relationship. Information, the third network forwarding device matching information includes the second identifier and the address information of the network forwarding device;

The target controller determines that the second identifier sent by the network forwarding device and the first identifier satisfy the matching relationship, and establishes a connection with the network forwarding device according to the address information of the network forwarding device. connect.

19. The method according to claim 18, characterized in that, after the target controller establishes a connection with the network forwarding device, it further includes:

The target controller sends a networking success notification message to the network scheduling device, so that the network scheduling device sends a control right release response message to the source controller; or

The target controller sends a networking success notification message to the source controller, so that the source controller releases control rights.

20. The method according to claim 18 or 19, characterized in that the address information of the target controller includes the default address of the target controller;

21. A network scheduling device, characterized by: including:

A generation module, used to generate an identifier pair for networking between the source controller and the network forwarding device;

An identifier sending module, configured to send the first identifier in the identifier pair to the source controller, and send the second identifier in the identifier pair to the network forwarding device, the first identifier and The second identifier has a matching relationship, so that the source controller and the network forwarding device perform networking according to the matching relationship between the first identifier and the second identifier.

22. The network scheduling device according to claim 21, further comprising: a receiving module, configured to send the first identifier in the identifier pair to the source controller in the identifier sending module, After sending the second identifier in the pair of identifiers to the network forwarding device, receiving the control right release request information sent by the source controller; wherein, after the source controller and the network forwarding device are successfully networked , the source controller transmits data to the network forwarding device have control;

A selection module, configured to select a target controller among the registered controllers to form a network with the network forwarding device according to the status information of the software-defined network;

The identifier sending module is also configured to send the first identifier to the target controller, so that the target controller and the network forwarding device use the first identifier and the second identifier to Networking is carried out based on the matching relationship between symbols;

The receiving module is also configured to receive a networking success notification message sent by the target controller, and send a control right release response message to the source controller.

23. The network scheduling device according to claim 21 or 22, wherein the receiving module is further configured to: before the generating module generates an identifier pair for networking between the network forwarding device and the source controller. , receiving the identifier request information sent by the network forwarding device, where the identifier request information includes the identification of the network forwarding device;

It also includes: an authentication module, configured to determine that the network forwarding device has passed the authentication based on the identification of the network forwarding device and the list of legal network forwarding device identifications;

The selection module is further configured to, according to the status information of the software-defined network, select the source controller and the network forwarding device among the registered controllers for networking.

24. The network scheduling device according to claim 23, characterized in that,

The network forwarding device receives the second identifier sent by the network scheduling device, and broadcasts first network forwarding device matching information on the control plane of the software-defined network, where the first network forwarding device matching information includes the second The identifier and the address information of the network forwarding device are sent by the receiving source controller according to the address information of the network forwarding device after determining that the first identifier and the second identifier satisfy the matching relationship. The first source controller matching information, the first source controller matching information includes the first identifier and the address information of the source controller, it is determined that the first identifier sent by the source controller is consistent with The second identifier satisfies the matching relationship, and a connection with the source controller is established based on the address information of the source controller; or

The source controller receives the first identifier sent by the network scheduling device, and broadcasts second source controller matching information on the control plane of the software-defined network, where the second source controller matching information includes the first identifier and the source-controlled address information, after the receiving network forwarding device determines that the first identifier and the second identifier satisfy the matching relationship, according to the The second network forwarding device matching information sent by the address information of the source controller, the second network forwarding device matching information includes the second identifier and the address information of the network forwarding device, determining the network forwarding device The sent second identifier and the first identifier satisfy the matching relationship, and a connection with the network forwarding device is established according to the address information of the network forwarding device.

25. A network forwarding device, characterized by including:

A receiving module, configured to receive the second identifier in the identifier pair sent by the network scheduling device; the identifier pair includes a first identifier and the second identifier, and the first identifier is the network scheduling device. An identifier sent by the device to the source controller, where the first identifier and the second identifier have a matching relationship;

A broadcast module, configured to broadcast the first network forwarding device matching information on the control plane of the software-defined network, where the first network forwarding device matching information includes the second identifier and the address information of the network forwarding device;

The receiving module is also configured to receive the first source sent by the source controller according to the address information of the network forwarding device after determining that the first identifier and the second identifier satisfy the matching relationship. Controller matching information, the first source controller matching information includes the first identifier and address information of the source controller;

A processing module, configured to determine that the first identifier and the second identifier sent by the source controller satisfy the matching relationship, and establish a connection with the source controller according to the address information of the source controller. connect.

26. The network forwarding device according to claim 25, wherein the receiving module is further configured to receive the second source controller matching information broadcast by the source controller in the control plane of the software-defined network, The second source controller matching information includes the first identifier and address information of the source controller;

The processing module is further configured to determine that the first identifier and the second identifier satisfy the matching relationship, and send a second network forwarding device to the source controller according to the address information of the source controller. Matching information, the second network forwarding device matching information includes the second identifier and the address information of the network forwarding device, so that the source controller performs the processing according to the first identifier and the second identifier The matching relationship and the address information of the network forwarding device establish a connection with the network forwarding device.

27. The network forwarding device according to claim 25 or 26, characterized in that, the receiving module is further configured to: trigger the network forwarding device to the network forwarding device according to the working state of the source controller according to the source controller. To switch control rights, the source controller sends a release control right request message to the network scheduling device, and under the condition that the network scheduling device sends the first identifier to the target controller, the processing module establishes the connection with the After the source controller is connected, the network forwarding device receives the first target controller matching information broadcast by the target controller on the control plane of the software-defined network, and the first target controller matching information includes the first target controller matching information. an identifier and address information of the target controller;

The processing module is also configured to determine that the first identifier and the second identifier broadcast by the target controller satisfy the matching relationship;

It also includes a sending module, configured to send third network forwarding device matching information to the target controller according to the address information of the target controller, where the third network forwarding device matching information includes the second identifier and The address information of the network forwarding device, so that the target controller establishes a communication with the network forwarding device based on the matching relationship between the first identifier and the second identifier and the address information of the network forwarding device. Connection.

28. A controller, the controller being a source controller, characterized in that it includes: a receiving module, configured to receive the first identifier in a pair of identifiers sent by a network scheduling device; the identifier pair includes all The first identifier and the second identifier, the second identifier is an identifier sent by the network scheduling device to the network forwarding device, and the first identifier and the second identifier have a matching relationship;

A broadcast module, configured to broadcast second source controller matching information on the control plane of the software-defined network, where the second source controller matching information includes the first identifier and the address of the source control.

I Ήfrom, .,

The receiving module is also configured to receive a second network message sent by the network forwarding device according to the address information of the source controller after determining that the first identifier and the second identifier satisfy the matching relationship. Forwarding device matching information, the second network forwarding device matching information includes the second identifier and address information of the network forwarding device;

A processing module configured to determine that the second identifier sent by the network forwarding device and the first identifier satisfy the matching relationship, and establish a connection with the network forwarding device according to the address information of the network forwarding device. connect.

29. The controller according to claim 28, characterized in that,

The receiving module is further configured to receive first network forwarding device matching information broadcast by the network forwarding device in the control plane of the software-defined network, where the first network forwarding device matching information includes a second identifier and the The address information of the network forwarding device;

The processing module is also used to determine that the first identifier and the second identifier satisfy the matching relationship;

It also includes: a first sending module, configured to send first source controller matching information to the network forwarding device according to the address information of the network forwarding device, where the first source controller matching information includes the first identification identifier and the address information of the source controller, so that the network forwarding device establishes a connection with the source controller based on the matching relationship between the first identifier and the second identifier and the address information of the source control. Connection.

30. The controller according to claim 28 or 29, further comprising: a first switching module, configured to: after the processing module establishes a connection with the network forwarding device, according to the source controller The working status of the network forwarding device triggers the switching of control rights of the network forwarding device;

A second sending module, configured to send a release control request message to the network scheduling device, so that the network scheduling device sends the first identifier to the target controller;

The receiving module is also configured to receive control right release response information sent by the network scheduling device after the target controller establishes a connection with the network forwarding device.

31. The controller according to claim 28 or 29, further comprising: a second switching module, configured to: after the processing module establishes a connection with the network forwarding device, according to the source controller The working status of the network forwarding device triggers the switching of control rights of the network forwarding device;

The third sending module is used to determine the target controller, and sends the first identifier to the target controller, so that the target controller determines the target controller according to the matching relationship between the first identifier and the second identifier. Establishing a connection with the network forwarding device;

The receiving module is also configured to receive a notification message sent by the target controller that the connection between the target controller and the network forwarding device is successfully established;

The processing module is also configured to release control over the network forwarding device.

32. A controller, the controller is a target controller, characterized in that it includes: A receiving module, configured to receive the first identifier in an identifier pair sent by the network scheduling device or the source controller, where the identifier pair includes a first identifier and a second identifier, and the second identifier is the An identifier sent by the network scheduling device to the network forwarding device, the first identifier is an identifier sent by the source controller to the network scheduling device, and the first identifier and the second identifier have a matching relationship;

A broadcast module, configured to broadcast the first target controller matching information on the control plane of the software-defined network, where the first target controller matching information includes the first identifier and the address information of the target controller;

The receiving module is also configured to receive a third network message sent by the network forwarding device according to the address information of the target controller after determining that the first identifier and the second identifier satisfy the matching relationship. Forwarding device matching information, the third network forwarding device matching information includes the second identifier and address information of the network forwarding device;

33. The controller according to claim 32, further comprising: a sending module, configured to: after the processing module establishes a connection with the network forwarding device,

Send a networking success notification message to the network scheduling device, so that the network scheduling device sends a control right release response message to the source controller; or

Send a networking success notification message to the source controller so that the source controller releases control

34. A networking system based on software-defined network, characterized by including: a network scheduling device, a network forwarding device, and a source controller, wherein:

The network scheduling device is configured to generate an identifier pair for networking between the source controller and the network forwarding device; send the first identifier in the identifier pair to the source controller, and send the identifier pair to the source controller. The second identifier in is sent to the network forwarding device, and the first identifier and the second identifier have a matching relationship;

The network forwarding device is configured to receive the second identifier of the identifier pair sent by the network scheduling device, and broadcast the first network forwarding device matching information on the control plane of the software-defined network, where the first network forwarding device matching information includes the second identifier and the network forwarding device address information, receiving the first source controller matching information sent by the source controller according to the address information of the network forwarding device after determining that the first identifier and the second identifier satisfy the matching relationship. , the first source controller matching information includes the first identifier and the address information of the source controller, and it is determined that the first identifier and the second identifier sent by the source controller satisfy the requirements. According to the matching relationship, establish a connection with the source controller according to the address information of the source controller;

The source controller is configured to receive the first identifier of the pair of identifiers sent by the network scheduling device, and broadcast second source controller matching information on the control plane of the software-defined network, where the second source controller matching information includes The first identifier and the address information of the source control are received by the network forwarding device according to the source controller after determining that the first identifier and the second identifier satisfy the matching relationship. The second network forwarding device matching information sent by the address information, the second network forwarding device matching information includes the second identifier and the address information of the network forwarding device, determining the second network forwarding device sent by the network forwarding device. The second identifier and the first identifier satisfy the matching relationship, and a connection with the network forwarding device is established according to the address information of the network forwarding device.

35. The system according to claim 34, characterized in that, the system further includes: a target controller;

The source controller is also configured to: trigger the switching of control rights to the network forwarding device according to the working status of the source controller, send a release control request message to the network scheduling device, and receive the network scheduling device. After the target controller establishes a connection with the network forwarding device, send a release control response message;

The network scheduling device is also configured to receive control right release request information sent by the source controller; wherein, after the source controller and the network forwarding device are successfully networked, the source controller The forwarding device has control rights, and according to the status information of the software-defined network, among the registered controllers, selects the target controller to network with the network forwarding device, and sends the first to the target controller. An identifier, receiving the networking success notification message sent by the target controller, and sending a release control response message to the source controller;

The target controller is configured to receive the first identifier of the pair of identifiers sent by the network scheduling device, broadcast the first target controller matching information on the control plane of the software-defined network, and the first target controller matches The information includes the first identifier and the location of the target controller. address information, receiving the third network forwarding device matching information sent by the network forwarding device according to the address information of the target controller after determining that the first identifier and the second identifier satisfy the matching relationship, The third network forwarding device matching information includes the second identifier and the address information of the network forwarding device, and it is determined that the second identifier sent by the network forwarding device and the first identifier satisfy the requirement matching relationship, establish a connection with the network forwarding device according to the address information of the network forwarding device, and send a networking success notification message to the network scheduling device, so that the network scheduling device sends a release control to the source controller Right response message;

The network forwarding device is further configured to: receive first target controller matching information broadcast by the target controller on the control plane of the software-defined network, where the first target controller matching information includes the first identifier and the address information of the target controller, determining that the first identifier and the second identifier broadcast by the target controller satisfy the matching relationship, and based on the address information of the target controller, to the The target controller sends third network forwarding device matching information, where the third network forwarding device matching information includes the second identifier and the address information of the network forwarding device, so that the target controller responds according to the first The matching relationship between the identifier and the second identifier and the address information of the network forwarding device establishes a connection with the network forwarding device.

36. The system according to claim 34, characterized in that, the system further includes: a target controller;

The source controller is also configured to trigger a switching of control rights to the network forwarding device according to the working status of the source controller, determine the target controller, and send the first identification to the target controller. identifier, so that the target controller establishes a connection with the network forwarding device according to the matching relationship between the first identifier and the second identifier, and receives the link between the target controller and the network forwarding device sent by the target controller. The network forwarding device sends a notification message that the connection is successfully established, and releases control of the network forwarding device;

The target controller is configured to receive the first identifier of the pair of identifiers sent by the source controller, and broadcast the first target controller matching information on the control plane of the software-defined network, where the first target controller matching information including the first identifier and the address information of the target controller, and receiving the network forwarding device according to the target control after determining that the first identifier and the second identifier satisfy the matching relationship. The third network forwarding device that sends the address information of the server Matching information is prepared, the third network forwarding device matching information includes the second identifier and the address information of the network forwarding device, and it is determined that the second identifier sent by the network forwarding device is the same as the first identification. If the symbol satisfies the matching relationship, establish a connection with the network forwarding device according to the address information of the network forwarding device, and send a networking success notification message to the source controller so that the source controller releases control rights. ;