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SDN connection judging method, device and system

A technology for connection judgment and switching, which is applied in the field of communication, and can solve problems such as inconvenient maintenance and manual configuration of connection relationships

Active Publication Date: 2019-07-23
MAIPU COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, the connection relationship between the SDN controller and the OpenFlow switch needs to be manually configured, which is not easy to maintain when the network structure changes

Method used

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  • SDN connection judging method, device and system
  • SDN connection judging method, device and system
  • SDN connection judging method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The embodiment of this application provides a method for judging SDN connection, which is applied to the above system, refer to figure 2 As shown in , the method includes:

[0034] S101. The OpenFlow switch establishes a control communication channel with the SDN controller to obtain an upstream port of the machine.

[0035] In this application, the port used by the OpenFlow switch to connect to the SDN controller is marked as the "upstream port" of the switch, and the upstream port is the port on the OpenFlow switch that has received the message sent by the SDN controller. The port of the OpenFlow switch connected to the SDN controller may be a direct connection port or a non-direct connection port. After each OpenFlow switch completes the establishment of a control communication channel with the SDN controller, each switch can automatically identify the local "upstream port". At the same time, the port on the OpenFlow switch connected to the upstream ports of other...

Embodiment 2

[0055] The embodiment of this application provides another SDN connection judgment method, which is applied to the above-mentioned system, refer to Image 6 As shown in , the method includes:

[0056] S201. The OpenFlow switch establishes a control communication channel with the SDN controller to obtain an upstream port of the machine.

[0057] This step corresponds to S101.

[0058] refer to Image 6 Shown in is a specific example of a communication system in the embodiment of this application. After switch 1 to switch 5 complete the establishment of control communication channels with the SDN controller, each switch can automatically identify the "upstream port" of the machine, as follows:

[0059] {Switch 1: switch1, upstream port: p1-1}

[0060] {switch2: switch2, upstream port: p2-1}

[0061] {Switch 3: switch3, upstream port: p3-1}

[0062] {Switch 4: switch4, upstream port: p4-1}

[0063] {Switch 5: switch5, upstream port: p5-1}

[0064] S202. The OpenFlow switc...

Embodiment 3

[0133] The embodiment of the present application provides an OpenFlow switch, which is applied to the above method, refer to Figure 7 As shown in, the switch 12 includes:

[0134] The obtaining unit 1201 is configured to establish a control communication channel with the SDN controller to obtain the upstream port of the local machine.

[0135] The sending unit 1202 is configured to send a first advertisement message through an upstream port, where the first advertisement message includes identification information of the OpenFlow switch.

[0136] The receiving unit 1203 is configured to receive a first response message sent by the upstream switch, where the first response message includes identification information of the upstream switch.

[0137] The acquiring unit 1201 is further configured to acquire an upstream neighbor switch record table corresponding to the upstream port according to the identification information of the upstream port and the upstream switch.

[0138...

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Abstract

The present application discloses an SDN connection judging method, device and system, which relate to a communication system and are used for realizing automatic discovery of a channel connection relationship between an SDN controller and an OpenFlow switch. The method includes: the OpenFlow switch obtains the first response message through the upstream port, which includes the identification information of the upstream switch, and obtains the record table of the upstream neighbor switch corresponding to the upstream port, and finally according to the record table of the upstream neighbor switch or receives the first The port that responds to the message determines whether the OpenFlow switch is directly connected to the SDN controller through the upstream port or not. The embodiment of the present application is applied to an SDN network.

Description

technical field [0001] The present application relates to the field of communications, and in particular to a software-defined network (Software Defined Network, SDN) connection judgment method, device and system Background technique [0002] SDN technology separates the control plane from the network equipment, and centralizes the control and management functions of the entire network into the SDN controller. The network equipment focuses on business data forwarding, and gradually standardizes to form an OpenFlow (OpenFlow) switch. The SDN controller and the OpenFlow switch communicate through the OpenFlow protocol. In specific implementation, the SDN controller and the OpenFlow switch can communicate through the OpenFlow protocol through an independent out-of-band network, or use the same communication channel as the service data forwarding ( In-band network) for OpenFlow protocol communication. [0003] In actual networking applications, the choice of in-band network or ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/751H04L45/02
CPCH04L41/12H04L45/02
Inventor 罗向征
Owner MAIPU COMM TECH CO LTD