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Out-of-band system for SDN networks and control plane communication method

A technology of control system and communication method, applied in the field of SDN network, can solve the problems of high bit error rate, large transmission delay of out-of-band control channel, high cost of out-of-band control channel, etc., achieve low cost and avoid high bit error rate Effect

Active Publication Date: 2017-10-24
臻乐尔科技服务(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present application provides an out-of-band control system for SDN networks to solve the problems existing in the prior art, such as high cost of constructing an out-of-band control channel, large transmission delay and high bit error rate of the out-of-band control channel.

Method used

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  • Out-of-band system for SDN networks and control plane communication method
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  • Out-of-band system for SDN networks and control plane communication method

Examples

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example 1

[0085] Example 1: The SDN controller sends a control plane message to the OpenFlow switch 2.

[0086] In this example, in order to configure the flow table of OpenFlow switch 2, the SDN controller sends a control plane message encapsulated by TCP / IP protocol to out-of-band switch 1, and includes information related to the configuration flow table in the control plane message. information, the destination IP address of the control plane message is set to: the IP address of the OpenFlow switch 2.

[0087] After receiving the control plane message sent by the SDN controller through the uplink port P2, the out-of-band switch 1 first extracts the destination IP address from the control plane message, and then searches the local routing table to find the port corresponding to the destination IP address. is the downlink port P4, then the control plane message is sent to the DWDM device 1 through the P4 port. After receiving the control plane message through the user channel port U2,...

example 2

[0090] Example 2: OpenFlow switch 2 sends a control plane packet to the SDN controller.

[0091] In this example, in order to report locally detected fault information to the SDN controller (for example: report a local port fault), OpenFlow switch 2 sends a control plane message encapsulated by TCP / IP protocol to out-of-band switch 2 through its management port , and include information related to the detected fault in the control plane message, where the destination IP address of the control plane message is set to: the IP address of the SDN controller.

[0092] After the out-of-band switch 2 receives the control plane message sent by the OpenFlow switch 2 through the uplink port P5, it first extracts the destination IP address from the control plane message, and then searches the local routing table to find the port corresponding to the destination IP address is the downlink port P6, then the control plane message is sent to the DWDM device 2 through the P6 port. After the ...

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Abstract

This application discloses an out-of-band system for an SDN networks and a control plane communication method for an SDN network. The system is composed of out-of-band switches, OpenFlow switches corresponding to the out-of-band switches, wavelength division devices in a wavelength division network, and an SDN controller. The out-of-band switches are connected with management ports of the corresponding OpenFlow switches by upper connection ports and are connected with user channel ports provided by OSC modules of the corresponding wavelength division devices by lower connection ports; and the SDN controller is at least connected with an upper connection port of one out-of-band switch. According to the invention, with full utilization of the user channel provided by the OSC optical monitoring channel of the wavelength division network, the user channel and the out-of-band switches form an independent out-of-band control channel, so that the cost is low; and because the fiber is used as a transmission medium, defects of high error rate and large transmission delay because of utilization of the wireless network are overcome.

Description

technical field [0001] The present application relates to SDN network technologies, in particular to an out-of-band control system for SDN networks. The present application also relates to a control plane communication method for an SDN network. Background technique [0002] Software Defined Network (SDN) is an implementation of network virtualization. It is a new type of network architecture developed to solve the bottleneck problem of traditional switching or routing-based network deployment. Its core technology, OpenFlow, uses the The control plane function is separated from the traditional switch, moved into the SDN controller and centralized management, so that the OpenFlow switch only retains the data plane, thereby realizing flexible control of network traffic and making the network more intelligent as a pipeline. [0003] The communication between the SDN controller and the OpenFlow switch usually cannot use the service network of the OpenFlow switch itself, but nee...

Claims

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Application Information

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IPC IPC(8): H04L12/931H04L12/933H04L12/741H04Q11/00H04J14/02H04L45/74
CPCH04J14/0267H04L45/745H04L49/1507H04L49/357H04Q11/0005
Inventor 陈鸣华闫浩陈秀忠吕屹庞俊英
Owner 臻乐尔科技服务(上海)有限公司
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