SDN controller distribution method, SDN controller multicast group and network system

A distribution method and controller technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve problems such as lack of flexibility, heavy load on the main controller, and no consideration of link conditions.

Inactive Publication Date: 2017-04-05
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, static configuration needs to introduce a lot of manual operations, lacks flexibility, and cannot automatically adapt to network changes; the method specified by the master controller will cause a huge load on the master controller, may cause link congestion in the master

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  • SDN controller distribution method, SDN controller multicast group and network system
  • SDN controller distribution method, SDN controller multicast group and network system
  • SDN controller distribution method, SDN controller multicast group and network system

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Embodiment Construction

[0027] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated.

[0028] figure 1 A flowchart showing a method for allocating SDN controllers according to an embodiment of the present invention. like figure 1 As shown, the method mainly includes:

[0029] Step 100, the SDN controller multicast group receives the controller request sent by the OpenFlow switch, and sends the controller request to the controllers in the SDN controller multicast group, wherein the SDN controller multicast group uses the way to form.

[0030] Step 102, the controllers in the SDN controller multicast group respond to the controller request according to their own load values.

[0031] In one embodiment, the controller in the SDN controller multicast group responds to the controller request according to its own load value, including the following situations:

[0032] Case 1: If the ...

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Abstract

The present invention discloses an SDN controller distribution method, an SDN controller multicast group and a network system. The method comprises: the SDN control multicast group receives a controller request sent by an OpenFlow switch and sends the controller request to the controller in the SDN controller multicast group, wherein the SDN controller multicast group is formed in the controller cluster mode; the controller in the SDN controller multicast group responds to the controller request according to the load value itself; and the OpenFlow switch selects the controller according to the response condition of the controller in the SDN controller multicast and the load value. The SDN controller distribution method, the SDN controller multicast group and the network system are configured to add controllers into the same multicast group in the cluster mode, and the controller automatic distribution realized based on the multicast mechanism can comprehensively consider the link condition and the load condition when the switch registers the controllers so as to realize the automatic distribution of the cluster controllers which is in zero contact with operation and maintenance staffs.

Description

technical field [0001] The invention relates to the field of SDN networks, in particular to an SDN controller allocation method, an SDN controller multicast group and a network system. Background technique [0002] The controller is the core of the SDN (Software Defined Network, software-defined network) network, responsible for maintaining the status of the global network and calculating routing. The network scale that a single controller can support is limited. The transmission distance between switches is too long, resulting in high network delay and poor performance. Using distributed technology to build a controller cluster, and multiple controllers to manage and control the underlying network collaboratively by region can improve network performance, reliability and scalability. [0003] In the prior art, control optimization of multi-controllers is realized through manual static configuration of switches. In the controller cluster of the master control mode, the mas...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L29/12H04L12/761H04L45/16
CPCH04L49/201H04L61/5014H04L67/1001
Inventor 黄志兰陈天陈楠樊勇兵赖培源肖慧丁圣勇何晓武刘艺
Owner CHINA TELECOM CORP LTD
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