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Method and system for sending information of controller to OpenFlow through DHCP (Dynamic Host Configuration Protocol)

An openflow protocol and DHCP message technology, which is applied in the field of notifying OpenFlow controller information through DHCP, and the configuration of OpenFlow switches, which can solve the problems of complex process and complicated configuration process, and achieve the effect of improving the speed and simplifying the process of configuring the controller.

Active Publication Date: 2019-03-26
SUZHOU CENTEC COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this connection method needs to cooperate with TFTP and other services, and the process is more complicated.
[0005] Therefore, the controller connection method or configuration process in the prior art as mentioned above is cumbersome and complicated, or there are many restrictions on the switch, and how to simplify the configuration process of the switch connecting the controller is an important link to improve the working efficiency of the switch , it is urgent to find a more optimized solution

Method used

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  • Method and system for sending information of controller to OpenFlow through DHCP (Dynamic Host Configuration Protocol)
  • Method and system for sending information of controller to OpenFlow through DHCP (Dynamic Host Configuration Protocol)
  • Method and system for sending information of controller to OpenFlow through DHCP (Dynamic Host Configuration Protocol)

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Embodiment Construction

[0032] In view of the deficiencies in the prior art, the inventor of this case was able to propose the technical solution of the present invention after long-term research and extensive practice. The technical solution, its implementation process and principle will be further explained as follows.

[0033] In the embodiment of the present invention, by extending a newly defined DHCP option, the switch obtains the information of the controller when the switch obtains the network information (IP, gateway, etc.) through the DHCP, so as to configure and connect the controller information. Its methods include:

[0034] The option field of DHCP is extended, and the extension field is at least used to carry information such as IP, port number, protocol information and connection mode of the controller, and the number of controllers contained in the extension field can be one or more.

[0035] When the OpenFlow switch exchanges packets with the DHCP server, it configures and connects...

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Abstract

The invention discloses a method for sending information of a controller to an OpenFlow through a DHCP. The method mainly comprises steps of: expanding the option field of the DHCP, wherein the extended field is at least used to carry the controller information; and configuring the connection by obtaining the controller information carried in the DHCP extended field, when the OpenFlow switch is exchanged with the DHCP server. Correspondingly, the invention also provides a system for sending information of the controller to the OpenFlow through the DHCP. According to the method and the system for sending information of the controller to the OpenFlow through the DHCP, the technical scheme can simplify the process of configuring the controller information to the OpenFlow switch, and improvesthe speed and the efficiency of the connection of the controller.

Description

technical field [0001] The invention relates to an OpenFlow switch configuration method, in particular to a method and a system for notifying OpenFlow controller information through DHCP, and belongs to the technical field of network communication. Background technique [0002] During the working process of the OpenFlow switch, the flow table and group table used for forwarding, and the Meter used for speed limit are all delivered by the controller, so it is very important to connect to the controller as soon as possible. If you want to connect to the controller, the switch needs to know the IP of the controller, the listening port number, and preferably also the version number of the OpenFlow protocol supported by the controller (the major version numbers of the currently released OpenFlow protocol include 1.0 / 1.1 / 1.2 / 1.3 / 1.4 / 1.5). [0003] A controller connection method commonly used in the prior art is: configure the controller information of the switch through various ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/931H04L12/933H04L12/935H04L29/12H04L49/111
CPCH04L49/10H04L49/3009H04L49/45H04L61/5014
Inventor 刘敬一杨锐金利
Owner SUZHOU CENTEC COMM CO LTD