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Switch configuration recovery method in SDN (Software Defined Networking)

A recovery method and switch technology, applied in the field of communications, can solve problems such as long time consumption, and achieve the effects of strong practicability, reduction of transmission delay, and rapid recovery of configuration information

Active Publication Date: 2016-09-07
SHANDONG INSPUR SCI RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the common method is to restore the switch memory data through the configuration file. However, the execution of each configuration command needs to go through the process of command parsing, parameter validity checking, data saving, etc., so it will take a long time.

Method used

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  • Switch configuration recovery method in SDN (Software Defined Networking)
  • Switch configuration recovery method in SDN (Software Defined Networking)

Examples

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specific example

[0023] as attached figure 1 As shown, multiple switches are managed under the SDN controller, including the central switch S, switch M, and switch N, and the central switch and the switch are interconnected to form a transmission link. The central switch is S to save configuration information for switches M and N .

[0024] as attached figure 2 As shown, the specific implementation steps are:

[0025] The switch M transmits the updated configuration information entry to the central switch S at the end of each time slot T, and the switch S stores the received data in the non-volatile memory according to the standard protocol format, wherein;

[0026] The configuration information sent by switch M includes its port information and flow table information;

[0027] Switch S every The data saved for switch M will be cleared once to prevent the buffer from overflowing due to the change of its own link topology and the switch M being no longer connected but continuing to save c...

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Abstract

The invention discloses a switch configuration recovery method in SDN. The method is realized by that in a physical topology system, each OpenFlow switch is connected with one central switch, and the central switch backs received configuration information up in a nonvolatile memory according to a standard protocol format; and when certain switch is restarted due to fault, the connected central switch is asked for data information which matches the switch, and data is recovered to a memory. Compared with the prior art, the configuration information of the switches are backed up in the near central switch, transmission time delay is reduced, the configuration information of the switches can be recovered rapidly, the problem in recovering configuration of memory information of the switches in real time in the SDN framework is solved, and the method of the invention is highly practical and easy to popularize.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a highly practical and SDN network switch configuration recovery method. Background technique [0002] With the development of OpenFlow-based software-defined networking (Software Defined Networking, SDN), network virtualization technology adopts a centralized control method, which separates the control plane and data plane of network equipment, and facilitates flexible scheduling of resources. Among them, the SDN controller is responsible for the topology management of the network and configures the forwarding flow table; the OpenFlow switch only needs to complete the data packet forwarding work according to the command of the SDN controller. [0003] Multiple switches can be managed under the SDN controller. If a switch fails and the transmission on the link is interrupted, in order to ensure the validity of the issued flow table and not delay the forwarding of subsequent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/939H04L12/947H04L12/741H04L45/74
CPCH04L45/745H04L49/252H04L49/557
Inventor 熊琦郑亮于治楼
Owner SHANDONG INSPUR SCI RES INST CO LTD
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