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SDN switch flow table control method and device

A control method and control device technology, applied in the network field, can solve problems such as flow table saturation attacks, and achieve the effect of preventing manslaughter

Active Publication Date: 2022-03-29
四川省商投信息技术有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of flow table saturation attack as described in the background technology, and propose a method and device for controlling the flow table of an SDN switch, so as to solve the problem of flow table saturation attack without causing manslaughter

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  • SDN switch flow table control method and device

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Embodiment 1

[0023]Embodiment 1, this embodiment provides a flow table control method for an SDN switch, which is characterized in that the method is applied to an SDN network, and the SDN network includes: at least one controller, at least two switches, including the first switch using the second A type of memory stores the first flow table, and the maximum number of entries in the first flow table is N; the second switch uses the second type of memory to store the second flow table, and the second flow table entries are unlimited; the first flow table Both the second flow table and the second flow table include fields of survival time and data flow.

[0024] Multiple controllers can be used in the SDN network. In this embodiment, at least one of the controllers needs to be used. Of course, for load balancing, multiple controllers can also be used, which is not limited in the present invention.

[0025] The first switch uses the first type of memory to store the first flow table, and the ...

Embodiment 2

[0062] Embodiment 2, this embodiment provides an SDN switch flow table control device, which is characterized in that the device is applied to an SDN network, and the SDN network includes: at least one controller, at least two switches, including the first switch using The first type of memory stores the first flow table, and the maximum number of entries in the first flow table is N; the second switch uses the second type of memory to store the second flow table, and the number of entries in the second flow table is unlimited; Both the first flow table and the second flow table include fields of time to live and data flow.

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Abstract

The invention provides an SDN switch flow table control method and device, the device comprises at least one controller and at least two switches, the first switch uses a first type memory to store a first flow table, and the maximum table item number of the first flow table is N; the second switch uses a second type memory to store a second flow table, and the number of table items of the second flow table is not limited; each of the first flow table and the second flow table comprises a survival time and a data flow field; the items between the two flow tables are adjusted through the survival time and the data traffic, so that the purpose of resisting saturation attacks is achieved.

Description

technical field [0001] The invention belongs to the field of network technology, and in particular relates to a flow table control method and device of an SDN switch. Background technique [0002] Such as figure 1 As shown, SDN (Software-defined networking, software-defined network) is an innovative network architecture that separates control logic and data forwarding. The forwarding plane equipment is automatically controlled by a software-driven controller (Controller), which replaces it with an open software model. Traditionally based on an embedded and inflexible control plane. [0003] OpenFlow is an important technology to realize SDN. The network is mainly composed of a controller (Controller) and a switch: the controller centrally controls the network to realize the functions of the control layer; the switch forwards the data layer. The controller manages the switch through the OpenFlow protocol. The switch has several flow tables (FlowTable), and it only forwards...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/40H04L45/745
CPCH04L63/1441
Inventor 雷雪萍曾麟钧黄亮黄薪楠赵雨欣
Owner 四川省商投信息技术有限责任公司
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