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Service flow aware system and method combining flow detection and package detection in SDN

A perception system and packet detection technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve problems such as changes in business perception systems, inability to perform flexible perception, and insufficient flexibility

Active Publication Date: 2013-09-25
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (2) Not flexible enough to perceive services according to the actual needs in the SDN network
For example, when it is necessary to perceive a certain type of business with special characteristics, when the characteristics of this type of business are new, the existing methods cannot be used to perform flexible perception, and it is necessary to make major changes to the existing business perception system
[0008] (3) It is impossible to perceive the services in the SDN network from multiple angles, and it is impossible to conveniently expand the new service perception requirements in the SDN network

Method used

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  • Service flow aware system and method combining flow detection and package detection in SDN
  • Service flow aware system and method combining flow detection and package detection in SDN

Examples

Experimental program
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Effect test

Embodiment 1

[0044] See figure 1 As shown, the service flow sensing system that combines flow detection and packet detection in the SDN network includes a controller 2, a controller southbound interface 1, a controller northbound interface 3, a flow detection module 4, and a packet detection module 5. The controller 2 includes a southbound interface. The controller 2 integrates the flow detection module 4 with OpenFlow technology and the packet detection module 5 with DPI technology, and the controller 2 uses the OpenFlow protocol for the protocol of the southbound interface 1 and the OpenFlow protocol is required. Extend to support real-time business flow sampling at random, timed or fixed number of packets.

Embodiment 2

[0046] See figure 2 As shown, the service flow sensing system that combines flow detection and packet detection in an SDN network includes a controller 2, a controller southbound interface 1, a controller northbound interface 3, a flow detection module 4, a packet detection module 5, a packet detection server 6, and The first external interface 7, the controller 2 includes a southbound interface module 2a and a northbound interface module 2b. The controller 2 integrates a flow detection module 4 using OpenFlow technology, and the packet detection module 5 using DPI technology is set on the packet detection server 6. Inside, the controller 2 and the packet inspection module 5 communicate with each other through the first external interface 7. The controller southbound interface 1 protocol adopts the OpenFlow protocol. At this time, the OpenFlow protocol needs to be extended to support random, timed or fixed packet number sampling real-time service flow.

Embodiment 3

[0048] See image 3 As shown, a service flow sensing system that combines flow detection and packet detection in an SDN network includes a controller 2, a controller southbound interface 1, a controller northbound interface 3, a flow detection module 4, a packet detection module 5, and a service flow perception server 8. And the second external interface 9, the controller 2 includes a southbound interface module 2a and a northbound interface module 2b. The flow detection module 4 using OpenFlow technology and the packet detection module 5 using DPI technology are both set in the service flow sensing server 8. The controller 2 and the service flow sensing server 8 communicate with each other through a second external interface 9. The controller southbound interface 1 protocol adopts the OpenFlow protocol. At this time, the OpenFlow protocol needs to be extended to support random, timed or fixed packet number sampling real-time service flow.

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Abstract

The invention discloses a service flow aware system and method combining flow detection and package detection in the SDN, and relates to the field of the SDN. The service flow aware method includes the steps that when an initial novel service flow enters the SDN, table items not matched with the novel service flow in an equipment flow table are forwarded, the novel service flow is forwarded to a controller, a flow detection module carries out flow detection, a package detection module carries out package detection to recognize the service type and the service characteristics of the novel service flow, the controller triggers the awareness of a specific service according to the characteristics of the service flow, flow signs, flow statistics and package statistics, for current continuous service flow, the controller samples a real-time service flow, the dynamic variation of the real-time service is discovered through service awareness, and network strategies are adjusted correspondingly. The service flow aware system and method combining flow detection and package detection in the SDN combines the flow detection technology and the package detection technology, expands the southing port of the controller in the SDN, and can completely obtain the states of network flows of different industries and different applications in the current network.

Description

Technical field [0001] The invention relates to the field of SDN (Software Defined Network, software defined network), in particular to a service flow sensing system and method that combines flow detection and packet detection in an SDN network. Background technique [0002] In recent years, SDN (Software Defined Network) has become the focus and hotspot of industry research. Through the separation of control and forwarding, SDN concentrates control functions on the Controller. The southbound interface configuration of the controller in SDN and the security information exchange between the controller and the forwarding device are responsible for the realization of flow forwarding configuration based on Flow-Table (flow table). The core principle is that for any specific service data packet, Some key information contained in the control fields of each layer is extracted as a whole flow identification, and then the controller can schedule resources for these specific flows accordi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/26
CPCH04L43/026H04L43/028H04L43/04H04L43/20
Inventor 魏学勤何炜
Owner FENGHUO COMM SCI & TECH CO LTD
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