Data packet path reconstruction method in software defined network

A software-defined network and data packet technology, which is applied to data exchange networks, electrical components, digital transmission systems, etc., can solve problems such as software-defined network topology that cannot be applied, and achieve the effect of low computing burden

Active Publication Date: 2018-06-22
ZHEJIANG UNIV
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Problems solved by technology

The disadvantage of this method is that it requires the network topology to have obvious st

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  • Data packet path reconstruction method in software defined network
  • Data packet path reconstruction method in software defined network
  • Data packet path reconstruction method in software defined network

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] In the present invention, the data packet path reconstruction in the software-defined network involves the initialization phase and the running phase of the software-defined network. The whole process of the method is as follows figure 1 As shown, the specific packet path reconstruction method is as follows: (1) Perform the following steps 1 to 2 during the initialization phase of the software-defined network:

[0031] Step 1: The controller in the software-defined network assigns an ID to each switch / router in the network according to the size of the real network topology, represented by a binary number with an appropriate bit size;

[0032] Step 2: the controller configures a corresponding flow table for the switch / controller in the network, and each line in the flow table corresponds to a switch / router's operation rules for data packets, including data packe...

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Abstract

The invention discloses a data packet path reconstruction method in a software defined network. In a network initialization stage, a controller allocates an ID to each switch/router according to a network size. When a sending end generates a data packet, related data flow information is sent to the controller, and the controller decides a specifically used path reconstruction method and field allocation of a newly added data packet header, and feeds information back to the sending end. When the switches/routers forward the data packet, corresponding operation is executed according to the newlyadded packet header, and path-related information is recorded in the packet. Finally, an administration server in the network reconstructs a transmission path of the data packet according to the path-related information in the received data packet. The method provided by the invention has no special requirements for the category of the software defined network topology, has the characteristic oflow calculation overheads of the switches/routers, can still precisely reconstruct the transmission path of the data packet under the conditions of network failure and congestion, and greatly facilitates administration and failure checking of the software defined network.

Description

technical field [0001] The invention relates to a method for reconstructing a data packet path in a software-defined network, in particular, adding a path characteristic value in a data packet, and updating the path characteristic value during the transmission process of the data packet to record the transmission path of the data packet and in the software-defined network The server side reconstructs the transmission path of the received data packet by decoding the path characteristic value of the received data packet. Background technique [0002] Software Defined Network (SDN, Software Defined Network) is a new network innovation architecture. In software defined network, by separating the control plane of network equipment from the data plane, the flexible control of network traffic can be realized, providing core network and application The innovation provides a good platform. The original intention of software-defined networking is to solve the problem of not being abl...

Claims

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Application Information

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IPC IPC(8): H04L12/751H04L12/801H04L12/24H04L45/02
CPCH04L41/0668H04L41/0803H04L41/12H04L45/02H04L47/12
Inventor 高艺董玮卜佳俊陈纯靖远
Owner ZHEJIANG UNIV
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