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A method for reconfiguring data packet paths in software-defined networks

A software-defined network and data packet technology, applied in data exchange networks, electrical components, digital transmission systems, etc., can solve problems such as inability to apply software-defined network topology, and achieve the effect of low computational burden

Active Publication Date: 2020-08-04
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 structural characteristics, so it cannot be applied to all software-defined network topologies

Method used

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  • A method for reconfiguring data packet paths in software-defined networks
  • A method for reconfiguring data packet paths in software-defined networks
  • A method for reconfiguring data packet paths in software-defined networks

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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 reconfiguration method in a software-defined network. In the network initialization phase, the controller assigns an ID to each switch / router according to the network scale. When the sender generates a data packet, the relevant data flow information is sent to the controller, and the controller decides the path reconstruction method to be used and the field allocation of the newly added data packet header, and feeds back the information to the sender. When the switch / router forwards the data packet, it performs corresponding operations according to the newly added packet header, and records path-related information in the packet. Finally, the management server in the network reconstructs the transmission path of the data packet according to the path-related information in the received data packet. The present invention has no special requirements on the types of software-defined network topology, has the characteristics of low calculation overhead of switches / routers, and can accurately reconstruct the transmission path of data packets under the condition of network failure and congestion, which greatly facilitates the Defines the management and troubleshooting of the 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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Patent Type & Authority Patents(China)
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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