A fast data transmission method based on SDN to avoid conflicts
A data transmission method and a technology for avoiding conflicts, applied in the field of fast data transmission, can solve the problems that real-time information data needs to be processed, without considering that the transmitted data is only a part of the function of the network, etc.
Active Publication Date: 2018-06-15
国网吉林省电力有限公司信息通信公司
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[0004] The purpose of the present invention is to provide a fast data transmission method based on SDN to avoid conflicts, aiming to solve the problem that the existing fast data transmission optimization method assumes that the network is only used to transmit large data, without considering that the transmission data is only the network Part of the functions, there are many real-time information data needs to be processed
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[0034] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0035] The present invention proposes a fast data stream transmission method based on SDN to avoid conflicts. The method is applied to SDN controllers and switching devices to avoid sudden network dangers, and the system needs to re-occupy the link in case of emergency. Transmission of emergency information data, suspension of large data transmission resulting in data loss or data retransmission.
[0036] In the present invention, firstly, when the link that is transmitting data needs to be reoccupied, the switching device that is forwarding the data flow immediately generates a pseudo-fault message. Secondly, when the eme...
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The invention discloses an SDN-based fast data transmission method for avoiding conflicts. When the link that is transmitting data needs to be reoccupied, the switching device that is forwarding the data flow immediately generates a pseudo-fault message; when the emergency link is established When the faulty section is known to the controller, the transmission path is backed up. According to the backup path, the controller generates a backup flow entry in which the source IP address is the IP address of the starting switching device and the destination IP address is the IP address of the terminating switching device. Send the corresponding backup flow entry to the switching device in the backup path, and release the link until the emergency information data flow is forwarded, and concentrate on transmitting the large data flow. The invention avoids the situation of data loss or data retransmission due to the suspension of large data transmission due to sudden network danger; it does not need to interrupt the ongoing data transmission task, meets the requirements of emergency communication for timeliness and efficiency, and improves Data transfer efficiency saves time.
Description
technical field [0001] The invention belongs to the technical field of communication, and in particular relates to an SDN-based fast data transmission method for avoiding conflicts. Background technique [0002] SDN (Software Defined Networks, software-defined network) is a new type of network innovation architecture, which realizes flexible control of network traffic by separating the control plane and data plane. The SDN network is composed of a controller and a switching device. The controller collects network topology information, calculates the forwarding path of the data flow and generates a forwarding flow table, and the switching device forwards the data flow according to the flow table issued by the controller. Therefore, as soon as the concept of SDN was put forward, it attracted special attention from all aspects of the world, and it was even considered as the final realization plan of the new network architecture. At present, YangWang, YimingYu and others propos...
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IPC IPC(8): H04L12/711H04L45/247
CPCH04L45/22
Inventor 王圣达丛犁隋吉生陈鹤陈晨赵力强
Owner 国网吉林省电力有限公司信息通信公司