Method for automatically switching wired network and wireless network

Abstract

The invention discloses a method for automatically switching a wired network and a wireless network. The method comprises the steps that S1, front-end equipment judges whether the wired network is successfully connected or not through an icmp protocol or a telnet protocol: when the wired network connection is determined to be successful, executing the step S2; when it is determined that the wirednetwork connection fails, executing the step S3; S2, the front-end equipment transmits data to a background server through a wired network; S3, the front-end equipment is connected with a wireless network, and is connected with a wireless local area network based on a VPN technology so as to realize safe transmission of data. Data transmission is carried out through a wired network, data transmission is more stable, safety and reliability are higher, and meanwhile the flow of wireless network transmission can be saved. And the wireless network can transmit data in time when the wired network is abnormal, so that the integrity of the data is ensured.

Description

technical field [0001] The invention relates to the technical field of network switching, in particular to a method for automatic switching between a wired network and a wireless network. Background technique [0002] At present, in many industries, there are front-end devices that need to transmit the collected data back to the background server. In fact, there is only point-to-point transmission between them. Normally, a wired LAN is used to transmit data. When the cable is disconnected or the intermediate switch is powered off When the network is connected, data transmission cannot be performed, thereby increasing the wireless network transmission data function. When the prior art wired network and wireless network exist at the same time, the wireless network is always online when the wired network is normally connected, wasting traffic, and the cost is high; at the same time If the wireless network is always online, it will also affect the use of the wired network, and t...

AI Technical Summary

Problems solved by technology

[0002] At present, in many industries, there are front-end devices that need to transmit the collected data back to the background server. In fact, there is only point-to-point transmission between them. Normally, a wired LAN is used to transmit data. When the cable is disconnected or the intermediate switch is powered off When the network is connected, data transmission cannot be performed, thereby increasing the wireless network transmission data function. When the prior art wired network and wireless network exist at the same time, the wireless network is always online when the wired network is normally connected, wasting traffic, and the cost is high; at the same time If the wireless network is always online, it will also affect the use of the wired network, and it cannot effectively allow the system to automatically select the optimal network. Therefore, the present invention can effectively solve this problem

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