Industry internet networking method and address analysis method

Abstract

The invention relates to an industrial internet networking method and an address resolution method, which comprises at least one remote access node including at least one network interface. The method is characterized in that an access service layer including at least two levels is established, the access service layer of each level at least includes an access sever with an static IP address, and the remote access node is connected with the access server in a VPN dialing manner via public network; a domain name address corresponding table capable of automatically updating is stored in each access server; and each access server has an access authorization verification module. The invention has the advantages that by establishing a layered access service layer and a layered domain name system structure, the remote access node is connected with the access server of the access service layer in the VPN dialing manner so that the problem of inconvenient management due to large area span of remote access node can be solved; and owing to the layered industrial internet networking, setting an static IP for each remote node is obviated.

Description

technical field [0001] The invention relates to an industrial Internet networking method and an address resolution method in the industrial Internet. Background technique [0002] The existing commercial Internet generally manages all computer terminals connected to it through the Domain Name System (hereinafter referred to as DNS), or "Domain Name System". In fact, each computer terminal accesses the Internet through a static IP address. , but because IP addresses are difficult to remember, most computer terminals have at least one domain name connected to the Internet. These domain names such as www.sipo.gov.cn are friendly and easy to remember and are widely used in Internet management, while DNS is Establish an address resolution protocol table for the corresponding relationship between the domain name and IP address of each computer terminal connected to the Internet, so that people can easily enter the domain name of the computer terminal to access instead of the borin...

AI Technical Summary

Problems solved by technology

[0004] (1) If a static IP address is set for each node in the LAN, the IP service fee will be very high, and the resources of the existing IP addresses are relatively scarce, and so many IP resources cannot be obtained;

[0005] (2) In the industrial automation system, for the sake of system security, some important nodes are often configured redundantly, that is, two devices share an IP address, and the device in the host state occupies the IP, while the redundantly configured backup device is isolated, commercial DNS servers cannot identify redundant devices

Commercial Internet address resolution methods generally use the ARP address resolution protocol. When there are many layers among multiple remote access nodes in the network, the ARP address resolution protocol cannot realize the search for remote access nodes with lower layers.

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