A method for automatically assigning network addresses to cascaded devices based on link layer data communication

Abstract

The present invention describes a method for automatically assigning network addresses to cascaded devices based on link layer data communication, including acquiring target mac addresses and special target mac addresses, acquiring plain text check codes and link layer check codes, Steps such as deleting or marking the network address in the layer data frame and calculating the number of remaining network addresses, and encapsulating into a link layer data frame; due to the adoption of the above-mentioned technology, the present invention can ensure that the static network addresses allocated by each cascaded device will not conflict, and also There is no need for any manual processing, and at the same time, the specific physical location of the device can be known deterministically through the network address, which becomes very convenient and certain when controlling a specific device at a certain location through the network address; and this method can be used independently or as a whole It can be integrated into other methods, and can also be separately integrated into other methods for use. It has beneficial effects such as high degree of intelligence, strong maintainability, strong reliability, and eliminating the influence of human factors on system operation.

Description

technical field [0001] The invention relates to the technical field of Ethernet, in particular to a method for automatically assigning static network addresses when both ends or one end of cascading (series) equipment in a single cascading link is connected to the Ethernet network. Background technique [0002] The devices connected to the Ethernet network can have various forms, one is direct access to form a star network topology, the other is connected devices form a bus topology through serial connections, and the serial The connected cascade devices are connected by Ethernet. At the same time, the current technical solutions mainly include the following three types: [0003] (1) By manually setting the static network address of each cascade device; [0004] (2) Configure the static network address through dial switches, hard wiring, address lines, etc.; [0005] (3) Dynamically allocate IP (network address) through DHCP, and then the device will statically allocate t...

AI Technical Summary

Problems solved by technology

[0007] (1) It is time-consuming and labor-intensive to manually set the static network addresses of each cascaded device, and there may be human errors that may lead to network address setting errors or network address conflicts

[0008] (2) Manual maintenance and setting are also required through the dial switch, hard wiring, address line, etc., and there are also possible human errors, dropping of the dial switch, disconnection of the hard wiring and the address line, etc. Network address setting error or network address conflict phenomenon

[0009] (3) Dynamic address allocation is carried out through DHCP, and then the device performs static dynamic address. Multiple DHCPs may exist in the network at the same time, resulting in address allocation conflicts. There may also be address conflicts during the DHCP allocation process. Moreover, DHCP The IP address assigned by the method cannot locate the specific device location through the IP address, and the corresponding event and control cannot be deterministically processed through the IP address for specific control requirements (for example, when there is event linkage, it is impossible to determine the need for a certain IP address) Linkage with the corresponding equipment)

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