Redundant communication method for realizing multi-internet access IP address sharing based on white list

Abstract

The invention discloses a redundant communication method for realizing multi-internet access IP address sharing based on a white list. The method is characterized by comprising the following steps: step one, a network card driver detects link states of multiple ports of a network card and selects the current network card working port according to multi-network switching logic; step two, the white list corresponding to the current network card working port is set, an allowable-to-receive MAC address of the current network card working port is written in the white list, and the white list corresponding to other port is eliminated at the same time; step three, when receiving the data: the current network card working port only receives a message with a destination address written in the white list, and other data is directly abandoned, and other port is prohibited to receive the data; when sending the data: the network card driver assigns to send the data from the current working port. By use of the redundant communication method disclosed by the invention, the communication is realized under the condition that the multiple internet accesses of the device have the same IP address and the same MAC address.

Description

technical field [0001] The invention relates to a redundant communication method for realizing multi-network ports sharing IP addresses based on a white list. Background technique [0002] In the field of intelligent equipment in power systems, a special multi-network communication situation often occurs: multiple ports of a device network are required to have the same IP address and MAC address, and multiple ports are hot backup. The actual application of the network is as follows figure 1 shown. [0003] Ordinary devices cannot provide multiple network cards with the same IP address and the same MAC address under normal circumstances. With the support of the operating system, you can set the dual-network card binding (bond) mode to run, which can provide dual networks with the same IP address and MAC address, but requires the device to support dual network cards on the hardware and the operating system supports dual-network bonding. This will lead to complex design and i...

AI Technical Summary

Problems solved by technology

[0003] Ordinary devices cannot provide multiple network cards with the same IP address and the same MAC address under normal circumstances

With the support of the operating system, you can set the dual-network card binding (bond) mode to run, which can provide dual networks with the same IP address and MAC address, but requires the device to support dual network cards on the hardware and the operating system supports dual-network bonding. This will lead to complex design and increased cost, and this method cannot realize the mode of multiple network ports sharing the same IP address

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