Gigabit Ethernet redundant network card and link switching condition determination result control method thereof

Abstract

The invention relates to a gigabit Ethernet redundant network card and a link switching condition determination result control method thereof and belongs to the technical field of networks. The network card consists of a gigabit Ethernet controller, a working link Physical Layer (PHY) chip, and a backup link PHY chip, wherein the gigabit Ethernet controller comprises a working link control module and a backup link control module. The working link control module and the backup link control module are connected to a PHY chip of a corresponding link through a corresponding link MII bus and a link Management Data Input Output (MDIO) bus, corresponding working heartbeat frames and backup heartbeat frames are transmitted, the state of the working link and the backup link can be determined through receiving of corresponding working heartbeat frames and backup heartbeat frames, the Ethernet link is determined to be disconnected under the condition that the gigabit Ethernet PHY chip is not modified, the switch of the working link and the backup link is controlled, the response speed of the redundant switching of the card is improved and the use experiment of users is optimized.

Description

technical field [0001] The invention relates to the field of network technology, in particular to the field of network card technology, in particular to a Gigabit Ethernet redundant network card and a method for controlling the judgment result of link switching conditions. Background technique [0002] With the development of network communication technology, Ethernet has been widely used in computer networks, and Ethernet cards have become a standard configuration of computers. In some computer networks, the computer used requires a redundant backup network card, that is, the Ethernet card in the computer is connected to the Ethernet network through two Ethernet links, one of which is used for work and the other is used for backup. When it is found that the current working link is disconnected, it needs to automatically switch to the backup Ethernet link for network communication. The switching time needs to meet the specified time range. [0003] in such as figure 1 In ...

AI Technical Summary

Problems solved by technology

But because Gigabit Ethernet PHY needs more than 100ms to report network disconnection, this makes the switching time difficult to meet the application requirements, resulting in the loss of a large number of Ethernet frames

[0008] One way to solve this problem is to modify the Gigabit Ethernet PHY chip, but this is difficult and expensive to design

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