Switch I2C communication system and method

Abstract

The invention discloses a switch I2C communication system and method, and the system comprises a main controller, a middle-layer controller which is connected with the main controller through an I2C interface, and a plurality of lower-layer device groups which are connected with the middle-layer controller through an I2C interface, and each lower-layer device group comprises one or more pieces oflower-layer device; the middle-layer controller is used for establishing I2C communication between the main controller and all the lower-layer devices; when it is monitored that any lower-layer devicein any lower-layer device group breaks down, I2C communication between the lower-layer device group and the main controller is cut off by the middle layer controller. According to the invention, thecommunication between the main controller and the lower-layer devices is realized by the middle-layer controller; when any lower-layer device fails, the communication link of the lower-layer device group where the lower-layer device is located is disconnected, it is guaranteed that the I2C bus does not fail, the influence of downlink device failure on the whole I2C communication system is reduced,and the overall stability of the I2C communication system is improved.

Description

technical field [0001] The invention relates to the field of communication architecture design, in particular to an exchange I2C communication system and method. Background technique [0002] With the development of information technology, communication security technology has also developed rapidly. Communication security technology is developing more and more in a more accurate and faster direction. The overall architecture of data center switches is also becoming more and more complex. The complexity of the switch architecture brings more stability issues. [0003] Conventional I2C (Inter-Integrated Circuit, two-wire serial bus) is applied to the connection scheme of the switch architecture, whether it is a direct connection scheme between CPU (Central Processing Unit, central processing unit) and I2C equipment, or CPU, BMC (Baseboard Manager Controller) , Baseboard Management Controller) as a dual-master solution, there is a situation where any I2C device fails and ha...

AI Technical Summary

Problems solved by technology

The overall architecture of data center switches is becoming more and more complex

Complex switch architecture brings more stability issues

[0003] Conventional I2C (Inter-Integrated Circuit, two-wire serial bus) is applied to the connection scheme of the switch architecture, whether it is a direct connection scheme between CPU (Central Processing Unit, central processing unit) and I2C equipment, or CPU, BMC (Baseboard Manager Controller) , Baseboard Management Controller) as a dual-master solution, if any I2C device fails and hangs up, the entire I2C bus will no longer be accessible, which will lead to the abnormal use of the entire board

[0004] The existing solution is to return to the factory for maintenance, and the factory maintenance only needs to replace an I2C device, or even replace the optical module to restore normal, but the equipment replacement process will affect the communication in the computer room, and the board in the computer room cannot be used for a long time normal communication and operation

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