Control method and system for internal serial port access of multi-node equipment

Abstract

A control method for internal serial port access of multi-node equipment comprises the following steps: according to a selection instruction of an external serial port, a first CPLD of each node in aplurality of nodes is controlled to select one of serial port paths of a plurality of pieces of serial port equipment connected with the first CPLD; the first CPLD transmits serial port equipment information corresponding to the selected serial port path to an MUX chip in the node; the MUX chip is controlled to select an output path according to a control instruction of the external serial port, and the serial port equipment information is transmitted to a second CPLD in a corresponding management board through a node serial port path corresponding to the output path; a management board controls the second CPLD to select a node serial port path of one of the plurality of nodes according to a switching instruction of the external serial port; and the second CPLD transmits the serial port equipment information corresponding to the selected node serial port path to the external serial port. According to the scheme, access requirements of all equipment serial ports in the whole system canbe met on any management board, the backboard cost is saved, and research, development, debugging and fault positioning are facilitated.

Description

technical field [0001] The present invention relates to the technical field of cloud computing, and more specifically, to a method and system for controlling internal serial port access of a multi-node device. Background technique [0002] The current storage multi-control system or server blade system has multiple nodes in the device. Generally, the Baseboard Management Controller (BMC) is used to output the serial port signals of the BMC and the operating system. With the increase of various complex applications, more and more devices need serial port access. At present, the commonly used method is to aggregate the serial port signals of each node through the complex programmable logic device (CPLD) of the management board and output them to the outside world, and the external serial port is switched to a different serial port through the serial port switching command of the CPLD. However, this method only provides BMC and operating system strings. If serial ports of othe...

AI Technical Summary

Problems solved by technology

However, this method only provides BMC and operating system strings. If serial ports of other devices are added, the demand for backplane signal pins will be increased, and expensive backplane connectors will be occupied, resulting in waste of resources.

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