CN107769960B - A BMC Management Architecture Based on CAN Bus - Google Patents

Abstract

The invention provides a CAN bus-based BMC management structure, comprising: a remote management platform and a server baseboard management unit connected in communication with the remote management platform; the server baseboard management unit includes: a baseboard management main unit, a plurality of baseboard management sub-units, a network Connecting subunits; the main baseboard management unit and a plurality of baseboard management subunits are respectively interconnected through the network connection subunits; the remote management platform is connected to the main baseboard management unit in communication, and the remote management platform is connected to the main baseboard management unit through communication, and is remotely connected to the device. For a server with a baseboard management subunit, the remote management platform enters the IP address of the baseboard management subunit through a browser to open the management interface of the baseboard management subunit, monitors the health status of the server, and checks the health status of processors, power supplies, and fans , obtain voltage, fan speed, temperature data information, timely understand the working status of each server, and estimate the risk.

Description

A BMC Management Architecture Based on CAN Bus

technical field

The invention relates to the technical field of servers, in particular to a CAN bus-based BMC management architecture.

Background technique

Through the remote management card, the administrator can connect to the server remotely, enter the IP address of the management card through the browser to open the management interface, monitor the health status of the server, and view the health status of key components such as processors, power supplies, and fans, such as voltage. , fan speed, temperature, etc., to understand the working status of the server in time, and to estimate the risk. Allows administrators to operate without having to be in the computer room. But this way is to connect to the server remotely by adding peripheral devices. Additional equipment is required, adding a lot of cost. In particular, each server requires an additional device, which brings huge cost pressure. In addition, this method has poor scalability and requires additional devices such as routers.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies in the above-mentioned prior art, the present invention provides a CAN bus-based BMC management architecture, including: a remote management platform and a server baseboard management unit that is communicatively connected to the remote management platform;

The server baseboard management unit includes: a baseboard management main unit, a plurality of baseboard management subunits, and a network connection subunit;

The main baseboard management unit and a plurality of baseboard management sub-units are respectively interconnected through the network connection sub-units;

The remote management platform is connected to the baseboard management main unit in communication, the remote management platform is connected to the baseboard management main unit through communication, and is remotely connected to the server provided with the baseboard management subunit, and the remote management platform is opened by entering the IP address of the baseboard management subunit through the browser. The management interface of the baseboard management sub-unit monitors the health status of servers, checks the health status of processors, power supplies, and fans, obtains voltage, fan speed, and temperature data information, and timely understands the working status of each server, and predicts risks. estimate.

Preferably, the baseboard management main unit includes: a main BMC manager and a main CAN general module;

The main BMC manager includes: the main ARM processor, the main USB_SIE module, the main video information buffer module, the main keyboard and mouse message parsing module, the main CAN transmission protocol encapsulation and parsing module, the main CAN processor, and the main network transmission protocol encapsulation and parsing module;

The main USB_SIE module, the main video information buffer module, and the main keyboard and mouse message parsing module are respectively connected with the main ARM processor, and respectively transmit the video information, keyboard input and output information, and mouse input and output information to the main ARM processor, and the main ARM processor Processing the received information, and correspondingly feeding back the corresponding feedback control instructions to the main video information buffer module and the main keyboard and mouse message parsing module;

The main ARM processor is provided with a video connection port, and the main ARM processor is connected to the video output device through the video connection port;

The main USB_SIE module is provided with a USB bus connection port, and the USB bus connection port is connected with the USB bus of the BMC management architecture;

The main network transmission protocol encapsulation and analysis module is connected with the network connection subunit, the main network transmission protocol encapsulation and analysis module exchanges data information with the network connection subunit, and the main network transmission protocol encapsulation and analysis module parses and processes the exchanged data information;

The main CAN transmission protocol encapsulation and analysis module is connected with the main network transmission protocol encapsulation and analysis module, and the main CAN transmission protocol encapsulation and analysis module exchanges data information with the main network transmission The data information is further encapsulated and parsed into data information in the form of CAN transmission protocol, and the transmitted data information is transmitted to the main network transmission protocol encapsulation and analysis module in the form of CAN transmission protocol;

The main CAN processor, the main video information cache module, and the main keyboard and mouse message parsing module are respectively connected with the main CAN transmission protocol encapsulation parsing module;

The main CAN processor is also connected with the main CAN main module, the main CAN processor exchanges data information with the main CAN main module, and the main CAN processor is used to transmit the data information obtained from the main CAN transmission protocol encapsulation and analysis module to the main CAN main module, And transmit the data information obtained from the main CAN main module to the main CAN transmission protocol encapsulation and analysis module;

The main video information cache module and the main keyboard and mouse message parsing module respectively exchange data information with the main CAN transmission protocol encapsulation parsing module.

Preferably, the main CAN total module includes: a main CAN controller, a first main CAN transceiver, and a second main CAN transceiver;

The first end of the first main CAN transceiver and the first end of the second main CAN transceiver are respectively connected with the main CAN controller, and the first main CAN transceiver and the second main CAN transceiver are respectively connected with the main CAN controller. Data interaction;

The main CAN controller is connected with the main CAN processor, and the main CAN controller exchanges data with the main CAN processor;

The second end of the first main CAN transceiver and the second end of the second main CAN transceiver are respectively connected to the network connection subunit, and the first main CAN transceiver and the second main CAN transceiver are respectively connected to the network connection subunit for data transmission interact.

Preferably, the baseboard management sub-unit includes: a sub-BMC manager and a sub-CAN general module;

The sub-BMC manager includes: a sub-ARM processor, a sub-USB_SIE module, a sub-video information cache module, a sub-keyboard and mouse message parsing module, a sub-CAN transmission protocol encapsulation and parsing module, a sub-CAN processor, and a sub-network transmission protocol encapsulation and parsing module;

The sub-USB_SIE module, the sub-video information cache module, and the sub-keyboard and mouse message parsing module are respectively connected with the sub-ARM processor, and respectively transmit the video information, keyboard input and output information, and mouse input and output information to the sub-ARM processor and the sub-ARM processor. Processing the received information, and correspondingly feeding back the corresponding feedback control instructions to the sub-video information buffer module and the sub-keyboard mouse message parsing module;

The sub-ARM processor is provided with a video connection port, and the sub-ARM processor is connected to the video output device through the video connection port;

The sub-USB_SIE module is provided with a USB bus connection port, and the USB bus connection port is connected with the USB bus of the BMC management architecture;

The sub-network transmission protocol encapsulation and analysis module is connected with the network connection sub-unit, the sub-network transmission protocol encapsulation and analysis module exchanges data information with the network connection sub-unit, and the sub-network transmission protocol encapsulation and analysis module parses and processes the exchanged data information;

The sub-CAN transmission protocol encapsulation and parsing module is connected to the sub-network transmission protocol encapsulation and parsing module, and the sub-CAN transmission protocol encapsulation and parsing module exchanges data information with the sub-network transmission protocol encapsulation and parsing module, and is used to obtain and parse the The data information is further encapsulated and parsed into data information in the form of the CAN transmission protocol, and the transmitted data information is transmitted to the sub-network transmission protocol encapsulation and analysis module in the form of the CAN transmission protocol;

The sub-CAN processor, the sub-video information cache module, and the sub-keyboard and mouse message parsing module are respectively connected with the sub-CAN transmission protocol encapsulation and parsing module;

The sub-CAN processor is also connected with the sub-CAN main module, the sub-CAN processor exchanges data information with the sub-CAN main module, and the sub-CAN processor is used to transmit the data information obtained from the sub-CAN transmission protocol encapsulation and analysis module to the sub-CAN main module, And the data information obtained from the sub-CAN main module is transmitted to the sub-CAN transmission protocol encapsulation and analysis module;

The sub-video information cache module and the sub-keyboard and mouse message parsing module respectively exchange data information with the sub-CAN transmission protocol encapsulation parsing module.

Preferably, the sub-CAN total module includes: a sub-CAN controller, a first sub-CAN transceiver, and a second sub-CAN transceiver;

The first end of the first sub-CAN transceiver and the first end of the second sub-CAN transceiver are respectively connected with the sub-CAN controller, and the first sub-CAN transceiver and the second sub-CAN transceiver are respectively connected with the sub-CAN controller. Data interaction;

The sub-CAN controller is connected with the sub-CAN processor, and the sub-CAN controller exchanges data with the sub-CAN processor;

The second end of the first sub-CAN transceiver and the second end of the second sub-CAN transceiver are respectively connected to the network connection subunit, and the first sub-CAN transceiver and the second sub-CAN transceiver are respectively connected to the network connection subunit for data transmission. interact.

Preferably, the network connection subunit includes: a first high-speed bus, a first low-speed bus, a second high-speed bus, a second low-speed bus, a first resistor, a second resistor, a third resistor and a fourth resistor;

The first end of the first high-speed bus is connected to the first end of the first resistor, and the second end of the first high-speed bus is connected to the first end of the second resistor;

The first end of the first low-speed bus is connected to the second end of the first resistor, and the second end of the first low-speed bus is connected to the second end of the second resistor;

The first end of the second high-speed bus is connected to the first end of the third resistor, and the second end of the second high-speed bus is connected to the first end of the fourth resistor;

The first end of the second low-speed bus is connected to the second end of the third resistor, and the second end of the second low-speed bus is connected to the second end of the fourth resistor;

The main network transmission protocol encapsulation and analysis module of the baseboard management main unit is respectively connected to the first high-speed bus and the first low-speed bus, and the main network transmission protocol encapsulation and analysis module of the baseboard management main unit exchanges information with the first high-speed bus and the first low-speed bus respectively. ;

The first main CAN transceiver of the baseboard management main unit is connected to the second high-speed bus, and the first main CAN transceiver of the baseboard management main unit exchanges information with the second high-speed bus;

The second main CAN transceiver of the baseboard management main unit is connected to the second low-speed bus, and the second main CAN transceiver of the baseboard management main unit exchanges information with the second low-speed bus.

Preferably, the remote management platform includes: a baseboard management main unit numbering module, a baseboard management subunit numbering module, and a numbering information transmission module;

The baseboard management main unit numbering module is used to number the baseboard management main unit; the baseboard management subunit numbering module is used to number each baseboard management subunit;

The number information processing module is used to number the data information transmitted remotely, and transmit it to the corresponding unit according to the number.

As can be seen from the above technical solutions, the present invention has the following advantages:

The BMC management architecture based on CAN bus solves the problem that in the existing remote management systems based on BMC chips, the need to add additional equipment to support the remote management of a large number of servers, and has good scalability; and remote access to multiple servers only requires Accessing the IP address of the main baseboard management unit and adding multiple baseboard management sub-units can be achieved.

The remote management platform is remotely connected to the server provided with the baseboard management subunit by communicating with the baseboard management main unit. Monitor the health status of servers, check the health status of processors, power supplies, and fans, obtain data information on voltage, fan speed, and temperature, so as to know the working status of each server in time, and estimate risks.

Description of drawings

In order to illustrate the technical solutions of the present invention more clearly, the accompanying drawings required in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, which are not relevant to ordinary skills in the art. As far as personnel are concerned, other drawings can also be obtained from these drawings on the premise of no creative work.

Fig. 1 is the overall schematic diagram of BMC management architecture based on CAN bus;

FIG. 2 is a schematic diagram of a baseboard management main unit.

Detailed ways

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the specific embodiments. Obviously, the implementation described below Examples are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in this patent, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this patent.

The present invention provides a CAN bus-based BMC management architecture, as shown in FIG. 1 , comprising: a remote management platform 1 and a server baseboard management unit 2 that is communicatively connected to the remote management platform 1;

The server baseboard management unit 2 includes: a baseboard management main unit 3, a plurality of baseboard management subunits 4, and a network connection subunit; the baseboard management main unit 3 and the plurality of baseboard management subunits 4 are respectively interconnected through the network connection subunits;

The remote management platform 1 is connected in communication with the baseboard management main unit, the remote management platform is connected to the baseboard management main unit through communication, and is remotely connected to the server provided with the baseboard management subunit, and the remote management platform 1 inputs the information of the baseboard management subunit 4 through the browser. The IP address opens the management interface of the baseboard management sub-unit 4, monitors the health status of the server, checks the health status of the processor, power supply, and fan, obtains the data information of voltage, fan speed, and temperature, and timely understands the working status of each server. Estimate risk.

In this embodiment, as shown in FIG. 2 , the baseboard management main unit 2 includes: a main BMC manager 9 and a main CAN general module 10;

The main BMC manager 9 includes: the main ARM processor 21, the main USB_SIE module 22, the main video information buffer module 23, the main keyboard and mouse message parsing module 24, the main CAN transmission protocol encapsulation and parsing module 25, the main CAN processor 26, the main network transmission protocol encapsulation and analysis module 27;

The main USB_SIE module 21, the main video information buffer module 23, and the main keyboard and mouse message parsing module 24 are respectively connected with the main ARM processor 21, and respectively transmit video information, keyboard input and output information, and mouse input and output information to the main ARM processor, The main ARM processor processes the received information, and feeds back the corresponding feedback control instructions to the main video information buffer module and the main keyboard and mouse message parsing module;

The main ARM processor 21 is provided with a video connection port 29, and the main ARM processor 21 is connected to the video output device through the video connection port;

The main USB_SIE module 22 is provided with a USB bus connection port 28, and the USB bus connection port 28 is connected with the USB bus of the BMC management architecture;

The main network transmission protocol encapsulation and analysis module 27 is connected with the network connection subunit, the main network transmission protocol encapsulation and analysis module 27 exchanges data information with the network connection subunit, and the main network transmission protocol encapsulation and analysis module 27 parses and processes the interactive data information;

The main CAN transmission protocol encapsulation and analysis module 25 is connected to the main network transmission protocol encapsulation and analysis module 27, and the main CAN transmission protocol encapsulation and analysis module exchanges data information with the main network transmission protocol encapsulation and analysis module, which is used to obtain and analyze the main network transmission protocol. The parsed data information is further encapsulated and parsed into data information in the form of the CAN transmission protocol, and the transmitted data information is transmitted to the main network transmission protocol encapsulation and analysis module in the form of the CAN transmission protocol;

The main CAN processor 26, the main video information buffer module 23, and the main keyboard and mouse message parsing module 24 are respectively connected with the main CAN transmission protocol encapsulation parsing module 25;

The main CAN processor 26 is also connected to the main CAN main module 10, the main CAN processor exchanges data information with the main CAN main module, and the main CAN processor is used to transmit the data information obtained from the main CAN transmission protocol encapsulation and analysis module to the main CAN general module. module, and transmit the data information obtained from the main CAN main module to the main CAN transmission protocol encapsulation and analysis module; the main video information cache module and the main keyboard and mouse message analysis module respectively exchange data information with the main CAN transmission protocol encapsulation and analysis module.

The main CAN overall module 10 includes: a main CAN controller 31 , a first main CAN transceiver 32 , and a second main CAN transceiver 33 ;

The first end of the first main CAN transceiver 32 and the first end of the second main CAN transceiver 33 are respectively connected to the main CAN controller 31 , and the first main CAN transceiver 32 and the second main CAN transceiver 33 are respectively connected to the main CAN controller 31 . The main CAN controller 31 performs data interaction;

The main CAN controller 31 is connected to the main CAN processor 26 , and the main CAN controller 31 exchanges data with the main CAN processor 26 ; the second end of the first main CAN transceiver 32 , the second end of the second main CAN transceiver 33 The terminals are respectively connected to the network connection subunits, and the first main CAN transceiver and the second main CAN transceiver respectively perform data exchange with the network connection subunits.

In this embodiment, the baseboard management subunit includes: a sub-BMC manager and a sub-CAN general module;

The sub-BMC manager includes: a sub-ARM processor, a sub-USB_SIE module, a sub-video information cache module, a sub-keyboard and mouse message parsing module, a sub-CAN transmission protocol encapsulation and parsing module, a sub-CAN processor, and a sub-network transmission protocol encapsulation and parsing module;

The sub-USB_SIE module, the sub-video information cache module, and the sub-keyboard and mouse message parsing module are respectively connected with the sub-ARM processor, and respectively transmit the video information, keyboard input and output information, and mouse input and output information to the sub-ARM processor and the sub-ARM processor. Processing the received information, and correspondingly feeding back the corresponding feedback control instructions to the sub-video information buffer module and the sub-keyboard mouse message parsing module;

The sub-ARM processor is provided with a video connection port, and the sub-ARM processor is connected to the video output device through the video connection port;

The sub-USB_SIE module is provided with a USB bus connection port, and the USB bus connection port is connected with the USB bus of the BMC management architecture;

The sub-network transmission protocol encapsulation and analysis module is connected with the network connection sub-unit, the sub-network transmission protocol encapsulation and analysis module exchanges data information with the network connection sub-unit, and the sub-network transmission protocol encapsulation and analysis module parses and processes the exchanged data information;

The sub-CAN transmission protocol encapsulation and parsing module is connected to the sub-network transmission protocol encapsulation and parsing module, and the sub-CAN transmission protocol encapsulation and parsing module exchanges data information with the sub-network transmission protocol encapsulation and parsing module, and is used to obtain and parse the The data information is further encapsulated and parsed into data information in the form of the CAN transmission protocol, and the transmitted data information is transmitted to the sub-network transmission protocol encapsulation and analysis module in the form of the CAN transmission protocol;

The sub-CAN processor, the sub-video information cache module, and the sub-keyboard and mouse message parsing module are respectively connected with the sub-CAN transmission protocol encapsulation and parsing module;

The sub-CAN processor is also connected with the sub-CAN main module, the sub-CAN processor exchanges data information with the sub-CAN main module, and the sub-CAN processor is used to transmit the data information obtained from the sub-CAN transmission protocol encapsulation and analysis module to the sub-CAN main module, And the data information obtained from the sub-CAN main module is transmitted to the sub-CAN transmission protocol encapsulation and analysis module;

The sub-video information cache module and the sub-keyboard and mouse message parsing module respectively exchange data information with the sub-CAN transmission protocol encapsulation parsing module.

The sub-CAN main module includes: a sub-CAN controller, a first sub-CAN transceiver, a second sub-CAN transceiver; the first end of the first sub-CAN transceiver, the first end of the second sub-CAN transceiver and the sub-CAN transceiver respectively. The controller is connected, and the first sub-CAN transceiver and the second sub-CAN transceiver exchange data with the sub-CAN controller respectively; the sub-CAN controller is connected with the sub-CAN processor, and the sub-CAN controller and the sub-CAN processor exchange data. Interaction; the second end of the first sub-CAN transceiver, the second end of the second sub-CAN transceiver are respectively connected to the network connection subunit, and the first sub-CAN transceiver and the second sub-CAN transceiver are respectively connected to the network subunit data interaction.

In this embodiment, the network connection subunit includes: a first high-speed bus 5 , a first low-speed bus 7 , a second high-speed bus 6 , a second low-speed bus 8 , a first resistor 11 , a second resistor 12 , a third resistor 13 and the fourth resistor 14;

The first end of the first high-speed bus 5 is connected to the first end of the first resistor 11, the second end of the first high-speed bus 5 is connected to the first end of the second resistor 12; the first end of the first low-speed bus 7 is connected to The second end of the first resistor 11 is connected, the second end of the first low-speed bus 7 is connected to the second end of the second resistor 12; the first end of the second high-speed bus 6 is connected to the first end of the third resistor 13, The second end of the second high-speed bus 6 is connected to the first end of the fourth resistor 14; the first end of the second low-speed bus 8 is connected to the second end of the third resistor 13, and the second end of the second low-speed bus 8 is connected to the second end of the fourth resistor 14 is connected;

The main network transmission protocol encapsulation and analysis module of the baseboard management main unit is respectively connected to the first high-speed bus and the first low-speed bus, and the main network transmission protocol encapsulation and analysis module of the baseboard management main unit exchanges information with the first high-speed bus and the first low-speed bus respectively. ; The first main CAN transceiver of the baseboard management main unit is connected with the second high-speed bus, and the first main CAN transceiver of the baseboard management main unit exchanges information with the second high-speed bus; the second main CAN transceiver of the baseboard management main unit It is connected to the second low-speed bus, and the second main CAN transceiver of the baseboard management main unit exchanges information with the second low-speed bus.

In this embodiment, the remote management platform includes: a baseboard management main unit numbering module, a baseboard management subunit numbering module, and a numbering information transmission module; the baseboard management main unit numbering module is used to number the baseboard management main unit; the baseboard management subunit numbering module The module is used to number each baseboard management sub-unit; the number information processing module is used to number the data information transmitted remotely, and transmit it to the corresponding unit according to the number.

In this embodiment, the main baseboard management unit and a plurality of baseboard management sub-units have a CAN bus, the main network transmission protocol encapsulation and analysis module, and the sub-network transmission protocol encapsulation and analysis module are respectively connected to the CAN bus for transmitting video information, and for transmitting mouse and keyboard information. CAN bus connection. The remote management platform is connected to the baseboard management main unit through the network, and the baseboard management main unit is responsible for the forwarding of information.

The first high-speed bus and the second high-speed bus are CAN buses for transmitting video information. The first low-speed bus and the second low-speed bus are CAN buses for transmitting mouse and keyboard information.

The main CAN main module and the sub-CAN main module are responsible for serial-to-parallel conversion of CAN bus transmission completion information. Complete the transmission of video, keyboard, mouse, control and other information between the baseboard management sub-units.

The baseboard management main unit and the baseboard management subunit realize the control of the server. In the present invention, the transmission of video and keyboard and mouse information is mainly realized, and the baseboard management main unit is responsible for network communication with the remote management platform. The CAN coprocessor completes the control of the CAN controller and the transmission of information, the main CAN transmission protocol encapsulation and analysis module is responsible for the encapsulation and analysis of the CAN bus data transmission, and the main network transmission protocol encapsulation and analysis module is responsible for the transmission and reception of data with the remote management platform , and completes the extraction of corresponding information, including mouse keyboard and video information, keyboard and mouse message parsing module is responsible for the keyboard and mouse information sent by the remote process management system and sends the information to the ARM processor for processing.

The BMC management architecture based on CAN bus can realize the transmission of mouse, keyboard and video information. The present invention refers to the transmission of keyboard and mouse information as downlink transmission, and the transmission of video information as uplink transmission.

The downlink transmission workflow is as follows: the remote management platform accesses the IP of the baseboard management main unit, and then selects the number of the baseboard management sub-unit. The present invention supports 32 numbers, wherein the baseboard management main unit number is 0, and the other numbers are 1-31 . The ID high 5 bits of the CAN standard data frame identify the number of each BC module, and the ID number corresponding to each CAN device is 0-31 respectively. After the communication between the baseboard management main unit and the remote management platform is established, the keyboard and mouse information can be transmitted. .

The baseboard management main unit receives the control information sent by the management system, and transmits data information according to the number. If it is the baseboard management main unit, it is directly forwarded to the main ARM processor. The message of the mouse is sent to the USB interface, and the corresponding server receives the corresponding information and completes the data communication transmission.

If it is a baseboard management subunit, the baseboard management main unit sends control information to the corresponding baseboard management subunit, and the corresponding baseboard management subunit parses the control information and sends it to the sub-ARM processor. The message converted into the keyboard or mouse is sent to the USB interface, and the corresponding server receives the corresponding information and completes the data communication transmission.

The keyboard and mouse information messages are divided into two types: control messages and data messages. A CAN bus data frame can contain up to 8 bytes of data, so the length of the data message is 8 bytes. The format of the control message is as follows:

Among them, Class is the packet type 00: indicates the configuration packet. DNID: Indicates which BC module is selected. The selection range is 0-31. Ecc is the check digit. RESERVE is a reserved bit. The format of the keyboard and mouse information message is as follows:

Among them, Class is the message type 01: indicates the keyboard; 10 indicates the mouse.

Message is a message type: it indicates a specific peripheral operation type. Depending on the Class, the meaning of the message type is also different. For example, 0001 indicates the space bar under the keyboard message, and indicates the left mouse button under the mouse message. Ecc is the check digit.

DATA0,1 represent the data carried by the message. Under Mouse Type, it represents the coordinate parameter. Under the keyboard message, various key combinations are represented. RESERVE is a reserved bit.

The transmission of video information is collectively referred to as the upstream transmission. The workflow is as follows:

The baseboard management unit of the accessed server, the ARM processor including the baseboard management main unit and the baseboard management sub-unit receives the video information, and if the accessed unit is the baseboard management unit, the baseboard management main unit directly obtains the information.

If the baseboard management sub-unit is accessed, the video information is sent to the baseboard management main unit through the high-speed bus, and the baseboard management main unit receives the CAN bus information, converts it into network information and sends it to the management system.

Uplink packets only include data packets, as shown below:

Among them, Class is the packet type 11: Indicates uplink data packets.

STATE is the transmission state: 00 means start sending uplink data, 01 means complete 6-byte data, and 11 means the end of transmission.

DATA indicates the data carried by the packet. When STATE is 00, 01, DATA represents all 6 bytes of data; in 11 state, DATA[7:0] represents the number of bytes carried by this packet, up to 5 bytes.

RESERVE is a reserved bit. Ecc is the check digit.

The BMC management architecture based on CAN bus solves the problem that in the existing remote management systems based on BMC chips, the need to add additional equipment to support the remote management of a large number of servers, and has good scalability; and remote access to multiple servers only requires Accessing the IP address of the main baseboard management unit and adding multiple baseboard management sub-units can be achieved.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to Describe a particular order or sequence. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover non-exclusive inclusion.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. a BMC management architecture based on CAN bus, is characterized in that, comprises: remote management platform and the server baseboard management unit that is connected with remote management platform communication; The server baseboard management unit includes: a baseboard management main unit, a plurality of baseboard management subunits, and a network connection subunit; The main baseboard management unit and a plurality of baseboard management sub-units are respectively interconnected through the network connection sub-units; The remote management platform is connected to the baseboard management main unit in communication, the remote management platform is connected to the baseboard management main unit through communication, and is remotely connected to the server provided with the baseboard management subunit, and the remote management platform is opened by entering the IP address of the baseboard management subunit through the browser. The management interface of the baseboard management sub-unit monitors the health status of servers, checks the health status of processors, power supplies, and fans, obtains voltage, fan speed, and temperature data information, and timely understands the working status of each server, and predicts risks. estimate; The baseboard management main unit includes: the main BMC manager and the main CAN total module; The main BMC manager includes: the main ARM processor, the main USB_SIE module, the main video information buffer module, the main keyboard and mouse message parsing module, the main CAN transmission protocol encapsulation and parsing module, the main CAN processor, and the main network transmission protocol encapsulation and parsing module; The main USB_SIE module, the main video information cache module, and the main keyboard and mouse message parsing module are respectively connected with the main ARM processor, and respectively transmit the video information, keyboard input and output information, and mouse input and output information to the main ARM processor, and the main ARM processor Processing the received information, and correspondingly feeding back the corresponding feedback control instructions to the main video information buffer module and the main keyboard and mouse message parsing module; The main ARM processor is provided with a video connection port, and the main ARM processor is connected to the video output device through the video connection port; The main USB_SIE module is provided with a USB bus connection port, and the USB bus connection port is connected with the USB bus of the BMC management architecture; The main network transmission protocol encapsulation and analysis module is connected with the network connection subunit, the main network transmission protocol encapsulation and analysis module exchanges data information with the network connection subunit, and the main network transmission protocol encapsulation and analysis module parses and processes the exchanged data information; The main CAN transmission protocol encapsulation and analysis module is connected with the main network transmission protocol encapsulation and analysis module, and the main CAN transmission protocol encapsulation and analysis module exchanges data information with the main network transmission The data information is further encapsulated and parsed into data information in the form of CAN transmission protocol, and the transmitted data information is transmitted to the main network transmission protocol encapsulation and analysis module in the form of CAN transmission protocol; The main CAN processor, the main video information cache module, and the main keyboard and mouse message parsing module are respectively connected with the main CAN transmission protocol encapsulation parsing module; The main CAN processor is also connected with the main CAN main module, the main CAN processor exchanges data information with the main CAN main module, and the main CAN processor is used to transmit the data information obtained from the main CAN transmission protocol encapsulation and analysis module to the main CAN main module, And transmit the data information obtained from the main CAN main module to the main CAN transmission protocol encapsulation and analysis module; The main video information cache module and the main keyboard and mouse message parsing module respectively exchange data information with the main CAN transmission protocol encapsulation parsing module. 2. the BMC management framework based on CAN bus according to claim 1, is characterized in that, The main CAN total module includes: the main CAN controller, the first main CAN transceiver, and the second main CAN transceiver; The first end of the first main CAN transceiver and the first end of the second main CAN transceiver are respectively connected with the main CAN controller, and the first main CAN transceiver and the second main CAN transceiver are respectively connected with the main CAN controller. Data interaction; The main CAN controller is connected with the main CAN processor, and the main CAN controller exchanges data with the main CAN processor; The second end of the first main CAN transceiver and the second end of the second main CAN transceiver are respectively connected to the network connection subunit, and the first main CAN transceiver and the second main CAN transceiver are respectively connected to the network connection subunit for data transmission interact. 3. the BMC management framework based on CAN bus according to claim 1, is characterized in that, The baseboard management sub-unit includes: sub-BMC manager and sub-CAN total module; The sub-BMC manager includes: a sub-ARM processor, a sub-USB_SIE module, a sub-video information cache module, a sub-keyboard and mouse message parsing module, a sub-CAN transmission protocol encapsulation and parsing module, a sub-CAN processor, and a sub-network transmission protocol encapsulation and parsing module; The sub-USB_SIE module, the sub-video information cache module, and the sub-keyboard and mouse message parsing module are respectively connected with the sub-ARM processor, and respectively transmit the video information, keyboard input and output information, and mouse input and output information to the sub-ARM processor and the sub-ARM processor. Processing the received information, and correspondingly feeding back the corresponding feedback control instructions to the sub-video information buffer module and the sub-keyboard mouse message parsing module; The sub-ARM processor is provided with a video connection port, and the sub-ARM processor is connected to the video output device through the video connection port; The sub-USB_SIE module is provided with a USB bus connection port, and the USB bus connection port is connected with the USB bus of the BMC management architecture; The sub-network transmission protocol encapsulation and analysis module is connected with the network connection sub-unit, the sub-network transmission protocol encapsulation and analysis module exchanges data information with the network connection sub-unit, and the sub-network transmission protocol encapsulation and analysis module parses and processes the exchanged data information; The sub-CAN transmission protocol encapsulation and parsing module is connected to the sub-network transmission protocol encapsulation and parsing module, and the sub-CAN transmission protocol encapsulation and parsing module exchanges data information with the sub-network transmission protocol encapsulation and parsing module, and is used to obtain and parse the The data information is further encapsulated and parsed into data information in the form of the CAN transmission protocol, and the transmitted data information is transmitted to the sub-network transmission protocol encapsulation and analysis module in the form of the CAN transmission protocol; The sub-CAN processor, the sub-video information cache module, and the sub-keyboard and mouse message parsing module are respectively connected with the sub-CAN transmission protocol encapsulation and parsing module; The sub-CAN processor is also connected with the sub-CAN main module, the sub-CAN processor exchanges data information with the sub-CAN main module, and the sub-CAN processor is used to transmit the data information obtained from the sub-CAN transmission protocol encapsulation and analysis module to the sub-CAN main module, And the data information obtained from the sub-CAN main module is transmitted to the sub-CAN transmission protocol encapsulation and analysis module; The sub-video information cache module and the sub-keyboard and mouse message parsing module respectively exchange data information with the sub-CAN transmission protocol encapsulation parsing module. 4. the BMC management framework based on CAN bus according to claim 3, is characterized in that, The sub-CAN total module includes: a sub-CAN controller, a first sub-CAN transceiver, and a second sub-CAN transceiver; The first end of the first sub-CAN transceiver and the first end of the second sub-CAN transceiver are respectively connected with the sub-CAN controller, and the first sub-CAN transceiver and the second sub-CAN transceiver are respectively connected with the sub-CAN controller. Data interaction; The sub-CAN controller is connected with the sub-CAN processor, and the sub-CAN controller exchanges data with the sub-CAN processor; The second end of the first sub-CAN transceiver and the second end of the second sub-CAN transceiver are respectively connected to the network connection subunit, and the first sub-CAN transceiver and the second sub-CAN transceiver are respectively connected to the network connection subunit for data transmission. interact. 5. the BMC management framework based on CAN bus according to claim 3, is characterized in that, The network connection subunit includes: a first high-speed bus, a first low-speed bus, a second high-speed bus, a second low-speed bus, a first resistor, a second resistor, a third resistor and a fourth resistor; The first end of the first high-speed bus is connected to the first end of the first resistor, and the second end of the first high-speed bus is connected to the first end of the second resistor; The first end of the first low-speed bus is connected to the second end of the first resistor, and the second end of the first low-speed bus is connected to the second end of the second resistor; The first end of the second high-speed bus is connected to the first end of the third resistor, and the second end of the second high-speed bus is connected to the first end of the fourth resistor; The first end of the second low-speed bus is connected to the second end of the third resistor, and the second end of the second low-speed bus is connected to the second end of the fourth resistor; The main network transmission protocol encapsulation and analysis module of the baseboard management main unit is respectively connected with the first high-speed bus and the first low-speed bus, and the main network transmission protocol encapsulation and analysis module of the baseboard management main unit exchanges information with the first high-speed bus and the first low-speed bus respectively. ; The first main CAN transceiver of the baseboard management main unit is connected to the second high-speed bus, and the first main CAN transceiver of the baseboard management main unit exchanges information with the second high-speed bus; The second main CAN transceiver of the baseboard management main unit is connected to the second low-speed bus, and the second main CAN transceiver of the baseboard management main unit exchanges information with the second low-speed bus. 6. the BMC management framework based on CAN bus according to claim 5, is characterized in that, The remote management platform includes: a baseboard management main unit numbering module, a baseboard management subunit numbering module, and a numbering information transmission module; The baseboard management main unit numbering module is used to number the baseboard management main unit; the baseboard management subunit numbering module is used to number each baseboard management subunit; The number information processing module is used to number the data information transmitted remotely, and transmit it to the corresponding unit according to the number.

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