CN103838696B - Signal multiplex device and method between a kind of plate management and plate - Google Patents

Abstract

The invention discloses signal multiplex device and method between a kind of management of plate and plate, the device includes subrack console, CAN, BMC plates；The subrack console connects BMC plates by CAN；Wherein, CAN manages signaling bus between bus and plate as plate；Microprocessor is provided with BMC plates, any BMC plates are all configured as machine frame management, it is not necessary to special Shelf management module.The present invention uses CAN to manage signaling bus between bus and plate as plate, solve signaling use demand between plate management and plate simultaneously using 2 holding wires, including audio call signaling and sensing data and control signaling, greatly reduce the number of pins of back panel connector, stabilization of equipment performance is improved, and cost is optimized；And plate management quantity of the present invention maximum can manage 110, realize 110 plug-in cards of single frame monobus while using.

Description

Device and method for managing plugboards and multiplexing inter-board signaling

Technical Field

The invention relates to the technical field of communication, in particular to a device for managing plugboards and multiplexing inter-board signaling.

Background

The cards in the electronic plug-in box need monitoring management, and the I2C bus is commonly used as a communication and management bus between the plug-in boards in the existing system. The maximum communication speed of the I2C bus is 400Kbs, the hot plug is not supported, the bus arbiter is needed to realize multi-master communication, and the limitation exists. A typical application is IPMI.

IPMI is an abbreviation of Intelligent Platform Management Interface (Intelligent Platform Management Interface). The IPMI may be used by a user to monitor physical health characteristics of the server, such as temperature, voltage, fan operating status, power status, etc.

The IPMI connects a CMM (chassis Management Module) Module on a SMM (System Management Module) board and a BMC Module of other boards via an IPMB (Intelligent Platform Management Bus), i.e., an I2C Bus. The core equipment of the smart city needs to realize the access and management of multiple industry and multiple data types, and generally needs a single system to realize the management of up to 100 plugboards. The maximum single system management capacity of an IPMI bus management mechanism used by the traditional CPCI plug-in box and ATCA plug-in box is 16, and unified management cannot be realized. Meanwhile, as part of a smart city 3: voice, video, sensory data and control 2 parts: voice call signaling, sensing data and control signaling are implemented in a conventional jack box through PCI and PCIE buses (as shown in fig. 1 and fig. 2).

Disclosure of Invention

The invention aims to provide a device and a method for managing plugboards and multiplexing inter-board signaling, which provide integral management and monitoring support for a plug-in box comprising a plurality of freely-configured plug-in cards and support for inter-board call signaling and narrow-band data signaling communication, so as to solve the defects and inconvenience caused by using an I2C bus as a board management bus and using a PCI or PCIE bus as a signaling bus in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:

a device for managing plugboards and multiplexing inter-board signaling comprises a plug-in box console, a CAN bus and a BMC plugboard; the subrack control console is connected with a BMC (baseboard management controller) plugboard through a CAN (controller area network) bus; wherein,

the CAN bus is used as a plugboard management bus and an inter-plugboard signaling bus;

be equipped with microprocessor in the BMC picture peg, the BMC picture peg uses microprocessor to carry out distributed substrate management, and the management content includes: monitoring information of voltage, power consumption and temperature of the plug board is sent to the CAN bus once per second; acquiring a command from the CAN bus, and executing power-on, power-off and restarting; each BMC plug board carries out distributed substrate management through a microprocessor, 2-level setting of a management layer and a functional layer is realized with a plug board functional module, and N +1 redundancy backup of the plug board is realized.

As a further scheme of the present invention, the BMC board is divided into an NODE card and a MASTER card, wherein any BMC board is used as a NODE of the CAN bus, any BMC board CAN be freely configured as the NODE card and the MASTER card, and any BMC board is provided with a microprocessor management chip and is accessed to the CAN bus through a CAN physical layer chip.

A method for managing plugboards and multiplexing inter-board signaling comprises the following steps:

(1) a set of CAN communication lines is arranged on a back plate of the plug-in box, and an impedance coupling circuit of the lines (cables) is realized;

(2) after the NODE card is inserted, an insertion registration message is sent to the CAN bus, and the message carries the board card category information;

the NODE card sends a heartbeat message every 1 second in the normal operation process;

the NODE card is used for collecting the running conditions of the card, including voltage, power consumption, temperature and resource occupation conditions, and sending a monitoring message to the bus;

(3) the MASTER card monitors all bus messages, processes a plug-in card insertion event according to a registration message, processes a plug-out event of the plug-in card according to a heartbeat message overtime, and processes an alarm event of the plug-in card according to a monitoring message;

(4) the MASTER card can send out reset, power-on and power-off control for each NODE card.

As a further scheme of the present invention, in step (2), the messages are divided into management messages and signaling messages, and the priority of the management messages is higher than that of the signaling messages, so as to implement the priority non-blocking communication of the management messages.

In summary, compared with the prior art, the invention has the following beneficial effects:

1. the CAN bus is used as a plugboard management bus and an inter-plugboard signaling bus, the use requirements of plugboard management and inter-plugboard signaling are met through 2 signal wires, the use requirements comprise voice call signaling, sensor data and control signaling, the pin number of a backplane connector is greatly reduced, the equipment stability is improved, and the cost is optimized;

2. in the invention, any plugboard can be configured as machine frame management without a special machine frame management module;

3. the backplane connector only uses 10 bus signal wires, the complexity of the wiring of the backplane PCB is greatly reduced, 4 layers of PCBs are used for realizing the function which can be realized by more than 8 layers of PCBs in the prior art, and the development and maintenance cost is optimized to be one half of that of the existing scheme;

4. the management quantity of the plug board can manage 110 chips to the maximum, and the simultaneous use of 110 plug cards of a single frame and a single bus is realized.

Drawings

FIG. 1 is a diagram illustrating a relationship between a prior art card management bus and an inter-board signaling bus;

FIG. 2 is a prior art card management and inter-board signaling composite bus;

FIG. 3 is a schematic diagram of 2-wire CAN bus line connections;

FIG. 4 is a pin layout diagram of a backplane connector;

FIG. 5 is a logic structure diagram of a single-board BMC board;

fig. 6 is a diagram of the active/standby switching logic according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 3-4, a device for board management and multiplexing of inter-board signaling includes a box console, a CAN bus, and a BMC board; the subrack control console is connected with a BMC (baseboard management controller) plugboard through a CAN (controller area network) bus; wherein,

the CAN bus is used as a plugboard management bus and an inter-plugboard signaling bus, 2 signal wires are used for simultaneously meeting the requirements of plugboard management and inter-plugboard signaling use, the plugboard management and inter-plugboard signaling use requirements comprise voice call signaling, sensor data and control signaling, the pin number of a backplane connector is greatly reduced, the equipment stability is improved, the cost is optimized, a user access interface directly uses the CAN bus for output, RS232 or Ethernet interface secondary conversion is not needed, and full transparent access is supported;

be equipped with microprocessor in the BMC picture peg, the BMC picture peg uses microprocessor to carry out distributed substrate management, and the management content includes: monitoring information of voltage, power consumption and temperature of the plug board is sent to the CAN bus once per second; acquiring a command from the CAN bus, and executing power-on, power-off and restarting; each BMC board performs distributed baseboard management through a microprocessor, and implements level 2 setting of a management layer and a functional layer with a board function module, thereby implementing board N +1 redundancy backup, as shown in fig. 5 and 6.

The BMC plugboard is divided into an NODE card and an MASTER card, wherein any BMC plugboard is used as a NODE of the CAN bus, any BMC plugboard CAN be freely configured into the NODE card and the MASTER card, a microprocessor management chip is arranged on any BMC plugboard, the CAN bus is accessed through a CAN physical layer chip, each plugboard on the CAN bus is equal, and the BMC plugboard CAN be used as a management module without a special machine frame management module.

A method for managing plugboards and multiplexing inter-board signaling comprises the steps that firstly, a set of CAN communication lines are arranged on a backboard of a plug-in box, and an impedance coupling circuit of the lines (cables) is realized, as shown in figure 3; then, inserting the NODE card, and after the NODE card is inserted, sending an insertion registration message to the CAN bus, wherein the message carries the board card category information; the NODE card sends a heartbeat message every 1 second in the normal operation process; the NODE card is used for collecting the running conditions of the card, including voltage, power consumption, temperature and resource occupation conditions, and sending a monitoring message to the bus; the MASTER card monitors all bus messages, processes a plug-in card insertion event according to a registration message, processes a plug-out event of the plug-in card according to a heartbeat message overtime, and processes an alarm event of the plug-in card according to a monitoring message; the MASTER card can send out reset, power-on and power-off control for each NODE card.

All messages are divided into management messages and signaling messages, the priority of the management messages is higher than that of the signaling messages, and the management messages are communicated in a priority and non-blocking mode.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (3)

1. A device for managing plugboards and multiplexing inter-board signaling is characterized by comprising a plug-in box console, a CAN bus and a BMC plugboard; the subrack control console is connected with a BMC (baseboard management controller) plugboard through a CAN (controller area network) bus; wherein,

the CAN bus is used as a plugboard management bus and an inter-plugboard signaling bus;

be equipped with microprocessor in the BMC picture peg, the BMC picture peg uses microprocessor to carry out distributed substrate management, and the management content includes: monitoring information of voltage, power consumption and temperature of the plug board is sent to the CAN bus once per second; acquiring a command from the CAN bus, and executing power-on, power-off and restarting; each BMC plug board carries out distributed substrate management through a microprocessor, 2-level setting of a management layer and a functional layer is realized with a plug board functional module, and N +1 redundancy backup of the plug board is realized;

the BMC plug board is divided into an NODE card and an MASTER card, wherein any BMC plug board is used as a NODE of the CAN bus, any BMC plug board CAN be freely configured into the NODE card and the MASTER card, a microprocessor management chip is arranged on any BMC plug board, and the CAN bus is accessed through a CAN physical layer chip.

2. A method for board management and multiplexing of inter-board signaling for the apparatus according to claim 1, comprising the steps of:

(1) a set of CAN communication lines is arranged on a back plate of the plug-in box, and an impedance coupling circuit of the lines is realized;

(2) after the NODE card is inserted, an insertion registration message is sent to the CAN bus, and the message carries the board card category information;

the NODE card sends a heartbeat message every 1 second in the normal operation process;

the NODE card is used for collecting the running conditions of the card, including voltage, power consumption, temperature and resource occupation conditions, and sending a monitoring message to the bus;

(3) the MASTER card monitors all bus messages, processes a plug-in card insertion event according to a registration message, processes a plug-out event of the plug-in card according to a heartbeat message overtime, and processes an alarm event of the plug-in card according to a monitoring message;

(4) the MASTER card can send out reset, power-on and power-off control for each NODE card.

3. The method according to claim 2, wherein in step (2), the messages are divided into management messages and signaling messages, and the priority of the management messages is higher than that of the signaling messages, so that the management messages are communicated with each other preferentially without blocking.