Vehicle-mounted reinforced network switch

Abstract

The utility model discloses a vehicle-mounted reinforced network switch, a reinforced chassis provides a bearing part for the switch, a power panel provides direct current power supply for a board card, a switching daughter card carries out switch initialization, protocol processing, configuration management and maintenance, and a switching carrier board carries out switching operation according to actual use requirements of the chassis. Network ports are flexibly configured by utilizing resources led out by the switching daughter cards, the interface board executes the installation layout of each functional interface device of the switch and carries out the switching work of providing network ports and management ports to the outside, and the state indication board provides 24 paths of gigabit network ports, 2 paths of 10 gigabit optical ports, 1 path of management network ports, system alarm, board card state and power supply power-on and power-off state indication. The switch provides 24 paths of 10Mbps / 100Mbps / 1000Mbps self-adaptive network switching interfaces and 2 paths of 10-gigabit optical fiber transmission interfaces, has the characteristics of simple structure, light weight, low power consumption, wide power supply range, overvoltage and overcurrent protection, polarity reverse connection protection and vibration impact resistance, and can be widely applied to multiple fields.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, in particular to a vehicle-mounted ruggedized network switch. BACKGROUND

[0002] The network switch is a high-performance, flexible and secure network device, which improves the overall network performance by implementing routing, forwarding strategy, VLAN division, policy control and other functions, and is widely used in large networks or scenarios requiring routing functions, such as data centers, sub-network interconnection and various complex network environments.

[0003] However, in some harsh environments such as temperature, humidity, vibration, and electromagnetic environment, such as industrial control, transportation and other fields, ordinary network switches are difficult to meet the use requirements, so how to make the switch have the ability to work stably and reliably in harsh environments through special design has become one of the directions that the technical personnel in the field want to study. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to overcome the technical defects of the prior art, and to provide a vehicle-mounted ruggedized network switch, which has the characteristics of simple structure, light weight, low power consumption, wide power supply range, overvoltage, overcurrent protection, polarity reverse connection protection, and anti-vibration impact, and can be widely used in multiple fields.

[0005] The purpose of the present application is achieved by the following technical solutions:

[0006] In a first aspect, the present application provides a vehicle-mounted ruggedized network switch, which comprises a ruggedized case and a power board, a switching board, an interface board and a status indication board in the ruggedized case, the switching board comprises a switching sub-card and a switching carrier board, the switching sub-card and the switching carrier board are connected through an HST5-1.0-S2x80 high-speed connector, the interface board is connected with 24-way network ports and 1-way management network / serial ports designed on the switching board through a CTOLC-140-02-L-Q-A connector and a flexible adapter plate with a CSOLC-140-02-L-Q-A connector.

[0007] The ruggedized case is used to provide a bearing for the switch;

[0008] The power board is used to provide direct current power supply for the board card;

[0009] The switching board is used to perform the core switching and management functions of the switch, the switching sub-card performs switch initialization, protocol processing, configuration management and maintenance, and the switching carrier board flexibly configures network ports according to the actual use demand of the case by using the resources led out by the switching sub-card;

[0010] Interface board, used for implementing the installation layout of various functional interface devices of the switch, and performing switching work of externally provided network ports and management ports, the network ports adopt FX1031Z02F056B1N-B connectors, and the management ports adopt FX104Z02F086KN-B connectors;

[0011] Status indication board, used for providing 24 gigabit network ports, 2 10-gigabit optical ports, 1 management network port, system alarm, board status and power on / off status indication.

[0012] In a possible implementation, the switching sub-card adopts a CTC7132 SOC chip, the CTC7132 SOC chip is connected with two single-capacity 8Gbit DDR3 memories and an 8Gbit EMMC, and provides 24 groups of SerDes, 2 management SGMII interfaces, a PCIE GEN2x1 interface, 3 UART interfaces, 4 I2C interfaces, a serial lighting signal group and 32 GPIO (16 3V3 and 16 1V8) signals through an HST5-1.0-S2x80 high-speed connector.

[0013] The switching sub-card configures 6 groups of SerDes into 6 QSGMII interfaces and interworks with PHY chips, and the PHY chips convert 6 QSGMII inputs into 24 1000BASE-T interface outputs.

[0014] The switching sub-card also configures 2 groups of SerDes into 2 XFI interfaces and interworks with SFP+ optical modules, and converts into 2 10-gigabit optical port outputs.

[0015] In a possible implementation, the switching board uses 6 QSGMII interfaces and 2 XFI interfaces of the switching sub-card to output 26 switching ports, the 6 QSGMII buses are converted into 24 1000BASE-T interfaces through 3 PHY chips and are led out through connectors, and the 2 XFI interfaces are led out to an optical cage in the board through SFP+ ports and support 10GBASE-X mode.

[0016] In a possible implementation, the switching sub-card includes a CPU, and a control bus of the CPU includes I2C, SPI, SGMII, SMI and general GPIO pins.

[0017] A CPU_I2C pin of the CPU is used to connect various I2C devices in the board, and a PPU_I2C pin of the CPU is used to connect optical modules.

[0018] An SPI pin is used to connect an SPI flash for booting of the board.

[0019] In a possible implementation, the CORE clock of the switching sub-card chip CTC7132 is generated by a local differential 50M crystal oscillator, and the switching carrier board is provided with a 3-way 25M clock extracted from the switching sub-card and provided to the switching carrier board PHY, and a 25M crystal is used alone to provide a clock for the management port PHY.

[0020] In a possible implementation, the switching machine uses a watchdog AT706 reset circuit on the switching sub-card as the main reset of the system, and the watchdog WD circuit gives a 200ms low-level reset signal to reset the CPU, the PHY, and the shift register chip of the status indicator light after the board card is powered on.

[0021] In a possible implementation, the power supply of the switching sub-card is directly input from a 12V power supply through the welding wire of the switching carrier board power supply connector, and is converted into the voltage required by the switching sub-card through the 4644 power supply chip and the 4630 power supply chip.

[0022] The switching carrier board converts the power supply of the board PHY chip through the 4644 power supply chip and converts a 5V voltage through the IS6605 for the panel timer.

[0023] In a possible implementation, the switching machine is externally connected with a 28V DC voltage, which is transmitted to the power supply board after being filtered, protected, and switched, and the power supply board selects an SMS28S12.

[0024] In a possible implementation, the interface board is installed with 24 network port connectors and 1 management port connector and is fixed to the rear panel by screws.

[0025] The rear panel is installed with 1 power supply connector Y27B-1203ZJBM, 2 optical port connectors JYSK22N07Z, and 1 grounding column.

[0026] The rear panel and the interface board jointly provide a connection interface to the outside.

[0027] In a possible implementation, the switching machine further includes a switching system, and the switching system includes a configuration management service module, an L23 protocol module, a routing service module, a chip adaptation service module and a chip adaptation agent, a platform management module, a line card management module, and a chip SDK.

[0028] The configuration management service module supports a management interface and is responsible for storing and managing all configuration data of the switching device.

[0029] The L23 protocol module executes a spanning tree protocol, an OSPF, a RIP, and a multicast,

[0030] The routing service module integrates and manages all L23 protocol modules, and sends configuration information or protocol calculation results to a forwarding chip through a chip adaptation interface module.

[0031] The chip adaptation service module and the chip adaptation agent convert and convey the configuration instruction of the routing service module to the driver of the switching chip, and realize configuration update by directly operating the switching chip;

[0032] The platform management module monitors the hardware state of the switching system, and provides a hardware-independent view for the upper-layer protocol;

[0033] The line card management module is specially used for managing the peripheral chips on the board card,

[0034] The chip SDK includes a CTC layer, a SYS layer and a DRV layer, and is responsible for the low-level switching chip configuration and management, and the DRV layer runs in the kernel space as a kernel module and communicates with the switching chip through a PCIe interface.

[0035] The above main scheme of the application and each further selected scheme thereof can be freely combined to form multiple schemes, all of which are the schemes that can be adopted and claimed by the application; and the application can also be freely combined between (each non-conflicting selection) and other selections. Those skilled in the art can understand that there are multiple combinations according to the prior art and common knowledge after understanding the schemes of the application, all of which are the technical schemes claimed by the application, and are not listed here.

[0036] The application discloses a vehicle-mounted reinforced network switch, and the reinforced case provides a bearing for the switch, wherein the power board provides direct-current power supply for the board card, the switching sub-card performs switch initialization, protocol processing, configuration management and maintenance, the switching carrier board flexibly configures network ports according to actual use requirements of the case by using resources led out by the switching sub-card, the interface board performs installation and layout of various functional interface devices of the switch, and performs switching work of providing network ports and management ports externally, and the state indication board provides 24 gigabit network ports, 2 gigabit optical ports, 1 management network port, system alarms, board card states and power on / off state indications. The switch provides 24 10Mbps / 100Mbps / 1000Mbps adaptive network switching interfaces and 2 gigabit optical transmission interfaces, has the characteristics of simple structure, light weight, low power consumption, wide power supply range, overvoltage protection, overcurrent protection, polarity reverse connection protection and vibration impact resistance, and can be widely applied to multiple fields. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical schemes of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0038] Figure 1A schematic diagram of a vehicle-mounted reinforced network switch is shown.

[0039] Figure 2 A front view of the vehicle-mounted reinforced network switch is shown.

[0040] Figure 3 A schematic diagram of a switching sub-card is shown.

[0041] Figure 4 A schematic diagram of a switching board is shown.

[0042] Figure 5 A schematic diagram of a switching board control and management channel is shown.

[0043] Figure 6 A schematic diagram of a switching board clock implementation is shown.

[0044] Figure 7 A schematic diagram of a system reset is shown.

[0045] Figure 8 A power supply topology diagram of the switching board is shown.

[0046] Figure 9 A DC / DC converter circuit design diagram is shown.

[0047] Figure 10 A switching system software architecture diagram is shown.

[0048] Icon; 1 - interface board; 2 - switching board; 3 - EMI filter; 4 - switching sub-card; 5 - power supply board; 6 - status indication board. DETAILED DESCRIPTION

[0049] The embodiments of the present application will be described in detail hereinafter with specific reference on the attached drawings. It is to be noted that the following description is by way of example only and is not intended to limit the scope of the application. Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. Various substitutions and modifications can be made by those skilled in the art, without departing from the spirit of the application. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

[0050] Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor, fall within the scope of protection of the present application.

[0051] In some temperature, humidity, vibration, electromagnetic environment is more severe conditions, such as industrial control, transportation and other fields, ordinary network switch is difficult to meet the needs of use, therefore, how to make the switch designed to be able to work stably and reliably in harsh environment becomes one of the directions that the skilled in the art should study.

[0052] Therefore, the embodiment of the present application provides a vehicle-mounted reinforced network switch, which can provide 24 10Mbps / 100Mbps / 1000Mbps adaptive network switching interfaces and 2 10G optical fiber transmission interfaces, has the characteristics of simple structure, light weight, low power consumption, wide power supply range, overvoltage and overcurrent protection, polarity reverse connection protection and anti-vibration impact, and can be widely applied to industrial control, transportation and other fields. Next, it will be described in detail.

[0053] Please refer to Figure 1 and Figure 2 , Figure 1 Fig. 1 shows a schematic diagram of a vehicle-mounted reinforced network switch according to an embodiment of the present application, Figure 2 Fig. 1 shows a schematic diagram of a vehicle-mounted reinforced network switch according to an embodiment of the present application,

[0054] The reinforced chassis is used to provide a bearing for the switch;

[0055] The power board is used to provide DC power supply for the board card;

[0056] The switching board is used to perform the core switching and management functions of the switch, the switching sub-card performs switch initialization, protocol processing, configuration management and maintenance, and the switching board flexibly configures network ports according to the actual use demand of the chassis by using the resources led out by the switching sub-card;

[0057] The interface board is used to perform the installation and layout of various functional interface devices of the switch, and to perform the switching work of the network port and the management port provided externally, the network port uses FX1031Z02F056B1N-B connector, and the management port uses FX104Z02F086KN-B connector;

[0058] The state indication board is used to provide 24 10G network ports, 2 10G optical ports, 1 management network port, system alarm, board card state and power on / off state indication.

[0059] The reinforced chassis is designed to be reinforced to withstand higher mechanical stress, such as vibration, impact, etc., to protect the internal electronic components from physical damage, and the power board is responsible for converting the external input power into the required DC voltage for each board card inside, ensuring the continuous and stable power supply of the switch. The switching board is composed of a switching sub-card and a switching carrier board, connected through a high-speed connector (HST5-1.0-S2x80). The switching sub-card is responsible for the initialization, network protocol processing, configuration management and maintenance of the switch, etc. The switching carrier board configures network ports according to actual needs. The interface board contains all external functional interfaces, such as network ports, management ports, etc., connected to the flexible adapter board through the CTOLC-140-02-L-Q-A connector, and then connected to the network resources of the switching board. The network port uses FX1031Z02F056B1N-B connector, the management port uses FX104Z02F086KN-B connector, and the status indicator board displays the status of the switch, including the status display of 24 gigabit network ports, 2 gigabit optical ports, 1 management network port, as well as system alarm, board working status and power status indicator lights. Through the J30J-37ZKNP5 connector and the matching J30J-37TJL plug, the status signals on the switching board are transmitted to the status indicator board. The on-off of the LED lights directly reflects the different states, and these on-off signals are transmitted to the front panel of the device through the light guide column.

[0060] The switching sub-card uses CTC7132 SOC chip, which is connected with two pieces of single-capacity 8Gbit DDR3 memory and 8Gbit EMMC, and provides 24 groups of SerDes, 2-way management SGMII interface, PCIE GEN2x1 interface, 3-way UART interface, 4-way I2C interface, serial lighting signal group and 32-way GPIO (16-way 3V3, 16-way 1V8) signals through HST5-1.0-S2x80 high-speed connector;

[0061] The switching sub-card configures 6 groups of SerDes into 6-way QSGMII and interworks with PHY chip, and the PHY chip converts 6-way QSGMII input into 24-way gigabit electrical port output;

[0062] The switching sub-card also configures 2 groups of SerDes into 2-way XFI and interworks with SFP+ optical module, and converts into 2-way gigabit optical port output. In addition Figure 1 The EMI filter 3 is also shown to suppress electromagnetic interference.

[0063] Figure 3The schematic diagram of the switching sub-card is shown, the switching sub-card uses CTC7132 SOC chip, meanwhile the chip is equipped with two pieces of DDR3 memory, each piece has a capacity of 8Gbit, providing a cache space for the switching sub-card to temporarily store and process network data, the switching sub-card is equipped with an EMMC with a capacity of 8Gbit, storing firmware, configuration files and possible log information. The HST5-1.0-S2x80 connector is used as a bridge between the switching sub-card and the switching board, 24 groups of SerDes are used for high-speed data transmission, which are configured as 6-way QSGMII (Quad Small Form-factor Pluggable Gigabit Interface) connected with PHY chips, converted into 24 gigabit electrical ports to meet the demand of a large number of Ethernet connections.

[0064] The 2-way management SGMII interface is connected with the management network port, the PCIe GEN2x1 interface provides expansion capability, and other high-speed interface cards or accelerators are externally connected. The UART, I2C interface and GPIO signal are used as low-speed interface and control signal for debugging, state monitoring and controlling external devices of the equipment, such as LED indicator and hardware switch. The 2 groups of SerDes are specially configured as 2-way XFI interface, connected with SFP+ optical module, realizing 2-way gigabit optical port output, adapting to the transmission demand of long distance and high rate.

[0065] The switching board uses the 6-way QSGMII and 2-way XFI of the switching sub-card to output 26 switching ports, the 6-way QSGMII bus is converted into 24-way 1000BASE-T interface through 3 PHY chips and led out through the connector, and the 2-way XFI is led out to the in-board optical cage through SFP+ port and supports 10GBASE-X mode.

[0066] Figure 4 The schematic diagram of the switching board is shown, which includes 6-way QSGMII converted into 24-way gigabit electrical port, the gigabit electrical port passes through 3 pieces of SK21108 PHY chip, each chip is responsible for converting two QSGMII (each supporting 4-way Gigabit Ethernet) into 8-way 1000BASE-T (i.e. gigabit Ethernet) interface. The 2-way XFI interface on the switching sub-card is used to connect SFP+ optical module, located in the in-board optical cage, supporting 10GBASE-X mode, providing high-speed optical fiber connection capability for the equipment.

[0067] In addition to the data transmission port, 1-way 1000BASE-T management network port is specially led out, which is used for remote management and monitoring the state of the switch, and 1-way RS232 debugging serial port is also included, which is convenient for on-site technical personnel to troubleshoot and system debug.

[0068] The exchange sub-card includes a CPU, and a control bus of the CPU includes I2C, SPI, SGMII, SMI and general GPIO pins;

[0069] A CPU_I2C pin of the CPU is used for connecting various I2C devices inside the board card, and a PPU_I2C of the CPU is used for connecting an optical module;

[0070] The SPI pin is used for connecting an SPI flash for boot starting of the board card.

[0071] Figure 5 A schematic diagram of the exchange board control and management channel proposed in the embodiment of the application is shown, the I2C bus is divided into CPU_I2C and PPU_I2C, the CPU_I2C is responsible for connecting various I2C devices inside the board card, such as EEPROM, temperature sensor, voltage regulation module and the like, and the configuration reading and writing and state monitoring of these elements. The PPU_I2C is specific to the communication of the optical module, interacts with the optical module through the I2C interface, performs identity authentication, working state checking and configuration adjustment.

[0072] The SPI bus is used for connecting the SPI Flash, the SPI Flash stores the boot loader and initial configuration file required for system starting. The SGMII is used for connecting the physical layer (PHY) chip and the media access control (MAC) layer, and supports high-speed data transmission. The SMI (Serial Management Interface) is an interface for managing the PHY chip, and allows the upper layer software to configure the working parameters of the PHY and query state information. The GPIO pin is used as a general input and output, and can be used for realizing various control functions such as LED state indication, hardware reset, alarm signal output and the like.

[0073] The CORE clock of the exchange sub-card chip CTC7132 is generated by a local differential 50M crystal oscillator, and the 3-way 25M clock provided by the exchange sub-card is provided to the exchange board PHY, and a 25M crystal is used alone to provide the clock for the management port PHY.

[0074] Figure 6 A clock implementation schematic diagram of the exchange board proposed in the embodiment of the application is shown, the CORE clock of the CTC7132 chip of the exchange sub-card chip is derived from a local differential 50MHz crystal oscillator. The differential crystal oscillator generates two signals with a phase difference of 180 degrees, and through the Silicon Labs clock scheme, three 25MHz clock signals are further derived from the 50MHz CORE clock, and the three clock signals are used as the key timing control source of the exchange board PHY module.

[0075] In addition, the system also contains a separate 25MHz crystal, dedicated to the management of the PHY (SK21101) to generate clock signals. To ensure that the management interface in any case can maintain independent operation, even if the main clock system fails, but also to continue network management and monitoring, improve system reliability and maintainability.

[0076] Switch using the exchange of sub-card watchdog AT706 reset circuit as the main reset of the system, after the card power on watchdog WD circuit to give a 200ms low level reset signal to reset CPU, PHY, state indicator shift register chip.

[0077] Figure 7 The system reset schematic diagram proposed by the embodiment of the application is shown, the watchdog reset circuit (AT706) monitors the running state of the system, prevents system deadlock caused by software errors or hardware failure, wherein the AT706 not only monitors the system, but also provides a key reset signal when the board is started. When the system is powered on, AT706 will generate a low level signal lasting 200ms. It is used as a global reset signal, affecting multiple key components, including CPU, PHY (physical layer interface chip) and state indicator shift register chip, ensuring that all related components are initialized at the same time, avoiding timing problems and potential conflicts during startup.

[0078] CPU reset ensures that the processor starts executing instructions from a known initial state, PHY reset makes the network PHY layer chip return to the default setting, ready for network connection initialization, and the state indicator shift register during reset can ensure that all LED state indicators are in the expected state during startup.

[0079] The power supply of the exchange sub-card is directly input by the 12V power supply through the exchange carrier power connector welding, and is converted into the voltage required by the exchange sub-card through the 4644 power chip and the 4630 power chip;

[0080] The exchange carrier board converts the PHY chip power supply on the board through the 4644 power chip, and converts a 5V voltage through IS6605 for the panel timer.

[0081] Figure 8The power supply topology of the switching board proposed in the embodiment of the application is shown. A 12V DC power supply is directly input through the power supply connector on the switching board, and then converted through two key power management chips, 4644 and 4630, to meet the different voltage requirements of various ICs inside the switching daughter card. The 4644 power supply chip is responsible for converting the input 12V power supply into the voltage required by the PHY chip on the switching daughter card, and also supplies power to the PHY chip on the board through the 4644 chip on the board. The 4630 power supply chip is also responsible for converting the voltage to supply to other components in the switching daughter card except the PHY. The IS6605 chip is used to convert a 5V voltage from the existing power supply line, especially for the timer on the panel.

[0082] The switch is connected with a 28V DC voltage, which is delivered to the power supply board after being filtered, protected by a fuse, and switched by an electronic switch. The power supply board selects SMS28S12.

[0083] Figure 9 A DC / DC converter circuit design diagram proposed in the embodiment of the application is shown. Before the power supply is input to the converter, it will first pass through a filter to filter out noise and ensure power quality. Then, the fuse prevents excessive current from damaging the downstream circuit. The electronic switch is used to control the opening and closing of the power supply to realize the on-off control of the circuit.

[0084] The DC / DC conversion core (SMS28S12) then serves as a high-efficiency DC / DC converter, responsible for reducing the 28V voltage to 12V. During this conversion process, the high-frequency switching operation inside the converter is combined with passive elements such as inductors, capacitors, and precision control circuits to achieve voltage conversion and stable output. The converter has multiple built-in protection functions, including output overvoltage protection, output overcurrent protection, short circuit protection, and overtemperature protection. These protection mechanisms can quickly respond in abnormal conditions to avoid hardware damage. The circuit has stable voltage output and good dynamic response characteristics. When the load changes, the converter can quickly adjust to maintain stable output voltage.

[0085] The interface board is installed with 24 network port connectors and 1 management port connector and is fixed to the rear panel by screws;

[0086] The rear panel is installed with 1 power connector Y27B-1203ZJBM, 2 optical port connectors JYSK22N07Z, and 1 grounding column;

[0087] The rear panel and the interface board jointly provide connection interfaces to the outside.

[0088] 24 network port connectors (such as the FX1031Z02F056B1N-B model mentioned earlier) allow the switch to connect with 24 different network devices at a rate of 10 Mbps, 100 Mbps, or 1000 Mbps, and 1 management port connector is a dedicated interface for device configuration, monitoring, and troubleshooting, using the FX104Z02F086KN-B connector to ensure safe transmission of management data and efficient management. The power connector Y27B-1203ZJBM provides stable power access for the switch. The 2 optical port connectors JYSK22N07Z provide 2 routes of 10G optical fiber transmission interface, and 1 grounding column is used for electrical grounding.

[0089] The ruggedized chassis adopts a 19-inch standard rack-mounted chassis structure, with an outer dimension of 482.6mm (width) x 88.2mm (height) x 345mm (depth);

[0090] The ruggedized chassis is composed of a front panel, a rear panel, side panels, a cover plate, and a bottom plate. The front panel is equipped with a handle, switches, fuses, and a timer.

[0091] The ruggedized chassis is made of aluminum alloy material and is treated with conductive oxidation. Conductive sealing rings are added at the joint to ensure that the chassis is completely sealed.

[0092] The ruggedized chassis is composed of a front panel, a rear panel, side panels, a cover plate, and a bottom plate. The front panel is equipped with a handle, switches, fuses, and a timer. The design of the switch conforms to the general 19-inch rack mounting standard, and a 2U height is adopted to facilitate unified deployment and management in data centers or other environments requiring rack installation. The size is 482.6mm (width) x 88.2mm (height) x 345mm (depth), ensuring that it can fit into the aforementioned 19-inch rack.

[0093] Aluminum alloy is used as the chassis material, and conductive oxidation treatment enhances the wear resistance and corrosion resistance of the aluminum alloy surface, while also improving the electromagnetic compatibility (EMC) of the chassis. Conductive sealing rings are added at the joints of the chassis, which not only enhance the physical sealing of the chassis to prevent dust and moisture from entering, but also form a continuous conductive path to effectively suppress electromagnetic interference (EMI), protect the internal circuit from external electromagnetic signals, and prevent internal signal leakage. Through the design of the sealing ring, the chassis is completely sealed internally.

[0094] The switch further comprises a switching system, the switching system comprising a configuration management service module, an L23 protocol module, a routing service module, a chip adaptation service module and a chip adaptation agent, a platform management module, a line card management module, and a chip SDK;

[0095] The configuration management service module supports a management interface and is responsible for storing and managing all configuration data of the switching device;

[0096] L23 protocol modules execute spanning tree protocol, OSPF, RIP and multicast,

[0097] The routing service module integrates and manages all L23 protocol modules, and sends configuration information or protocol calculation results to the forwarding chip through the chip adaptation interface module.

[0098] The chip adaptation service module and the chip adaptation agent convert and convey the configuration instructions of the routing service module to the driver of the switching chip, and realize configuration update by directly operating the switching chip.

[0099] The platform management module monitors the hardware state of the switching system, and provides a hardware-independent view for the upper protocol.

[0100] The line card management module is specially used for managing peripheral chips on the board card.

[0101] The chip SDK includes a CTC layer, a SYS layer and a DRV layer, and is responsible for low-level switching chip configuration and management. The DRV layer runs in the kernel space as a kernel module, and communicates with the switching chip through the PCIe interface.

[0102] In a possible embodiment, Figure 10 A switching system software architecture proposed by the embodiment of the application is shown, in which a text-based interface can directly input command to configure and manage the switch. The configuration management service module supports CLI, Web interface and other management interfaces, and is responsible for storing and managing all configuration data of the switching device. The L23 protocol module executes functions such as spanning tree protocol (IEEE 802.1D), OSPF (Open Shortest Path First), RIP (Routing Information Protocol) and multicast, and the system application program includes TFTP (Trivial File Transfer Protocol), FTP (File Transfer Protocol), Syslog (system log), SSH (Secure Shell) and the like, and provides services for file transfer, log recording and secure remote access. The routing service module integrates and manages all L23 protocol modules, and sends configuration information or protocol calculation results to the forwarding chip through the chip adaptation interface module. The platform adaptation layer and the chip adaptation service module provide an abstract interface, ensuring that the routing service module and the platform management module can work seamlessly on different hardware platforms. The platform management module monitors the hardware state of the switching system, and provides a hardware-independent view for the upper protocol. The line card management module is specially used for managing peripheral chips on the board card. The chip adaptation service module and the chip adaptation agent are responsible for converting and conveying the configuration instructions of the routing service module to the driver of the switching chip, and realizing configuration update by directly operating the switching chip.

[0103] For special messages requiring CPU processing, the switch chip transmits the message data directly into the system memory through the DMA (Direct Memory Access) technology, and then the message receiving module distributes the message data to the corresponding software processing unit or the TCP / IP protocol stack for subsequent processing.

[0104] Compared with the prior art, the switch provided by the embodiment of the application has the advantages of simple structure, light weight, low power consumption, wide power supply range, overvoltage and overcurrent protection, polarity reverse connection protection, vibration and impact resistance, and wide application in multiple fields.

[0105] The application is not limited in this way, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A vehicle-mounted hardened network switch, comprising: The switch includes a ruggedized chassis and a power board, a switching board, an interface board and a state indication board in the ruggedized chassis, the switching board includes switching sub-cards and a switching carrier board, the switching sub-cards and the switching carrier board are connected through HST5-1.0-S2x80 high-speed connectors, the interface board is connected with 24-way network ports and 1-way management network / serial ports designed on the switching board through a flexible adapter plate with a CSOLC-140-02-L-Q-A connector through a CTOLC-140-02-L-Q-A connector; The ruggedized chassis is used for providing a bearing for the switch; The power board is used for providing direct current power supply for the board card; The switching board is used for performing core switching and management functions of the switch, the switching sub-cards perform switch initialization, protocol processing, configuration management and maintenance, and the switching carrier board configures network ports according to actual use requirements of the chassis by using resources led out by the switching sub-cards; The interface board is used for performing installation and layout of various functional interface devices of the switch, and performing switching work of network ports and management ports provided externally, the network ports adopt a FX1031Z02F056B1N-B connector, and the management ports adopt a FX104Z02F086KN-B connector; The state indication board is used for providing 24-way gigabit network ports, 2-way 10-gigabit optical ports, 1-way management network ports, system alarm, card state and power on / off state indication.

2. The vehicle-mounted ruggedized network switch of claim 1, wherein, The switching sub-card adopts a CTC7132 SOC chip, the CTC7132 SOC chip is connected with two single-capacity 8Gbit DDR3 memories and an 8Gbit EMMC, and provides 24 groups of SerDes, 2-way management SGMII interfaces, PCIE GEN2x1 interfaces, 3-way UART interfaces, 4-way I2C interfaces, a serial lighting signal group and 32-way GPIO signals through the HST5-1.0-S2x80 high-speed connector, and 16-way 3V3 and 16-way 1V8 are included in the 32-way GPIO; The switching sub-card configures 6 groups of SerDes into 6-way QSGMII and intercommunicates with PHY chips, and the PHY chips convert 6-way QSGMII inputs into 24-way gigabit electrical port outputs; The switching sub-card also configures 2 groups of SerDes into 2-way XFI and intercommunicates with SFP+ optical modules, and converts into 2-way 10-gigabit optical port outputs.

3. The vehicle-mounted ruggedized network switch of claim 2, wherein, The switching carrier board outputs 26 switching ports through 6-way QSGMII and 2-way XFI of the switching sub-card, the 6-way QSGMII bus is converted into 24-way 1000BASE-T interfaces through 3 PHY chips and is led out through a connector, and the 2-way XFI is led out to an optical cage sub-board in the board through SFP+ ports and supports 10GBASE-X mode.

4. The vehicle-mounted ruggedized network switch of claim 2, wherein, The switching sub-card includes a CPU, and a control bus of the CPU includes I2C, SPI, SGMII, SMI and general GPIO pins; A CPU_I2C pin of the CPU is used for connecting various I2C devices in the board card, and a PPU_I2C of the CPU is used for connecting optical modules; An SPI pin is used for connecting an SPI flash for boot starting of the board card.

5. The vehicle-mounted ruggedized network switch of claim 2, wherein, The CORE clock of the switching sub-card chip CTC7132 is generated by a local differential 50M crystal oscillator, and the switching board provides a 3-way 25M clock to the switching board PHY through the 3-way 25M clock led out by the switching sub-card, and a 25M crystal is used alone to provide a clock for the management port PHY.

6. The vehicle-mounted ruggedized network switch of claim 1, wherein, The switching sub-card chip CTC7132 is generated by a local differential 50M crystal oscillator, and the switching board provides a 3-way 25M clock to the switching board PHY through the 3-way 25M clock led out by the switching sub-card, and a 25M crystal is used alone to provide a clock for the management port PHY.

7. The vehicle-mounted ruggedized network switch of claim 3, wherein, The power supply of the switching sub-card is directly input by a 12V power supply through welding wires of the switching board power supply connector, and is converted into the voltage required by the switching sub-card through the 4644 power supply chip and the 4630 power supply chip. The switching board converts the power supply of the board PHY chip through the 4644 power supply chip, and converts a 5V voltage through the IS6605 to supply the panel timer.

8. The vehicle-mounted ruggedized network switch of claim 1, wherein, The switching machine is externally connected with a 28V DC voltage, which is transmitted to the power supply board after filtering, fuse and electronic switch, and the power supply board selects SMS28S12.

9. The vehicle-mounted ruggedized network switch of claim 1, wherein, The interface board is provided with 24 network port connectors and 1 management port connector and is fixed to the rear panel by screws; The rear panel is provided with 1 power supply connector Y27B-1203ZJBM, 2 optical port connectors JYSK22N07Z and 1 grounding column; The rear panel and the interface board jointly provide a connection interface to the outside.

10. The vehicle-mounted ruggedized network switch of claim 1, wherein, The switching machine further comprises a switching system, the switching system comprises a configuration management service module, an L23 protocol module, a routing service module, a chip adaptation service module and a chip adaptation agent, a platform management module, a line card management module and a chip SDK; The configuration management service module supports a management interface and is responsible for storing and managing all configuration data of the switching device; The L23 protocol module executes spanning tree protocol, OSPF, RIP and multicast, The routing service module integrates and manages all L23 protocol modules, and sends configuration information or protocol calculation results to the forwarding chip through the chip adaptation interface module; The chip adaptation service module and the chip adaptation agent convert and convey the configuration instructions of the routing service module to the driver of the switching chip to realize configuration update by directly operating the switching chip; The platform management module monitors the hardware state of the switching system and provides a hardware-independent view for the upper protocol; The line card management module is specially used for managing the peripheral chip on the board card, The chip SDK comprises a CTC layer, a SYS layer and a DRV layer, is responsible for low-level switching chip configuration and management, and the DRV layer runs in the kernel space as a kernel module and communicates with the switching chip through a PCIe interface.

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