KR100552673B1 - Apparatus and Method for Routing System Management using I2C Connection - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a routing system management apparatus and method using an I2C connection configuration.

2. The technical problem to be solved by the invention

According to the present invention, the main processor block obtains status information or performs status management commands of other blocks through an I2C connection configuration that can be easily expanded in a routing system and find and switch over a channel that has failed when a failure occurs. It is to provide a routing system management device and method using I2C connection configuration that improves stability and facilitates design and implementation.

3. Summary of Solution to Invention

The present invention provides a routing system management apparatus, wherein the main processor has a dual structure of an active processor and a standby processor, collects alarm data, and performs a management function of each board mounted in the routing system slot. Processing means for performing; When the processing means transfers the active processor to the standby processor, the standby processor separates the I2C (Inter-IC) channel of the active processor from the lower I2C channel and its own I2C. I2C mediating means for connecting a channel to a lower I2C channel group, selectively connecting an upper I2C channel to a plurality of lower I2C channel groups, and performing a switching function for an abnormal channel when an abnormality occurs in the lower I2C channel; A state management and alarm means having an I2C connection configuration in a point-to-point manner with the I2C medium means and for performing alarm collection and management commands of a slave board; And I2C networking means for connecting said processing means, I2C mediated means, state management and alert means.

4. Important uses of the invention

The present invention is used in network systems and the like.

Router, State Management, Alarm, I2C, I2C Switching, I2C Channel Switching, Operation Program

Description

Apparatus and Method for Routing System Management using I2C Connection}             

1 is a configuration diagram of an embodiment of a routing system management apparatus according to the present invention.

FIG. 2 is a detailed block diagram of an embodiment of the I2C intermediate block of FIG. 1; FIG.

Figure 3 is an embodiment explanatory diagram showing a slot ID of the routing system management apparatus according to the present invention.

Figure 4 is a detailed configuration diagram of one embodiment of a slave board of the routing system management apparatus according to the present invention.

5 is a flowchart illustrating one embodiment of a routing system management method according to the present invention;

* Explanation of symbols for the main parts of the drawings

110: main processor block 111: main processor

112: I2C bus buffer 120: I2C channel

121: reset signal line 130, 160: backplane

140: I2C parameter block 141: master switch

142: AND device 143: I2C switch

144, 150 I2C channel 161: slot ID

162: main power 163: auxiliary power

170: slave board 180: status management and alarm block

181: I2C bus buffer 182: data converter

183: programmable logic device

The present invention is a routing system using an I2C connection configuration that can improve the reliability in the operation management of the system by using the I2C (Inter-IC) connection configuration having a failure response capability in the status management and alarm collection in the routing system It relates to a management device and a method thereof.

A router is a device that connects separate networks using the same transport protocol. The router connects network layers with each other, determines nodes in different networks or its own networks according to a routing table, and determines the most efficient path among the various routes. By sending packets selectively, the router performs flow control, configures multiple subnetworks within the internetwork, and performs various network management functions.

As a conventional technique used for collecting system signals and alarms in a router system, a programmable logic device in a main processor board allocates several input / output pins to each board in a system and uses them for state management and alarm collection. The method has a limitation in system expansion, and there is a problem in that the types of alarm signals that can be collected and control methods that can be managed are limited by the limitation of input / output pins per board.

In addition, there is a method using UART (Universal Asynchronous Receiver / Transmitter) serial communication, but there is a problem that the number of boards that can be managed because the shared bus method is impossible, can be limited to the number of UART channels of the main processor.

In addition, there is a method using Joint Test Action Group (JTAG), but since most processors do not have a built-in channel for JTAG communication, an additional JTAG device having a host interface function needs to be used. There was a problem that the complexity is increased.

In the router system, a stable and reliable communication method is required for system management and alarm signal collection rather than high speed data transmission. In addition, the connection configuration between system blocks for system management and alarm signal collection should be able to easily cope with system expansion. Therefore, although the speed is somewhat slow, the connection configuration can be varied, and there are many examples of using the I2C method, which is widely used in related devices, for system management and alarm signal collection. I2C, also referred to as Inter-IC, is a two-wire, bi-directional serial bus that provides a communication link between integrated circuits. However, an open-drain scheme on the I2C bus can cause the SDA and SCL signals that make up the I2C bus to be held at high or low levels, resulting in the entire I2C bus going down if a particular device bites the I2C bus.

Therefore, if I2C is to be used for system management and alarm signal collection in a router system, there is a need for a connection configuration method for easily expanding a system along with a method for dealing with a failure of a specific I2C channel.

The present invention is proposed to solve the above problems, the main processor block is the state of the other blocks through the I2C connection configuration that can be easily expanded in the routing system and can find and replace the channel causing the failure in the event of a failure It is an object of the present invention to provide a routing system management apparatus and method using an I2C connection configuration that improves reliability and stability, and facilitates design and implementation in acquiring information or executing state management commands.

The apparatus of the present invention for achieving the above object, in the routing system management device, the main processor is a dual structure of the processor in the active state and the standby state, collecting alarm data, mounted in the routing system slot Processing means for performing a management function of each board; When the processing means transfers the active processor to the standby processor, the standby processor separates the I2C (Inter-IC) channel of the active processor from the lower I2C channel and its own I2C. I2C mediating means for connecting a channel to a lower I2C channel group, selectively connecting an upper I2C channel to a plurality of lower I2C channel groups, and performing a switching function for an abnormal channel when an abnormality occurs in the lower I2C channel; A state management and alarm means having an I2C connection configuration in a point-to-point manner with the I2C medium means and for performing alarm collection and management commands of a slave board; And I2C networking means for connecting said processing means, I2C mediated means, state management and alert means.

On the other hand, the method of the present invention, the routing system management method, the monitoring step of monitoring the down state of the I2C bus at predetermined time intervals; Disconnecting all the lower I2C channels from the upper I2C channel by applying a reset to the lower I2C switch when a problem occurs in the operation of the I2C bus in the monitoring step; Confirming whether the I2C bus is down while activating the lower I2C channels one by one after executing the disconnection step; A checking step of registering the downlink channel in the failed channel list as a result of the checking and examining the next channel; And after the checking step, the lower I2C channel registered in the fault channel is separated from the upper I2C channel and the remaining channels are connected and separated.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an embodiment of a routing system management apparatus according to the present invention.

As shown in FIG. 1, the apparatus for managing a routing system according to the present invention includes a main processor 111, an upper I2C 120, a lower I2C 150, and an upper and lower I2C 120, which are largely active / standby. I2C-mediated block 140 to manage connection 150, the state management and alarm block 180 of the slave board 170, the slot ID 161 of the slave board, and I2C bus buffer 112, which is an I2C hot swap buffer. ) And a backplane 130 that provides a connection path for the I2C channel.

In more detail, the main processor 111 that collects alarm data and performs management functions of each board mounted in the system slot has a dual structure of active and standby, and I2C of each main processor 111. The main processor block 110 is configured such that the channel is connected to the system backplane 130 through the I2C bus buffer 112 so that the main processor 111 board does not affect the I2C channel even when the main processor 111 board is mounted while the power is applied. The other boards of the system other than the upper I2C channel group in which the I2C connection structure is connected to the main processor block 110 and the main processor block 110 are connected to their I2C channels that all boards of the routing system have. I2C network (120, 150) consisting of the lower I2C channel group connected to the board), and the I2C mediated connection between upper I2C and lower I2C. When the active processor is switched from the neutralized main processor block 110 to the standby processor, the standby processor separates the active processor's I2C channel from the lower I2C channel group and separates its I2C channel from the lower I2C channel group. I2C media block 140, I2C including a function to connect to the upper I2C channel selectively to a plurality of lower I2C channel group, and the switching function for the abnormal channel when the lower I2C channel occurs It has an I2C connection configuration of each block 140 and a point-to-point I2C connection, and includes an I2C bus buffer 181 that absorbs an electric shock when mounting and dismounting an I2C channel of a serial data transmission method using a parallel data transmission method. A data converter 182 for converting and receiving alarm collection and management commands of the slave board according to the converted parallel data. And a state management and alarm block 180 of the slave board including the programmable logic device 183, which is active, and the main processor 111 in an active state can know about the real hernia information of the slave board through the I2C connection network. It can classify certain lower I2C channel according to the failure of slave board and automatically switch in I2C network.When slave main processor receives system control from active main processor, upper I2C channel and lower I2C channel It is characterized in that the operation related to the I2C network of the router that can reset the connection between groups.

In addition, the slave board 170 has a dual power structure for receiving the main power 162 and the power for state management and alarm block (hereinafter, separate power) 163 separately from the backplane 160, and the slave board 170 Is mounted to the backplane 160 and power is applied to the board via the backplane 160, the separate power source 163 is applied directly to the board's state management and alarm block 180 without power control commands, and the main power source ( 162 is configured to be applied to the slave board 170 only after receiving the power ON command from the main processor 111 through the I2C channel after the I2C channel of the slave board 170 is connected to the upper I2C channel.

On the other hand, each configuration of the routing system management apparatus according to the present invention will be described in more detail as follows.

The I2C media block 140 receives a reset signal from the active / slave main processor 111 and a master switch 141 which is a master switching device, and an AND device 142 for resetting the devices of the I2C media block 140. ) And an I2C bus 10 between the I2C switch 143 that switches the lower I2C 150 channel, and the master switch 141 that is a master switching device and the I2C switch 143 that switches the lower I2C 150 channel. It is composed of

When power is applied to the system, the main processor 111 of the active main processor block 110 sends a reset signal 121 to the I2C mediated block 140 to initialize the devices on the I2C mediated block 140, and The connection configuration command is sent to the I2C media block 140 to connect the I2C channel 120 and the lower I2C channel 150 group.

The state management and alarm block 180 of the slave board 170 includes an I2C bus buffer 181, which is an I2C hot swap buffer, a data converter 182 for converting I2C data of a serial transmission method into parallel data, and programmable logic. The device 183, a separate power source 163 separated from the main power source 162 of the slave board 170, and a slot ID required for I2C address allocation of the slave board 170 and slot recognition of the slave board 170. Device 161.

When the slave board 170 is mounted on the backplane 160, a separate power supply 163 is applied to the state management and alarm block 180 of the slave board 170, wherein the I2C bus buffer 181, which is an I2C hot swap buffer, At the moment of applying power, the I2C channel of the slave board 170 is prevented from affecting other I2C channels.

The main power source 162 of the slave board 170 is turned on / off by the programmable logic device 183 on the state management and alert block 180 of the slave board 170, which is an I2C channel. Control by the power-up command of the main processor 111 through (120, 144, 150).

When the main processor 111 in the active state wants to read the status information of the slave board 170, the related signal is transmitted to the I2C switch 143 on the I2C intermediate block 140 and the slave board 170 via the backplane 160. It comes down to the I2C bus buffer 181, which is an I2C hot swap buffer, and transfers the data from the data converter 182 to the I2C serial signal and the parallel input / output signal to the programmable logic device 183, which is changed by the data converter 182. The parallel input / output signal can access the state information of the slave board 170 by reading or writing an internal register of the programmable logic device 183.

The I2C switch 143, which is a lower I2C channel switching device of the I2C intermediate block 140, functions to prevent the down of the entire I2C channel due to a failure of a specific I2C channel. The I2C channel 150 may be transferred, and a specific lower I2C channel may be connected to or disconnected from the upper I2C channels 120 and 144 through the I2C command code.

The master switch 141, which is a master switching device of the I2C intermediate block 140, transfers the main processor 111 in the active state, and the master switch 141 when the main processor in the slave state wants to obtain control of the I2C channel. Send an I2C connection change command to connect its I2C channel 120 to the lower I2C channel group (144, 150).

FIG. 2 is a detailed block diagram of an embodiment of the I2C intermediate block of FIG. 1.

As shown in FIG. 2, the I2C intermediate block 226 of the routing system management apparatus according to the present invention is mounted on the backplane 223 of the routing system, and the upper I2C of the main processor board 224 through the backplane 223. The channel 229 and the reset 227 and 228 signals are received, and the I2C channel of the other boards (standby main processor) except the main processor 224 board is connected to the upper I2C channel.

The master switch 232 allows the active processor 224 to connect the lower I2C channel group 235 and its I2C channel 229 in the dual main processor 224, 225.

The slave switch 234 connects the lower I2C channel 235 to the upper I2C channels 229 and 233. When an I2C channel failure of a specific slave board occurs, the slave switch 234 can switch over the entire I2C channel network. Improve reliability in management and operation.

The reset signal 236 of the I2C intermediate block outputs the reset signals 227 and 228 from the main processor 224 in the active state and the main processor 225 in the slave state through the AND device 230. As a result, the master switch 232 and the slave switch 234 are initialized.

When the slave switch 234 receives the reset signals 227 and 228 from the main processor 224 and 225, the slave switch 234 switches all the lower I2C channels 235 and receives the channel connection command from the main processor 224 and 225 and receives the upper I2C. The lower I2C channel 235 is connected to the channels 229 and 233.

I2C media block 226 receives power from backplane 223 via power connector 231.

3 is a diagram illustrating an embodiment of a slot ID of the routing system management apparatus according to the present invention, and indicates that the slot number is recognized when the board is mounted in a specific slot.

When the slot 338 of the backplane 337 has a plurality of slot ID pins 339 and a group of slot ID pins 339 are connected to the ground 341 and the VCC 340 differently for each slot, the board is mounted in the slot. Have a different ID for each slot.

The slot ID is also used to configure the I2C address of the I2C device of the slave board.

Figure 4 is a detailed configuration diagram showing a slave board of the routing system management apparatus according to the present invention, showing a state management and alarm block of the slave board.

The slave board 447 receives a slot ID 443, an I2C signal 444, a main power source 446, and a separate power source 445 for state management and alert blocks on the backplane 442.

In the slave board 447, the slot ID 443 is connected to a data converter 450 and a programmable logic device 451 that convert I 2 C into a parallel signal through a pull-up resistor 452.

The data converter 450 uses the slot ID value 453 as its I2C address to allow the active main processor to access the data converter 450 of a specific slot through the I2C channel.

The programmable logic device 451 receives the slot ID value 454 and stores it in an internal register, and a local processor on the slave board 447 reads the above register to set a port of the board or communicate with an upper main processor. Used for setting.

The I2C bus buffer 449, an I2C hot swap buffer, absorbs the electrical shock that can occur when the slave board 447 is dismounted from the backplane 442 so that it does not affect other I2C channels in the system.

The data converter 450 receives the I2C command code, converts it into a parallel input / output signal 455, and transfers the same to the programmable logic device 451.

The programmable logic device 451 collects various status information and alarms of the slave board 447 to more input / output pins, or performs commands such as the main power on / off of the board, which are internally related registers. The above register is read or written by the active main processor via the upper I2C channel through the data converter 450.

5 is a flowchart illustrating a method for managing a routing system according to an embodiment of the present invention, in which an active main processor monitors an I2C state of a system and finds a fault channel in the event of a fault and excludes it from the overall I2C connection configuration. Indicates.

The routing system management method shown in FIG. 5 operates in an active main processor, and monitors the down state of the I2C bus at a predetermined time interval (501), and if a problem occurs in the operation of the I2C bus, resets the lower I2C switch. And disconnects all lower I2C channels from the upper I2C channel (502) and activates the lower I2C channels one by one (503) to see if the I2C bus is down (504).

As a result of the check, if the channel causing the problem is registered in the fault channel list (505), the next channel is checked in the same manner.

After checking all the channels (506 and 507), the lower I2C channel registered in the faulty channel is separated from the upper I2C channel and the remaining channels are connected (508).

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

As described above, the present invention improves reliability and availability in collecting status management and alarm related information of a system by using an I2C connection configuration having a failure response capability inside the system, and expands to an I2C connection configuration considering system expansion. According to the present invention, there is an excellent effect to increase the ease of design and implementation.

Claims (12)

In the routing system management apparatus, Processing means for performing a management function for each board mounted in the routing system slot, wherein the main processor has a dual structure of an active processor and a standby processor; When the processing means transfers the active processor to the standby processor, the standby processor separates the I2C (Inter-IC) channel of the active processor from the lower I2C channel and its own I2C. I2C mediating means for connecting a channel to a lower I2C channel group, selectively connecting an upper I2C channel to a plurality of lower I2C channel groups, and performing a switching function for an abnormal channel when an abnormality occurs in the lower I2C channel; A state management and alarm means having an I2C connection configuration in a point-to-point manner with the I2C medium means and for performing alarm collection and management commands of a slave board; And I2C networking means for connecting said processing means, I2C mediated means, state management and alert means Routing system management device comprising a. The method of claim 1, The processing means, The I2C channel of the active processor and the standby processor is connected to the system backplane through an I2C hot-swap buffer, and is configured to not affect other I2C channels even when the main processor board is mounted with power applied. The active processor sends a reset signal to the I2C mediating means to initialize the devices on the I2C mediating means and issues a connect configuration command to the I2C mediating means to connect the I2C channel and the lower I2C channel group of the processing means. Routing system management apparatus, characterized in that for transmitting. The method of claim 1, The I2C medium means, Master switching means for connecting said processor I2C channel in said active state to an I2C channel of said I2C mediated means; Computing means for resetting the devices of the I2C mediating means upon receiving a reset signal from the processing means; I2C switching means for switching the lower I2C channel; And Connecting means for connecting the I2C switching means and the master switching means to an I2C bus; Routing system management device comprising a. The method of claim 3, wherein The master switching means, When the processor in the active state is transferred and the standby processor is to obtain control of the I2C channel, an I2C connection change command is issued to the master switching means to connect the I2C channel of the processing means to the lower I2C channel group. Routing system management apparatus, characterized in that. The method of claim 3, wherein The I2C switching means, It prevents down the entire I2C channel due to the failure of a specific I2C channel, transfers all the lower I2C channels by receiving a reset signal from the processing means, and connects or disconnects the specific lower I2C channel with the upper I2C channel through I2C command code. Routing system management apparatus, characterized in that. The method of claim 1, The state management and alarm means, I2C hot-swap buffer to prevent the slave board's I2C channel from affecting other I2C channels at the moment of power-up, data converter to convert I2C data of serial transmission to parallel data, and to converted parallel data A programmable logic device that executes alarm collection and management commands of the slave board, a separate power supply separate from the main power supply of the slave board, a slot ID for I2C address allocation of the slave board, and slot recognition of the slave board Routing system management apparatus comprising a device. The method of claim 6, The main power source, Routing on / off by said programmable logic device on said state management and alerting means and controlled by a power on command of said processing means via said I2C channel. The method of claim 6, The programmable logic device, A signal for converting information to read the state information of the slave board from the processor in the active state through the I2C switching means of the I2C mediating means and the I2C hot swap buffer, and from the I2C serial signal to a parallel input / output signal in the data converter; Routing system management device, characterized in that for receiving the state register command and alarm collection of the slave board by reading or writing the internal register. The method of claim 6, The slave board, In the backplane has a dual power structure that receives the main power and the separate power for the state management and alarm means separately, mounted on the backplane and the power is applied to the board through the backplane, the separate power is the power It is directly applied to the state management and alarm block of the slave board without a control command, and the main power supplies a power on command from the processing means through the I2C channel after the I2C channel of the slave board is connected to the upper I2C channel. Routing system management device, characterized in that the slave board to be received. The method of claim 9, The slave board, When mounted on the backplane, it is connected to the slot ID pins of the backplane to have a unique number according to the slot, and the unique number according to the slot can be used by the I2C device on the slave board to configure its own I2C address. Features routing system management device. The method of claim 1, The I2C networking means, And an upper I2C channel group of the processing means and a lower I2C channel group connected to the slave board, and connecting the upper I2C and the lower I2C. In the routing system management method, A monitoring step of monitoring a down state of the I2C bus at predetermined time intervals; Disconnecting all the lower I2C channels from the upper I2C channel by applying a reset to the lower I2C switch when a problem occurs in the operation of the I2C bus in the monitoring step; Confirming whether the I2C bus is down while activating the lower I2C channels one by one after executing the disconnection step; A checking step of registering the downlink channel in the failed channel list as a result of the checking and examining the next channel; And After the checking step, the separation and connection step of separating the lower I2C channel registered in the failure channel from the upper I2C channel and connecting the remaining channels Routing system management method comprising a.

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