CN101626311A - Bypass control module and network management device and method - Google Patents

Abstract

The invention discloses a bypass control module, a network management device and a network management method. The logic circuit generates a logic output signal according to the state of the system power supply received by the network system and the state of at least one first control signal. The condition circuit is coupled to the logic circuit and is used for outputting a condition signal and determining the state of the condition signal according to the state of the logic output signal. The network system selects one of the data transmission paths to transmit data according to the state of the logic circuit.

Description

Bypass control module and network management device and method

technical field

The present invention relates to a network management device, and in particular to a bypass control module of the network management device.

Background technique

With the advancement of science and technology, the Internet has been widely used in today's life, and has greatly improved the convenience of life, such as e-mail, data transmission, online shopping, resource sharing, online learning and online search, all of which can be clearly seen The application of discovery network is very extensive.

Therefore, whether it is a wired or wireless Internet system, the stability of its network connection is very important. Therefore, in the traditional network system, if an abnormal state that affects the network connection occurs, such as unstable power input or hardware failure, the system will activate the LAN bypass function to maintain the smooth flow of the network. However, because the existing local area network bypass function is to control the switch (relay) through firmware or an operating system (operation system, OS), in order to achieve the smooth flow of the network. Therefore, when the system is shutting down, due to the time difference, the system may not have time to change the control signal of the switcher power supply, resulting in malfunction.

Contents of the invention

Therefore, the present invention provides a bypass control module that can avoid malfunction of the system when controlling the switch due to power loss.

In addition, the present invention provides a network management device and management method to avoid malfunction of the switch.

The invention provides a bypass control module, which is suitable for switching multiple data transmission paths in a network system. The bypass control module includes a logic circuit and a conditional circuit. The logic circuit generates a logic output signal according to the state of the system power received by the network system and the state of at least one first control signal. The conditional circuit is coupled to the logic circuit, and the conditional circuit is used to output the conditional signal, and determines the state of the conditional signal according to the state of the logic output signal. The above-mentioned network system selects one of the data transmission paths for data transmission according to the state of the logic circuit.

In addition, in the bypass control module of the present invention, the logic circuit also determines the state of the logic output signal according to the state of the second control signal.

In the bypass control module according to an embodiment of the present invention, the logic circuit includes an OR gate and a D-type flip-flop. Wherein the OR gate respectively receives the first control signal and the second control signal, and outputs an OR gate signal. The D-type flip-flop has a flip-flop input terminal, a clock terminal and a flip-flop output terminal, wherein the flip-flop input terminal is coupled to an OR gate and used to receive an OR gate signal. The clock terminal receives the system power. When the state of the system power is switched from high potential to low potential, the OR gate signal is sent from the output terminal of the flip-flop to the conditional circuit to be used as a logic output signal.

In the bypass control module according to an embodiment of the present invention, the condition circuit includes a transistor. Its transistor emitter terminal is grounded, the base terminal receives the logic output signal, and its collector terminal outputs the conditional signal.

From another point of view, the present invention also provides a network management device. It is suitable for a network system and is used to connect multiple client hosts to a server. The above-mentioned network management device includes a logic circuit, a conditional circuit and multiple switching modules. The logic circuit generates a logic output signal according to the state of the system power supply and the state of at least one first control signal. The conditional circuit is used to output the conditional signal, and is coupled to the logic circuit, and determines the state of the conditional signal according to the state of the logic output signal. In addition, multiple switching modules are respectively coupled to the client host and the server, and have a first transmission terminal and multiple second transmission terminals. The switching module is coupled to the next switching module through the second transmission terminal, and these switching modules are further coupled to the condition circuit, and according to the state of the condition signal, it is determined to connect the first transmission terminal of each switching module One of the second transmission ends coupled to each of the switching modules.

In addition, in the network management device of the present invention, the logic circuit also determines the state of the logic output signal according to the state of the second control signal.

In the network management device according to an embodiment of the present invention, the logic circuit includes an OR gate and a D-type flip-flop. Wherein the OR gate respectively receives the first control signal and the second control signal, and outputs an OR gate signal. The D-type flip-flop has a flip-flop input terminal, a clock terminal and a flip-flop output terminal, wherein the flip-flop input terminal is coupled to an OR gate and used to receive an OR gate signal. The clock terminal receives the system power. When the state of the system power is switched from high potential to low potential, the OR gate signal is sent from the output terminal of the flip-flop to the conditional circuit to be used as a logic output signal.

The network management device in an embodiment of the present invention further includes a main board controller and an input/output control unit. The motherboard controller is used to determine whether to output the first control signal according to the user's operation. The I/O control unit has a timer, which is used to start counting when the network system is abnormal, and when the network system is abnormal and reaches a preset time, the I/O control unit outputs a second control signal.

In addition, in the network management device of the present invention, the first transmission end of each switching module is respectively coupled to one of the client computers through the RJ45 interface.

In an embodiment of the present invention, the network management device further includes a plurality of converters and transceiver units. The converter is respectively coupled to the corresponding switching module through one of the plurality of second transmission terminals of each switching module. The transceiver unit is coupled to the converter through an interface and coupled to the server.

In addition, in the network management device of the present invention, the interface is a media-related interface.

From another point of view, the present invention also provides a management method for a network system. The network system operates according to system power, and the management method includes the steps of providing a plurality of second transmission paths for connecting clients to each other, and providing physical logic circuits and enabling the physical logic when the network system is shutting down. The circuit selects the first transmission path or the second transmission path to transmit data.

In addition, in the management method of the network system of the present invention, the step of judging whether the network system is shut down includes detecting whether the state of the system power is switched from a high potential to a low potential. And when the network system is shut down, the physical logic circuit selects the first transmission path or the second transmission path to transmit data according to the user's operation.

In the management method of the network system according to an embodiment of the present invention, the steps further include judging whether an abnormality occurs in the network system, and starting timing when the abnormality occurs in the network system, and when the abnormality occurs in the network system for a preset time, then use The physical logic circuit selects the first transmission path to transmit data.

Since the present invention provides a physical logic circuit to manage the state of the switching module, the present invention can avoid the occurrence of malfunctions.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are described below in detail with accompanying drawings.

Description of drawings

Figure 1 is a diagram of the network system.

FIG. 2 is a functional block diagram of a network management device according to an embodiment of the present invention.

FIG. 3 is a circuit diagram of a bypass control module according to this embodiment

FIG. 4 is a flow chart showing the steps of the management method of the network system according to the present invention.

FIG. 5 is a flow chart showing the steps of the management method of the network system according to the present invention.

Detailed ways

Figure 1 is a diagram of the network system. Referring to FIG. 1 , the network system 100 includes a network management device 110 , a server 220 and client hosts 130 , 140 , 150 , 160 . The server 120 and the client hosts 130 , 140 , 150 , 160 are respectively coupled to the network management device 110 . In this way, the client hosts 130 , 140 , 150 , and 160 can access data to the server 120 through the network management device 110 . In this embodiment, the network management device 110 can have multiple RJ45 interfaces, and each client host 130, 140, 150, 160 can be connected to the network management device 110 through these RJ45 interfaces.

The network management device 110 can provide multiple data transmission paths for each client host 130, 140, 150, 160. In some embodiments, the default data transmission path is connected to the server 120 . In some other embodiments, the network management device 110 can also activate a bypass function (LAN bypass function) to provide a path for client hosts to connect to each other, for example, the client hosts 130 and 140 are connected or the client hosts 140 and 150 are connected. link.

FIG. 2 is a functional block diagram of a network management device according to an embodiment of the present invention. Referring to FIG. 2 , the network management device 200 provided by this embodiment includes a bypass control module 210 , switching modules 220 and 230 , converters 240 , 241 and a transceiver unit 250 . In this embodiment, each switching module 220 and 230 may have a first terminal 221 and 231 and a plurality of second terminals, such as 222 , 223 , 232 and 233 . Wherein, each switching module can be coupled to the corresponding converter through the corresponding second terminal. For example, the switching module 220 can be coupled to the converter 240 through the second terminal 222 , and the switching module 230 can be coupled to the converter 241 through the second terminal 232 . In addition, the converters 240 and 241 can be coupled to the transceiver unit 250 . In general, the transceiver unit 250 can be coupled to, for example, the server 120 in FIG. 1 . In some embodiments, the transceiver unit 250 may be coupled to the converters 240 and 241 through an interface, and the interface may be a media-related interface. In addition, the transceiver unit 250 is, for example, an integrated circuit of PHY-Marvell-88E1121.

In addition, each switching module 220 and 230 can also be connected to each other through other second terminals. For example, the switching module 220 can be coupled to the second terminal 233 of the switching module 230 through the second terminal 223 . As for the first endpoints 221 and 231 of the switching modules 220 and 230, they can be coupled to, for example, the client hosts 130, 140, 150 and 160 in FIG. 1 through an interface such as an RJ45 interface. In this way, the client hosts connected to the switching modules 220 and 230 have data transmission paths connected to each other.

In particular, the switching modules 220 and 230 can also be coupled to the bypass control module 210 . In this embodiment, the bypass control module 210 can receive a system power supply, and control the switching modules 220 and 230 to respectively connect the first terminals 221 and 231 to the second terminals 222 and 232, or connect to the second terminals 223 and 233.

FIG. 3 is a circuit diagram of a bypass control module according to this embodiment. Referring to FIG. 3 , the bypass control module 300 includes a logic circuit 310 and a condition circuit 320 , and the output of the logic circuit 310 is coupled to the condition circuit 320 . The logic circuit 310 can receive at least a first control signal CS1 and a system power signal ES. In this embodiment, the logic circuit 310 also receives a second control signal CS2. In this way, the logic circuit 310 can determine whether to output a logic output signal BS to the condition circuit 320 according to the state of the first control signal CS1 and the second control signal CS2 and the system power signal ES.

The logic circuit 310 includes an OR gate 311 and a D-type flip-flop 312 . Wherein, the OR gate 311 can receive the control signals CS1 and CS2, and output an OR gate signal to the D-type flip-flop 312 . The D-type flip-flop 312 has a flip-flop input terminal D, a clock terminal clk, and a flip-flop output terminal Q. Wherein, the flip-flop input terminal D of the D-type flip-flop 312 can be coupled to the output terminal of the OR gate 311 to receive the OR gate signal OS. In addition, the clock terminal clk of the D-type flip-flop 312 can receive the system power signal ES, and the output terminal Q of the flip-flop can be coupled to the condition circuit 320 .

The conditional circuit 320 can be realized by using a transistor, wherein the base terminal of the transistor can be coupled to the flip-flop output terminal Q of the logic circuit 310, the emitter terminal can be grounded, and the collector terminal can be coupled to, for example, the switching modules 220 and 230 in FIG. 2 . In this way, the conditional circuit 320 can determine whether to output the conditional signal AS from the collector terminal to the switching modules 220 and 230 according to the logic output signal BS.

Please refer to FIG. 2 and FIG. 3 together. In this embodiment, the first control signal CS1 may be output by the motherboard controller 330 , and the second control signal CS2 may be output by an input-output control unit 340 . In addition, the D-type flip-flop 312 may have negative-edge triggered characteristics. Therefore, when the system is turned off, the system power signal ES will switch from a high potential to a low potential, thereby generating a negative edge to the clock terminal clk of the D-type flip-flop 312 . At this time, the D-type flip-flop 312 outputs the OR signal OS as a logic output signal BS to the condition circuit 320 . Several embodiments are provided below to illustrate the operation of the D-type flip-flop 312 .

first situation

Suppose, when the user wants to connect the first terminals 221 and 231 of the switching modules 220 and 230 to the second terminals 223 and 233 , the motherboard controller 330 can output the first control signal CS1 of high potential to the OR gate 311 . At this time, the OR signal OS output by the OR gate 311 is in a high potential state due to the state of the first control signal CS1. However, when the system is in normal operation, the system power signal ES will maintain a high potential, so the OR signal OS will be latched at the flip-flop input terminal D of the D-type flip-flop 312 .

At this time, if the system is turned off, the system power signal ES will switch from high potential to low potential, and a negative edge signal will be sent to the clock terminal clk. At this time, the D-type flip-flop 312 can send the high-potential OR gate signal OS originally locked at the input terminal D of the flip-flop as a logic output signal BS to the base terminal of the transistor of the conditional circuit 320, so that the conditional circuit 320 is turned on, causing the state of the condition signal AS to be pulled down to the ground potential. When the switching modules 220 and 230 receive the conditional signal AS at the ground potential, they can connect the first terminals 221 and 231 to the second terminals 223 and 233 respectively, thereby activating the bypass function.

second situation

In some embodiments, the I/O control unit 340 has a counter 341 . When the system fails to operate normally due to an abnormality, the counter 341 can start timing and generate a timing value. When the counting value is equal to a preset time, the I/O control unit 340 may output a low-level second control signal CS2 to the OR gate 311 . Likewise, the OR gate signal OS is in a low potential state due to the state of the second control signal CS1 , and is latched at the flip-flop input terminal D of the D-type flip-flop 312 .

At this time, if the system power supply signal ES switches from a high potential to a low potential because the system is shut down, the D-type flip-flop 312 can switch the low-potential OR gate that was originally latched at the input terminal D of the flip-flop to The signal OS is sent to the base terminal of the transistor of the condition circuit 320 as a logic output signal BS, so that the condition circuit 320 is turned off, and the condition signal AS is disabled. When the condition signal AS is disabled, the switching modules 220 and 230 can connect the first terminals 221 and 231 to the second terminals 222 and 232 respectively.

After sorting out the above descriptions, the present invention also provides a flow chart of the steps of the network system management method, as shown in FIG. 4 . Please refer to FIG. 4, in a network system (such as the network system 100 in FIG. 1), the management method provided by this embodiment can provide multiple first transmission paths as described in step S401, so as to connect the client to the server . The so-called first transmission path in this embodiment is, for example, the data transmission path formed by the first end point 221 to the second end point 222 of the switching module 220 in FIG. 2 .

In addition, the management method of this embodiment can provide multiple second transmission paths as described in step S402, for example, the first endpoint 221 and 231 to the second endpoint 223 and 233 of the switching modules 220 and 230 in FIG. data transfer path. And these second transmission paths can be used to connect clients to each other. In particular, the management method of this implementation can provide a physical logic circuit as described in step S403, such as the bypass control module 300 in FIG. transfer data.

In some embodiments, step S303 may determine to use the first transmission path or the second transmission path as the data transmission path according to the user's operation. In some other embodiments, the management method provided by the present invention can also use the state of the network system to determine the data transmission path.

FIG. 5 is a flow chart showing the steps of selecting a data transmission path according to the state of the network system according to the present invention. Please refer to FIG. 5 , in this embodiment, the management method of the present invention can determine whether an abnormality occurs in the network system as described in step 501 , such as unstable power input or hardware failure. If no abnormality is found (that is, "No" indicated in step S501 ), then step 502 can be executed, which is to make the system maintain the previously preset transmission path for data transmission.

On the other hand, if it is found that there is an abnormality in the system during step S501 (that is, "yes" marked in step S501), then step S503 can be executed, which is to start timing and generate a timing value. At this time, as described in step XXX, it may be judged whether the timing value reaches a preset time. If the network system is abnormal for a preset time, the physical logic circuit is made to select the first transmission path to transmit data.

Although in the above step 504, when the network system is abnormal for a predetermined time, the physical logic circuit may select the first transmission path. However, those skilled in the art can also make the physical logic circuit select the second transmission path as the data transmission path, which is not limited by the present invention.

In summary, the present invention provides a physical logic circuit to control the state of the switching module. Therefore, even when the system is shut down or the power supply disappears suddenly, the switching module will not cause malfunction.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection should be defined by the claims.

Claims (15)

1. A bypass control module, suitable for switching a plurality of data transmission paths in a network system, and the bypass control module includes: a logic circuit, which generates a logic output signal according to the state of a system power supply and the state of at least one first control signal received by the network system; and A conditional circuit is used to output a conditional signal, and the conditional circuit is coupled to the logic circuit to determine the state of the logic circuit according to the state of the logic output signal, Wherein the network system selects one of the data transmission paths for data transmission according to the state of the logic circuit. 2. The bypass control module according to claim 1, wherein the logic circuit also determines the state of the logic output signal according to the state of a second control signal. 3. The bypass control module according to claim 2, wherein the logic circuit comprises: an OR gate, respectively receiving the first control signal and the second control signal, and outputting an OR gate signal; and A D-type flip-flop has a flip-flop input terminal, a clock terminal and a flip-flop output terminal, wherein the flip-flop input terminal is coupled to the OR gate to receive the OR gate signal, and the timing The pulse terminal receives the system power. When the state of the system power is switched from high potential to low potential, the OR signal is sent from the flip-flop output terminal to the conditional circuit as the logic output signal. 4. The bypass control module as claimed in claim 1, wherein the condition circuit comprises a transistor whose emitter terminal is grounded, whose base terminal receives the logic output signal, and whose collector terminal outputs the condition signal. 5. A network management device, suitable for a network system, for connecting multiple client hosts to a server, and the network management device includes: a logic circuit, generating a logic output signal according to the state of a system power supply and the state of at least one first control signal; a conditional circuit for outputting a conditional signal, and the conditional circuit is coupled to the logic circuit to determine the state of the logic circuit according to the state of the logic output signal; and A plurality of switching modules are respectively coupled to the client hosts and the server, and have a first transmission terminal and a plurality of second transmission terminals, and each of the switching modules is coupled through the second transmission terminals to the next switching module, and the switching modules are also coupled to the condition circuit, so as to determine to couple the first transmission end of each switching module to the switching modules according to the state of the condition signal One of the second transmission ends. 6. The network management device according to claim 5, wherein the logic circuit also determines the state of the logic output signal according to the state of a second control signal. 7. The network management device according to claim 6, wherein the logic circuit comprises: an OR gate, respectively receiving the first control signal and the second control signal, and outputting an OR gate signal; and A D-type flip-flop has a flip-flop input terminal, a clock terminal and a flip-flop output terminal, wherein the flip-flop input terminal is coupled to the OR gate to receive the OR gate signal, and the timing The pulse terminal receives the system power. When the state of the system power is switched from high potential to low potential, the OR signal is sent from the flip-flop output terminal to the conditional circuit as the logic output signal. 8. The network management device according to claim 6, further comprising: a main board controller, used to determine whether to output the first control signal according to a user's operation; and An I/O control unit has a timer, which is used to start timing when the network system is abnormal, and makes the I/O control unit output the second control signal when the network system is abnormal for a preset time. 9. The network management device according to claim 5, wherein the first transmission end of each of the switching modules is respectively coupled to one of the client computers through an RJ45 interface. 10. The network management device according to claim 5, further comprising: A plurality of converters are respectively coupled to the corresponding switching modules through one of the second transmission terminals of each of the switching modules; and A transceiver unit is coupled to the converters through an interface and coupled to the server. 11. The network management device according to claim 10, wherein the interface is a media-related interface. 12. A management method of a network system, and the network system operates according to a system power supply, and the management method comprises the following steps: providing multiple first transmission paths for connecting multiple clients to a server; providing a plurality of second transmission paths for connecting the clients to each other; providing a physical logic circuit; and When the network system is shutting down, the physical logic circuit is made to select the first transmission path or the second transmission path to transmit data. 13. The management method according to claim 12, wherein the step of determining whether the network system is shut down comprises detecting whether the state of the system power is switched from a high potential to a low potential. 14. The management method according to claim 12, wherein when the network system is shut down, the physical logic circuit also selects the first transmission path or the second transmission path to transmit according to a user operation data. 15. The management method according to claim 12, further comprising the following steps: Determine whether the network system is abnormal; When an abnormality occurs in the network system, start timing; and When the network system is abnormal for a preset time, the physical logic circuit is made to select the first transmission path to transmit data.

Images