KR101216682B1 - Smart access redundancy network system in network - Google Patents

Abstract

PURPOSE: An intelligent access duplexed system on a network and a method thereof are provided to minimize automatic failure recovery time through network transmission apparatus which performs an automatic duplex switching function of a network path in case a failure in a specific network link occurs. CONSTITUTION: An edge switch includes a pair of a master switch(121) and a backup switch(122). Network transmission apparatus(200) matches the pair of a master switch and a backup switch with one client terminal. When a failure in a first network link connected to the master switch occurs, the network transmission apparatus transmits data of the client terminal to a second network link connected to the backup switch. The network transmission apparatus performs a duplex operation of the client terminal. [Reference numerals] (110) Client terminal; (121) Master switch; (122) Backup switch; (400) Monitoring server; (500) Call center; (AA) Remote access control; (BB) Console control; (N2) Control network

Description

SMART ACCESS REDUNDANCY NETWORK SYSTEM IN NETWORK}

The present invention relates to an intelligent access redundancy system and method thereof in a network. More particularly, the present invention relates to a network communication without interruption of data flow by performing a redundant automatic switching function for a network path and an automatic bypass function when powering down itself. An intelligent access redundancy system in a network capable of delivering traffic without affecting the present invention and a method thereof are provided.

In general, IP-based high-speed Internet access network is a DSLAM (Digital Subscriber Line Access Multiplier) or FES (Fast Ethernet Switch), which accepts subscriber terminals using xDSL (Digital Subscriber Line) or Ethernet (Ethernet) access technology, at home and abroad. An aggregation switch for collecting a plurality of FES or DSLAM, a metro switch for collecting a plurality of non-national aggregation switches within a national office, and a network connection system for receiving a plurality of metro switches and connecting them to a backbone network.

In this case, the FES or DSLAM accommodating the subscriber station processes data through an exchange function of a link layer, which is a layer 2 layer, except for the aggregation switch, the metro switch, and the network access system of the network layer Process data through routing.

Korean Patent Laid-Open Publication No. 2002-0017663 relates to a redundant system on a network and a fault-tolerant recovery method using the same. A plurality of processors for operating a system between an internal network and an external network and a processor for detecting normal operation of the processor A main system including an inspection unit; The monitor unit checking whether the processor of the main system is operating normally through the processor inspection unit between the internal network and the external network, and if the main system malfunctions as a result of the check of the monitor unit, the main system is changed to the IP address of the main system It includes a subsystem consisting of a plurality of processors that perform on behalf of the system's processor functions.

Korean Patent No. 10-0622620 relates to a system and a method for detecting a failure situation occurring in an IP communication system duplexed in an operation-standby mode. Receiving a heartbeat message from a counterpart system using a TCP / IP protocol, comparing the second redundancy status information with the first redundancy status information of the system in which it is located; A redundancy state management module that detects that a duplication failure situation has occurred in the counterpart system if it does not meet the criteria; A process state management module for periodically monitoring a state of a predetermined process to be managed in the system, and detecting a process failure situation associated with the process to be managed according to the monitoring result and notifying the redundant state management module; And a resource state management module that periodically monitors state information of a predetermined resource to be managed in the system, and detects a resource failure situation associated with the managed resource according to the monitoring result and notifies the redundant state management module. When the redundancy state management module is notified of the process failure state or the resource failure state, it is determined that a redundancy failure situation has occurred in the system, and the redundancy state management module determines that (1) the first redundancy based on the criteria When the status information is 'Standby' and the second redundancy status information is 'Active', (2) When the first redundancy status information is 'Active' and the second redundancy status information is 'Standby', (3 ) The first redundancy state information is 'Active Alone (state where the counterpart system is not normally detected)', Second redundant status information is set to any one of the case of "Unknown (tracking system initialization state).

As described above, in the case of a conventional redundant system, when a main system or a process to be managed fails, a stable system can be constructed by changing the active setting to the other subsystem or a counterpart processor, but load is concentrated on one system (processor). As a result, there is a problem that the efficiency of the system can be reduced because the load is not properly distributed.

In addition, in case of performing fault handling by monitoring the fault in the situation room, if the fault report is received from the client side, the time required for handling the fault is 30 because the process is performed by inputting technology and manpower for handling the fault. It takes about 6 minutes to 6 hours, data can be lost during troubleshooting time, and client's work is interrupted.

Korean Laid-Open Patent No. 2002-0017663 Korean Patent No. 10-0622620

The present invention can minimize the automatic failure recovery time through a network transceiver that performs a redundant automatic switching function for the network path in the event of a failure of a specific network link, it is possible to build a failure-free or non-disruptive solution for computer system resources An intelligent access redundancy system on a network and a method thereof are provided.

In addition, the present invention provides an intelligent access redundancy system and method on a network capable of delivering traffic without delay without affecting a currently connected network link through an automatic bypass function when the network transceiver is powered off.

The present invention provides a system and method for intelligent access redundancy on a network capable of real-time checking and controlling the status of a network transceiver device at a remote location through a monitoring server, and monitoring and rapidly responding to network failures.

Among the embodiments, the intelligent access redundancy system on the network includes a plurality of client terminals, at least one edge switch connected to the client terminals, a backbone switch for load balancing traffic of a server or a network, the backbone switch An intelligent access redundancy system on a network comprising a firewall connected to the firewall, a router / metro switch connected to the firewall, and the Internet, the edge switch comprising a master switch and a backup switch pair, the master switch and backup switch Matching pairs and one client terminal, and in the event of a failure in the first network link (Link) connected to the master switch performs the data transmission of the client terminal to the second network link connected to the second backup switch to the client Performing a redundancy operation of the client-side device may include a network transceiver.

In at least one example embodiment, the network transceiver may perform at least one redundant relay operation for a network path through a link connection / disconnection operation between the master switch and the backup switch according to a failure or a failure recovery situation on a network link. Switching board; And a control board communicating with the at least one switching board and performing a redundant automatic relay operation for a network path while ensuring continuity of a network link so as to execute zero delay network communication.

The switching board may include a first port to which the master switch is connected; A second port to which the backup switch is connected; A common port to which the client terminal is connected; First to third relays connected to the first port, the second port, and the common port, respectively; A relay driver for opening and closing the first to third relays; A differential receiver connected to the master switch and the backup switch and detecting a link information signal transmitted from the master switch and the backup switch and outputting a differential signal; At least one monostable multivibrator for receiving a differential signal from the differential receiver and outputting an output pulse in a metastable state only for a set time interval and then extinguishing and returning to a stable state; And receiving an output pulse of the monostable multivibrator to identify a faulty link between a first network link and a second network link, operating a first relay or a second relay through the relay driver, and communicating with the control board. It may include a controller for setting the network path by performing the.

The network transceiver may further include at least one LED indicator indicating a current network link state and a port connection; Warning sound generating means for generating a warning sound when the network link fails; And an automatic / manual switching button for setting an automatic switching mode and a manual switching mode of the network link, wherein the control board executes the automatic switching mode or the manual switching mode according to the operation of the automatic / manual switching button, According to the status of the network link it is possible to control the ON / OFF (ON / OFF) operation of the LED indicator and the warning sound generating means.

The control board may further include a power monitoring circuit that performs a bypass function so that the edge switch and the client terminal are directly connected when the power supply is interrupted or the power is supplied again.

The control board may include an Ethernet connection terminal, a USB connection terminal, and an SD card (Secure Digital Card) input terminal. The control board continuously receives time information of the GPS satellites and transmits a synchronization signal according to the NTP (Network Time Protocol) standard to the switching board to synchronize the time of each client terminal connected to the switching board through the network. It may further include a GPS receiver.

In another embodiment, the intelligent access redundancy system on the network checks the status of each network transceiver device in real time through mutual communication with the network transceiver device, changes the settings of the network transceiver device, and executes a specific network transceiver device. It may further include a monitoring server for indicating a failure event of the network link by displaying an alarm event occurred in the.

Meanwhile, when the first network link is automatically switched to the second network link when a failure of the first network link occurs, the network transceiving device releases the connection with the second network link and recovers the first network link. You can switch automatically.

Alternatively, when the first network link is automatically switched to the second network link when a failure of the first network link occurs, when the first network link is restored, the network transceiving device may be connected to the second network link until the second network link fails. Can keep the connection.

Among the embodiments, the intelligent access redundancy method in a network may perform duplex operation with a plurality of client terminals, at least one edge switch connected with the client terminals, and a second network link when a first network link fails. In an intelligent access redundancy method in a network performed by a supporting network transceiver, a) the network transceiver combines the edge switch into a master switch and a backup switch pair to connect the master switch to a first port and the backup switch Connecting to a second port and including at least one port set connecting the client terminal to a common port; b) the network transceiver includes a switching board for performing a redundant relay operation of the client terminal side, the switching board, when detecting the failure of the first network link, disconnects the first port, Connecting the second port to allow traffic of the client terminal to be transmitted over the second network link; And c) the network transceiver includes a control board configured to communicate with the switching board to perform a control operation such that zero delay network communication is executed, wherein the control board collects switching data from the switching board, The method may include transmitting the state information created based on the collected switching data to the outside.

In one embodiment, the control board in step c), the step of displaying the network link status and the port connection currently in operation; Generating a beep upon failure of the network link; And when the automatic switching mode and the manual switching mode of the network link are set by an administrator, executing the automatic switching mode or the manual switching mode of the redundant relay operation.

In one embodiment, the switching board in step b), b-1) checking the state of the first port, the second port and the common port; b-2) If the first port is disconnected when the first port is in a relay ON state and the automatic switching mode of the redundant relay operation is performed, confirm whether the second port is connected. And changing a path from the first network link to the second network link with an automatic switching time when the second port is connected, and connecting the control board to transmit switching data; And b-3) if the first port is disconnected when the first port is in a relay OFF state and the automatic switching mode of the redundant relay operation is performed, whether the first port is connected. And when the first port is connected, changing the path from the second network link to the first network link with an automatic switching time, and then connecting with the control board to transmit switching data. have.

In one embodiment, in step c), the control board checks the status of the network transceiver device in real time, changes the configuration of the network transceiver device, displays an alarm event generated in a specific network transceiver device, and causes a failure of the network link. You can communicate with each other over the network with a monitoring server that alerts you to the situation.

Further, in the step b), when the switching board is automatically switched to the second network link when the first network link fails, when the first network link is restored, the switching board disconnects the second network link and the first network link is disconnected. Any one of a first link maintenance function for automatically switching to a first network link, and a second link maintenance function for maintaining a connection with the second network link until the second network link fails when the first network link is restored. Can support

In step c), the control board continuously receives time information of a GPS satellite and transmits a synchronization signal according to NTP (Network Time Protocol) standard to the switching board, and the switching board is connected to each client terminal connected to a common port. The method may further include synchronizing a time of through a network.

The intelligent access redundancy system and method therefor in a network of the present invention perform a redundant automatic switching function for a network path when a network transceiver performs a failure on a specific network link, and set a programmable automatic switching time setting in consideration of a protocol timeout. Support can minimize automatic failover time and provide the ability to build a fault-tolerant or nondisruptive solution to computing system resources.

In addition, the intelligent access redundancy system and method in the network of the present invention maintains the link path through the automatic bypass function when the network transceiver is powered off, and does not affect the currently connected network link, and delivers traffic without delay. It provides the effect that the administrator can easily check the failure by operating the beep when link fails.

The intelligent access redundancy system and method therefor in the network of the present invention can monitor and control the status of the network transmission / reception apparatus at a remote location in real time through a monitoring server, and provide an effect capable of monitoring and quickly responding to a network failure.

The intelligent access redundancy system and method thereof in the network of the present invention can perform a redundant automatic relay operation for a network path immediately by connecting only a power supply and a network cable to a network transceiver without any additional setting, and the network transceiver is a GPS By receiving the time information of the satellite continuously and synchronizing the time of at least one client terminal connected to the switching board through a synchronization signal according to the NTP standard, not only can accurately maintain the time of the client terminal, but also supports 1: N. It is possible to synchronize the time of several client terminals with multiple network transceivers, providing economical effect.

1 is a diagram illustrating an intelligent access redundancy system on a network according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a monitoring main screen of the monitoring server of FIG. 1.
3 is a block diagram illustrating a network transmission and reception apparatus of FIG. 1.
4 is a front view illustrating an appearance of the network transceiver of FIG. 1.
FIG. 5 is a diagram illustrating a state in which an intelligent access redundancy system is implemented in a backbone network according to an embodiment of the present invention.
6 is a diagram illustrating a bypass function of the network transceiver of FIG. 1.
FIG. 7 is a diagram illustrating an implementation of non-stop link redundancy of the network transceiver of FIG. 1.
FIG. 8 is a diagram illustrating a situation of improving failure handling using an intelligent access redundancy system on a network according to an embodiment of the present invention.
9 is a diagram illustrating a link configuration of an intelligent access redundancy system on a network according to another embodiment of the present invention.
FIG. 10 is a flowchart illustrating an operation of a switching board in an intelligent access redundancy method on a network according to an embodiment of the present invention.
FIG. 11 is a flowchart illustrating an operation of a control board in an intelligent access redundancy method on a network according to an embodiment of the present invention.

Description of the present invention is only an embodiment for structural or functional description, the scope of the present invention should not be construed as limited by the embodiments described in the text. That is, the embodiments are to be construed as being variously embodied and having various forms, so that the scope of the present invention should be understood to include equivalents capable of realizing technical ideas. Also, the purpose or effect of the present invention should not be construed as limiting the scope of the present invention, since it does not mean that a specific embodiment should include all or only such effect.

On the other hand, the meaning of the terms described in the present invention will be understood as follows.

The terms "first "," second ", and the like are intended to distinguish one element from another, and the scope of the right should not be limited by these terms. For example, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" to another element, it may be directly connected to the other element, but there may be other elements in between. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions describing the relationship between the components, such as "between" and "immediately between" or "neighboring to" and "directly neighboring to", should be interpreted as well.

It should be understood that the singular " include "or" have "are to be construed as including a stated feature, number, step, operation, component, It is to be understood that the combination is intended to specify that it does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

In each step, the identification code (e.g., a, b, c, etc.) is used for convenience of explanation, the identification code does not describe the order of each step, Unless otherwise stated, it may occur differently from the stated order. That is, each step may occur in the same order as described, may be performed substantially concurrently, or may be performed in reverse order.

The present invention can be embodied as computer-readable code on a computer-readable recording medium, and the computer-readable recording medium includes all kinds of recording devices for storing data that can be read by a computer system . Examples of the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and also implemented in the form of a carrier wave (for example, transmission over the Internet) . In addition, the computer-readable recording medium may be distributed over network-connected computer systems so that computer readable codes can be stored and executed in a distributed manner.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used predefined terms should be interpreted to be consistent with the meanings in the context of the related art and can not be interpreted as having ideal or overly formal meaning unless explicitly defined in the present invention.

1 is a diagram illustrating an intelligent access redundancy system on a network according to an embodiment of the present invention.

Referring to FIG. 1, an intelligent access redundancy system on a network includes a plurality of client terminals 110, at least one edge switch 120, a network transceiver 200, a monitoring server 400, and a call center 500. do.

The plurality of client terminals 110 may be any one or more of PCs, access control devices, disaster prevention and security devices, CCTV devices, and production equipment.

The edge switch 120 has a master switch 121 and a backup switch 122 connected to one client terminal 110, and accommodates a plurality of client terminals 110 to the data network N1. Connect.

The network transceiver 200 accommodates a master switch 121, a backup switch 122 pair, and one client terminal 110 in one switching board 210, and includes at least four switching boards 210. It includes. The network transceiver 200 transmits data of the client terminal 110 to the second network link connected to the second backup switch 122 when a failure occurs in the first network link connected to the SMS master switch 121. To switch automatically.

The network transceiver 200 may be connected to the monitoring server 400 and the call center 500 through a remote management equipment (RME) 300.

The monitoring server 400 is connected to the console port of the RME 300 to notify the network link failure situation through mutual communication with the network transceiver 200, and check the status of each network transceiver 200 in real time and remote Control can be performed.

FIG. 2 is a diagram illustrating a monitoring main screen of the monitoring server of FIG. 1.

Referring to FIG. 2, when the administrator enters or selects a serial number of the network transceiver 200 by logging in, the monitoring server 400 outputs a monitoring main screen and outputs an alarm event and a menu through the monitoring main screen. Changes and equipment information can be checked.

The alarm event displays the event type, the content, and the time of occurrence, and is automatically updated when a new event occurs, and the menu change checks the details of the network transceiver 200, the status of the switching board 210 and the control board 220. At the same time it is possible to change the settings of the switching board 210 and the control board 220.

In addition, the monitoring server 400 displays the name, serial number, IP, device connection status and operation information of the network transceiver 200 currently selected by the administrator. In addition, the monitoring server 400 may perform a recovery time setting, a recovery, and an initialization operation for each line of the switching board 210. The monitoring server 400 can display or change the presence or absence of an SD card mounted on the control board 220 and the keep alive time. The keep alive time can be adjusted between 5 minutes and 60 minutes and is 1 minute. Can be set in units. The monitoring server 400 may search for event data accumulated while each network transceiver 200 is driven, or search and check log data within a predetermined data range.

On the other hand, the call center 500 or the computer room is connected to the control network network (N2) through the RJ-45 terminal of the RME 300 to check the state of the network transceiver 200, and to perform an immediate failover in the event of a failure In order to confirm the transmission / reception apparatus 200, a technology and a manpower may be instructed.

As such, the monitoring server 400 performs a port switching operation by forcibly connecting to a second network link connected to the backup switch 122 remotely when a network failure of the master switch 121 occurs, or by monitoring the current port configuration details. You can check it.

3 is a block diagram illustrating a network transmission and reception apparatus of FIG. 1.

Referring to FIG. 3, the network transceiver 200 includes at least one switching board 210 and a control board 220.

The switching board 210 automatically switches the connection / disconnection of the first network link and the second network link according to a failure or a failover situation on the network link, and includes first to third ports 211a, 211b, and 211c. ), First to third relays 212a, 212b, 212c, a relay driver 213, a differential receiver 214, a monostable multivibrator 215, and a controller 216.

The first port 211a connects the master switch 121, the second port 211b connects the backup switch 122, and the common port 211c connects the client terminal 110.

The first relay 212a opens and closes the first port 211a, the second relay 212b opens and closes the second port 211b, and the third relay 212c opens and closes the common port 211c.

The relay driver 213 sets the opening and closing operations of the first to third relays 212a, 212b, and 212c.

The differential receiver 214 is connected to the master switch 121 and the backup switch 122, detects the link information signal transmitted from the master switch 121 and the backup switch 122 and outputs a differential signal.

The monostable multivibrator 215 receives the differential signal from the differential receiver 214 and outputs the metastable output pulse only during the set time interval, and then extinguishes the metastable output pulse and returns to a stable state. To return. Two monostable multivibrators 215 are formed.

The controller 216 receives the output pulses of the monostable multivibrator 215 and checks the failed link between the first network link and the second network link, and relays the first relay 212a or the first through the relay driver 213. Open and close operation of the two relays 212b. The controller 216 may be connected to the control board 220 to perform communication to set a network path.

The control board 220 is connected to the switching board 210 to perform a redundant automatic relay operation for the network path while ensuring the continuity of the network link to execute zero delay network communication. In this case, when the first network link fails and the data is transmitted to the second network link, the control board 220 supports a programmable automatic switching time setting in consideration of a protocol timeout problem.

For example, if the automatic switching time is set to 10 seconds, the control board 220 immediately reroutes to another network link if the disconnection of the currently configured network link is maintained for 10 seconds.

In addition, the control board 220 is a power supply performing a bypass function so that the edge switch 120 and the client terminal 110 are directly connected when the power supply of the network transceiver 200 is interrupted or the power supply is turned back on. It may further include a monitoring circuit unit (not shown).

The control board 220 is connected to the controller 216 of the switching board 210 to control the redundant relay operation of each switching board 210, and communicates with the monitoring server 400 to respond to remote monitoring and network failure The controller 221 may further include a main controller 221, an Ethernet connection terminal 252, a USB connection terminal 253, and an SD card input terminal 254.

First of all, the control board 220 includes a GPS receiver 225 for receiving time information of the GPS satellites. The GPS receiver 225 continuously receives time information of the GPS satellites and always maintains accurate time information, and transmits a synchronization signal according to the NTP (Network Time Protocol) standard to the controller 216 of the switching board 210. 216 may synchronize the time of the client terminal 110 connected to the common port 211c through the network, and accurately maintain the time of each client terminal 110.

Since the network transceiver 200 may support 1: 1 or 1: N with the client terminal 110, it is economical because time synchronization of several client terminals 110 may be performed with one network transceiver 200.

4 is a front view illustrating an appearance of the network transceiver of FIG. 1.

Referring to FIG. 4, the network transceiver 200 includes at least one LED indicator 230, a warning sound generating unit 240, and an automatic / manual switching button 250.

The LED indicator 230 displays the currently operating network link status and port connection, alarm release, etc., and the warning sound generating means 240 generates a warning sound when the network link fails.

The automatic / manual switching button 250 sets the automatic switching mode and the manual switching mode of the network link by the administrator. At this time, the automatic switching mode detects the link failure according to the set values, monitors the network status, generates a beep when the link is switched in case of a network failure, and presses the ALR CLEAR switch on the front panel by the administrator. You can turn it off. Manual switching mode enables manual operation while the automatic switching mode is OFF.

The control board 220 executes the automatic switching mode or the manual switching mode between the first and second network links according to the operation of the automatic / manual switching button 250, and the LED indicator 230 and The on / off operation of the warning sound generating means 240 is controlled.

FIG. 5 is a diagram illustrating a state in which an intelligent access redundancy system is implemented in a backbone network according to an embodiment of the present invention.

Referring to FIG. 5, an intelligent access redundancy system in a network may include at least one network transceiver 200 and an edge layer of a transport layer disposed between a client terminal 110 and an edge switch 120. Router / metro switch 130 and the Internet. In this case, a backbone switch and a firewall connected to the backbone switch may be disposed between the router / metro switch 130 and the edge switch 120 to load balance traffic of an Internet server or a network.

For example, the Internet may be a financial network, an administrative computer network, a securities information network, a self-network, etc., the client terminal 110 is a securities company terminal terminal, bank branch office terminal, government office Taiwan business terminal call center consultation, large discount mart POS, It can be a central control system.

Since the network transceiver 200 is installed between the edge switch 120 formed of the master switch 121 and the backup switch 122 and the client terminal 110, the network transceiver 200 does not affect the IEEE Repeater Budget Calculation at all. When the failure of 121 occurs, the network link is automatically switched to the backup switch 122 and the link signal transmission to the second port 211b to which the backup switch 122 is connected can maintain the stability of the second port 211b. .

In addition, the network transceiver 200 may support both end-to-end and end-to-end support, and simultaneously supports 10BaseTX and 100BaseTX through the 10/100 / 1000Base-TX option.

6 is a diagram illustrating a bypass function of the network transceiver of FIG. 1.

Referring to FIG. 6, when the master switch 121 is in an active state and the backup switch 122 is in a standby state, the network transceiver 200 may perform all traffic through the first network link connected to the master switch 121. Communication is made without this loss (see FIG. 6A).

When the power supply is cut off, the network transceiver 200 performs a bypass function that connects the link in a state of being directly connected to the master switch 121, without affecting the network link without interruption of data flow. All traffic can be forwarded (see FIG. 6B).

As described above, the network transceiver 200 may bypass the zero relay without connecting to the first network link when the power is generated by itself and the tap power is turned off to connect the link. .

FIG. 7 is a diagram illustrating an implementation of non-stop link redundancy of the network transceiver of FIG. 1.

Referring to FIG. 7, the network transceiver 200 is active when the first network link connected to the master switch 121 is in an active state and the second network link connected to the backup switch 122 is in a standby state. Performing an instant failover function to monitor the redundant first network link and the second network link in the standby state.

For example, when a failure of the first network link occurs, the network transceiver 200 sets the first network link connected to the master switch 121 to a standby state and the second network link connected to the backup switch 122. By being active and delivering traffic without interrupting data flow, an automatic network link recovery and nonstop solution can be implemented.

FIG. 8 is a diagram illustrating a situation of improving failure handling using an intelligent access redundancy system on a network according to an embodiment of the present invention.

Referring to FIG. 8, in case of a network failure, an access system in a general network should receive a failure report so that a dedicated A / S agent can identify a failure situation and secure A / S equipment to replace the failed equipment after the on-site dispatch. Therefore, the communication service is stopped until normal communication is performed during the failure occurrence time (30 minutes to 6 hours) (see (a) of FIG. 8).

The intelligent access redundancy system in the network is that the network transceiver 200 automatically switches the network link by using the redundant edge switch in the event of a network failure, thereby reducing the failure recovery time to within 10 seconds to 1 minute, and the continuity of data communication Can be ensured (see FIG. 8B).

9 is a diagram illustrating a link configuration of an intelligent access redundancy system on a network according to another embodiment of the present invention.

Referring to FIG. 9A, an intelligent access redundancy system in a network configures a redundant link to a primary hub instead of a master switch at a first port 211a and a secondary hub instead of a backup switch at a second port 211b. In addition, a PC, a server, a POS, a facility, and the like may be connected to the common port 211c.

Referring to FIG. 9B, an intelligent access redundancy system in a network connects a primary server / router to a first port 211a and configures a redundant link as a secondary server / router to a second port 211b. The switching hub can be connected to the common port 211c.

FIG. 10 is a flowchart illustrating an operation of a switching board in an intelligent access redundancy method on a network according to an embodiment of the present invention.

Referring to FIG. 10, the switching board 210 continuously checks the states of the first port 211a, the second port 211b, and the common port 211c, and the first port 211a is relayed ON. Check whether the connection of the first port 211a has been released when data transmission is being performed through the first network path (steps S11, S12, and S13).

If the first port 211a is disconnected when the automatic switching mode is set by the administrator, it is determined that a failure occurs in the first network link currently connected to the first port 211a (step S14).

When the second port 211b is connected, the path is switched from the first network link to the second network link with the set automatic switching time (steps S15 and S16).

 If the first port 211a is in a relay state and data transmission is performed through the second network path, it is checked whether the connection of the second port 211b is released. (Step S17) The switching board 210 When the automatic switching mode is set, confirms whether the first port 211a is connected, and switches the path from the second network link to the first network link with the automatic switching time when the first port 211a is connected. (Steps S18, S19, and S16)

 When the switching board 210 is normally connected to the control board 220, the switching board 210 transmits the switching data to the control board 220. (S20 and S21) The switching board 210 is a GPS receiver 225 of the control board 220. ) Receives a synchronization signal according to the NTP (Network Time Protocol) standard related to the time information of the GPS satellite, and transmits the signal synchronization signal according to the NTP standard to the terminal network device, that is, the client terminal 110 (step S22).

At this time, the switching board 210 gives priority to the first network link, and if the first network link is automatically switched to the second network link due to a failure of the first network link, the switching board 210 disconnects the connection with the second network link. A first link maintenance function may be executed that releases and automatically switches to the first network link. In addition, the switching board 210 maintains the connection with the second network link until the second network link fails when the first network link is restored when the first network link and the second network link have equal priority. The second link maintenance function may be executed.

FIG. 11 is a flowchart illustrating an operation of a control board in an intelligent access redundancy method on a network according to an embodiment of the present invention.

Referring to FIG. 11, the control board 220 is connected to the monitoring server 400 through the Internet and performs authentication through a login and password input from an administrator. (Steps S51 and S52).

The control board 220 collects switching data from the switching board 210. In the case where the network transmission / reception server 400 includes four port sets, the control board 220 collects switching data collected from each port set. The status information of the device 200 is transmitted to the monitoring server 400 (steps S53 and S54).

Accordingly, the monitoring server 400 outputs a monitoring main screen when an administrator logs in and inputs or selects a serial number of the network transceiver 200, and an alarm event, menu change, and equipment information through the monitoring main screen. Etc. can be confirmed.

In an intelligent access redundancy system in a network according to an embodiment of the present invention, a network transceiver is also applied to a CCTV control system so that when an edge switch failure occurs, a switch is automatically switched from a first port to which a corresponding edge switch is connected to a second port to provide a CCTV image. It can transmit and check and control access control and CCTV images through automatic bypass function in case of power failure of network transceiver.

In addition, intelligent access redundancy on the network can transfer data from the 10/100 / 1000BaseTX Ethernet link, from the master link to the backup link in the event of a link failure, enabling server, router, and fail-safe links. It can be applied to major Ethernet equipment that needs to be used.

In other words, by continuously monitoring the master link and backup link without interrupting the data transmission of the master link and backup link, in case of failure of the master link, the data is automatically routed to the backup link to bypass the data and the continuity of the network link is maintained. As a result, a warning tone can be generated to inform the administrator of the failure situation.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

110: client terminal 120: edge switch
121: master switch 122: backup switch
130: router / metro switch 200: network transceiver
210: switching board 220: control board
230: LED indicator 240: warning sound generating means
250: Auto / manual switching button 300: RME
400: monitoring server 500: call center

Claims (16)

A plurality of client terminals, at least one edge switch connected to the client terminals, a backbone switch for load balancing traffic of a server or a network, a firewall connected to the backbone switch, and a router connected to the firewall / In an intelligent access redundancy system on a network including a metro switch and the Internet,
The edge switch is composed of a master switch and a backup switch pair,
Matching the master switch and the backup switch pair and one client terminal, and performing data transmission of the client terminal to the second network link connected to the backup switch when a failure occurs on the first network link connected to the master switch. A network transceiver configured to perform a duplication operation on the client terminal side,
The network transceiver may include at least one switching board performing a redundant relay operation for a network path through a link connection / disconnection operation between the master switch and the backup switch according to a failure or a failure recovery situation on a network link; A network board state and a port currently in operation with a control board that performs redundant automatic relay operations for network paths while ensuring continuity of the network link to communicate with the at least one switching board to perform zero delay network communication. At least one LED indicator for indicating a and warning sound generating means for generating a beep when the network link failure, and automatic / manual switching button for setting the automatic switching mode and the manual switching mode of the network link,
The control board executes the automatic switching mode or the manual switching mode according to the operation of the automatic / manual switching button, and on / off operation of the LED indicator and warning sound generating means according to the state of the network link. Intelligent access redundancy system on a network, characterized in that for controlling.
delete The method of claim 1, wherein the at least one switching board,
A first port to which the master switch is connected;
A second port to which the backup switch is connected;
A common port to which the client terminal is connected;
First to third relays connected to the first port, the second port, and the common port, respectively;
A relay driver for opening and closing the first to third relays;
A differential receiver connected to the master switch and the backup switch and detecting a link information signal transmitted from the master switch and the backup switch and outputting a differential signal;
At least one monostable multivibrator for receiving a differential signal from the differential receiver and outputting an output pulse in a metastable state only for a set time interval and then extinguishing and returning to a stable state; And
The output pulse of the monostable multivibrator is input to identify a failure link between the first network link and the second network link, and operates a first relay or a second relay through the relay driver, and communicates with the control board. Intelligent access redundancy system on a network, characterized in that it comprises a controller for performing a network path setting.
delete The method of claim 1, wherein the control board
And a power monitoring circuit configured to perform a bypass function to directly connect the edge switch and the client terminal when the power supply is interrupted or the power is re-applied.
The method of claim 1, wherein the control board
An intelligent access redundancy system on a network comprising an Ethernet connection terminal, a USB connection terminal and an SD card (Secure Digital Card) input terminal.
The method of claim 1, wherein the control board
The GPS receiver further receives time information of the GPS satellites and transmits a synchronization signal according to the NTP (Network Time Protocol) standard to the switching board to synchronize the time of each client terminal connected to the switching board through the network. Intelligent access redundancy system on a network, comprising.
The system of claim 1, wherein the intelligent access redundancy system on the network is
Real-time checking of the status of each network transceiver device through mutual communication with the network transceiver device, changing the settings of the network transceiver device, and indicating an alarm event occurred in a specific network transceiver device to inform the failure of the network link. Intelligent access redundancy system on a network, characterized in that it further comprises a monitoring server.
The method of claim 1, wherein the network transceiver is automatically switched to the second network link when a failure of the first network link occurs.
And when the first network link is restored, disconnects from the second network link and automatically switches to the first network link.
The method of claim 1, wherein the network transceiver is automatically switched to the second network link when a failure of the first network link occurs.
And when the first network link is restored, maintain the connection with the second network link until a failure occurs in the second network link.
Intelligent access on a network performed by a plurality of client terminals, at least one edge switch connected to the client terminals, and a network transceiver supporting a duplex operation to a second network link when a first network link fails In the redundancy method,
a) the network transceiver connects the edge switch into a master switch and a backup switch pair to connect the master switch to a first port, the backup switch to a second port, and to connect the client terminal to a common port Including at least one set of ports;
b) the network transceiver includes a switching board for performing a redundant relay operation of the client terminal side, the switching board, when detecting the failure of the first network link, disconnects the first port, Connecting the second port to allow traffic of the client terminal to be transmitted over the second network link; And
c) the network transceiver includes a control board configured to communicate with the switching board to perform a control operation such that zero delay network communication is executed, the control board collecting switching data from the switching board, and And transmitting the state information created on the basis of the collected switching data to the outside.
The method of claim 11, wherein the control board in step c),
Displaying a currently active network link status and a port connection;
Generating a beep upon failure of the network link; And
And executing an automatic switching mode or a manual switching mode of the redundant relay operation when the automatic switching mode and the manual switching mode of the network link are set by an administrator.
The method of claim 11, wherein the switching board in step b),
b-1) checking the states of the first port, the second port, and the common port;
b-2) If the first port is disconnected when the first port is in a relay ON state and the automatic switching mode of the redundant relay operation is performed, confirm whether the second port is connected. And changing a path from the first network link to the second network link with an automatic switching time when the second port is connected, and connecting the control board to transmit switching data; And
b-3) if the second port is disconnected when the first port is in a relay OFF state and the automatic switching mode of the redundant relay operation is performed, confirming whether the second port is connected. And changing the path from the second network link to the first network link with the automatic switching time when the first port is connected, and connecting the control board to transmit the switching data. Intelligent access redundancy method.
The method of claim 11, wherein the control board in step c),
Real-time check of the status of the network transceiver, change the settings of the network transceiver, and communicate with each other through the network and the monitoring server that informs the failure status of the network link by displaying an alarm event occurred in a specific network transceiver Intelligent access redundancy method on a network, characterized in that the.
The method of claim 11, wherein in the step b), when the switching board is automatically switched to the second network link when the first network link fails,
A first link maintenance function that disconnects from the second network link when the first network link is restored and automatically switches to the first network link; and failure of the second network link occurs when the first network link is restored. Supporting any one of the second link maintenance function to maintain the connection with the second network link until the intelligent access redundancy method on the network.
The method of claim 11, wherein the control board in step c)
Continuously receiving time information of GPS satellites transmits a synchronization signal according to the NTP (Network Time Protocol) standard to the switching board, the switching board to synchronize the time of each client terminal connected to the common port through the network The method further comprises the step of intelligent access redundancy on the network.

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