JP3784285B2 - Ethernet switch board management system and Ethernet switch board - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an Ethernet network switch board management system and an Ethernet work switch board.
[0002]
[Prior art]
In recent years, the Internet has been thriving and developing. World Wide Web (abbreviated as WWW) provides a conventional E-MAIL transmission service and various multimedia services such as voice, drawings and dynamic images. Linking to a network at home is part of many people's daily activities because people in society easily acquire a wealth of diverse information services via the aforementioned paths. Network operators have designed various high-speed network equipment such as a cable modem (A Cable Modem) or an ADSL modem (Asymmetric Digital Subscriber line Modem) according to the above-mentioned trend, and have improved the transmission speed of the network. In addition, in order to increase network use functions, network operators design various network peripheral equipment such as Voice Over IP Device (VOIP) and provide online network communication services to users. Communication costs and international communication costs are greatly reduced.
[0003]
[Problems to be solved by the invention]
Currently, various network structures are classified into the following three types according to the difference in the link method between the client end and the Internet.
(1) ADSL network structure:
As shown in FIG. 1, an ADSL communication interface 11 and a router 12 are added to an Ethernet work card (Ethernet NIC) 10 at the client end. The Ethernet work card 10 directly uses a router 12, is linked to a server end 14 via a telephone wire 13, and transmits / receives an ADSL or ATM packet signal. The server end 14 uses an ATM network facility, links to the Internet 15 via an optical fiber 131, transmits an ATM packet signal to the Internet 15, or is transmitted from the Internet 15. The ATM packet signal is received. In the above-described network structure, packets are transmitted by the optical fiber 131, so that the transmission speed is improved by 640 Kbytes for upload transmission and 1.5 Megabytes for download. However, if the ATM network is not installed at the server end due to the arrangement of the hardware structure, the high-speed transmission service of the network structure cannot be realized, so that the installation cost is extremely high, and it is difficult to spread it to users of general networks.
[0004]
(2) Cable Modem network structure:
As shown in FIG. 2, in the link structure of the network system, the Ethernet work card 20 at the client end is linked to a cable modem 201. The Ethernet work card 20 at the client end uses a cable modem 201, and via a cable 21, a node equipment (Node node) installed in a housing complex by a cable television system provider (or a network system communication company or server). Link to 22). A node facility (Node) 22 uses an optical fiber 23 and is linked to a network facility 24 of a network system communication company. The network facility (Node) 24 is further linked to the Internet 25 via the optical fiber 23 to transmit the packet signal of the Ethernet work card 20 to the Internet 25 or to a packet (packet) transmitted from the Internet 25. ) Receive the signal. In the network structure described above, a node equipment (Node) 22 installed in a housing complex by a cable TV system supplier is connected to an optical fiber 23 having a high-speed transmission performance through the existing cable 21 line of the cable TV system supplier, and 100 to 500 client ends of the housing estate. The network transmission speed at the client end is improved. However, the network structure described above is generally widely used only in housing estates using a cable television system. When the network structure described above is adopted, when a cable TV system provider maintains and manages the node equipment installed in the housing complex, the transmission management packet (packet) signal and the general data packet (packet) signal are transmitted through the same optical fiber. Since it is transmitted via the network, it is easy to be invaded by a network hacker, resulting in problems of monitoring, control and management.
[0005]
(3) Telephone line (UTP) network structure:
As shown in FIG. 3, in the link structure of the network system, an Ethernet work card 30 at the client end is provided with an ADSL communication interface (not shown) and a lower control circuit (not shown). The Ethernet work card 30 uses a Laurer control circuit, and a server end (or a network system communication company) is installed in a housing complex via a telephone line 31 of an existing unshielded twisted pair (abbreviated as UTP). The Ethernet work switch board (Switch) 32 is linked. The switch board 32 is further linked to an Ethernet work facility 34 via an optical fiber 33. The equipment 34 of the Ethernet work is linked to the Internet 35 via the optical fiber 33, and the packet signal of the Ethernet work card 30 is transmitted to the Internet 35, or the packet signal transmitted from the Internet 35 is received. To do. In the network switch board 32 in which the server end is installed in the housing estate in the above-described network structure, the optical fiber 33 having a high-speed transmission performance is wired to a certain number of client ends of the housing estate by the existing telephone line 31. Network transmission speed has been improved. The network structure described above is a network structure that is currently well applied to housing estates. In the above-described network structure, the network switch board 32 installed in the housing complex is arranged at a predetermined interval from the server end, and is not maintained and managed at any time near the maintenance person. In addition, maintenance and management online via a network is generally limited to a simple network management protocol of SNMP (Simple Network Management Protocol) that employs a network management system. The board 32 cannot be maintained and managed immediately online. Since maintenance personnel have to go to the installation site of the network switch board 32 to perform maintenance and management, management blind spots and problems arise. In addition, maintenance and management costs are significantly increased, adversely affecting the transmission service quality of the network.
SUMMARY OF THE INVENTION An object of the present invention is to provide an Ethernet work switch board management system and an Ethernet work switch board that can be executed online.
[0006]
[Means for Solving the Problems]
According to the management system for an Ethernet work switch board according to the present invention, the Ethernet work switch board uses a network interface circuit, is linked to the server end via the first line, and is connected to the client end and the server end. Send and receive data packets between. The server end transmits the network management packet via the second line to the Ethernet work switch board. The Ethernet switch board receives the network management packet transmitted from the server end, and sets the management value of the installed SNMP agreement management database (MIB). The Ethernet work switch board monitors and controls the network interface circuit based on the management value of the MIB. The network administrator analyzes and determines the test results of the network interface circuit to be transmitted, and monitors, controls and manages the network switch board online.
[0007]
The Ethernet work switch board according to the present invention receives an ordinary data packet transmitted from the server end via the first line, or transmits an ordinary data packet to the server end. The network management packet transmitted from the circuit and the server end is received by the second line, and based on the received network management packet, the management value of the MIB which is the management database of the SNMP agreement is installed via the installed SNMP agreement. A network management control circuit to be set, and a plurality of network interface circuits connected to the Ethernet work switch circuit and the network switch card at the client end, respectively. The network management control circuit transmits the MIB management value to the Ethernet work switch circuit via the bus. The Ethernet work switch circuit monitors and controls the network interface circuit according to the MIB management value, writes the test result to the MIB, and the SNMP agreement Collects test results and transmits them to the server end, and the network administrator at the server end analyzes and judges the test results.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
According to the Ethernet network switch board management system and the Ethernet work switch board according to the present invention, the network switch board can be immediately brought online from the server end in the telephone line (UTP) network structure applied to the housing estate. The problem of being unable to maintain and manage has been resolved. According to the present invention, the network switch board can be immediately maintained and managed online from the server end in the conventional network structure.
[0009]
Currently, a network management application program used for a network generally adopts a simple network management agreement which is SNMP (Simple Network Management Protocol). The SNMP agreement is a communication agreement built in the seventh transmission layer of the OSI mode (Open System Interconnection Model). The SNMP agreement collects management information such as device characteristics, packet traffic and errors from network devices. Management information is collected by a network device and recorded in a management data base (hereinafter abbreviated as MIB). The network administrator collects information from the MIB via the SNMP agreement and manages the network online. When the SNMP agreement is linked to a network device via the lower transmission layer UDP (User Datagram Protocol, hereinafter abbreviated as UDP), the UDP agreement sends a link message to the standby packet for transmission. Write to. Furthermore, lower layer IP (Internet Protocol) agreements transmit packets. However, the provided transmission is a service that is not link guidance, and there is no link relationship with the other party in advance, and no errors in transmission are detected. For this reason, the transmission service provided by the UDP agreement is not reliable. Moreover, since the upper level SNMP agreement is a passive network management system, the partner does not automatically provide information unless the network administrator asks a question. Therefore, when a large number of packets are transmitted, even if the UDP agreement is lost due to the mistakes that occur in the transmission process, the SNMP agreement does not confirm the loss of the packet, so the software can manage the network immediately on the network. Unable to provide service.
[0010]
As shown in FIG. 4, in the conventional telephone line (UTP) network structure, the client end 40 uses an existing telephone line 41 and an Ethernet network switch board 42 installed in the housing complex. Link. The network switch board 42 further links the server end 44 and the Internet 45 in this order via the optical fiber 43, and transmits a packet signal of the client end 40 to the Internet 45, or a packet transmitted from the Internet 45. (Packet) signal is received. In the network structure described above, the network interface circuit (I / O port) linked to the client terminal 40 of the network switch board 42 does not have a telephone circuit detection mechanism provided at the input / output port of the telephone switch board. Therefore, the hardware cannot be mixed with the network line, and the network interface circuit of the network switch board 42 cannot be immediately monitored, controlled and managed. Further, in the above-described network structure, the different client ends 40 are linked with the server end 44 via the network switch board 42 and the correlated optical fiber 43 to transmit a packet signal, and the server end 44 has the same path. Since the network switch board 42 is monitored, controlled, and managed via the network, it is easy to be invaded by a network hacker, resulting in problems of monitoring, control, and management.
[0011]
An embodiment of the present invention will be described below with reference to the drawings.
As shown in FIG. 5, an Ethernet network switch board 50 according to an embodiment of the present invention includes an Ethernet work switch circuit 52, a network management control circuit 51, and a plurality of network interface circuits 53. The Ethernet work switch circuit 52 has the same structure as the control circuit of a general Ethernet network switch board, receives a general data packet transmitted from the server end, passes through the network interface circuit 53, and is connected to the client. The data packet is transmitted to the end Ethernet work card, or a general data packet transmitted from the client end Ethernet work card is transmitted to the server end. The network management control circuit 51 receives a network management packet transmitted from the server end. The network interface circuit 53 is enabled or disabled in an SNMP agreement management database (hereinafter abbreviated as MIB) 512 via the SNWP agreement 513 installed based on the network management packet received by the CPU 511. Set the management value to disable. The network management control circuit 51 transmits the management value of the management database to the Ethernet work switch circuit 52 via the bus (Bus) 54. The Ethernet work switch circuit 52 monitors and controls the network interface circuit 53 according to the management value. The network interface circuit 53 is provided with a test circuit 531. When the network interface circuit 53 is not used, the network management control circuit 51 transmits an enable signal or a disable signal to the test circuit 531 according to the management value of the management database 512 and starts the test circuit 531. The network interface circuit 53 is tested, and the result of the test is written in the MIB 512.
[0012]
As shown in FIGS. 5 and 6, the network interface circuit 53 is linked to the Ethernet work card 40 at the client end via the telephone line 41, and via the Ethernet work switch circuit 52 and the optical fiber 43 to the server end 44. Link. Transmission of general data packets between the client end 40 and the server end 44 is performed by the Ethernet work switch circuit 52, and reception and dispatch of the packets are executed. When the server end 44 monitors, controls and manages the switch board 50, the monitoring, control and management paths are transmitted to the network management control circuit 51 via the independent line 70 to transmit the monitoring, control and management packet information. Is prevented from being infiltrated by network hackers. The network interface circuit 53 is provided with a test circuit 531. When the network interface circuit 53 is not used, the Ethernet work switch circuit 52 starts the test circuit 531 with the management value of the MIB 512. The network interface circuit 53 is tested, and the result of the test is written in the MIB 512. The SNMP agreement 513 collects the test results and transmits them to the server end 44 via the independent line 70. Accordingly, the network administrator at the server end 44 can analyze and determine the test results transmitted, and the server end 44 can immediately monitor, control and manage the network switch board 50 at a long distance and online. Therefore, maintenance and management costs are greatly reduced, and the transmission service quality of the network is effectively improved.
[0013]
The network interface circuit 53 employs a VDSL (Very High Speed Digital Subscriber Line) interface circuit. Since the interface circuit of VDSL has a characteristic of transmitting data of about 12 Mega Bytes in the longest effective distance range of 1.5 km, the network switch board 50 and the Ethernet work card 40 at the client end have a network structure of a telephone line (UTP). It is applied to the interface circuit for connection. Therefore, the limitation of the longest effective distance of 100 m of the unshielded twist line of the conventional Ethernet work interface circuit is broken.
[0014]
According to another embodiment of the present invention, when the server end 44 monitors, controls and manages the network switch board 50, it transmits the network management packet to the network switch board 50 quickly and accurately. Uses optical fiber. Management packets are transmitted by a transmission method of a dedicated line, ADSL or cable modem (MODEM) 60.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a conventional network structure.
FIG. 2 is a schematic diagram showing a conventional network structure.
FIG. 3 is a schematic diagram showing a conventional network structure.
FIG. 4 is a schematic diagram showing a conventional network structure.
FIG. 5 is a schematic diagram showing a switch board for an Ethernet network according to an embodiment of the present invention.
FIG. 6 is a schematic diagram showing a switch board for an Ethernet network according to an embodiment of the present invention.
[Explanation of symbols]
40 Client end 41 Telephone line 43 Optical fiber 44 Server end 50 Ethernet work switch board 51 Network management control circuit 52 Ethernet work switch circuit 53 Network interface circuit 512 Management database 513 SNMP agreement 531 Test circuit

Claims (8)

The Ethernet work switch board uses one or more installed network interface circuits, links to the server end via the first line, and transmits and receives data packets between the client end and the server end. The server end transmits a network management packet for monitoring, controlling and managing the Ethernet work switch board to the Ethernet work switch board via the second line, and the Ethernet work switch board is transmitted from the server end. The network management packet to be transmitted is received, the management value of the MIB which is the management database of the installed SNMP agreement is set, and the Ethernet work switch board sets the one or more network interface circuits based on the management value. Monitoring and Switchboard management system for the Ethernet, characterized by control. The Ethernet work switch board writes test results to the MIB, the SNMP agreement collects the test results and transmits them to the server end, and the network administrator at the server end analyzes and judges the test results. The management system for an Ethernet work switch board according to claim 1. The Ethernet switch board transmits an enable or disable signal according to the management value to a test circuit installed in the network interface circuit, starts the test circuit, tests the network interface circuit, and outputs a test result. 2. The management board management system for an Ethernet work board according to claim 1, wherein the management information is written in the MIB, and the SNMP agreement collects the test result and transmits it to the server end. 2. The Ethernet work switch board management system according to claim 1, wherein the network interface circuit is a VDSL interface circuit. 2. The Ethernet switch board management system according to claim 1, wherein the second line is an optical fiber and transmits the network management packet by a modem. An Ethernet work switch circuit for receiving a general data packet transmitted from the server end via the first line, or transmitting the general data packet to the server end;
A network management packet transmitted from the server end is received on the second line, and based on the received network management packet, the management value of the MIB, which is the management database of the SNMP agreement, is installed via the installed SNMP agreement. A network management control circuit to be set;
A plurality of network interface circuits connected to the Ethernet work switch circuit and the network switch card at the client end,
The network management control circuit transmits a management value of the MIB to the Ethernet work switch circuit via a bus, and the Ethernet work switch circuit monitors and controls the network interface circuit according to the management value of the MIB, and outputs a test result. The switch board for Ethernet work, wherein the test result is written in the MIB, the SNMP agreement collects the test result and transmits it to the server end, and an administrator of the network at the server end analyzes and determines the test result . A test circuit is provided in the network interface circuit, the test circuit is connected to the Ethernet work switch circuit, and the Ethernet work switch circuit transmits an enable signal or a disable signal to the test circuit according to a management value of the MIB. 7. The Ethernet work switch board according to claim 6, wherein the test circuit is started, the network interface circuit is tested, and the test result is written in the MIB. 7. The Ethernet work switch board according to claim 6, wherein the network interface circuit is a VDSL interface circuit.

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