KR101231942B1 - Method and system managing port information of internet terminal - Google Patents

Abstract

A method and a management system for managing port information of an internet terminal according to the present invention include: a first step of an internet terminal requesting an IP address to a Dynamic Host Configuration Protocol (DHCP) server; A second step of acquiring information of the Internet terminals exchanged in the first step; A third step of acquiring and storing management information of the Layer 2 switch including port information of the Layer 2 (Data link layer) switch; A fourth step of extracting management information corresponding to the information of the Internet terminal obtained in the second step from the management information stored in the third step; And a fifth step of storing the management information extracted in the fourth step corresponding to the internet terminal.

Description

TECHNICAL AND SYSTEM MANAGING PORT INFORMATION OF INTERNET TERMINAL}

1 is a block diagram showing an Internet connection environment according to the present invention.

2 is a flowchart illustrating a procedure of obtaining port information of an internet terminal according to the present invention.

3 is a flow chart showing the operation of the port information acquisition server according to the present invention.

The present invention relates to a method for managing port information of an internet terminal and a management system thereof, and more particularly, to a technology for acquiring information on a line physically connected to an internet terminal of a subscriber connected to the internet.

The Internet is one of the world's largest networks with multiple communication networks. The Internet is as diverse as the world's scale. The Internet includes devices such as various routers and switches as well as a backbone network that forms the basis of the Internet.

The Internet service structure of a typical Internet Service Provider (ISP) is composed of a concentrator device that accommodates an Internet terminal of a subscriber and a plurality of various routers connected to a backbone network.

In particular, Internet service providers often use the Dynamic Host Configuration Protocol (DHCP) scheme to efficiently use IP (Internet Protocol) address resources, which are the address systems used on the Internet. An IP address is an address system used on the Internet and is a unique address given to each terminal and other equipment operating on the Internet.

The DHCP method dynamically allocates an IP address resource available to an Internet service provider every time the subscriber's Internet terminal accesses the network. The DHCP method has the advantage of being able to use limited IP address resources efficiently.

The Internet service provider connects the Internet terminal to the router using a DSLAM (Digital Subscriber Line Access Multiplexors) device that centrally connects the subscriber's Internet terminal to a predetermined unit. The router allows the Internet terminal to access a DHCP server that performs a DHCP function. The Internet terminal is classified as a DHCP client in the DHCP server, requests an IP address assignment, dynamically receives an IP address resource from the DHCP server, and accesses the Internet. Typically, the DSLAM equipment is referred to as a Layer 2 (L2) switch.

In such an Internet access environment, an Internet terminal is connected to the Internet through an L2 switch, and dynamically receives an IP address to access the Internet. In this process, the Internet terminal does not provide a procedure for providing information about which L2 switch is connected to the Internet and which port of the L2 switch is used to access the Internet.

This is because it does not provide information on the L2 switch during the operation of allocating an IP address by a DHCP server and managing an Internet terminal of another Internet service provider. This feature has a problem that it is difficult to manage the port information of the Internet terminal having regional characteristics, so that efficient port management is difficult.

In other words, L2 switches are installed regionally. Therefore, a specific port of the L2 switch means a specific region, and through this information, the Internet service provider can perform service management of the Internet terminal. For example, an Internet service provider may provide a Quality of Service (QoS) management and location-based service using information on a port where a specific Internet terminal receives a service.

However, the current Internet access environment has a problem that it is difficult to provide a variety of services and management of the Internet terminal because it does not acquire port information, etc. that the Internet terminal accesses.

An object of the present invention for solving the above problems is, when accessing the Internet terminal of the Internet terminal, the MAC (Media Access Control) address and the router information of the Internet terminal transmitted in the process of the Internet terminal is assigned an IP address through a DHCP server By using it can obtain and manage information and port information of the L2 switch connected to the Internet terminal.

A method of managing port information of an internet terminal for achieving the above object may include a first step of requesting, by the internet terminal, an IP address assignment to a dynamic host configuration protocol (DHCP) server; A second step of acquiring information of the Internet terminals exchanged in the first step; A third step of acquiring and storing management information of the Layer 2 switch including port information of the Layer 2 (Data link layer) switch; A fourth step of extracting management information corresponding to the information of the Internet terminal obtained in the second step from the management information stored in the third step; And a fifth step of storing the management information extracted in the fourth step corresponding to the internet terminal.

The port information management system of the Internet terminal for achieving the above object is an edge router that extracts the connection information of the Internet terminal when the Internet terminal requests an IP (Internet Protocol) address assignment to a Dynamic Host Configuration Protocol (DHCP) server ( Edge Router); At least one port information acquisition server for acquiring and storing management information of a Layer 2 (Data Link Layer) switch; A control server for receiving port information from an edge router and requesting port information acquisition; And a port analysis server for storing port information by obtaining port information corresponding to the Internet terminal from the port information acquisition server according to the port information acquisition request of the control server.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the preferred embodiment of the present invention, an Internet service provider assigns an IP (Internet Protocol) address using a DHCP (Dynamic Host Configuration Protocol) method as an example.

1 is a block diagram showing an Internet connection environment according to the present invention.

Internet connection environment according to the present invention is the Internet terminal 10, DSLAM (20), FES (30), backbone network 100, DHCP server 110, edge router 120, routers (130, 140), control Server 200, port analysis server 300 and the port information acquisition server 400 is included.

The Internet terminal 10 is a terminal used by an Internet service subscriber and is a terminal used by the subscriber to access the Internet. The Internet terminal 10 may be a PC that is typically connected to the Internet at home.

The DSLAM 20 (Digital Subscriber Line Access Multiplexor) is a kind of aggregation device used to connect the Internet terminal 10 to the Internet. A concentrator is a device that connects a predetermined area and a predetermined number of Internet terminals 10 to one to connect to the Internet, and is an equipment that increases efficiency of a transmission path.

FES 30 (Fast-Ethernet Switch) is a similar equipment to the DSLAM (20) equipment, and aggregates the Internet terminal 10. An internet service provider may provide an internet service through various methods. For example, there may be an Internet service provider using a cable modem and an Internet service provider using a telephone modem. Such an Internet service provider will use an Internet access method suitable for the service environment of the service provider. In other words, there may be a method of providing an Internet service using a digital subscriber line modem (xDSL) series and an Internet service providing method using an Ethernet method. The FES 30 is a kind of concentrator used in an internet service using the Ethernet method.

Typically, equipment such as DSLAM 20 and FES 30 is referred to as a Data Link Layer (L2) switch.

The routers 130 and 140 are devices that receive L2 switches and transmit packets within the network. Routers 130 and 140 are representative Layer 3 (Layer 3; Network Layer) equipment, and check the destination address of the packet using a function called routing to transmit the packet to the destination, and use the optimal path for transmission. It has a routing function to select.

The Internet 300 is a network in which several communication networks are combined. Therefore, a network in which an Internet service provider accepts its subscribers and accesses the Internet is also a network. The routers 130 and 140 serve to route packets in the communication network of the Internet service provider. Typically, such routers 130 and 140 are used in a form in which routers 130 and 140 are allocated to a predetermined region.

The edge router 120 refers to a router 130 through which an Internet service provider connects to an external network such as the real Internet. Edge router 120 is also commonly referred to as end router 130, and is located at the end of one network to connect one network with another network. In addition, the edge router 120 according to the present invention analyzes the packet transmitted to the DHCP server 110, the MAC (Media Access Control) address of the Internet terminal 10 to be allocated an IP address resource and the connected router 130 Check the information such as IP address.

The backbone network 100 is a network that forms the basis of the Internet. Typically, the backbone network 100 performs a communication between small networks based on a switching system that operates at a high speed.

The DHCP server 110 is a server for allocating an IP address resource provided in the Internet. The DHCP server 110 checks the available IP address resources for the Internet terminal 10 requesting the allocation of the IP address resources and allocates them. Thereafter, the DHCP server 110 determines the recovery and reuse of address resources according to the operation procedure of DHCP.

The control server 200 receives information about the Internet terminal 10 from the edge router 120 and transmits the information to the port analysis server 300.

The port analysis server 300 receives information about the Internet terminal 10 from the control server 200 and divides the information by the router 130 connected to the Internet terminal 10. The port analysis server 300 has information about the router 130 existing in the network of the Internet service provider, and distinguishes the information of the Internet terminal 10 provided from the control server 200 for each router 130.

The port information acquisition server 400 plays a role of acquiring port information of the Internet terminal 10 from the L2 switch equipment of the router 130. The port information acquisition server 400 periodically acquires the MAC address of the Internet terminal 10 and the port ID (Identification) information of the L2 switch by communicating with the L2 switch device using the Simple Network Management Protocol (SNMP). Store in A predetermined number of L2 switch equipments are connected to the router 130, and an internet terminal 10 is connected to the L2 switch equipments.

In the present invention, the control server 200 receives the MAC address of the Internet terminal 10 and the address of the router 130 to which the corresponding Internet terminal is initially connected from the edge router 120 to receive port information of the corresponding L2 switch equipment. To acquire.

The control server 200 receives the MAC address obtained from the edge router 120 and the IP address of the router 130 and transmits them to the port analysis server 300. The port analysis server 300 queries the port information acquisition server 400 based on the MAC address and the IP address of the router 130. The port information acquisition server 400 obtains port information corresponding to the MAC address and router 130 IP address of the Internet terminal 10 stored in its DB, and responds to the port analysis server 300.

Referring to the operation of the present invention in detail as follows.

2 is a flowchart illustrating a procedure for obtaining port information of an internet terminal according to the present invention.

When power is supplied to the Internet terminal 10 and the Internet terminal 10 is driven (S2), the Internet terminal 10 attempts to access the Internet. The Internet terminal 10 connected to the network of the Internet service provider requests the DHCP server 110 to allocate an IP address and enters a state where the Internet service can be used (S4).

The process of step S4 is as follows. When the Internet terminal 10 requests the DHCP server 110 to allocate an IP address resource, the router 130 to which the internet terminal 10 first connects becomes the DHCP relay router 130. The DHCP method operates using broadcast. If the DHCP server 110 exists in the same subnetwork, it may use a broadcast to forward packets within the subnetwork. In such an implementation, since the DHCP server 110 must exist for each subnetwork, the DHCP server 110 may be operated by integrating a predetermined number of subnetworks. The DHCP relay serves to use a DHCP server 110 existing in another subnetwork when a predetermined number of subnetworks are integrated to operate the DHCP server 110.

The router 130 acting as a DHCP relay transmits a packet having a content requesting for IP address assignment to the DHCP server 110. Packets transmitted through the network of the Internet service provider pass through the edge router 120.

The edge router 120 checks the packet when the packet requesting the DHCP server 110 to allocate the IP address passes. The packet requesting the DHCP server 110 to allocate an IP address includes a request for assigning an IP address to an option field in the packet. Therefore, the edge router 120 checks the packet according to whether the information is included.

The edge router 120 checks the various information of the Internet terminal 10 included in the packet requesting the assignment of the IP address and transmits the information to the control server 200 (S6). Various information of the Internet terminal 10 includes information such as the MAC address of the Internet terminal 10 and the IP address of the DHCP relay router 130.

The control server 200 stores the information of the Internet terminal 10 received from the edge router 120 in the DB. Next, the control server 200 transmits the IP address of the DHCP relay router 130 and the MAC address of the Internet terminal 10 to the port analysis server 300 (S8).

The port analysis server 300 checks the port information acquisition server 400 corresponding to the IP address of the DHCP relay router 130 received from the control server 200 (S10).

The Internet terminal 10 in which the port information acquisition server 400 manages port information is different. The port information acquisition server 400 manages different Internet terminals 10 according to the DHCP relay router 130.

 Therefore, the port analysis server 300 is to distinguish the corresponding port information acquisition server 400 according to the DHCP relay router 130.

The port analysis server 300 transmits the information of the Internet terminal 10 to the port information acquisition server 400 (S12). The port information acquisition server 400 obtains port information corresponding to the MAC address of the received Internet terminal 10 (S14). The method of obtaining port information is as follows.

The port information acquisition server 400 includes a database (DB), and the DB includes port information corresponding to the MAC address of the Internet terminal 10 managed by the port information acquisition server 400 and the IP address of the router 130. Stored. The port information acquisition server 400 periodically acquires port information from the L2 device by using a Simple Network Management Protocol (SNMP) query. At this time, the port information of all the Internet terminal 10 managed by the port information acquisition server 400 is collected using the SNMP query.

Therefore, the port information acquisition server 400 obtains the port information stored in its DB and transfers it to the port analysis server 300 (S16). The port analysis server 300 stores the port information received from the port information acquisition server 400 in its DB (S18).

3 is a flowchart illustrating an operation of a port information acquisition server according to the present invention.

The port information acquisition server 400 periodically transmits an SNMP query message to the L2 switch device that it manages (S21). The L2 switch device receiving the SNMP query message refers to a MIB (Management Information Base) that stores management information of the L2 switch device.

MIB is a kind of database that stores management information according to the normal operation of L2 switch equipment. The MIB stores MAC addresses and corresponding port information of the Internet terminals 10 accommodated by the L2 switch device.

The L2 switch obtains port information corresponding to the requested MAC address with reference to the MIB and responds to the port information acquisition server 400 (S23). The port information acquisition server 400 receives the response of the L2 switch and stores it in its DB (S25).

In this case, the port information acquisition server 400 may store the IP address of the router 130 in order to distinguish the corresponding router 130 when there are a plurality of routers 130 managing their port information.

As described above, the port information management method and management system of the Internet terminal according to the present invention, by obtaining port information that can indicate the connection location, etc., when the Internet terminal is connected to the Internet service, QoS (using QoS) using the port information ( Quality of Service) It is effective to provide various services based on service and location.

In addition, the preferred embodiment of the present invention is for the purpose of illustration, those skilled in the art will be able to various modifications, changes, substitutions and additions through the spirit and scope of the appended claims, such modifications and modifications are the following patents It should be seen as falling within the claims.

Claims (9)

delete A first step of obtaining access information of the Internet terminal when the Internet terminal requests an IP address assignment to a Dynamic Host Configuration Protocol (DHCP) server; A second step of acquiring and storing management information of the Layer 2 switch including port information of a Layer 2 (Data link layer) switch; And And a third step of extracting port information corresponding to the access information of the Internet terminal obtained in the first step from the management information stored in the second step, Connection information of the Internet terminal, And a media access control (MAC) address of the internet terminal and an IP address of a DHCP relay router of the internet terminal. The method of claim 2, wherein the DHCP relay router, The internet terminal relays the internet terminal in the process of receiving the IP address from the DHCP server and communicates with the DHCP server. The method of claim 2, The management information, And port information of the layer 2 switch, information of the internet terminal accommodated in a port of the layer 2 switch, and information of a layer 3 switch to which the layer 2 switch is connected. The method of claim 2, The third step, And managing the management information of the layer 2 switch using a simple network management protocol (SNMP). delete An edge router for extracting connection information of the internet terminal when the internet terminal requests an IP address assignment to a dynamic host configuration protocol (DHCP) server; At least one port information acquisition server for acquiring and storing management information of a Layer 2 (Data Link Layer) switch; A control server receiving the access information of the Internet terminal from the edge router and requesting to obtain port information; And A port analysis server for acquiring port information corresponding to the internet terminal from the port information acquisition server and storing port information according to the port information acquisition request of the control server; Connection information of the Internet terminal, And a media access control (MAC) address of the internet terminal and an IP address of a DHCP relay router of the internet terminal. The method of claim 7, wherein The port information acquisition server, The port information management system of the Internet terminal, characterized in that for obtaining the management information of the Layer 2 switch using a Simple Network Management Protocol (SNMP). 9. The method according to claim 7 or 8, The port information acquisition server, And a database for storing the management information.

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