KR100608911B1 - Method for autoconfiguration of routers in a network - Google Patents

Abstract

The present invention automatically configures a router in a network, and allows the environment settings of such a router to be automatically changed, thereby enabling a network router environment setting and changing method that can quickly cope with changes in quality of service (QoS) or network environment. It is about.

According to an aspect of the present invention, there is provided a method of automatically setting a router environment of a network, the method comprising: a home router being assigned a temporary address from an access router, and accessing the access router using the temporary address; The access router forwarding an address of a configuration server for setting up a router environment; Transmitting, by the home router, identification information of the home router to the environment setting server via the access router and a backbone router located above the access router; Generating and transmitting a router environment for the home router using the identification information and information predetermined for the home router; and using the information predetermined for the home router; And generating and delivering a router environment for the access router and the backbone router.

Autoconfiguration, Netconf, Router

Description

How to automatically set up and change the router environment for your network {METHOD FOR AUTOCONFIGURATION OF ROUTERS IN A NETWORK}             

1 is a view showing the operation of the conventional ARCP.

2 is a diagram showing the structure of a conventional NETCONF protocol.

3A and 3B are diagrams illustrating an automatic process for setting an environment of a router in a network according to an embodiment of the present invention.

4A and 4B illustrate a process of automatically changing an environment of a router of a network according to an embodiment of the present invention.

Figure 5 is a database of routers stored in the configuration server according to an embodiment of the present invention.

The present invention relates to a method of setting and changing the configuration of a network router, and in particular, by automatically setting the router in the network, so that the configuration of the router can be changed automatically, to automatically change the configuration of such a router The present invention relates to a method of setting and changing a network router that can cope with changes in a quality of service (QoS) or a network environment quickly.

Conventionally, in order to use a network, users or administrators of a router had to directly enter environment settings such as setting an interface to a router and selecting a router protocol. However, if you are not a network expert, it is difficult to set up the environment one by one, and when all the Internet Service Providers (ISPs) try to provide differentiated new services, all routers belonging to the ISP are configured. The administrator had to go and change it.

 In order to improve this inconvenience, the Automatic Router Configuration Protocol (ARCP) has been proposed, and the IETF (Internet Enhanced Task Force) has proposed the NETCONF protocol.

1 is a view showing the operation of the conventional ARCP.

ARCP (Automatic Router Configuration Protocol) is the predecessor of NETCONF. It works as follows. Referring to FIG. 1, an ARCP server 110 connected to the Internet 100 is connected. The ARCP server 110 is installed on a home gateway, a NAT firewall (Network Address Translation Firewall), or a personal computer (PC).

Initially, when the first routers 120 and 130 corresponding to an ARCP client are connected to the ARCP server 110, the routers 120 and 130 use a Dynamic Host Configuration Protocol (DHCP) from the ARCP server 110. Basic elements of the network, such as addresses, are assigned. The routers 120 and 130 receive router environment elements from the ARCP server 110 and operate as a DHCP relay agent. As such, when the client router 120 acts as a DHCP relay agent, when the other client 140 is connected to the lower portion, the client router 120 delivers the environmental elements in the same manner as above, and may be connected to the switching equipment 150. The ARCP server 110 detects and processes when a collision occurs when a new router accesses and assigns an address. However, according to the conventional ARCP, it is difficult to deliver necessary environmental elements to other networks, and it is difficult to layer the management because it is designed as a peer-to-peer model.

2 is a diagram showing the structure of a conventional NETCONF protocol.

Referring to FIG. 2, NETCONF is approaching in greater detail compared to the ARCP described above, and the authentication model 210 is essential, which greatly enhances security. The router's configuration is then defined in XML in data model blocks such as Data Modeling Language 220, Standard Data Models 230, and Proprietary Data Models 231. Extended Markup Language) allows for enhanced compatibility. In FIG. 2, the content 240 represents management configuration information in an XML form, the operations 250 represent operations for providing a remote procedure call (RPC) defined in NETCONF, and the RPC 260 represents an RPC. Represents a request and a response to an operation, and transport 270 represents a transport protocol for delivering messages. The authentication model 210 is provided with a subset of the data model from the data model blocks 230 and 231, and also from the operations 250 and the user identification transport form from the transport 270. Receive the request, and the request for the RPC (Remote Procedure Call) (260).

This NETCONF consists of a server and a client. When a client requests an environment setting, the server sets up an authentication task and an environment, converts it into XML, and sends it to the client. However, NETCONF is a connection-oriented protocol, and it is cumbersome to configure each interface in advance, and there is no structure for configuring the entire network managed by the server. Therefore, this NETCONF alone has a problem that it is difficult to process quickly when hierarchical and efficient router management is required or when an emergency occurs or when various various services are provided in connection with another network.

Korean Unexamined Patent Application Publication No. 2002-0017033 discloses a technique for referencing an environment setting from routers around a specific router and setting an environment for only a specific router itself. However, the above-described invention is limited to the router interface configuration, and also has a problem that it is impossible to set the environment for the entire network.

An object of the present invention for solving the above problems is to set up the router automatically, even if the user or administrator does not have any configuration when installing the router on the network, the ISP server manages the entire router by the Internet worm ( It is to suggest a way to cope immediately with security attacks that attack specific ports such as Internet Worm.

In accordance with an aspect of the present invention, there is provided a method for automatically setting a router environment of a network, comprising: a home router being assigned a temporary address from an access router, and accessing the access router using the temporary address; The access router forwarding an address of a configuration server for setting up a router environment; Transmitting, by the home router, identification information of the home router to the environment setting server via the access router and a backbone router located above the access router; Generating and transmitting a router environment for the home router using the identification information and information predetermined for the home router; and using the information predetermined for the home router; And generating and delivering a router environment for the access router and the backbone router.

In the present invention, the temporary address may be obtained using DHCP or a link-local address.

In addition, the link-local address preferably uses a DAD to prevent the use of overlapping addresses.

In addition, the router environment may be generated as CLI or XML, and the CLI or XML is preferably encrypted using a private key.

Further, the configuration server has a database for the router, wherein the database includes information about the router's ID and password, password flag, IP version, IP address, router environment, and packet length. It is done.

According to an aspect of the present invention, there is provided a method of automatically changing a router environment of a network, the method comprising: requesting, by a service client of a first ISP network, a predetermined service from a service server of a second ISP network; Transmitting, by the service server, a service environment edit request message requesting a service environment change to a second environment setting server of the second ISP network; The second configuration server performs an authentication operation using the identification information of the service server, and then, after setting the environment corresponding to the predetermined service, the second configuration server to the first configuration server of the first ISP network of the service client. Transmitting the ID and password and the requested service; After the first configuration server performs authentication using the identification information of the service client, the router environment corresponding to the home router, the access router and the backbone router of the first ISP network corresponding to the path of the service client. Generating and forwarding the generated information; and the second configuration server performs an authentication operation using the identification information of the service server, and then a home router and an access router of the second ISP network corresponding to the path of the service server. And generating and delivering a router environment corresponding to the backbone router.

Again, the router environment may be created as CLI or XML, and the CLI or XML is preferably encrypted using a private key.

In addition, the first configuration server or the second configuration server has a database for the router, the database of the router ID and password, password flag, IP version, IP address, router environment, and packet of It is characterized by including information about the length.

DETAILED DESCRIPTION A detailed description of preferred embodiments of the present invention will now be described with reference to the accompanying drawings. It should be noted that reference numerals and like elements among the drawings are denoted by the same reference numerals and symbols as much as possible even though they are shown in different drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

3A and 3B are diagrams illustrating a process for automatically setting an environment of a router of a network according to an embodiment of the present invention.

3A and 3B, in a network environment for automatically setting an environment of a router according to an embodiment of the present invention, a home router 310, an access router 320, A backbone router and a configuration server 340 are included, and the backbone router 330 is connected to the Internet 350. The home router 310 is a subscriber router for a service provided by an internet service provider (hereinafter, referred to as an 'ISP') used in a home or a SOHO. The access router 320 is a medium router used under the backbone router 330. The backbone router 330 is a very large router used in the main network of the ISP. The environment setting server 340 is a device for setting a router environment for the home router 310, the access router 330, and the backbone router 340.

When the home router 310 is newly mounted in such a network environment, the router environment for the home router 310 may be set as follows.

Referring to FIG. 3A, in order to automatically set an environment of a network router according to an exemplary embodiment of the present invention, before the home router 310 is installed, a user of the home router 310 may advance in advance to the home router ( Information about the user interface (310) (user ID, service provision, router model name, etc.) is registered in the configuration server (340).

Before the home router 310 is connected, the access router 320 transmits a Router Advertisement Message for informing of the existence of a new router [Router Address Router Prefix] (step 301). After that, when the new home router 310 is connected, the home router 310 receives a router advertisement message and attempts to connect to the access router 320 using DHCP. At this point, both IPv4 / IPv6 are connected using DHCP. In addition, when DHCP is used, DHCP is preferentially used. However, in the case of IPv6, a link-local address may be temporarily used [Link-local Address DAD / DHCP] (step 302). Here, the link-local address may use duplicate address detection (DAD) to prevent the overlapping address from being used. Both DHCP-allocated or link-local addresses should be defined as temporary temporary addresses that are used only for 3-5 minutes for service assignment. When assigning an address to the home router 310 as described above, the access router 320 also transmits an address of the configuration server 340 (DAD Ack./DHCP) (step 303).

Referring to FIG. 3B, the home router 310 temporarily assigned an address as described above may identify identification information of the home router 310 on the configuration server 340 via the access router 320 and the backbone router 330. That is, the ID and password of the home router 310 are transmitted [Router ID / Password] (step 304).

At this time, the home router 310 may store a private key and may be used to encrypt data. The environment setting server 340, which has received the ID and password of the home router 310, performs authentication verification by comparing a preset ID and password, and information to be set in the home router 310 when authentication verification is completed. CLI (Command Line Interface) or XML (Extensible Markup Language) [Home] which is a router supporting environment corresponding to the connected home router 310 using (IP address, routing protocol setting, QoS, user selection service setting, etc.) Router CLI (Conf./IP) / XML] is created. In addition, the environment setting server 350 uses the information for the service of the home router 310 to inform the routers 320 and 330 in the path from the backbone router 330 to the home router 310. Generate CLI or XML [Backbone Router CLI (Conf.) / XML and Access Router CLI (Conf.) / XML] (step 305). That is, the configuration server 350 is CLI or XML that is a router environment for the backbone router 330 and CLI or XML that is a router environment for the access router 320. Create [Backbone Router CLI (Conf.) / XML and Access Router CLI (Conf.) / XML]. The environment for the routers of the network according to the embodiment of the present invention may be automatically set by transferring the CLI or XML generated as described above to the routers 310, 320, and 330 of each path (step 306). As described above, in the embodiment of the present invention, when the Internet service provider (ISP) is contracted in advance with the Plug & Play function, the router can be automatically set.

4A and 4B are diagrams illustrating a process of automatically changing an environment of a router of a network according to an embodiment of the present invention.

4A and 4B, in a network environment for automatically changing the environment of a router according to an exemplary embodiment of the present invention, a first ISP network to which the service client 461 belongs and a first server to which the service server 462 belongs are included. 2 ISP networks, the first ISP network and the second ISP network is connected through the Internet 450, if the need to change the configuration of the router can automatically change the router environment as follows: .

Referring to FIG. 4A, a service client 461 existing in a first ISP network requests a predetermined service from a service server 462 existing in a second ISP network (step 401). Subsequently, when the service server 462 accepts the request, the service server 462 connects to the second ISP network via the home router 412 and the access router 422 and the backbone router 432 of the second ISP network. A service environment edit request message (Configuration Edit Request for Service) requesting a change of the service environment is transmitted to the located second environment setting server 442 (step 402). In this case, the service environment edit request message includes a service server ID / password, a service client ID / password, a corresponding IP, a network environment, and a service model.

Upon receiving the service environment edit request message, the second environment setting server 442 performs an authentication operation using the ID and password of the service server 462, and when the approval is completed, sets the environment setting for the service. Sends configuration information such as ID / password, requested service, IP address, routing protocol configuration, QoS, user selection service configuration information, etc. of the service client 461 to the first configuration server 441 located in the ISP network. (Step 403). Subsequently, the first configuration server 441 performs authentication using the ID / password of the service client 461.

Referring to FIG. 4B, when the first configuration server 461 completes the authentication operation using the ID / password of the service client 461, the backbone router 431 and the access router 421 to which the first configuration server 461 belongs, and The home router 411 belonging to the path of the corresponding service client 461 by the environment setting information (IP address, routing protocol setting, QoS, user selection service setting) transmitted to the home router 411 through the step 403. And generate a CLI or XML corresponding to the access router 421 and the backbone router 431. The router transmits the generated routes to the routers 411, 421, and 431 in step 404.

In a similar manner, when the authentication operation is completed using the ID / password of the service server 462, the second environment setting server 442 of the second ISP network transmits the service environment edit request message in step 402. Using the received information (IP address, routing protocol setting, QoS, user selection service setting), the backbone router 432 in the network path to which the service server 462 belongs, the access router 422 and the home router Generate a CLI or XML corresponding to 412. The CLI or XML generated as described above is transmitted to the routers 412, 422, and 432 of each path (step 405). Thus, in the embodiment of the present invention, it is possible to automatically change the router environment of the entire network.

Figure 5 shows a database of routers stored in the configuration server according to an embodiment of the present invention.

Referring to FIG. 5, the database may be divided into a fixed portion 501 and a variable portion 502. The fixed part 501 includes a router company / model, a router netmask, a routing protocol, an interface information (MAC Addr.), And a QoS. And Available Services and the like.

The variable portion 502 includes an ID, a password, an encryption flag, a private key, an IP version, an IP address, and an XML flag ( XML Flag) and Packet Length. Where 'ID' and 'password' are the ID and password of the router. The 'password flag' is a flag for security, and when the flag is set, all data may be encrypted and transmitted by a private key. The 'IP version' is a version of the IP, and may be configured to have a length of 4 bits. If the version bit is 0100, IPv4 may be represented. If the version bit is 0110, IPv6 may be configured. 'IP Address' represents the IP address of the router. By using 128 bits, it can be set to use both IPv4 / IPv6. The 'XML Flag' can be used to select the XML and CLI corresponding to the router environment. In other words, if the XML flag is set, it is transmitted as XML when the environment is transmitted to the corresponding router. If not set, the CLI can be generated and sent as environment variables belonging to the type of the corresponding router. 'Packet length' represents the length of the variable portion 502.

The method for automatically setting / changing a router environment of a network according to the present invention may be implemented as computer readable codes on a computer readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and also include those implemented in the form of carrier waves such as transmission over the Internet. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims below, but also by those equivalent to the claims.

According to the present invention as described above, there is an advantage that the Internet service provider (ISP) can directly manage and do not need to set up the router by the user or the administrator.

In addition, according to the present invention, when the QoS or other services are changed, it is possible to automatically change the configuration of all equipments between the user and the service provider, and thus there is an advantage that the efficiency of network services such as QoS can be maximized.

In addition, according to the present invention, there is an advantage that can minimize the damage from security problems attacking a specific port, such as Internet Worm (Internet Worm).

In addition, according to the present invention, since the ISP manages all the routers can be actively used for user billing and efficient management of the entire network is possible.

In addition, according to the present invention, both IPv4 / IPv6 can be utilized, and since both CLI and XML can be used, it is applicable to routers that do not support XML and all routers that support XML.

Claims (10)

A home router being assigned a temporary address from an access router and accessing the access router using the temporary address; The access router forwarding an address of a configuration server for configuring a router environment; Transmitting, by the home router, identification information of the home router to the environment setting server via the access router and a backbone router located above the access router; Generating and transmitting a router environment for the home router using the identification information and information predetermined for the home router; and And generating and forwarding a router environment for the access router and the backbone router using information predetermined for the home router. The method of claim 1, wherein the temporary address is obtained using DHCP or a link-local address. 3. The method of claim 2, wherein the link-local address uses DAD to prevent the use of overlapping addresses. The method of claim 1, wherein the router environment is generated as CLI or XML. The method of claim 1, wherein the CLI or XML is encrypted using a private key. The method of claim 1, wherein the configuration server has a database for a router, the database, A method for automatically setting a router environment in a network, comprising information about a router ID and password, a password flag, an IP version, an IP address, a router environment, and a packet length. Requesting, by a service client of a first ISP network, a predetermined service from a service server of a second ISP network; The service server transmitting a service environment editing request message for requesting a service environment change to a second environment setting server of the second ISP network; The second configuration server performs an authentication operation using the identification information of the service server, and then, after setting the environment corresponding to the predetermined service, the second configuration server to the first configuration server of the first ISP network of the service client. Transmitting the ID and password and the requested service; After the first configuration server performs authentication using the identification information of the service client, the router environment corresponding to the home router, the access router and the backbone router of the first ISP network corresponding to the path of the service client. Generating and delivering; and After the second configuration server performs authentication using the identification information of the service server, the router environment corresponding to the home router, the access router and the backbone router of the second ISP network corresponding to the path of the service server. Automatically changing the router environment of the network comprising the step of generating and forwarding. 8. The method of claim 7, wherein the router environment is generated as CLI or XML. The method of claim 8, wherein the CLI or XML is encrypted using a private key. The method of claim 7, wherein the first configuration server or the second configuration server has a database for the router, the database, A method for automatically changing the router environment of a network, comprising information about a router ID and password, a password flag, an IP version, an IP address, a router environment, and a packet length.

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