RU2602971C2 - Dynamic ipv6 configuration method for home gateway - Google Patents

Abstract

FIELD: communication.

SUBSTANCE: present invention relates to network communication technologies. Method comprises steps of establishing a WAN connection with an Internet attribute routing mode and determining an IPv6 configuration manner of a home gateway using a Point-to-Point Protocol over Ethernet, Ethernet Point to Point Protocol (PPPoE) dialing manner according to dynamic combination of PPPoE dialing options "obtaining an address" and "obtaining a prefix"; and starting up a dialing process, establishing an interface of dialing process, dialing process invoking an executable script ipv6-up, starting up gateway in Dynamic Host Configuration Protocol IPv6 DHCPv6 client, generating various actions for configuring and combining a stateful auto-configuration with a stateless auto-configuration, and achieving dynamic IPv6 configuration of home gateway.

EFFECT: technical result consists in faster data transmission in network.

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Description

BACKGROUND OF THE INVENTION

Field of Invention

The present invention relates to the field of home gateway technology and, in particular, relates to a method for dynamically configuring IPv6 (Internet Protocol Version 6) for a home gateway.

State of the art

Home gateways are multi-purpose, integrated access devices targeted at households and users in the form of small enterprises. By connecting the home gateway to the external network, a home-oriented service delivery platform is formed. The main function is the implementation of the transformation of an intelligent broadband access network into an informative home network. Currently, the pool of IPv4 addresses on the global Internet is exhausted, and researching a home gateway that supports IPv6 is becoming mandatory.

There are three ways to configure IPv6 for your home gateway.

First: through static configuration, manually configured information such as the IPv6 address of the gateway, route gateway and IPv6 domain name server (DNS: domain naming system).

Second: by configuring DHCPv6 (DHCP for IPv6, the protocol for dynamically configuring the host machine for IPv6, designed to work with IPv6) (the protocol for dynamically configuring the host machine); see "RFC 3315: Dynamic Host Configuration Protocol for IPv6" for more information.

Third: by configuring IPv6 PPPoE (point-to-point connection protocol for Ethernet), the configuration of addresses at the two ends of PPP (point-to-point connection protocol) of the PPPoE data transfer channel according to IPv4 differs from configuring PPPoE- addresses server according to IPv6. The addresses at the two ends of the PPP data channel according to IPv4 are configured mainly by the IPCP (IP control protocol) of the PPP session stage. Addresses at the two ends of the IPv6 PPP data link are negotiated using IPv6CP (IPv6 management protocol). According to RFC 2472: IP Version 6 over PPP, IPv6CP negotiates a 64-bit interface identifier (interface identifier) at the stage of negotiating the data channel and generates a local data channel address different from the global individual address in the ppp network interface. Therefore, only through additional, special processing can a user connect a home gateway to an external network. A home gateway is a hub for connecting an operator’s network to a user's home network. How a home gateway user can communicate using an IPv6 network through a home gateway is an urgent task in this area.

SUMMARY OF THE INVENTION

An object of the present invention is to provide an improved method for actively and dynamically configuring IPV6 for an advanced home gateway. In the case of the IPv6 PPPoE code call method for the home gateway, by selecting the “get address” option, the home gateway can obtain the global individual IPv6 address of the network interface on the WAN side and, in addition, can access the resources using the IPv6 network; and with the simultaneous selection of the "get address" and "get prefix" options, the terminal user of the home gateway can get a global individual IPv6 address and, in addition, can access resources using an IPv6 network.

The above goal is achieved by the method of dynamically configuring IPv6 for a home gateway provided by the present invention, which includes the following steps: A - establishing a global network connection in Internet attribute routing mode and determining a method for configuring IPv6 for a home gateway using a code call using the point connection protocol -point ”for Ethernet networks (PPPoE) and according to the dynamic combination of the PPPoE code call options“ get address ”and“ get prefix ”; and B - start the code call process, create an interface for the code call process, activate the ipv6-up script via the code call process, start the DHCPv6 client of the host machine dynamic configuration protocol for IPv6 in the gateway, generate various configuration actions and Combining autoconfiguration with state memorization and autoconfiguration without state memorization to dynamically configure IPv6 for the home gateway.

In the aforementioned technical solution, the dynamic combination of the PPPoE code call options "get address" and "get prefix" and their flags in step A includes the following four situations:

(1) neither "get address" nor "get prefix" are selected, and the flag value is 00; (2) only “get the prefix” is selected, and the flag value is 01;

(3) only "get address" is selected, and the flag value is 10; and

(4) both “get address” and “get prefix” are selected, and the flag value is 11.

In the above technical solution, if the flag value is 00, the DHCPv6 client requests the DHCPv6 service without storing the state, so that the home gateway receives the domain name server address from the DHCPv6 server on the WAN side; and the DHCPv6 client starts the DHCPv6 server side in the gateway to update the domain name server address configuration information.

In the aforementioned technical solution, if the flag value is 01, the DHCPv6 client initiates an identity association request for delegation of prefixes (IA_PD), starts the router notification daemon, so that the PC on the LAN side of the home gateway receives a global unique IPv6 address by auto-configuration without storing the state; and starts the DHCPv6 server side, so that the PC on the LAN side of the home gateway receives information about the address of the domain name server using the DHCPv6 service without storing the state in the auto configuration with storing the state.

In the aforementioned technical solution, if the flag value is 10, the DHCPv6 client initiates an identity association request for permanent addresses (IA_NA), so that the WAN side of the home gateway obtains information about the global individual IPv6 address and the domain name server address by auto-configuration with state storage; and launches the DHCPv6 server side in the gateway to update the domain name server address configuration information.

In the aforementioned technical solution, if the flag value is 11, the DHCPv6 client simultaneously initiates the IA_NA request and the IA_PD request, so that the WAN side of the home gateway obtains the global unique IPv6 address and the domain name server address by stateful autoconfiguration; starts the router notification daemon, so that the PC on the LAN side of the home gateway receives a global unique IPv6 address by auto-configuration without storing the state; and starts the DHCPv6 server side in the gateway, so that the PC on the LAN side of the home gateway receives information about the address of the domain name server using the DHCPv6 service without storing the state in auto configuration with storing the state.

In the aforementioned technical solution, stateful autoconfiguration is that the corresponding home gateway network interface obtains the global individual IPv6 address from the DHCPv6 server address pool on the WAN side and receives the domain name server address from the DHCPv6 server on the WAN side.

In the aforementioned technical solution, the use of the stateless DHCPv6 service in the stateful state auto configuration is that the DHCPv6 server does not allocate the IPv6 address, but only provides information about the address of the domain name server to the client.

In the above technical solution, the autoconfiguration process without storing the state is that the network interface obtains a global unique address by combining the global address prefix reported by routing and the interface identifier.

Compared with the prior art, the advantages of the present invention are as follows:

(1) through the IPv6 PPPoE code call method for the home gateway adapted in the present invention, by selecting the “get address” option, the home gateway can receive the global individual IPv6 address of the network interface on the WAN side and, in addition, can access IPv6 network resources

(2) by simultaneously selecting the "get address" and "get prefix" options, the terminal user of the home gateway can receive a global individual IPv6 address and, in addition, can access resources using an IPv6 network.

BRIEF DESCRIPTION OF GRAPHIC MATERIALS

FIG. 1 is a structural block diagram of a home gateway according to an embodiment of the present invention; and

FIG. 2 is a flowchart of a method according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

The present invention is described in detail below with reference to the accompanying drawings and embodiments.

As shown in FIG. 1, the home gateway is connected to the TOL (optical line terminal). The port for connecting slow devices to the high-speed TOL trunk is connected to a code call server that supports IPv6, a host configuration server, and a domain name server. Additionally, a WEB server that supports IPv6 is required.

A WAN (Wide Area Network) connection in Internet attribute routing mode is established at the gateway. A WAN connection can forward data on the LAN side (local area network) and data on the WAN side to exchange data between the LAN side and the WAN side. It is selected that the configuration reception is a PPPoE code call reception. This configuration technique includes two options, “get address” and “get prefix,” respectively. The IPV6 configuration of the home gateway is determined by dynamically combining the two options. There are four situations when combining two options. Each combination adapts a different dynamic IPv6 configuration technique. IPv6 is dynamically configured for the home gateway by combining autoconfiguration with state memorization and autoconfiguration without state memorization according to various IPv6 configuration methods for the home gateway.

As shown in FIG. 2, the process for dynamically configuring IPv6 for the home gateway is as follows:

Step S1: starting the pppd PPPoE code call process in the home gateway and creating an interface for the code call process;

Step S2: pppd of the code call process activates the ipv6-up executable script;

Step S3: the ipv6-up executable script determines whether the WAN connection transfers the Internet attribute and, if so, proceeds to step S4; otherwise, exits;

Step S4: The ipv6-up executable script determines the currently selected configuration method.

Four situations of combining the two options "get address" and "get prefix", respectively, are as follows:

if receiving address and receiving prefix is not selected, the flag is determined to be 00;

if receiving address is not selected, and prefix receiving is selected, the flag value is determined equal to 01; if receiving address is selected and prefix receiving is not selected, the flag value is determined equal to 10; and

if receiving address is selected and prefix receiving is selected, the flag value is determined to be 11.

The difference between the four configurations is the difference in request options sent during the DHCPv6 client process. The DHCPv6 client requests a permanent address using the IA_NA option (Identity Associations for Permanent Addresses), requests a temporary address using the IA_TA (Identity Associations for Temporary Addresses) option, and makes a request to distribute the address prefix using the IA_PD (Identity Association for Delegation of Prefixes) option.

The following describes four configuration steps in detail.

i. If the flag value is 00, step S5a and step S6b shown in FIG. 2.

Step S5a: The DHCPv6 client requests the DHCPv6 service without storing the state, that is, the dynamic configuration server of the host machine does not allocate an IPv6 address, but only provides information about the configuration of the address of the domain name server.

Step S6b: Starting the DHCPv6 server side in the gateway to update the configuration information of the domain name server address.

ii. If the flag value is 01, the home gateway requests a prefix, and step S5b, step S6a, and step S6b shown in FIG. 2.

Step S5b: The DHCPv6 client initiates the IA_PD request, and the prefix is obtained through the host configuration server on the WAN side, if the prefix defined by the home gateway is less than or equal to 64 bits and, by default, the required number of bits is 0, added after received address prefix for completing 64 bits.

Step S6a: The DHCPv6 client starts radvd (router alert daemon); The DHCPv6 client updates the received prefix for the radvd process configuration file; the radvd process sends the prefix, via the RA packet (router alert), to the device on the LAN side of the home gateway; and at this time, the home gateway acts as a router, and it is necessary to update the radvd configuration in the home gateway so that it supports the address configuration in the autoconfiguration reception without storing the state, and the PC on the LAN side receives the global individual IPv6 address by autoconfiguration without storing the state.

Step S6b: starting the DHCPv6 server side in the gateway to update the domain name server address configuration information; and the PC on the LAN side of the home gateway receives information about the address of the domain name server in the reception using the DHCPv6 service without storing the state.

iii. If the flag value is 10, the home gateway requests an address, and step S5c and step S6b shown in FIG. 2.

Step S5c: the ipv6-up executable script starts the DHCPv6 client; in this case there is no need to start radvd; The DHCPv6 client requests IA_NA reception, so that the WAN side of the home gateway obtains information about the global individual IPv6 address and the address of the domain name server by auto-configuration with state storage, where the address on the WAN side of the home gateway is the address from the IPv6 address pool of the host dynamic configuration server .

Step S6b: Launching the DHCPv6 server side in the gateway to update the domain name server address configuration information.

iii. If the flag value is 11, the home gateway simultaneously requests the address and prefix, and step S5d, step S6a, and step S6b shown in FIG. 2.

Step S5d: the ipv6-up executable script starts the DHCPv6 client; The DHCPv6 client simultaneously requests IA_NA reception and IA_PD reception, so that the WAN side of the home gateway obtains information about the global individual IPv6 address and the address of the domain name server by auto-configuration with state storage, where the address on the WAN side of the home gateway is the address from the global individual address configured in Dynamic Host Configuration Server IPv6 address pool.

Step S6a: The DHCPv6 client starts radvd; The DHCPv6 client updates the received prefix for the radvd process configuration file; the radvd process sends the prefix, via the RA packet, to the device on the LAN side of the home gateway; and at this time, the home gateway acts as a router, and it is necessary to update the radvd configuration in the home gateway, so that it supports the address configuration in the reception using autoconfiguration without storing the state and the PC on the LAN side receives the global individual IPv6 address by autoconfiguration without storing the state.

Step S6b: starting the DHCPv6 server side in the gateway to update the domain name server address configuration information; and the PC on the LAN side of the home gateway receives information about the address of the domain name server in the reception using the DHCPv6 service without storing the state in autoconfiguration with storing the state.

Specific operations and effects of embodiments of the present invention are described below.

Start the IPv6 code call server and the host host dynamic configuration server. The host machine dynamic configuration server interface is pprx. The router device must support address configuration using autoconfiguration without storing the state. The terminal needs to receive other configuration information besides the address using DHCPv6 without storing the state. Among other things, the domain name server address also refers to configuration information. The IPv6 PPPoE code call connection in Internet routing mode is established in the home gateway.

(1) The IPv6 PPPoE code gateway connection configuration information for the home gateway is set as follows: the address is not selected, the prefix is not selected, and the device reboots. Observation shows that the effects are as follows.

After the home gateway starts the pppd process and the PPPX interface is successfully created, the ipv6-up script is launched. The ipv6-up script starts the DHCPv6 client home gateway process. The home gateway installs two network interfaces, namely the pprr network interface and the DHCPv6 network interface. Information about the address of the domain name server was received in a reception using the DHCPv6 service without storing the state.

(2) The IPv6 PPPoE code gateway connection configuration information for the home gateway is set as follows: the address is not selected, the prefix is selected, and the device reboots. Observation shows that the effects are as follows.

After the home gateway starts the pppd process and the PPPX interface is successfully created, the ipv6-up script is launched. The ipv6-up script starts the DHCPv6 client home gateway process. After receiving the prefix information, the DHCPv6 client process starts the radvd of the router run process for the home gateway. See FIG. 2 for a detailed process. The DHCPv6 client process initiates an IA_PD request to obtain prefix information from the server side and updates it for the radvd configuration file. The radvd process sends prefix information via the RA packet, a PC on the LAN side. A PC on the LAN side obtains a global individual IPv6 address through autoconfiguration without storing the state and receives information about the address of the domain name server in the reception using the DHCPv6 service without storing the state.

(3) The IPv6 PPPoE code call configuration information for the home gateway is set as follows: the address is selected, the prefix is not selected, the device reboots, and the router device does not need to support autoconfiguration without storing the state. Observation shows that the effects are as follows.

After the home gateway starts the pppd process and the PPPX interface is successfully created, the ipv6-up script is launched. The ipv6-up script starts the DHCPv6 client process. The DHCPv6 client process initiates an IA_NA request to obtain information about the global individual IPv6 address and the domain name server address from the address pool of the host dynamic configuration server. At this time, the home gateway can connect to the external network via PING.

(4) The IPv6 PPPoE code gateway connection configuration information for the home gateway is set as follows: the address is received, the prefix is selected, and the gateway device reboots. Observation shows that the effects are as follows.

After the home gateway starts the pppd process and the PPPX interface is successfully created, the ipv6-up script is launched. The ipv6-up script starts the DHCPv6 client process. The DHCPv6 client process initiates requests, including the IA_NA and IA_PD options. The home gateway simultaneously requests the prefix and address. The home gateway obtains a global unique IPv6 address for the ppx interface on the WAN side by stateful autoconfiguration. The DHCPv6 client process updates the prefix information received from the host dynamic configuration server for the gateway radvd configuration file and initiates the radvd process in the home gateway. The radvd process sends the prefix, via the RA packet, to the PC on the LAN side of the home gateway. The PC on the LAN side receives the global individual IPv6 address by auto-configuration without storing the state and receives information about the address of the domain name server through the DHCPv6 gateway server. The gateway can connect to the external network via PING. Meanwhile, the PC on the LAN side can connect to the external network via PING.

Naturally, one skilled in the art will be able to make various modifications or changes to the present invention without departing from the spirit and scope of the present invention. Thus, the present invention is also intended to cover these modifications and changes, while such modifications and changes are within the scope of the claims and technologies equivalent to the present invention.

Content that is not described in detail in the description refers to the prior art, which is well known to a person skilled in the art.

Claims (8)

1. A method for dynamically configuring IPv6 for a home gateway, comprising the steps of:
A: establish a connection to the global network in the routing mode of Internet attributes and determine the reception of IPv6 configuration for the home gateway in reception using a code call using the point-to-point connection protocol for Ethernet networks (PPPoE) and according to the dynamic combination of the PPPoE code call options "get address" and "get prefix"; and
Q: they start the code call process, create an interface for the code call process, activate the ipv6-up script through the code call process, start the DHCPv6 client of the host machine dynamic configuration protocol for IPv6 in the gateway, generate various configuration actions and combine auto-configuration with state memorization and autoconfiguration without state memorization for dynamic configuration of IPv6 for the home gateway;
moreover, the dynamic combination of the PPPoE code call options "get address" and "get prefix" at stage A and their flags includes the following four situations:
(1) they do not select either "get address" or "get prefix", and the flag value is 00;
(2) only "get the prefix" is selected, and the flag value is 01;
(3) only select "get address", and the flag value is 10; and
(4) both "get address" and "get prefix" are selected, and the flag value is 11. 2. The method of dynamically configuring IPv6 for a home gateway according to claim 1, characterized in that when the flag value is 00, the DHCPv6 client requests the DHCPv6 service without storing the state, and the home gateway receives the configuration information for the address of the domain name server separately from the address in Reception using DHCPv6 without storing the state. 3. The method for dynamically configuring IPv6 for a home gateway according to claim 1, characterized in that, when the flag value is 01, DHCPv6 the client initiates an identity association request for delegation of prefixes (IA_PD), starts the router notification daemon, so that the PC is on the LAN side of the home the gateway receives a global individual IPv6 address by autoconfiguration without storing the state, and receives information about the address of the domain name server in the reception using the DHCPv6 service without storing the state in autoconfiguration with storing condition. 4. The method for dynamically configuring IPv6 for a home gateway according to claim 1, characterized in that when the flag value is 10, the DHCPv6 client initiates an identity association request for permanent addresses (IA_NA), so that the WAN side of the home gateway receives global individual the IPv6 address and the domain name server address by autoconfiguration with storing the state, and launches the DHCPv6 server side in the gateway to update the configuration information of the domain name server address. 5. The method for dynamically configuring IPv6 for a home gateway according to claim 1, characterized in that when the flag value is 11, the DHCPv6 client simultaneously initiates an IA_NA request and an IA_PD request, so that the WAN side of the home gateway receives information about the global individual IPv6 address and the address of the domain name server by autoconfiguration with storing state; launches the router notification daemon and starts the DHCPv6 server side in the gateway, so that the PC on the LAN side of the home gateway receives the global individual IPv6 address by auto-configuration without storing the state and receives information about the domain name server address in the reception using DHCPv6 service without storing the state in auto-configuration with state memorization. 6. The method of dynamically configuring IPv6 for a home gateway according to claim 4 or 5, characterized in that the autoconfiguration with state storage is that information about the global individual IPv6 address and the domain name server address is obtained from the DHCPv6 server address pool on the WAN side , and the IPv6 address is determined by the corresponding network interface of the home gateway. 7. A method for dynamically configuring IPv6 for a home gateway according to any one of paragraphs. 2-5, characterized in that the reception using the DHCPv6 service without storing the state in the autoconfiguration with storing the state is that the dynamic configuration server of the host machine for IPv6 does not distribute the IPv6 address, but only provides information about the address of the domain name server to the client. 8. A method for dynamically configuring IPv6 for a home gateway according to any one of paragraphs. 2-5, characterized in that the autoconfiguration process without storing the state is that the network interface receives a global individual address by combining the global address prefix obtained by routing and the interface identifier.

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