WO2013123763A1

WO2013123763A1 - Dynamic ipv6 configuration method for home gateway

Info

Publication number: WO2013123763A1
Application number: PCT/CN2012/079912
Authority: WO
Inventors: 李华敏; 王志军; 田智炜; 邬忻; 陈芳
Original assignee: 烽火通信科技股份有限公司
Priority date: 2012-02-20
Filing date: 2012-08-10
Publication date: 2013-08-29
Also published as: CN102594940A; MY174365A; RU2602971C2; CN102594940B; RU2013155979A

Abstract

Disclosed is a dynamic IPv6 configuration method for a home gateway, comprising the steps of: establishing a WAN connection with an Internet attribute routing mode, and according to the dynamic combination of PPPoE dialing options i.e. "obtaining an address" and "obtaining a prefix", determining an IPv6 configuration manner of a home gateway using a PPPoE dialing manner; and starting up a dialing process, establishing an interface of the dialing process, the dialing process invoking an executable script ipv6-up, generating a corresponding request according to the IPv6 configuration manner of the home gateway, starting up a DHCPv6 client in the gateway, and combining a stateful auto-configuration with a stateless auto-configuration, and achieving the dynamic IPv6 configuration of the home gateway. By selecting the 'obtaining an address', the home gateway can obtain the IPv6 global unicast address of a network interface at the WAN side, and access an IPv6 network. By selecting the 'obtaining an address' and the 'obtaining a prefix', home gateway users can obtain the IPv6 global unicast address, and access IPv6 network resources.

Description

Home gateway dynamic configuration IPV6 method

Technical field

The present invention relates to the field of home gateway technologies, and in particular, to a method for dynamically configuring IPV6 (Internet Protocol Version 6) in a home gateway. Background technique

The home gateway is a multi-service integrated access device for home and small business users. It is connected to the external network through the home gateway to form a home-oriented service delivery platform. The main function is to realize the conversion from the intelligent broadband access network to the informationized home network. The current global Internet IPv4 address pool has tended to dry up, and research on IPv6-enabled home gateways is imperative.

Home Gateway Configuration There are three ways to configure IPv6:

The first is to manually configure the IPv6 address of the gateway, and the routing gateway, IPv6 domain name server (DNS: Domain Name System) and other information through static configuration.

The second is configured by DHCPv6 (DHCP for Dynamic Host Configuration Protocol). For details, refer to "RFC 3315: Dynamic Host Configuration Protocol for IPv6".

The third is through the IPv6 PPPoE (Point-to-Point Protocol over Ethernet) configuration. The PPPoE server of IPv4 and IPv6 has different configurations for the addresses of the two ends of the PPP (Point-to-Point Protocol) link. The IP addresses of the two ends of the PPP link of the IPv4 are mainly through the IPCP of the PPP session. , IP Control Protocol) configuration, IPv6 PPP link address is negotiated through IPv6CP (IPv6 Control Protocol), according to "RFC 2472: IP Version 6 over PPP", IPv6CP negotiates 64-bit interface identifier in the link negotiation phase (Interface Identifier), The pppx network interface generates a local link address instead of a global unicast address. Therefore, special processing is required to enable communication between the home gateway user and the external network. The home gateway is a hub connecting the operator network and the user's home network. How the home gateway user communicates with the IPv6 network through the home gateway is a technical problem to be solved in the field. Summary of the invention

The purpose of the present invention is to overcome the deficiencies of the above background art, and provide a method for dynamically configuring IPV6 in a home gateway. The home gateway can obtain the WAN side by selecting an "acquire address" option by using a home gateway through an IPv6 PPPoE dialing method. The IPv6 global unicast address of the network interface can access IPv6 network resources. By selecting the "acquire address" and "acquire prefix" options, the home gateway terminal user can obtain the IPv6 global unicast address, and thus can access the IPv6 network resources.

The method for dynamically configuring the IPV6 of the home gateway provided by the present invention comprises the following steps: A. Establishing a WAN connection with an Internet attribute routing mode, adopting a point-to-point protocol PPPoE dialing mode on the Ethernet, and obtaining an address according to the PPPoE dialing option "Get Address" and "Get a Prefix" Dynamic combination, determine the configuration mode of the home gateway IPV6; B, start the dial-up process, create the interface of the dial-up process, the dial-up process calls the executable script ipv6-up, and starts the IPv6 dynamic host configuration protocol DHCPv6 client in the gateway, which produces different The configuration behavior, combined with stateful autoconfiguration and stateless autoconfiguration, enables the home gateway to dynamically configure IPv6.

In the above technical solution, the dynamic combination of the PPPoE dialing options "Get Address" and "Get Prefix" in the step A and the marking thereof include the following four types:

(1) "Get address" and "Get prefix" are not selected, and the flag value is 00;

(2) Select only "Get Prefix" and mark Flag as 01;

(3) Select only "Get Address" and mark Flag as 10;

(4) Select "Get Address" and "Get Prefix" at the same time, and mark Flag as 11. In the foregoing technical solution, when the Flag value is 00, the DHCPv6 client requests the stateless DHCPv6 service, and the home gateway obtains the domain name server address from the WAN side DHCPv6 server; the DHCPv6 client starts the DHCPv6 server in the gateway, and updates the domain name server. Address configuration information. .

In the foregoing technical solution, when the Flag value is 01, the DHCPv6 client initiates the prefix identification group option IA_PD request, starts the route advertisement module, and the home gateway LAN side PC acquires the IPv6 global unicast address through stateless automatic configuration; On the DHCPv6 server, the home gateway LAN side PC obtains the domain name server address information through the stateless DHCPv6 service mode in the stateful auto configuration.

In the foregoing technical solution, when the Flag value is 10, the DHCPv6 client initiates the non-temporary address identification group option IA_NA request, and the home gateway WAN side obtains the IPv6 global unicast address and the domain name server address information through the stateful automatic configuration; The DHCPv6 server updates the domain name server address configuration information.

In the foregoing technical solution, when the Flag value is 11, the DHCPv6 client simultaneously initiates an IA_NA request and an IA_PD request, and the home gateway WAN side obtains an IPv6 global unicast address and a domain name server address through stateful autoconfiguration; Module, the home gateway LAN side PC obtains the IPv6 global unicast address through the stateless automatic configuration; starts the DHCPv6 server of the gateway, and the home gateway LAN side PC obtains the domain name server address information through the stateless DHCPv6 service mode in the stateful automatic configuration.

In the foregoing technical solution, the stateful automatic configuration is: the corresponding network interface of the home gateway obtains an IPv6 global unicast address from the WAN side DHCPv6 server address pool, and obtains the domain name server address from the WAN side DHCPv6 server.

In the foregoing technical solution, the stateless DHCPv6 service mode in the stateful automatic configuration is: The DHCPv6 server does not allocate an IPv6 address, and only provides the domain to the client. In the foregoing technical solution, the process of the stateless automatic configuration is: the network interface obtains a global unicast address by using the global address prefix of the route advertisement combined with the interface identifier.

The advantages of the present invention over the prior art are as follows:

(1) The present invention adopts the method of the IPv6 PPPoE dialing by the home gateway. By selecting the "Get Address" option, the home gateway can obtain the IPv6 global unicast address of the WAN side network interface, thereby accessing the IPv6 network resource.

(2) By simultaneously checking the "Get Address" and "Get Prefix" options, the home gateway end user can obtain the IPv6 global unicast address, which in turn can access IPv6 network resources. DRAWINGS

1 is a structural block diagram of a home gateway in an embodiment of the present invention.

2 is a flow chart of a method in an embodiment of the present invention. detailed description

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

As shown in Figure 1, the home gateway is connected to the OLT (Optical Line Tterminal). The OLT is connected to an IPv6-enabled dial-up server, a dynamic host configuration server, and a domain name server. It also needs a WEB server that supports IPv6.

Establish a WAN (Wide Area Network) connection with the INTERNET (Internet) attribute routing mode in the gateway. This WAN connection can forward LAN (Local Area Network) data and WAN side data to implement LAN and WAN. The data on both sides is interconnected. The configuration mode is PPPoE dialing mode. There are two options for this configuration mode: "Get Address" and "Get Prefix". The dynamic combination of items determines how the home gateway IPV6 is configured. There are four combinations of these two options, each of which takes a different dynamic configuration of IPv6. According to different configuration modes of the home gateway IPv6, combined with stateful automatic configuration and stateless automatic configuration, the home gateway dynamically configures IPv6.

As shown in Figure 2, the process of dynamically configuring IPv6 on the home gateway is as follows:

Step S1: Start the PPPoE dialup process pppd in the home gateway, and create an interface for the dialup process.

Step S2: The dialing process pppd calls the executable script ipv6-up.

Step S3: Executable script The ipv6-up script determines whether the WAN connection has an INTERNET attribute. If yes, go to step S4, otherwise it will pop up.

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

The four combinations of the "Get Address" and "Get Prefix" options are as follows: Uncheck the get address, uncheck the get prefix, and define the flag flag value is 00; uncheck the get address, check the get prefix, The definition mark Flag value is 01;

Check the Get address, uncheck the Get prefix, and define the flag Flag value as 10;

Check the Get address, check the Get prefix, and define the flag Flag value to 11.

The difference between these four configurations is that the DHCPv6 client process has different options for making requests. The DHCPv6 client requests a non-temporary address through the IA-NA (Identity Association for Non-temporary Addresses) option, and requests the temporary address through the IA-TA (Identity Association for Temporary Addresses) option. The address prefix is requested by the IA_PD (Authentication Association for Prefix Delegation) option.

The four configuration methods are described in detail below.

(1) When the Flag value is 00, steps S5a and S6b shown in Fig. 2 are executed. Step S5a: The DHCPv6 client requests the stateless DHCPv6 service, that is, the dynamic host configuration server does not allocate an IPv6 address, and only provides the domain name server address configuration information.

Step S6b: Start the DHCPv6 server of the gateway, and update the domain name server address configuration information.

(2) When the Flag value is 01, the home gateway requests the prefix, and steps S5b, S6a, and S6b shown in Figure 2 are performed.

Step S5b: The DHCPv6 client initiates an IA_PD request, and the prefix is obtained by the WAN-side dynamic host configuration server. When the prefix assigned to the home gateway is less than or equal to 64 bits, the required number of bits is added by the obtained address prefix by default. Fill in 64 bits.

Step S6a: The radvd (Router Advertisement Daemon) is started by the DHCPv6 client, and the DHCPv6 client updates the obtained prefix to the configuration file of the radvd process, and the radvd process passes the prefix to the RA (Router Advertisement, Router Advertisement). The packet is sent to the LAN device of the home gateway. At this time, the home gateway acts as a router, and the radvd configuration in the home gateway needs to be updated to support the stateless auto configuration mode configuration address. The LAN side PC automatically configures IPv6 globally through stateless automatic configuration. Unicast address.

Step S6b: Start the DHCPv6 server of the gateway, and update the domain name server address configuration information. Home Gateway The LAN side PC obtains the domain name server address information through the stateless DHCPv6 service mode.

(3) When the Flag value is 10, the home gateway requests the address, and steps S5c and S6b shown in Figure 2 are performed.

Step S5c: The executable script ipv6-up starts the DHCPv6 client. In this case, the radvd is not required, the DHCPv6 client requests the IA_NA mode, and the WAN side of the home gateway obtains the IPv6 global unicast address and the domain name server address information through the stateful automatic configuration. The home gateway WAN side address comes from the IPv6 dynamic host configuration server address pool. Step S6b: Start the DHCPv6 server of the gateway, and update the domain name server address configuration information.

(4) When the Flag value is 11, the home gateway requests both the address and the prefix, and performs steps S5d, S6a, and S6b shown in FIG.

Step S5d: The executable script ipv6-up starts the DHCPv6 client. The DHCPv6 client requests the IA_NA and IA_PD modes. The WAN side of the home gateway can automatically obtain the IPv6 global unicast address and domain name server address information. Home Gateway The WAN side address comes from the global unicast address configured in the IPv6 Dynamic Host Configuration Server address pool.

Step S6a: The radvd is started by the DHCPv6 client, and the DHCPv6 client updates the obtained prefix to the configuration file of the radvd process. The radvd process sends the prefix to the LAN device of the home gateway through the RA message. The role of the router, and the radvd configuration in the home gateway needs to be updated to support the configuration of the stateless autoconfiguration mode. The LAN side PC obtains an IPv6 global unicast address through stateless autoconfiguration.

Step S6b: Start the DHCPv6 server of the gateway, and update the domain name server address configuration information. Home Gateway The LAN side PC obtains the domain name server address information through the stateless DHCPv6 service mode in stateful autoconfiguration.

The specific operations and phenomena of the embodiments of the present invention are as follows:

Start the IPv6 dial-up server and the dynamic host configuration server. The dynamic host configuration server startup interface is pppx. The router device needs to support the stateless auto configuration mode to configure the address. The terminal needs to use the stateless DHCPv6 to obtain other configuration information except the address. The domain name server address is One of the configuration information. Create an IPv6 PPPoE dial-up connection in the INTERNET routing mode in the home gateway.

(1) Set the home gateway IPv6 PPPoE dial-up connection configuration information, do not check the get Address, uncheck the get prefix, restart the device. The observation phenomenon is:

The home gateway starts the pppd process. After the pppx interface is successfully established, the ipv6-up script starts running. The home gateway DHCPv6 client process is started by the ipv6-up script. The home gateway establishes two network interfaces: the pppx network interface and the DHCPv6 network interface. Obtain domain name server address information through stateless DHCPv6 service

(2) Set the home gateway IPv6 PPPoE dial-up connection configuration information, uncheck the get address, check the get prefix, restart the device, and observe the phenomenon as follows:

The home gateway starts the pppd process. After the pppx interface is successfully established, the ipv6-up script starts running. The ipv6-up script starts the home gateway DHCPv6 client process. After the DHCPv6 client process obtains the prefix information, it starts the home gateway route through the process radvd. The process is shown in Figure 2. The DHCPv6 client process initiates an IA_PD request, obtains the prefix information from the server, and updates the mdvd configuration file. The radvd process sends the prefix information to the LAN side PC through the RA message. The LAN side PC automatically configures the IPv6 global order through stateless automatic configuration. Broadcast address, obtain the domain name server address information through the stateless DHCPv6 service.

(3) Set the IPv6 PPPoE dialup configuration information of the home gateway, check the Get address, uncheck the Get prefix, and restart the device. The routing device does not need to support stateless autoconfiguration. The observation phenomenon is:

The home gateway starts the pppd process. After the pppx interface is successfully established, the ipv6-up script starts running. The DHCPv6 client process is started by the ipv6-up script. The DHCPv6 client process initiates an IA_NA request and obtains IPv6 from the dynamic host configuration server address pool. Global unicast address and domain name server address information, at this time the home gateway can PING through the external network.

(4) Set the IPv6 PPPoE dial-up connection configuration information of the home gateway, check the Get address, check the Get prefix, and restart the gateway device. The observation phenomenon is: The home gateway starts the pppd process. After the pppx interface is successfully established, the ipv6-up script starts running. The DHCPv6 client process is started by the ipv6-up script. The DHCPv6 client process initiates a request containing the IA_NA and IA_PD options, and the home gateway requests the prefix and address. The home gateway obtains the IPv6 global unicast address of the pppx interface on the WAN side through stateful autoconfiguration. The DHCPv6 client process updates the prefix information obtained from the dynamic host configuration server to the gateway radvd configuration file, and starts the radvd process in the home gateway. The radvd process sends the prefix to the home gateway LAN side PC through the RA message. The LAN side PC automatically configures the IPv6 global unicast address through stateless mode, and obtains the domain name server address information through the gateway's DHCPv6 server. The gateway can PING the external network. The LAN side PC can PING the external network.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

The contents not described in detail in the present specification belong to the prior art well known to those skilled in the art.

Claims

Claim

A method for dynamically configuring IPv6 by a home gateway, which is characterized by the following steps:

A. Establish a WAN connection with Internet attribute routing mode, adopt PPPoE dial-up mode on the Ethernet, and determine the configuration mode of the home gateway IPv6 according to the dynamic combination of the PPPoE dialing options "Get Address" and "Get Prefix";

B. Start the dialup process, create the interface of the dialup process, and the dialup process invokes the executable script ipv6-up to start the IPv6 dynamic host configuration protocol DHCPv6 client in the gateway, which generates different configuration behaviors, combined with stateful autoconfiguration and stateless autoconfiguration. , Realize the home gateway to dynamically configure IPv6.

2. The method for dynamically configuring IPv6 in a home gateway according to claim 1, wherein: the dynamic combination of the PPPoE dialing options "Get Address" and "Get Prefix" in the step A and the marking thereof are as follows:

(1) "Get address" and "Get prefix" are not selected, and the flag value is 00;

(2) Select only "Get Prefix" and mark Flag as 01;

(3) Select only "Get Address" and mark Flag as 10;

(4) Select "Get Address" and "Get Prefix" at the same time, and mark Flag as 11.

3. The method for dynamically configuring IPv6 in a home gateway according to claim 2, wherein when the Flag value is 00, the DHCPv6 client requests a stateless DHCPv6 service, and the home gateway obtains a domain name other than the address through the stateless DHCPv6 mode. Server address configuration information.

The method for dynamically configuring IPv6 in a home gateway according to claim 2, wherein when the flag value is 01, the DHCPv6 client initiates a prefix identification group option IA_PD request, starts a route advertisement module, and starts a DHCPv6 server of the gateway. The home gateway LAN side PC obtains the IPv6 global unicast address through stateless autoconfiguration.

The method for dynamically configuring IPv6 in a home gateway according to claim 2, wherein: when the Flag value is 10, the DHCPv6 client initiates a non-temporary address identification group option IA_NA request, and the home gateway WAN side is configured by stateful automatic configuration. Obtain the IPv6 global unicast address and domain name server address information. Start the DHCPv6 server of the gateway and update the domain name server address configuration information.

The method for dynamically configuring IPv6 in a home gateway according to claim 2, wherein: when the Flag value is 11, the DHCPv6 client simultaneously initiates an IA_NA request and an IA_PD request, and the home gateway WAN side is configured by stateful automatic configuration. Obtain the IPv6 global unicast address and domain name server address information; start the route advertisement module, start the DHCPv6 server of the gateway, and the home gateway LAN side PC obtains the IPv6 global unicast address through stateless automatic configuration, and passes the stateless automatic configuration in the stateless state. The DHCPv6 service mode obtains the domain name server address information.

The method for dynamically configuring IPv6 in a home gateway according to claim 5 or 6, wherein: the stateful automatic configuration is: obtaining an IPv6 global unicast address and a domain name server address information from a WAN side DHCPv6 server address pool. And assign the IPv6 address to the corresponding network interface of the home gateway.

The method for dynamically configuring IPv6 of a home gateway according to any one of claims 3 to 6, wherein: the stateless DHCPv6 service mode in the stateful automatic configuration is: the IPv6 dynamic host configuration server does not allocate IPv6. Address, only provides the domain name server address information to the client.

The method for dynamically configuring IPv6 in a home gateway according to any one of claims 3 to 6, wherein: the stateless automatic configuration process is: the network interface uses a global address prefix advertised by a route to combine an interface identifier. Get a global unicast address.