WO2010069181A1

WO2010069181A1 - Method and system for configuring ipv6 address

Info

Publication number: WO2010069181A1
Application number: PCT/CN2009/073630
Authority: WO
Inventors: 牛乐宏
Original assignee: 华为技术有限公司
Priority date: 2008-12-17
Filing date: 2009-08-31
Publication date: 2010-06-24
Also published as: CN101753635A

Abstract

A method for configuring IPV6 address is disclosed by the embodiments of the present invention. The method includes the following steps: obtaining router solicitation sent from a terminal, wherein the router solicitation carries service type information of the terminal; according to the corresponding relation between the service type information and subnet prefixes, allocating a subnet prefix for the terminal corresponding to the service type information carried by the router solicitation; sending the allocated subnet prefix to the terminal , so that the terminal can generate IPV6 address according to the subnet prefix. By using the method for automatically configuring IPV6 address of the embodiments of the present invention, it is convenient for service management. A system for configuring IPV6 address is also disclosed by the embodiments of the present invention.

Description

IPV6 address configuration method and system. The present application claims priority to Chinese Patent Application No. 20081024162, filed on Dec. 17, 2008, entitled "IPV6 Address Configuration Method and System", the entire contents of which are incorporated herein by reference. in. Technical field

The present invention relates to the field of communications technologies, and in particular, to an IPV6 address configuration method and system, and a terminal and router for an IPV6 address configuration system. Background technique

IPV6 (Internet Protocol Version 6) is the next generation IP protocol used to replace the current version of IP protocol IPV4, which is used to solve the problem of shortage of IP address resources. IPV6 has three address types, which are unicast address, multicast address, and anycast address. Among them, the IPV6 unicast address is divided into two parts: subnet prefix (Subnet Prefix) and interface identifier (Interface ID).

Generally speaking, there are two ways to configure IPV6 addresses. One is the configuration of stateful addresses.

DHCPv6 (Dynamic Host Configuration Protocol Version 6), the second is the stateless address configuration method, called SLAAC (Stateless Address Auto Configuration).

The process of the stateless address configuration mode is as follows: The terminal sends a routing request (Router Solicitation) to the router through the link; the router configures a subnet prefix (Subnet Prefix) for the terminal according to the received routing request, and the sub The network prefix is sent to the terminal; the terminal further generates a unicast address according to the subnet prefix and the local interface identifier information.

In actual applications, users may sign up for multiple services. Each service accesses the network through a different terminal, and the different terminals are connected to the router through a public link. In the prior art, during the address configuration process, the router randomly assigns a subnet prefix to the different terminals through a common link. Since the router does not consider the problem of service management when randomly assigning the subnet prefix, the prior art IPV6 stateless address configuration method is not conducive to business management. Summary of the invention

In view of the above problems, an embodiment of the present invention provides an IPV6 address configuration method and system, and further provides a terminal and a router for an IPV6 address configuration system.

The IPV6 address configuration method provided by the embodiment of the present invention includes: acquiring a routing request sent by a terminal, where the routing request carries service type information of the terminal; according to the correspondence between the service type information and the subnet prefix, The terminal allocates a subnet prefix corresponding to the service type information carried in the routing request, and sends the allocated subnet prefix to the terminal, so that the terminal can generate an IPV6 address according to the subnet prefix.

The IPV6 address configuration system provided by the embodiment of the present invention includes: a terminal, configured to add its service type information to an extension field of a routing request, and send the routing request carrying the service type information to the router, and according to the The subnet prefix assigned by the router generates an IPV6 address; the router is configured to receive the routing request, obtain the service type information from the routing request, and according to the correspondence between the service type information and the subnet prefix, The terminal allocates a subnet prefix corresponding to the service type information.

The router provided by the embodiment of the present invention includes a service type information parsing module, configured to receive a routing request from a terminal and carrying the service type information of the terminal, and parse the routing request to obtain the service type information; a subnet prefix allocation module, configured to allocate a subnet prefix corresponding to the service type information acquired by the service type information parsing module to the terminal according to the correspondence between the service type information and the subnet prefix, so as to enable the The terminal can generate an IPV6 address according to the assigned subnet prefix.

The terminal provided by the embodiment of the present invention includes: a service type information configuration module, configured to generate service type information corresponding to the terminal; and a route request sending module, configured to attach the service type information to an extension field of the route request Medium, and the route carrying the service type information, please And requesting a router to allocate a subnet prefix to the terminal; a route advertisement receiving module, configured to receive a route advertisement from the router, where the route advertisement carries a subnet prefix allocated by the router to the terminal, and The subnet prefix is a subnet prefix corresponding to the service type information of the terminal, which is allocated by the router according to the correspondence between the service type information and the subnet prefix.

The IPV6 address configuration method and system in the embodiment of the present invention carries the service type information of the terminal in the extension field of the routing request, and further allocates a subnet to the terminal according to the correspondence between the service type information and the subnet prefix. The prefix, so that the address prefixes assigned by the terminals of the same service type meet certain predetermined relationships, for example, are mutually aggregated, thereby facilitating service statistics and data orientation, etc.; and, when performing routing update or address prefix update It is also easy to implement unified update for terminals of the same service type. Therefore, the address configuration method and system of the present invention facilitate the management of services. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

Figure 1 is a schematic diagram of the format of a route request message defined by the neighbor discovery protocol.

2 is a flow chart of an embodiment of an IPV6 address configuration method according to the present invention.

FIG. 3 is a schematic structural diagram of an embodiment of an IPV6 address configuration system according to the present invention.

4 is a schematic structural diagram of an alternative embodiment of a terminal for an IPV6 address configuration system according to the present invention. FIG. 5 is a schematic structural diagram of an alternative scheme of a router for an IPV6 address configuration system according to the present invention. detailed description The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

When the terminal accesses the IPV6 network, address configuration is required. The embodiment of the present invention is convenient for the management of the IPV6 service. In the process of configuring the IPV6 address, the router allocates a subnet prefix according to the service type of the terminal, so that the subnet prefix assigned by the terminal of the same service type is consistent. Certain predetermined relationships, such as the subnet prefixes, are aggregated to each other, thereby facilitating management of services.

In an embodiment of the IPV6 address configuration method of the present invention, the terminal generates and sends a routing request carrying service type information, where the service type information may be attached to the routing request by means of an extension field; a routing request, the subnet prefix corresponding to the service type information carried in the routing request is allocated to the terminal according to the correspondence between the service type information and the subnet prefix, and the allocated subnet prefix is sent to the The terminal further generates an IPV6 address according to the subnet prefix to which the terminal is assigned.

Further, in the IPV6 address configuration method, the terminal may generate a routing request according to a Neighbor Discovery protocol. According to the neighbor discovery protocol, the format of the route request packet is as shown in Figure 1. The type of the route request packet is 133. In the Option field of the route request message, only the source link address entry for carrying the source link layer address of the terminal is defined in the neighbor discovery protocol. The embodiment of the present invention may further expand the option field to generate a new option (hereinafter referred to as a service type item:), and use the service type item to carry the service type information of the terminal.

Please refer to FIG. 2, which is a flow chart of a specific embodiment of an IPV6 address configuration method according to the present invention. The embodiment of the IPV6 address configuration method includes:

Step 101: Acquire a routing request sent by the terminal, where the routing request carries service type information of the terminal. Specifically, in step 101, the router receives a routing request sent by the terminal and carries the service type information. The routing request sent by the terminal may be sent to the router through a Home Gateway (RG) and an Access Node (Access Node, ANM).

Further, before the step 101, the embodiment of the IPV6 address configuration method of the present invention may further include the step of generating the routing request carrying the service type information, where the step of generating the routing request is specifically as follows:

First, the terminal generates corresponding service type information according to its service type.

For the service type that the terminal performs in the network, the service type information can be generated by manually configuring the terminal after the terminal is started, that is, the corresponding service type information is generated according to the service type set by the operator through the terminal interface in real time. For example, the operator may select one of the multiple service types supported by the terminal provided by the terminal interface and input corresponding instruction information, and correspondingly, the terminal automatically generates the service according to the service type selected by the operator. Type information.

Further, the generated service type information may also be generated by the terminal in a manner of being fixedly written to the memory. Specifically, the terminal pre-stores the service type of the terminal in its internal memory, and after the terminal is started, the memory automatically generates service type information according to the service type stored in the device.

The values of the service type information corresponding to the terminals of different service types are different. For example, the value of the service type information corresponding to the Internet service can be defined as 1; IP overcast voice (Voice over IP,

The value of the service type information corresponding to the VOIP service may be defined as 2; the value of the service type information corresponding to the IP television (IPTV) service may be defined as 3. It can be seen that by analyzing the value of the service type information, the service type of the corresponding terminal can be determined.

Second, a routing request carrying the service type information is generated. Specifically, the terminal appends the service type information generated by the terminal to the service type item extended in the option field field of the route request, and sends the route request carrying the service type information to its corresponding network link.

Step 102: Assign a subnet prefix corresponding to the service type information carried in the routing request to the terminal according to the correspondence between the service type information and the subnet prefix. The following is a detailed description of step 102:

First, the routing request is parsed to obtain the service type information carried by the routing request. Specifically, the router receives the routing request from the network link and parses the received routing request to obtain the service type information from the service type item extended by the option field. Further, the router analyzes the service type information and obtains the value of the service type information.

Then, the service type information is selected in a plurality of pre-configured subnet prefix pools, and the corresponding subnet prefix is obtained from the selected subnet prefix pool.

An optional solution is: the router is pre-configured with a plurality of subnet prefix pools, and the subnet prefix pool has a corresponding relationship with the value of the service type information, that is, different in the plurality of subnet prefix pools. The subnet prefix pools correspond to different service type information. Further, the subnet prefixes stored in the same subnet prefix pool are in a certain predetermined relationship. For example, the subnet prefixes stored in the same subnet prefix pool are mutually aggregated. Specifically, each subnet prefix may include an identification portion and a feature portion. For example, for a 64-bit subnet prefix, the first 48 bits may be used as the identification portion and the last 16 bits may be used as the feature portion. The identification part of the subnet prefix in the same subnet prefix pool is the same, and the characteristic part of the subnet prefix in the same subnet prefix pool is different, and the identification part of the subnet prefix in the different subnet prefix pool is different. It can be seen that the subnet prefixes in the same subnet prefix pool have the same first 48 bits, that is, they are mutually aggregated; and the first 48 bits of the subnet prefix in different subnet prefix pools are different, that is, different. The subnet prefix in the subnet prefix pool can be distinguished from each other by its first 48 bits (ie, the identification part:).

According to the service type information, the router selects a subnet prefix pool corresponding to the value of the service type information in the pre-configured subnet prefix pool, and obtains a corresponding one in the selected subnet prefix pool. Subnet prefix. For example, if the value of the service type information is 1, the first subnet prefix pool is selected and the subnet prefix is obtained therefrom; if the value of the service type information is 2, the second subnet prefix pool is selected and obtained from Subnet prefix; If the value of the service type information is 3, select the third subnet prefix pool and obtain the subnet prefix from it. Step 103: Send the allocated subnet prefix to the terminal, so that the terminal can generate an IPV6 address according to the subnet prefix.

An optional solution is: the router appends the obtained subnet prefix to an option field corresponding to a Router Advertisement message, and sends the route advertisement to the terminal. Further, the terminal parses the subnet prefix assigned by the router from the route advertisement, and combines the subnet prefix with the local interface identifier information, so that the IPV6 generates an address.

Based on the foregoing IPV6 address configuration method, an embodiment of the present invention further provides an IPV6 address configuration system. Referring to FIG. 3, the IPV6 address configuration system mainly includes:

The terminal 501 is configured to add its service type information to the extension field of the routing request, and send the routing request carrying the service type information to the router 502;

The router 502 is configured to receive the routing request, obtain the service type information of the terminal 501 from the routing request, and allocate the location to the terminal 501 according to the correspondence between the service type information and the subnet prefix. The subnet prefix corresponding to the service type information.

The router 501 further generates an IPV6 address according to the subnet prefix allocated by the router 502.

Further, the IPV6 address configuration system may further include a home gateway 503 and an access network convergence device 504. The home gateway 503 and the access network convergence device 504 are sequentially connected to the network link between the terminal 501 and the router 502. When the user subscribes to multiple services, each service accesses the broadband network through different terminals 501, and multiple terminals 501 of the same user are connected to the user network 505 through the home gateway 503, respectively. The home gateway 503 is further connected to the router 502 via an access network aggregation device 504.

Referring to FIG. 4, the terminal 501 of the embodiment of the IPV6 address configuration system of the present invention is an optional solution including:

a service type information configuration module 512, configured to generate corresponding service type information according to the service type of the terminal 501; a routing request sending module 511, configured to add the service type information to an extension field of the routing request, and send the routing request carrying the service type information to request the router to allocate a subnet prefix to the terminal 501;

a route advertisement receiving module 513, configured to receive a route advertisement from a router, where the route advertisement carries a subnet prefix allocated by the router to the terminal, and the subnet prefix is determined by the router according to a service type. A subnet prefix corresponding to the service type information of the terminal allocated by the correspondence between the information and the subnet prefix.

An address generation module 514 is configured to generate an IPV6 address according to the subnet prefix and the local address identifier.

Further, the service type information configuration module 512 may specifically generate the service type information according to the service type configured by the operator in real time after the terminal 501 is started; or the service type information configuration module 512 may also be pre-stored. The terminal has a service type corresponding to the service type, and generates the service type information according to the pre-stored service type after the terminal is started.

Referring to FIG. 5, the router 502 in the embodiment of the IPV6 address configuration system of the present invention includes:

a service type information parsing module 521, configured to receive a routing request from the terminal and carrying the service type information of the terminal, and parse the routing request to obtain the service type information;

a subnet prefix allocation module 522, configured to allocate, according to the correspondence between the service type information and the subnet prefix, a subnet prefix corresponding to the service type information acquired by the service type information parsing module, so that the terminal The terminal can generate an IPV6 address according to the assigned subnet prefix.

Further, the router 502 may further include:

The subnet prefix storage module 524 includes a plurality of subnet prefix pools that store subnet prefixes, and different subnet prefix pools respectively correspond to different service type information. Each subnet prefix stored in the subnet prefix pool includes an identifier part and a feature part, and a subnet in the same subnet prefix pool The identifiers of the subnet prefixes in the same subnet prefix pool are different, and the identifiers of the subnet prefixes stored in different subnet prefix pools are different.

The router 502 can further include:

The route advertisement sending module 523 is configured to attach the subnet prefix obtained by the subnet prefix allocation module 522 to an option field corresponding to the route advertisement, and issue the route advertisement.

In summary, the IPV6 address configuration method and system in the embodiment of the present invention carries the service type information of the terminal in the extension field of the routing request, and further calculates the correspondence between the service type information and the subnet prefix according to the correspondence between the service type information and the subnet prefix. The terminal allocates a subnet prefix, so that the address prefixes allocated by the terminals of the same service type meet certain predetermined relationships, for example, are mutually aggregated, thereby facilitating service statistics and data orientation, and the like, and performing routing update. Or it is easy to implement unified update for terminals of the same service type when the address prefix is updated. Therefore, the address configuration method and system of the present invention facilitate the management of services.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary hardware platform, and of course, can also be implemented entirely by hardware. Based on such understanding, all or part of the technical solution of the present invention contributing to the background art may be embodied in the form of a software product, which may be stored in a storage medium such as a ROM/RAM, a magnetic disk, an optical disk, or the like. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention or portions of the embodiments.

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or within the technical scope disclosed by the present invention. Alternatives are intended to be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

Claim

A method for configuring an IPV6 address, the method comprising:

Obtaining a routing request sent by the terminal, where the routing request carries the service type of the terminal, I, and .

Assigning, by the terminal, a subnet prefix corresponding to the service type information carried in the routing request, according to the correspondence between the service type information and the subnet prefix;

The assigned subnet prefix is sent to the terminal to enable the terminal to generate an IPV6 address based on the subnet prefix.

The IPV6 address configuration method according to claim 1, wherein the routing request is generated according to a neighbor discovery protocol, and the service type information is extended by using an option field field of the neighbor discovery protocol. Attached to the routing request.

The IPV6 address configuration method according to claim 1, wherein the service type information is generated by the terminal according to a service type configured by an operator in real time or according to a pre-stored service type.

The IPV6 address configuration method according to claim 1, 2 or 3, wherein the mapping between the service type information and the subnet prefix is performed for the terminal to be allocated in the routing request The steps of the subnet prefix corresponding to the service type information include:

Parsing the routing request to obtain service type information carried by the routing request;

And selecting, according to the service type information, a pre-configured plurality of subnet prefix pools, and obtaining a corresponding subnet prefix in the selected subnet prefix pool, where different subnet prefix pools respectively correspond to different service type information .

The IPV6 address configuration method according to claim 4, wherein the any one of the subnet prefixes includes an identification part and a feature part, wherein the identification part of the subnet prefix in the same subnet prefix pool is the same, the same The feature parts of the subnet prefix in the subnet prefix pool are different, and the identification parts of the subnet prefix in different subnet prefix pools are different.

6. An IPV6 address configuration system, the system comprising: a terminal, configured to add its service type information to an extension field of the routing request, and send the routing request carrying the service type information to the router, and generate an IPV6 address according to the subnet prefix allocated by the router;

a router, configured to receive the routing request, obtain the service type information from the routing request, and allocate, according to the correspondence between the service type information and the subnet prefix, the service type information corresponding to the terminal Subnet prefix.

The IPV6 address configuration system according to claim 6, wherein the terminal is further configured to generate the service type information according to a service type configured by an operator in real time or according to a pre-stored service type after startup.

The IPV6 address configuration system according to claim 6 or 7, wherein the router includes a plurality of subnet prefix pools, and different subnet prefix pools respectively correspond to different service types ^ I Ft.

The IPV6 address configuration system according to claim 8, wherein each subnet prefix stored in the subnet prefix pool includes an identification part and a feature part, and a subnet prefix in the same subnet prefix pool. The identification part is the same, the characteristic part of the subnet prefix in the same subnet prefix pool is different, and the identification part of the subnet prefix in the different subnet prefix pool is different.

10. A router for an IPV6 address configuration system, the router comprising:

a service type information parsing module, configured to receive a routing request from the terminal and carrying the service type information of the terminal, and parse the routing request to obtain the service type information;

a subnet prefix allocation module, configured to allocate a subnet prefix corresponding to the service type information acquired by the service type information parsing module to the terminal according to the correspondence between the service type information and the subnet prefix, so as to enable the The terminal can generate an IPV6 address according to the assigned subnet prefix.

The router according to claim 10, wherein the router further comprises: The subnet prefix storage module includes a plurality of subnet prefix pools that store subnet prefixes, and different subnet prefix pools respectively correspond to different service type information.

The router according to claim 11, wherein each subnet prefix stored in the subnet prefix pool includes an identification part and a feature part, and an identification part of a subnet prefix in the same subnet prefix pool. Similarly, the feature parts of the subnet prefix in the same subnet prefix pool are different, and the identification parts of the subnet prefix in different subnet prefix pools are different.

A terminal for an IPV6 address configuration system, the terminal includes: a service type information configuration module, configured to generate service type information corresponding to the terminal; and a route request sending module, where the terminal is used for The service type information is attached to the extension field of the routing request, and the routing request carrying the service type information is sent to request the router to allocate a subnet prefix to the terminal;

a route advertisement receiving module, configured to receive a route advertisement from a router, where the route advertisement carries a subnet prefix allocated by the router to the terminal, and the subnet prefix is determined by the router according to service type information A subnet prefix corresponding to the service type information of the terminal allocated by the correspondence between the subnet prefixes.

The terminal according to claim 13, wherein the service type information configuration module is configured to generate the service according to a service type configured by an operator in real time or according to a pre-stored service type after the terminal is started. Type information.