CN101753635A - Method and system of collocating IPV6 (internet protocol version 6) addresses - Google Patents

Abstract

The embodiment of the present invention discloses an IPV6 address configuration method, which includes: obtaining a routing request sent by a terminal, the routing request carrying the service type information of the terminal; according to the correspondence between the service type information and the subnet prefix relationship, assigning the subnet prefix corresponding to the service type information carried in the routing request to the terminal; sending the assigned subnet prefix to the terminal, so that the terminal can generate a subnet prefix according to the subnet prefix IPv6 address. The method for automatically configuring the IPV6 address in the embodiment of the present invention facilitates business management. The embodiment of the invention further discloses an IPV6 address configuration system.

Description

IPV6 address configuration method and system

technical field

The present invention mainly relates to the technical field of communication, and in particular, relates to an IPV6 address configuration method and system, and a terminal and router used in the IPV6 address configuration system.

Background technique

IPV6 (Internet Protocol Version 6) is a next-generation IP protocol used to replace the current version of IP protocol IPV4, and is used to solve problems such as shortage of IP address resources. IPv6 has three address types, namely 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 IPV6 address configuration methods, one is the stateful address configuration method DHCPv6 (Dynamic Host Configuration Protocol Version 6), and the other is the stateless address configuration method, which is called SLAAC (Stateless Address Auto Configuration).

The flow of the stateless address configuration method in the prior art 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 routing request it receives, and assigns the subnet The subnet 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 practical 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 address configuration, the router randomly assigns subnet prefixes to the different terminals through a public link. Since the router does not consider the problem of service management when randomly assigning subnet prefixes, the IPV6 stateless address configuration method in the prior art is not conducive to service management.

Contents 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 used in the IPV6 address configuration system.

The IPV6 address configuration method provided by the embodiment of the present invention includes: obtaining a routing request sent by a terminal, the routing request carrying the service type information of the terminal; according to the correspondence between the service type information and the subnet prefix, as follows: 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, which is used to add its service type information to the extension field of the routing request, send the routing request carrying the service type information, and assign A subnet prefix generates an IPV6 address; a router is configured to receive the routing request, obtain the service type information from the routing request, and provide the service type information according to the correspondence between the service type information and the subnet prefix for the The terminal allocates the subnet prefix corresponding to the service type information.

The router provided in the embodiment of the present invention includes a service type information parsing module, which is configured to receive a routing request from a terminal carrying service type information of the terminal, and parse the routing request to obtain the service type information; A subnet prefix allocation module, configured to assign the terminal a subnet prefix corresponding to the service type information obtained by the service type information parsing module according to the correspondence between service type information and subnet prefixes, so that all 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, which is used to generate the service type information corresponding to the terminal; a routing request sending module, which is used to attach the service type information to the extension field of the routing request , and send the routing request carrying the service type information to request the router to assign a subnet prefix to the terminal; the routing notification receiving module is used to receive the routing notification from the router, wherein the routing notification carries all The subnet prefix assigned by the router to the terminal, and the subnet prefix is the subnet corresponding to the service type information of the terminal allocated by the router according to the correspondence between the service type information and the subnet prefix prefix.

The IPV6 address configuration method and system described in the embodiments of the present invention carry the service type information of the terminal in the extension field of the routing request, and further assign a subnet to the terminal according to the correspondence between the service type information and the subnet prefix Therefore, the address prefixes assigned to terminals of the same service type conform to a certain predetermined relationship with each other, such as being aggregated with each other, so as to facilitate service statistics and data orientation; and, when performing routing updates or address prefix updates It is also easy to implement unified update for terminals of the same service type. Therefore, adopting the address configuration method and system of the present invention is convenient for business management.

Description of drawings

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

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

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

FIG. 4 is a schematic structural diagram of an alternative solution for a terminal used in an IPV6 address configuration system according to the present invention.

FIG. 5 is a schematic structural diagram of an alternative solution for a router used in an IPV6 address configuration system according to the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

When a terminal accesses an IPv6 network, address configuration is required. In the embodiments of the present invention, considering the convenience of IPV6 service management, during the process of IPV6 address configuration, the router assigns subnet prefixes to terminals according to their service types, so that the subnet prefixes assigned to terminals of the same service type conform to A certain predetermined relationship, for example, the subnet prefixes are mutually aggregated, so as to facilitate service management.

In the embodiment of the IPV6 address configuration method of the present invention, the terminal generates and sends a routing request carrying service type information, wherein the service type information can be added to the routing request through an extension field; according to the correspondence between the service type information and the subnet prefix, assign the subnet prefix corresponding to the service type information carried in the routing request to the terminal, and send the assigned subnet prefix to the A terminal; the terminal further generates an IPV6 address according to the subnet prefix assigned to it.

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 message is shown in FIG. 1 , where the type value of the route request message is 133. In the options field (Options) of the routing request message, currently only the source link address item for carrying the source link layer address of the terminal is defined in the neighbor discovery protocol. Embodiments 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 the IPV6 address configuration method of the present invention. The embodiment of described IPV6 address configuration method comprises:

Step 101, acquiring a routing request sent from a terminal, the routing request carrying service type information of the terminal;

Specifically, in step 101, the router receives a routing request sent by a terminal and carrying service type information. The routing request sent by the terminal can be transmitted to the router through a residential gateway (Residential Gateway, RG) and an access device (Access Node, AN) in sequence.

Further, before 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, and 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 type of service performed by the terminal in the network, the service type information can be generated by manual configuration 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 can select one of the multiple service types supported by the terminal provided on the terminal interface and input corresponding instruction information, and correspondingly, the terminal automatically generates the service type 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 permanently writing into a memory. Specifically, the service type of the terminal is pre-stored in the internal memory of the terminal, and after the terminal is started, the memory automatically generates service type information according to the service type stored in the terminal.

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

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

Step 102, according to the corresponding relationship between the service type information and the subnet prefix, allocate the subnet prefix corresponding to the service type information carried in the routing request to the terminal;

Step 102 is described in detail below:

Firstly, the routing request is parsed to obtain the service type information it carries. 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 in its option field. Further, the router analyzes the service type information and obtains a value of the service type information.

Secondly, according to the service type information, a selection is made among multiple pre-configured subnet prefix pools, and a corresponding subnet prefix is acquired from the selected subnet prefix pool.

An optional solution is: multiple subnet prefix pools are pre-configured inside the router, and there is a corresponding relationship between the subnet prefix pool and the value of the service type information, that is, the different subnet prefix pools in the multiple subnet prefix pools The subnet prefix pools correspond to different service types. Further, the subnet prefixes stored in the same subnet prefix pool conform to a 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 part and a characteristic part. For example, for a 64-bit subnet prefix, the first 48 bits may be used as the identification part and the last 16 bits may be used as the characteristic part. The identification parts of the subnet prefixes in the same subnet prefix pool are the same, but the characteristic parts of the subnet prefixes in the same subnet prefix pool are different, and the identification parts of the subnet prefixes in different subnet prefix pools are 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 subnet prefixes in different subnet prefix pools are different, that is, different The subnet prefixes in the subnet prefix pool can be distinguished from each other by their first 48 bits (that is, the identification part).

According to the service type information, the router selects the subnet prefix pool corresponding to the value of the service type information from the pre-configured subnet prefix pool, and further obtains the corresponding subnet prefix pool from the selected subnet prefix pool. subnet prefix. For example, if the value of the service type information is 1, select the first subnet prefix pool and obtain the subnet prefix from it; if the value of the service type information is 2, select the second subnet prefix pool and obtain it from it Subnet prefix; if the value of the service type information is 3, select a third subnet prefix pool and obtain the subnet prefix from it.

Step 103, sending the assigned 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 acquired subnet prefix to an option field corresponding to a Router Advertisement (Router Advertisement) message, and sends the Router Advertisement to the terminal. Further, the terminal parses out the subnet prefix allocated by the router from the routing advertisement, and combines the subnet prefix with local interface identifier information, so as to generate an IPV6 address.

Based on the above IPV6 address configuration method, an embodiment of the present invention also provides an IPV6 address configuration system. Referring to Figure 3, the IPV6 address configuration system mainly includes:

Terminal 501, which is used to add its service type information to the extension field of the routing request, and send the routing request carrying the service type information;

A router 502, configured to receive the routing request, obtain the service type information of the terminal 501 from the routing request, and assign the terminal 501 the service type information according to the correspondence between the service type information and the subnet prefix. The subnet prefix corresponding to the above business type information

Wherein, the router 501 further generates an IPV6 address according to the subnet prefix assigned by the router 502 .

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

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

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 a router to assign a subnet prefix to the terminal 501;

A routing notification receiving module 513, configured to receive a routing notification from a router, wherein the routing notification carries a subnet prefix assigned by the router to the terminal, and the subnet prefix is determined by the router according to the service type The subnet prefix corresponding to the service type information of the terminal allocated by the corresponding relationship between the information and the subnet prefix.

The 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 pre-store The terminal corresponds to a service type, and the service type information is generated according to the pre-stored service type after the terminal is started.

Referring to Fig. 5, an optional solution of 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 a terminal carrying service type information of the terminal, and parse the routing request to obtain the service type information;

The subnet prefix allocation module 523 is configured to assign the terminal a subnet prefix corresponding to the service type information obtained by the service type information parsing module according to the correspondence between the service type information and the subnet prefix, so that The terminal can generate an IPV6 address according to the assigned subnet prefix.

Further, the router 502 may also include:

The subnet prefix storage module 522 includes multiple subnet prefix pools storing subnet prefixes, and different subnet prefix pools correspond to different service type information. Wherein, each subnet prefix stored in the subnet prefix pool includes an identification part and a feature part, the subnet prefixes in the same subnet prefix pool have the same identification part, and the subnet prefixes in the same subnet prefix pool feature Parts are different, and the subnet prefix identifiers stored in different subnet prefix pools are different.

The router 502 may further include:

A route advertisement sending module 524, configured to attach the subnet prefix obtained by the subnet prefix assignment module 523 to the option field corresponding to the route advertisement, and send the route advertisement.

To sum up, the IPV6 address configuration method and system described in the embodiments of the present invention carry the service type information of the terminal in the extension field of the routing request, and further configure the IPV6 address configuration method and system according to the correspondence between the service type information and the subnet prefix. The subnet prefixes are assigned to the above-mentioned terminals, so the address prefixes assigned to terminals of the same service type conform to a certain predetermined relationship with each other, for example, they are aggregated with each other, so as to facilitate business statistics and data orientation; and, when performing routing updates It is also easy to implement unified update for terminals of the same service type when updating address prefixes. Therefore, adopting the address configuration method and system of the present invention is convenient for business management.

Through the above description of the implementation manners, 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 this understanding, all or part of the contribution made by the technical solution of the present invention to the background technology can be embodied in the form of software products, and the computer software products can be stored in storage media, such as ROM/RAM, magnetic disks, optical disks, etc. , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute the methods described in various embodiments or some parts of the embodiments of the present invention.

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

Claims (14)

1. an IPV6 address configuration method is characterized in that, comprising:

Obtain the route requests of being sent by terminal, described route requests carries the traffic type information of described terminal;

According to the corresponding relation between traffic type information and the subnet prefix, be the subnet prefix of the traffic type information correspondence of carrying in the described route requests of described terminal distribution;

Described terminal assigned subnet prefix sent to described terminal, so that can generate the IPV6 address according to described subnet prefix.

2. IPV6 address configuration method according to claim 1, it is characterized in that, described route requests is to generate according to Neighbor Discovery Protocol, and described traffic type information is attached to described route requests by the mode that the option field field of described Neighbor Discovery Protocol is expanded.

3. IPV6 address configuration method according to claim 1 is characterized in that, described traffic type information is that described terminal generates according to the type of service of operator's configuration in real time or according to the type of service of storing in advance after startup.

4. according to claim 1,2 or 3 described IPV6 address configuration methods, it is characterized in that, described according to the corresponding relation between traffic type information and the subnet prefix, for the step of the subnet prefix of the traffic type information correspondence of carrying in the described route requests of described terminal distribution comprises:

Resolve described route requests to obtain its entrained traffic type information;

Select in pre-configured a plurality of subnet prefixs pond according to described traffic type information, and in selected subnet prefix pond, obtaining corresponding subnet prefix, the different subnet prefix pond in wherein said a plurality of subnet prefixs pond is the different traffic type information of correspondence respectively.

5. IPV6 address configuration method according to claim 4, it is characterized in that, each subnet prefix comprises identification division and characteristic, the identification division of the subnet prefix in the same subnet prefix pond is identical, the characteristic difference of the subnet prefix in the same subnet prefix pond, and the identification division difference of the subnet prefix in the different sub-network prefix pond.

6. an IPV6 address configuration system is characterized in that, comprising:

Terminal, it is used for its traffic type information is attached to the extended field of route requests, and the described route requests that carries traffic type information is sent, and generates the IPV6 address according to the subnet prefix that is distributed by router;

Router, it is used to receive described route requests, obtains described traffic type information from described route requests, and according to the corresponding relation between traffic type information and the subnet prefix, is the subnet prefix of the described traffic type information correspondence of described terminal distribution.

7. IPV6 address configuration according to claim 7 system, it is characterized in that, described terminal comprises the traffic type information configuration module, and described traffic type information configuration module is used for generating described traffic type information according to the type of service of operator's configuration in real time or according to the type of service of storing in advance behind described starting terminal.

8. according to claim 6 or 7 described IPV6 address configuration systems, it is characterized in that described router comprises a plurality of subnet prefixs pond, and the corresponding different respectively traffic type information in different subnet prefix ponds.

9. IPV6 address configuration according to claim 8 system, it is characterized in that, each subnet prefix that described subnet prefix pond is stored comprises identification division and characteristic respectively, the identification division of the subnet prefix in the same subnet prefix pond is identical, the characteristic difference of the subnet prefix in the same subnet prefix pond, and the identification division difference of the subnet prefix in the different sub-network prefix pond.

10. a router that is used for IPV6 address configuration system is characterized in that, comprising:

The traffic type information parsing module, it is used to the route requests of the traffic type information that receives self terminal and carry described terminal, and described route requests is resolved to obtain described traffic type information;

The subnet prefix distribution module, it is used for the corresponding relation according to traffic type information and subnet prefix, the corresponding subnet prefix of traffic type information that is obtained for described terminal distribution and described traffic type information parsing module is so that described terminal can generate the IPV6 address according to assigned subnet prefix.

11. router according to claim 10 is characterized in that, also comprises:

The subnet prefix memory module, it comprises a plurality of subnet prefix ponds that store subnet prefix, and the corresponding different respectively traffic type information in different subnet prefix ponds.

12. router according to claim 11, it is characterized in that, each subnet prefix that described subnet prefix pond is stored comprises identification division and characteristic respectively, the identification division of the subnet prefix in the same subnet prefix pond is identical, the characteristic difference of the subnet prefix in the same subnet prefix pond, and the identification division difference of the subnet prefix in the different sub-network prefix pond.

13. a terminal that is used for IPV6 address configuration system is characterized in that, comprising:

The traffic type information configuration module, it is used to generate described terminal corresponding service type information;

The route requests sending module, it is used for described traffic type information is appended to the extended field of route requests, and with the described route requests that carries traffic type information send with the request router be described terminal distribution subnet prefix;

The advertising of route receiver module, it is used to receive the advertising of route from router, wherein said advertising of route carries the subnet prefix that described router is described terminal distribution, and described subnet prefix is according to that corresponding relation distributed and the corresponding subnet prefix of traffic type information described terminal between traffic type information and the subnet prefix by described router.

14. terminal according to claim 13 is characterized in that, described traffic type information configuration module generates described traffic type information according to the type of service of operator's configuration in real time or according to the type of service of storing in advance behind described starting terminal.

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