WO2017000674A1

WO2017000674A1 - 4in6 tunnel mode selection method and apparatus

Info

Publication number: WO2017000674A1
Application number: PCT/CN2016/081601
Authority: WO
Inventors: 王小琴
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-06-29
Filing date: 2016-05-10
Publication date: 2017-01-05
Also published as: CN106330651A

Abstract

Disclosed is a 4in6 tunnel mode selection method and an apparatus, the method comprising: Client Premise Equipment (CPE) transmits a dynamic host configuration protocol used for IPv6 (DHCPv6) request message to a server; the CPE receives a response message for the DHCPv6 request message from the server, the response message including an IPv6 address and a designated 4in6 configuration parameter; the CPE selects the 4in6 tunnel mode according to the response message. With the above solution, the problem in related technology that the 4in6 tunnel mode can not be deployed rapidly is solved, the configuration flow is simplified, the 4in6 deployment efficiency is enhanced, and the costs of operation and maintenance of the equipment manufacturer and operator is reduced.

Description

4in6 tunnel mode selection method and device

Technical field

The present application relates to, but is not limited to, the field of communications, and in particular, to a 4in6 tunnel mode selection method and apparatus.

Background technique

With the development of network technology, the protocol of the network layer in the TCP/IP protocol family adopted by the Internet is constantly evolving to IPv6 by IPv4. In the evolution process, according to the shortage of addresses provided by IPv4 and the vigorous development of IPv4 services, a large number of addresses are provided according to IPv6 and IPv6 services are scarce. In other words, IPv4 services are rich and lack the motivation to evolve into IPv6 services. For a long time, a large IPv4 user group still exists, so the current network environment is IPv4-IPv6-IPv4. This status quo determines that the 4in6 scenario will be an important research area in the transition to IPv6. Figure 1 shows a schematic diagram of the classic 4in6 networking scenario. At the same time, IETF (The Internet Engineering Task Force) has also produced a number of transition technologies for 4in6 scenarios, such as DS-lite (Dual-Stack Lite), lightweight 4over6 Tunnel (Lightweight 4over6), MAP-T (Mapping Address and Port-T (based on translation technology), MAP-E (Mapping Address and Port-E, packet-based encapsulation), etc.

Different operators may adopt different 4in6 tunnel modes. Different operators may adopt different 4in6 tunnel modes in different network deployment areas, and separately customize transition technologies supporting specific 4in6 tunnel modes for different operators or different regions. Customer Premise Equipment (CPE) is obviously not suitable. The CPE can generally support multiple 4in6 tunnel transition technologies. In this case, the operator also needs to select a 4in6 tunnel mode according to its own network environment through default configuration, remote configuration, or user configuration. This processing method needs to be pre-configured, and there is also a risk of error.

In view of the related art, the problem of 4in6 tunnel mode cannot be rapidly deployed, and an effective solution has not been proposed.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The present application provides a 4in6 tunnel mode selection method and apparatus to solve at least the problem that the 4in6 tunnel mode cannot be rapidly deployed in the related art.

According to an aspect of the present application, a 4in6 tunnel mode selection method is provided, including: a user terminal device CPE sends a DHCPv6 request message for DHCP (Dynamic Host Configuration Protocol) of IPv6 to a server; the CPE And receiving, by the server, a response message for the DHCPv6 request message, where the response message includes an IPv6 address and a specified 4in6 configuration parameter; and the CPE selects a 4in6 tunnel mode according to the response message.

Optionally, after the step of the CPE receiving the response message of the server for the DHCPv6 request message, the method further includes: the CPE sending a DHCPv6 acknowledgment message to the server, where the DHCPv6 acknowledgment message Set to confirm to the server the IPv6 address and the specified 4in6 configuration parameter.

Optionally, the 4in6 tunnel mode includes at least one of the following: DS-lite, Lightweight 4over6 tunnel, MAP-T, MAP-E.

According to another aspect of the present application, another 4in6 tunnel mode selection method is further provided, comprising: a server receiving a dynamic host configuration protocol DHCPv6 request message for IPv6 from a user terminal device CPE; the server sending a target to the CPE The response message of the DHCPv6 request message, where the response message includes an IPv6 address and a specified 4in6 configuration parameter; and the response message is a basis for the CPE to select a 4in6 tunnel mode.

Optionally, after the step of the server sending a response message to the CPE for the DHCPv6 request message, the method further includes: the server receiving a DHCPv6 acknowledgement message from the CPE, wherein the DHCPv6 acknowledgement The message is set to confirm the IPv6 address and the specified 4in6 configuration parameter to the server.

The application further provides a computer readable storage medium storing computer executable instructions, The above method is implemented when the computer executable instructions are executed.

According to an aspect of the present application, there is provided a 4in6 tunnel mode selection device, which is applied to a user terminal device CPE, the device comprising: a first sending module, configured to send a dynamic host configuration protocol DHCPv6 for IPv6 to a server a requesting message, configured to receive a response message of the server for the DHCPv6 request message, where the response message includes an IPv6 address and a specified 4in6 configuration parameter; and the selecting module is configured to select 4in6 according to the response message. Tunnel mode.

Optionally, the device further includes: a second sending module, configured to send a DHCPv6 acknowledgment message to the server, where the DHCPv6 acknowledgment message is set to confirm the IPv6 address and the specified 4in6 configuration to the server parameter.

According to another aspect of the present application, there is also provided another 4in6 tunnel mode selection apparatus, applied to a server, the apparatus comprising: a first receiving module configured to receive a dynamic host configuration protocol for IPv6 from a user terminal device CPE a DHCPv6 request message, the sending module, configured to send a response message to the CPE for the DHCPv6 request message, where the response message includes an IPv6 address and a specified 4in6 configuration parameter; the response message is 4in6 for the CPE. The basis of the tunnel mode.

Optionally, the apparatus further includes: a second receiving module, configured to receive a DHCPv6 acknowledgment message from the CPE, wherein the DHCPv6 acknowledgment message is set to confirm the IPv6 address and the specified 4in6 configuration to the server parameter.

Through the application, the user terminal device CPE sends a dynamic host configuration protocol DHCPv6 request message for the IPv6 to the server; the CPE receives the response message of the server for the DHCPv6 request message, where the response message includes an IPv6 address and a specified 4in6 configuration parameter; The CPE selects the 4in6 tunnel mode according to the response message. The problem that the 4in6 tunnel mode cannot be rapidly deployed in the related technologies is solved, the configuration process is simplified, the 4in6 deployment efficiency is improved, and the operation and maintenance costs of the device manufacturer and the operator are reduced.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

The drawings described herein are intended to provide a further understanding of the present application, and are intended to be a part of this application. In the drawing:

1 is a schematic diagram of networking of a network scenario to which the present application applies;

2 is a flowchart of a 4in6 tunnel mode selection method according to an embodiment of the present invention;

3 is a structural block diagram of a 4in6 tunnel mode selection apparatus according to an embodiment of the present invention;

4 is a structural block diagram (1) of a 4in6 tunnel mode selection apparatus according to an embodiment of the present invention;

FIG. 5 is a flowchart (1) of a 4in6 tunnel mode selection method according to an embodiment of the present invention; FIG.

6 is a structural block diagram (2) of a 4in6 tunnel mode selection apparatus according to an embodiment of the present invention;

7 is a structural block diagram (3) of a 4in6 tunnel mode selection apparatus according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a newly defined DHCPv6 message option according to an embodiment of the present invention; FIG.

9 is a schematic flowchart of configuring IPv6 parameters for a CPE through DHCPv6 message interaction according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a DHCP6c and 4in6 tunnel in a CPE according to an embodiment of the present invention.

Preferred embodiment of the invention

The present application will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or order.

In the embodiment of the present invention, a 4in6 tunnel mode selection method is provided. FIG. 2 is a flowchart of a 4in6 tunnel mode selection method according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps:

Step S202, the user terminal device CPE sends a dynamic host configuration protocol DHCPv6 request message for IPv6 to the server;

Step S204: The CPE receives a response message from the server for the DHCPv6 request message, where the response message includes an IPv6 address and a specified 4in6 configuration parameter.

Step S206, the CPE selects a 4in6 tunnel mode according to the response message.

Through the above steps, the CPE configures the 4in6 tunnel mode according to the IPv6 address obtained from the server and the specified 4in6 selection parameter. Different operators may require different 4in6 tunnel modes, and the same carrier is in different network deployment areas. Different 4in6 tunnel modes may also be required. The operator also needs to select a 4in6 tunnel mode according to its own network environment through default configuration, remote configuration, or user configuration. The above steps solve the problem that the 4in6 tunnel mode cannot be quickly deployed in related technologies. The problem simplifies the configuration process, improves the efficiency of 4in6 deployment, and reduces the operating and maintenance costs of equipment manufacturers and operators.

In order to ensure that the CPE receives the correct IPv6 address and specifies the 4in6 configuration parameter, in an optional embodiment, after the CPE receives the response message from the server for the DHCPv6 request message, the CPE sends a DHCPv6 acknowledgment message to the server, wherein the DHCPv6 acknowledgment message is set. To confirm the IPv6 address and the specified 4in6 configuration parameter to the server.

In an alternative embodiment, the 4in6 tunnel mode includes at least one of the following: DS-lite, Lightweight 4over6 tunnel, MAP-T, MAP-E.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, the technical solution of the present application, which is essential or contributes to the related art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM). The instructions include a number of instructions for causing a terminal device (which may be a cell phone, computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention.

Embodiments of the present invention further provide a computer readable storage medium storing computer executable instructions that are implemented when the computer executable instructions are executed.

In the embodiment, a 4in6 tunnel mode selection device is further provided, and the device is set to implement The above embodiments and optional embodiments have not been described again. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 3 is a structural block diagram of a 4in6 tunnel mode selection apparatus according to an embodiment of the present invention. The apparatus is applied to a user terminal equipment CPE. As shown in FIG. 3, the apparatus includes: a first sending module 32, configured to send to a server for sending The dynamic host configuration protocol DHCPv6 request message of the IPv6; the receiving module 34 is configured to receive the response message of the server for the DHCPv6 request message, where the response message includes an IPv6 address and a specified 4in6 configuration parameter; and the selecting module 36 is configured to The response message selects the 4in6 tunnel mode.

4 is a structural block diagram (1) of a 4in6 tunnel mode selection apparatus according to an embodiment of the present invention. As shown in FIG. 4, the apparatus further includes: a second sending module 44, configured to send a DHCPv6 acknowledgement message to the server, where The DHCPv6 acknowledgment message is set to instruct the server to confirm the IPv6 address and the specified 4in6 configuration parameter.

In the embodiment of the present invention, a 4in6 tunnel mode selection method is also provided. FIG. 5 is a flowchart (1) of a 4in6 tunnel mode selection method according to an embodiment of the present invention. As shown in FIG. 5, the process includes the following steps:

Step S502, the server receives a request message for the dynamic host configuration protocol DHCPv6 of IPv6 from the user terminal device CPE;

Step S504: The server sends a response message to the CPE for the DHCPv6 request message, where the response message includes an IPv6 address and a specified 4in6 configuration parameter, and the response message is a basis for selecting the 4in6 tunnel mode for the CPE.

Through the above steps, the CPE selects the 4in6 tunnel mode according to the IPv6 address obtained from the server and the specified 4in6 configuration parameter. Different operators may require different 4in6 tunnel modes, and the same carrier is in different network deployment areas. Different 4in6 tunnel modes may also be required. The operator also needs to select a 4in6 tunnel mode according to its own network environment through default configuration, remote configuration or user configuration. The above steps solve the problem that the related technology cannot be fast. The problem of the 4in6 tunnel mode simplifies the configuration process, improves the efficiency of 4in6 deployment, and reduces the operating and maintenance costs of equipment manufacturers and operators.

In order to ensure that the CPE receives the correct IPv6 address and specifies the 4in6 configuration parameter, in an optional embodiment, after the server sends a response message to the CPE for the DHCPv6 request message, the server receives a DHCPv6 acknowledgment message from the CPE, wherein the DHCPv6 acknowledgment message The message is set to confirm the IPv6 address and the specified 4in6 configuration parameter to the server.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be performed by a program to instruct related hardware, such as a processor, which may be stored in a computer readable storage medium, such as a read only memory, disk or optical disk. Wait. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. / instruction to achieve its corresponding function. Embodiments of the invention are not limited to any specific form of combination of hardware and software.

In the present embodiment, a 4in6 tunnel mode selection device is also provided, which is configured to implement the above-mentioned embodiments and optional embodiments, and has not been described again. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

6 is a structural block diagram (2) of a 4in6 tunnel mode selection apparatus according to an embodiment of the present invention, Applicable to the server, as shown in FIG. 6, the apparatus includes: a first receiving module 62 configured to receive a request message for the dynamic host configuration protocol DHCPv6 of IPv6 from the user terminal device CPE; and a sending module 64 configured to send to the CPE The response message of the DHCPv6 request message, where the response message includes an IPv6 address and a specified 4in6 configuration parameter; the response message is a basis for selecting the 4in6 tunnel mode for the CPE.

7 is a structural block diagram (3) of a 4in6 tunnel mode selection apparatus according to an embodiment of the present invention. As shown in FIG. 7, the apparatus further includes: a second receiving module 72 configured to receive a DHCPv6 acknowledgment message from the CPE, wherein the DHCPv6 The acknowledgment message is set to instruct the server to acknowledge the IPv6 address and the specified 4in6 configuration parameter.

It should be noted that each of the above modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.

The application also provides a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

S1. The user terminal device CPE sends a dynamic host configuration protocol DHCPv6 request message to the server.

S2. The CPE receives a response message from the server for the DHCPv6 request message, where the response message includes an IPv6 address and a specified 4in6 configuration parameter.

S3. The CPE selects a 4in6 tunnel mode according to the response message.

The application also provides a storage medium that is configured to store program code for performing the following steps:

S4. The server receives a dynamic host configuration protocol DHCPv6 request message from the user terminal device CPE.

S5: The server sends a response message to the CPE for the DHCPv6 request message, where the response message includes an IPv6 address and a specified 4in6 configuration parameter; the response message is a basis for selecting the 4in6 tunnel mode for the CPE.

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

Optionally, in one embodiment of the present application, the processor executes S1, S2, and S3 according to the stored program code in the storage medium.

Optionally, in one embodiment of the present application, the processor executes S4 and S5 according to the stored program code in the storage medium.

For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

The purpose of this alternative embodiment is to provide a method for rapidly deploying a 4 in6 tunnel mode in a CPE. The method does not need any operation, and the deployment result can meet the requirements of the operator well, and the deployment is fast, accurate, flexible, and convenient.

An alternative embodiment of the present invention provides a method for the CPE to adaptively select and select a 4in6 tunnel mode according to an external network environment, and the method mainly includes:

The CPE sends a DHCPv6 request message to the server. The DHCPv6 request message defines a new container option (OPTION_S46_CONT) and encapsulates several sub-options (including OPTION_S46_RULE, OPTION_S46_DMR, OPTION_S46_V4V6BIND, OPTION_S46_BR, etc., which can also be newly defined according to specific conditions). Figure 8;

The CPE receives a response message returned by the server, and the response message carries a specific option of one or several 4in6 tunnel configuration parameters, and determines the mode of the option to determine which mode of the 4in6 tunnel the CPE should configure.

The CPE obtains the configuration parameters of the 4in6 tunnel from the response message, completes the tunnel configuration, and performs communication.

The optional embodiment also provides a CPE device system. The DHCP6c and 4in6 tunnels of the CPE device are designed as two independent parts. The DHCP6c is responsible for all processing related to DHCPv6 messages, and the 4in6 tunnel part is only responsible for configuration of various tunnels. Communication

The DHCP6c part includes DHCPv6 packet encapsulation, DHCPv6 packet receiving and sending, DHCPv6 packet parsing, and DHCP6c state machine. Referring to Figure 10;

The various 4in6 tunnel technologies are also independently arranged in their respective modules, such as Lw4o6, MAP-E, MAP-T, etc. in FIG.

An alternative embodiment of the present invention provides a method and system for rapidly deploying a 4in6 tunnel mode according to an external network environment, which is used to simplify the 4in6 tunnel configuration process and improve the deployment efficiency of the 4in6 tunnel. The method of the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic diagram of a network scenario network to which the present application is applicable, and is applicable to an IPv4-IPv6-IPv4 network environment in which a 4in6 tunnel needs to be deployed.

The embodiment of the present invention provides a method for automatically configuring a 4in6 tunnel in a CPE adaptive network environment. The method for the CPE is delivered in the form of an option in the DHCPv6 message interaction process by newly defining the option and encapsulating the sub-options in the DHCPv6 message. The configuration parameters of the specific 4in6 tunnel mode, indicating that the CPE chooses to configure the 4in6 tunnel of this mode.

FIG. 8 is a schematic diagram of a newly defined DHCPv6 message option structure according to an embodiment of the present invention. For convenience of viewing, the new definition of the container option is called an option of the OPTION_S46_CONT type. The option option can encapsulate various sub-options. The specific format includes:

1) option-code: OPTION_S46_CONT, which will be defined by IANA;

2) Option option length: option-length, determined by the encapsulated suboption;

The sub-option: encapsulated-options of the encapsulation is used to encapsulate all the options related to the 4in6 tunnel, such as OPTION_S46_DMR, OPTION_S46_BR, OPTION_S46_RULE, OPTION_S46_PORTPARAMS, OPTION_S46_V4V6BIND, etc., and new options can be defined according to the actual situation. In particular, if you need to support DHCPv4 over DHCPv6 to obtain the configuration parameters of the Lw4o6 tunnel, you can encapsulate the DHCPv4 Message type in these suboptions.

FIG. 9 is a schematic diagram of a process of configuring an IPv6 parameter for a CPE by using a DHCPv6 message exchange according to an embodiment of the present invention. The CPE obtains a 4in6 configuration parameter by using a DHCPv6 protocol exchange message, and the DHCPv6 message carries the newly defined container of the optional embodiment. The option option - OPTION_S46_CONT, and encapsulates a number of 4in6 tunnel-related options. For the sake of simplicity, this embodiment only draws the address delivery process, and does not consider the address renewal problem.

10 is a schematic structural diagram of a DHCP6c and a 4in6 tunnel in a CPE according to an embodiment of the present invention. The main processing steps related to CPE, including:

1) Encapsulating a DHCPv6 message, constructing a DHCPv6 request message carrying the newly defined container option, and encapsulating each sub-option. In this embodiment, the external network environment may support Lw4o6, MAP-E, or MAP-T, and then encapsulate OPTION_S46_RULE, OPTION_S46_BR, OPTION_S46_DMR three sub-options. In this embodiment, only the required option is encapsulated, and other options may be encapsulated as required.

2) Sending/receiving DHCPv6 messages, the CPE and the DHCPv6 server exchange packets, and the IPv6 address and configuration parameters are delivered.

3) Parsing the DHCPv6 packet, the CPE parses the received DHCPv6 response packet, extracts the encapsulated option and its value, and analyzes which mode 4in6 tunnel the CPE chooses and saves the configuration parameters.

4) After the tunnel is configured, the CPE is configured to configure the corresponding 4in6 tunnel.

Table 1 is the basis for selecting which 4in6 tunnel mode is configured by the CPE in this embodiment. This table lists all the options involved in the three 4in6 tunnels of Lw4o6, MAP-E, and MAP-T. It corresponds to a certain tunnel. M indicates a mandatory option, O indicates an optional option, and N/A indicates that it is not applied. -E, OPTION_S46_RULE and OPTION_S46_BR are mandatory. You can choose to issue OPTION_S46_PORTPARAMS, but it is not required.

Table 1

OptionOption	MAP-EMAP-E	MAP-TMAP-T	Lw4o6Lw4o6
OPTION_S46_RULEOPTION_S46_RULE	MM	MM	N/AN/A
OPTION_S46_BROPTION_S46_BR	MM	N/AN/A	MM
OPTION_S46_PORTPARAMSOPTION_S46_PORTPARAMS	OO	OO	OO
OPTION_S46_DMROPTION_S46_DMR	N/AN/A	MM	N/AN/A
OPTION_S46_V4V6BINDOPTION_S46_V4V6BIND	N/AN/A	N/AN/A	OO

M–Mandatory;

O–Optional;

N/A-Not Applicable

The following is a detailed description of the configuration method of the present embodiment, that is, a process of allocating an IPv6 address and a configuration parameter to a CPE by using a DHCPv6 protocol message, and a process for the CPE to obtain its 4in6 tunnel configuration parameter and create a tunnel. The process includes the following steps:

Step 1: Referring to FIG. 9, the CPE broadcasts a DHCPv6-Solicit message to request the DHCPv6 server in the network to allocate an IPv6 address and other configuration parameters. The other configuration parameters may include parameters required for the creation of a 4in6 tunnel. For example, the peer IPv6 address required for creating Lw4o6, the IPv4 address assigned to lwB4, and the PSID (Port-Set Identifier), IPv6 binding prefix; the BMR (Basic Mapping Rule) required to create MAP-E. /FMR (Forwarding Mapping Rule) rule parameters, the IPv6 address of the BR; the BMR/FMR rule parameters and the DMR (Default Mapping Rule) parameters required for creating the MAP-T;

The request message encapsulates a container option (OPTION_S46_CONT) newly defined by the optional embodiment of the present invention, and encapsulates a plurality of sub-options, wherein the role of the several sub-options is to select and encapsulate each sub-option in the request message, if the response If the corresponding option in the message has a value, it is used to determine which 4in6 tunnel mode to select. If it is assumed that the existing network may support Lw4o6, MAP-E, and MAP-T tunnels, the three suboptions OPTION_S46_RULE, OPTION_S46_BR, and OPTION_S46_DMR may be encapsulated. If the two options in the response message are OPTION_S46_RULE and OPTION_S46_BR, the value of the sub-option carries the value. , we should choose the MAP-E tunnel mode; if the OPTION_S46_RULE and OPTION_S46_DMR two suboptions carry values in the response message, the MAP-T tunnel mode should be selected; if only OPTION_S46_BR has an option, we should select Lw4o6 Tunnel mode. The specific selection is based on Table 1. Of course, the extended option can be added according to other modes of the 4in6 tunnel. For example, the environment can support DS-Lite, and the sub-option64 can be extended. The specific format is shown in Figure 8.

Step 2: The DHCPv6 server sends a DHCPv6-Advertise message to the CPE according to the DHCPv6-Solicit message, and advertises the network configuration parameters such as the IPv6 address and the IPv6 address lease period allocated to the CPE.

If the network environment supports a 4in6 tunnel, the specific 4in6 configuration parameters are carried in the corresponding option. For example, if the network environment supports MAP-E, then option OPTION_S46_RULE The option OPTION_S46_BR will host a specific vlaue.

Step 3: The CPE sends a DHCPv6-Request message to the DHCPv6 server to request the server to confirm the assigned IPv6 address and other configuration parameters.

It should be noted that the option option of the request message is consistent with the option option in the DHCPv6-Solicit request message in step 1.

Step 4: After receiving the DHCPv6-Request message sent by the CPE, the DHCPv6 server returns a DHCPv6-Reply message if it is confirmed that the IPv6 address and related configuration parameters are allocated to the CPE, and the DHCPv6-Reply message encapsulates an option option for carrying IPv6 address and other configuration parameters;

Step 5: The CPE parses the received DHCPv6-Reply packet, extracts the option value of the bearer, and determines which mode 4in6 tunnel the CPE should be configured according to the option value and the parameters it carries. For the 4in6 tunnel, you can refer to Table 1. If you have two options OPTION_S46_DMR and OPTION_S46_RULE, select MAP-T mode. If you have option -OPTION_S46_BR, select Lw4o6 tunnel mode.

In summary, the CPE of the present application responds by transmitting a DHCPv6 request message encapsulating a specific option option by using the CPE provided by the present application. The response message carries a certain response message. The configuration parameter information required for a 4in6 tunnel, the CPE determines the type of 4in6 tunnel to be configured by analyzing the option of receiving the response packet. The present application solves the problem of selecting a 4in6 tunnel mode for a device. The device manufacturer no longer needs to customize different configurations for different carriers and different network regions. The operator does not need to worry about the difference in network deployment in various regions and the user to modify the tunnel configuration. The communication is abnormal, that is, the CPE's 4in6 tunnel mode will be automatically adjusted according to the external network environment. The selection and configuration of the 4in6 tunnel mode is simple and convenient through the CPE adaptive network environment. The accuracy of the 4in6 tunnel selection can be ensured without any configuration by the operator or the user. At the same time, the CPE uses the message interaction in the IPv6 address configuration parameter allocation process to complete the configuration of the 4in6 tunnel parameter, which does not increase the extra message interaction between the CPE and the server, saves bandwidth resources, and improves network resource utilization. This application simplifies the configuration process, which not only improves the efficiency of 4in6 deployment, but also reduces the operation and maintenance costs of equipment manufacturers and operators. The application is easy to implement, not only saves the operation of pre-configuration or replacement configuration, but also improves the flexibility of network deployment, and the implementation and maintenance will be simpler and more economical.

Obviously, those skilled in the art should understand that the above modules or steps of the present application can be implemented by a general computing device, which can be concentrated on a single computing device or distributed in a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the application is not limited to any particular combination of hardware and software.

The above description is only an alternative embodiment of the present invention, and is not intended to limit the present application, and various changes and modifications may be made to the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application are intended to be included within the scope of the present application.

Industrial applicability

The present application solves the problem of selecting a 4in6 tunnel mode for a device. The device manufacturer no longer needs to customize different configurations for different carriers and different network regions. The operator does not need to worry about the difference in network deployment in various regions and the user to modify the tunnel configuration. The communication is abnormal, that is, the CPE's 4in6 tunnel mode will be automatically adjusted according to the external network environment. The selection and configuration of the 4in6 tunnel mode is simple and convenient through the CPE adaptive network environment. The accuracy of the 4in6 tunnel selection can be ensured without any configuration by the operator or the user.

Claims

A 4in6 tunnel mode selection method, including:

The user terminal device CPE sends a dynamic host configuration protocol DHCPv6 request message for IPv6 to the server;

The CPE receives the response message of the server for the DHCPv6 request message, where the response message includes an IPv6 address and a specified 4in6 configuration parameter;

The CPE selects a 4in6 tunnel mode according to the response message.
The method according to claim 1, after the step of the CPE receiving the response message of the server for the DHCPv6 request message, the method further includes:

The CPE sends a DHCPv6 acknowledgment message to the server, wherein the DHCPv6 acknowledgment message is set to confirm the IPv6 address and the specified 4in6 configuration parameter to the server.
The method of claim 1 or 2, wherein the 4in6 tunnel mode comprises at least one of the following:

DS-lite, Lightweight 4over6 tunnel, MAP-T, MAP-E.
A 4in6 tunnel mode selection method, including:

The server receives a dynamic host configuration protocol DHCPv6 request message for IPv6 from the user terminal device CPE;

The server sends a response message to the CPE for the DHCPv6 request message, where the response message includes an IPv6 address and a specified 4in6 configuration parameter; the response message is a basis for the CPE to select a 4in6 tunnel mode.
The method of claim 4, after the step of the server sending a response message to the CPE for the DHCPv6 request message, the method further comprising:

The server receives a DHCPv6 acknowledgment message from the CPE, wherein the DHCPv6 acknowledgment message is set to confirm the IPv6 address and the specified 4in6 configuration parameter to the server.
The method of claim 4 or 5, wherein the 4in6 tunnel mode comprises at least one of the following:

DS-lite, Lightweight 4over6 tunnel, MAP-T, MAP-E.
A 4in6 tunnel mode selection device is applied to a user terminal device CPE, and the device includes:

a first sending module, configured to send a dynamic host configuration protocol DHCPv6 request message for IPv6 to the server;

a receiving module, configured to receive a response message of the server for the DHCPv6 request message, where the response message includes an IPv6 address and a specified 4in6 configuration parameter;

The selection module is configured to configure the 4in6 tunnel mode according to the response message.
The apparatus of claim 7 further comprising:

The second sending module is configured to send a DHCPv6 acknowledgment message to the server, wherein the DHCPv6 acknowledgment message is set to confirm the IPv6 address and the specified 4in6 configuration parameter to the server.
The apparatus of claim 7 or 8, wherein the 4in6 tunnel mode comprises at least one of:

DS-lite, Lightweight 4over6 tunnel, MAP-T, MAP-E.
A 4in6 tunnel mode selection device is applied to a server, and the device includes:

a first receiving module, configured to receive a dynamic host configuration protocol DHCPv6 request message for IPv6 from the user terminal device CPE;

a sending module, configured to send a response message to the CPE for the DHCPv6 request message, where the response message includes an IPv6 address and a specified 4in6 configuration parameter; the response message is a basis for selecting a 4in6 tunnel mode for the CPE .
The device of claim 10, the device further comprising:

The second receiving module is configured to receive a DHCPv6 acknowledgment message from the CPE, wherein the DHCPv6 acknowledgment message is set to confirm the IPv6 address and the specified 4in6 configuration parameter to the server.
The apparatus of claim 10 or 11, wherein the 4in6 tunnel mode comprises at least one of:

DS-lite, Lightweight 4over6 tunnel, MAP-T, MAP-E.