WO2011088703A1

WO2011088703A1 - System and method for negotiating and configuring ipv6 network parameter

Info

Publication number: WO2011088703A1
Application number: PCT/CN2010/078903
Authority: WO
Inventors: 秦超; 袁立权
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-01-19
Filing date: 2010-11-19
Publication date: 2011-07-28
Also published as: CN102130884A

Abstract

A system for negotiating and configuring internet protocol version six (IPv6) network parameters is provided in the present invention. In the system, a negotiation and configuration unit is used to negotiate and configure the IPv6 network parameters between a request end and a respond end based on the IPv6 control protocol (IPv6CP) configuration option in an IPv6CP message. A method for negotiating and configuring IPv6 network parameters is also provided in the present invention, wherein, the IPv6 network parameters are negotiated and configured between the request end and the respond end based on the IPv6CP configuration option in the IPv6CP message. Application of the present invention enables direct negotiation and configuration of IPv6 network parameters with the IPv6CP in the point-to-point protocol (PPP) family of protocols, simple implementation of the method, and cost reduction of devices, therefore the devices run more stably and robustly.

Description

System and method for negotiating and configuring IPv6 network parameters

The present invention relates to the field of network communications, and in particular, to a system and method for negotiating and configuring IPv6 network parameters in a Point-to-Point Protocol (PPP). Background technique

As a link layer protocol, PPP has been widely used in user digital link (DSL) dialing, authentication, router high-speed link encapsulation, etc. because of its simplicity, efficiency, and scalability. The network layer control protocol (NCP) in PPP enables multiple network layer protocols, such as IPv4 and IPv6, to be carried simultaneously on a PPP connection.

At the same time, the rapid development of the Internet and the rapid expansion of the scale have made the existing IPv4 face many problems in terms of scalability, such as insufficient address space, which needs to be solved urgently. As a result, people developed IPv6 to solve these problems. As the IPv4 address space is gradually depleted, some short-term solutions to delay address consumption are being implemented, and some long-term solutions such as IPv6 technology are gradually being implemented. However, there are some problems when using IPv6 to carry IPv6. For example, the negotiation configuration of IPv6 network parameters needs to be resolved.

At present, the implementation of PPP cannot directly negotiate IPv6 network parameters through the IPv6 control protocol (IPv6CP) in the PPP protocol suite. Instead, it requires additional mechanisms such as IPv6 stateless address configuration and extended option functions, and dynamic host configuration. Protocol version 6 (DHCPv6) and extended option functions are used to negotiate and configure IPv6 network parameters.

In addition to the PPP protocol family itself, the existing IPv6 network parameter negotiation configuration method needs to introduce an additional mechanism, thereby increasing the overhead of device implementation and operation and causing instability factors. In addition, this is inconsistent with the implementation method in the original IPv4 network, especially in the migration from IPv4 to IPv6. The reason for the loss of smoothness and continuity is as follows: In the IPv4 environment, all IPv4 network parameters are negotiated and configured through various configuration options of the IPv4 Control Protocol (IPCP) in the PPP protocol suite. Summary of the invention

In view of the above, the main purpose of the present invention is to provide a system and method for negotiating and configuring IPv6 network parameters, and directly using IPv6CP in the PPP protocol family to negotiate and configure IPv6 network parameters.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

A system for negotiating an IPv6 network parameter, the system includes: a negotiation configuration unit, configured to negotiate an IPv6 network parameter between the requesting end and the responding end according to the IPv6CP configuration option in the IPv6 control protocol (IPv6CP) packet.

The negotiation configuration unit further includes: a reading module of the response end, a processing module of the response end, and a sending module of the response end;

The reading module is configured to obtain a configuration request message from the requesting end, and read an IPv6CP configuration option carried in the configuration request message, where the configuration request message uses the format of the IPv6CP^

The processing module is configured to: the IPv6 network parameter corresponding to the IPv6CP configuration option is placed in a corresponding field in an IPv6CP configuration option carried in the response message, where the response message uses the IPv6CP packet Format

The sending module is configured to send the response message to the requesting end.

The negotiation configuration unit further includes: a configuration unit of the requesting end, configured to receive the response message, obtain the IPv6 network parameter from a field of an IPv6CP configuration option carried in the response message, and according to the IPv6 network The parameters perform network configuration operations.

The requesting end includes a host or a home gateway.

A method for negotiating parameters for configuring an IPv6 network, the method comprising:: based on an IPv6CP packet In the IPv6CP configuration option, the IPv6 network parameters are negotiated between the requesting end and the responding end. The negotiation configuration includes:

The response end obtains the configuration request message from the requesting end, and reads the IPv6CP configuration option carried in the configuration request message; wherein the configuration request message uses the format of the IPv6CP message;

The responding end, the IPv6 network parameter corresponding to the IPv6CP configuration option is placed in a corresponding field in the IPv6CP configuration option carried in the response message, where the response message uses the format of the IPv6CP message;

The responder sends the response message to the requesting end.

The negotiating configuration further includes: the requesting end receiving the response message, obtaining the IPv6 network parameter from a field of an IPv6CP configuration option carried in the response message, and performing network configuration according to the IPv6 network parameter operating.

The IPv6 network parameter includes: at least one of an IPv6 address, an IPv6 prefix, a primary domain name service system (DNS) address, and an alternate DNS address.

The invention is based on the IPv6CP configuration option in the IPv6CP packet, and negotiates the configuration of the IPv6 network parameter between the requesting end and the responding end.

By using the present invention, an IPv6-based configuration option is introduced, that is, the IPv6CP configuration option is carried in the IPv6CP packet, so that the IPv6 network parameter in the PPP protocol family can be directly used to negotiate the configuration of the IPv6 network parameter, and the PPP is not required to be implemented by using an additional mechanism. Not only is the implementation method simple, but also reduces the overhead of the device, making the device run more stable and robust. DRAWINGS

1 is a schematic diagram showing an example of a format of an IPv6 address configuration option of an IPv6 address according to the present invention; FIG. 2 is a schematic diagram showing an example of a format of an IPv6CP configuration option of an IPv6 prefix according to the present invention; 4 is a schematic diagram showing an example of a format of an IPv6CP configuration option being an alternate DNS address; Figure 5 is a schematic structural view of an embodiment of a system of the present invention;

FIG. 6 is a schematic diagram of a PPP configuration option negotiation process according to Embodiment 1 of the present invention; FIG. 7 is a schematic diagram of a PPP configuration option negotiation process according to Embodiment 2 of the present invention. detailed description

The basic idea of the present invention is: Based on the IPv6CP configuration option in the IPv6CP packet, the IPv6 network parameters are negotiated between the requesting end and the responding end.

The implementation of the technical solution will be further described in detail below with reference to the accompanying drawings.

A system for negotiating an IPv6 network parameter, the system includes: a negotiation configuration unit, configured to negotiate an IPv6 network parameter between the requesting end and the responding end according to the IPv6CP configuration option in the IPv6CP packet.

Here, the negotiation configuration unit further includes: a reading module of the response end, a processing module of the response end, and a sending module of the response end. The reading module is configured to obtain a configuration request message from the requesting end, and read the IPv6CP configuration option carried in the configuration request message. The configuration request message is in the format of the IPv6CP packet. The processing module is configured to: the IPv6 network parameter corresponding to the IPv6CP configuration option carried in the configuration request message is placed in a corresponding field in the IPv6CP configuration option carried in the response message; where the response message is in the format of the IPv6CP message. The sending module is used to send a response message to the requesting end.

Here, the negotiation configuration unit further includes: a configuration unit of the requesting end, configured to receive the response message, obtain an IPv6 network parameter from a field of the IPv6CP configuration option carried in the response message, and perform a network configuration operation according to the IPv6 network parameter.

Here, the request side includes a host or a home gateway.

A method for negotiating an IPv6 network parameter, the method includes: Configuring an IPv6 network parameter between the requesting end and the responding end according to the IPv6CP configuration option in the IPv6CP packet.

Here, the negotiation configuration specifically includes the following content:

1. The response end obtains the configuration request message from the requesting end, and reads the configuration request message. The IPv6CP configuration option is carried in. The configuration request message uses the format of the IPv6CP packet.

The responding end allocates the IPv6 network parameter corresponding to the IPv6CP configuration option carried in the configuration request message to the corresponding field in the IPv6CP configuration option carried in the response message. The response message uses the format of the IPv6CP packet.

3. The responder sends a response message to the requesting end.

Here, the method may further include a configuration process, that is, the requesting end receives the response message, obtains an IPv6 network parameter from a field of an IPv6CP configuration option carried in the response message, and performs a network configuration operation according to the IPv6 network parameter.

Here, the IPv6 network parameters include: at least one of an IPv6 address, an IPv6 prefix, a primary domain name service system (DNS) address, and an alternate DNS address.

In summary, the present invention is directed to the negotiation configuration problem of IPv6 network parameters in PPP, and is a technical solution for IPv6 network parameter negotiation configuration based on the IPv6CP configuration option. The main contents included in the technical solution of the present invention are explained below.

The IPv6 network parameter negotiation configuration system based on the IPv6CP configuration option includes: a reading module, a processing module, and a sending module. The reading module is configured to process the receiving of the IPv6CP packet from the peer end, and read the content of the configuration option in the packet, and then submit the processing module for further processing. The processing module is configured to place the selected IPv6 network parameter in the corresponding field of the configuration option in the response message according to the content of the received configuration option. The sending module is configured to send the response packet generated by the processing module to the peer end as a response to the received IPv6CP message.

Further, the IPv6 network parameters include, but are not limited to, an IPv6 address, an IPv6 prefix, a primary DNS address, an alternate DNS address, and the like.

If the system of the present invention is applied to the method of the present invention, the IPv6 network parameter negotiation configuration method based on the IPv6CP configuration option of the present invention includes:

The reading module receives the IPV6CP message from the peer end, and reads the content of the configuration option in the message. And then the processing module performs further processing; the processing module places the selected IPv6 network parameter in a corresponding field of the configuration option in the response message according to the content of the received configuration option; the sending module sends the response message generated by the processing module The peer is sent as a response to the received IPv6CP message.

Further, the configuration requesting end of the negotiation two parties may perform a network configuration operation according to the acquired network parameters, where the configuration operation includes: the configuration requesting end may perform its own network configuration operation according to the acquired network parameters, for example, configuring itself The configuration operation of the IPv6 address, the primary DNS address, and the alternate DNS address of the interface; the configuration requesting end may also perform network configuration operations of the connected device according to the acquired network parameters, for example, through stateless address configuration, DHCP, and the like. The mechanism delivers configuration operations such as IPv6 address, primary DNS, and alternate DNS address to hosts in the network to which it is connected.

The present invention provides a simple and robust IPv6 network parameter negotiation configuration scheme, considering that the existing IPv6 network parameter negotiation configuration method in the PPP cannot directly negotiate the configuration of the IPv6 network parameters. By using the invention, the IPv6CP configuration option is used to negotiate the configuration of the IPv6 network parameters, and no additional mechanism is needed, and the implementation method is simple, thereby reducing the overhead of the device and making the operation more stable.

The invention is illustrated by way of example below.

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. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.

FIG. 1 to FIG. 4 are schematic diagrams showing examples of formats of respective IPv6CP configuration options, wherein FIG. 2 is different from other graphs, and is special except for the fields common to the format, namely: Type field, Length field, content ( The content field also includes the reserved ( Reserved ) field; content is abbreviated as cont in the figure, and the specific format of each IPv6CP configuration option is shown in Figure 1 to Figure 4. In the IPv6CP configuration option, the IPv6 address can be represented by IPv6 Address; the IPv6 prefix can be represented by IPv6 Prefix; the primary DNS address can be used with Primary DNS Address. Indicates; the alternate DNS address can be represented by the Secondary DNS Address. It should be noted that: IPv6 Prefix can only be applied in IPv6, and is not available in Ipv4.

FIG. 5 is a schematic structural diagram of an embodiment of a system of the present invention. FIG. 6 is a schematic diagram of a PPP configuration option negotiation process according to Embodiment 1 of the present invention. FIG. 7 is a schematic diagram of a PPP configuration option negotiation process according to Embodiment 2 of the method of the present invention. As shown in Figure 6, when the PPP configuration requester is a host, the host sends a configuration request message and carries the IPv6CP configuration option. After the response process is complete, the configuration response message is sent to the host. As shown in Figure 7, when the PPP configuration requester is the home gateway, the home gateway sends a configuration request message and carries the IPv6CP configuration option. After the response process is completed, the configuration response message is sent to the home gateway.

System embodiment

As shown in FIG. 5, in this embodiment, the system includes: a reading module, a processing module, and a sending module. The reading module is configured to process the receiving of the IPv6CP message from the peer end and read the content of the configuration option in the message. The processing module is connected to the reading module, configured to generate a response message according to the content of the received configuration option, and place the selected IPv6 network parameter in a corresponding field of the configuration option in the response message. The sending module is connected to the processing module, and is configured to send the response message to the peer end.

Method embodiment 1

As shown in FIG. 6, in this embodiment, the PPP configuration option negotiation process includes the following steps: Step 101: A host sends a configuration request message.

Here, the configuration request message is implemented by using IPv6CP. The IPv6CP configuration options carried in the IPv6CP 4 are IPv6 Address, Primary DNS Address, Secondary DNS Address, and the like. In J3⁄4, the configuration options such as IPv6 Address, Primary DNS Address. Secondary DNS Address may not contain specific parameter values, and are empty. After receiving the response from the configuration response, add specific parameter values.

Step 102: The read module of the configuration response end receives the IPv6 packet from the host, and reads the IPv6. The content of the IPv6CP configuration option in the message.

Step 103: The processing module configuring the response end generates a response according to the content of the received configuration option, and places the selected IPv6 network parameter in a corresponding field of the configuration option in the response message.

Here, the network parameter values such as the selected IPv6 Address, Primary DNS Address, and Secondary DNS Address are placed in the corresponding fields of the configuration options in the response message. For the setting of the corresponding field, the configuration request message sent by the configuration requesting end carries a configuration option, and the configuration option may include a field corresponding to the network parameter such as IPv6 Address, Primary DNS Address, and Secondary DNS Address; When responding to the response of the responding end, the response message, that is, the response message also carries configuration options, and may also include fields corresponding to network parameters such as IPv6 Address, Primary DNS Address, and Secondary DNS Address, and then, the specific network parameter value is placed. The corresponding field in the configuration option needs to be placed, for example, the parameter value of the IPv6 Address network parameter is placed in the configuration option corresponding to the IPv6 Address field.

Step 104: The sending module of the responding end sends the response packet generated by the processing module to the host of the peer end as a response to the received IPv6CP packet.

Step 105: The host performs network configuration operations according to the IPv6 network parameters in the obtained response packet.

Here, the host performs specific network configuration operations according to the obtained network parameter values such as IPv6 Address, Primary DNS Address, and Secondary DNS Address.

Method embodiment 2

As shown in FIG. 7, in this embodiment, the ΡΡΡ configuration option negotiation process includes the following steps: Step 201: The home gateway sends a configuration request message.

Here, the configuration request message is implemented by using IPv6CP, and the IPv6CP configuration option carried in the IPv6CP 4 is IPv6-Prefix, Primary DNS Address, Secondary DNS Address, and the like. J3⁄4, IPv6 Address, Primary DNS Address. Secondary The contents of the configuration options such as DNS Address may not contain specific parameter values, and are empty. After receiving the response from the configuration response end, the specific parameter values are added.

Step 202: The reading module of the configuration response end receives the IPv6 packet from the home gateway, and reads the content of the IPv6CP configuration option in the IPv6 packet.

Step 203: The processing module configuring the response end generates a response message according to the content of the received configuration option, and places the selected IPv6 network parameter in a corresponding field of the configuration option in the response message.

Here, the network parameter values such as the selected IPv6-Prefix, Primary DNS Address, and Secondary DNS Address are placed in the corresponding fields of the configuration options in the response message.

Step 204: The sending module that configures the responding end sends the response packet generated by the processing module to the home gateway of the peer end as a response to the received IPv6CP packet.

Step 205: The home gateway performs operations such as network configuration according to the IPv6 network parameters in the obtained response message.

Here, the home gateway performs specific network configuration operations according to the obtained network parameter values such as IPv6-Prefix, Primary DNS Address, and Secondary DNS Address.

It should be noted that the steps shown in the flowchart of the accompanying drawings may be performed in a computer system such as a set of computer executable instructions, and, although the logical order is shown in the flowchart, in some cases, The steps shown or described may be performed in an order different than that herein.

Here, the configuration options mentioned above are represented by configuration-option; the host is represented by Host; and the home gateway is represented by Residential Gateway.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

Claim

A system for negotiating and configuring an IPv6 network parameter, the system comprising: a negotiation configuration unit, configured to negotiate between a requesting end and a responding end according to an IPv6CP configuration option in an IPv6 Control Protocol (IPv6CP) packet Configure IPv6 network parameters.

2. The system according to claim 1, wherein the negotiation configuration unit further comprises: a reading module of the response end, a processing module of the response end, and a transmitting module of the response end;

The system according to claim 2, wherein the negotiation configuration unit further comprises: a configuration unit of the requesting end, configured to receive the response message, from a field of an IPv6CP configuration option carried in the response message Obtaining the IPv6 network parameter, and performing a network configuration operation according to the IPv6 network parameter.

The system according to any one of claims 1 to 3, wherein the requesting end comprises a host or a home gateway.

A method for negotiating an IPv6 network parameter, the method comprising: configuring an IPv6 network parameter between the requesting end and the responding end according to the IPv6CP configuration option in the IPv6CP packet.

The method according to claim 5, wherein the negotiating configuration comprises: the responding end acquiring a configuration request message from the requesting end, and reading the configuration request message The IPv6CP configuration option is carried; wherein the configuration request message uses a format of the IPv6CP packet;

The responder sends the response message to the requesting end.

The method according to claim 6, wherein the negotiating configuration further comprises: the requesting end receiving the response message, acquiring the IPv6 from a field of an IPv6CP configuration option carried in the response message Network parameters, and perform network configuration operations according to the IPv6 network parameters.

The method according to any one of claims 5 to 7, wherein the IPv6 network parameter comprises: at least one of an IPv6 address, an IPv6 prefix, a primary domain name service system (DNS) address, and an alternate DNS address. One.