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IPv6 (Internet Protocol Version 6) address allocation method and system

An allocation method and ipv6 address technology, applied in the field of communication, can solve the problems of difficult unified address allocation methods, imperfect standards, and poor interoperability in gateway scenarios, so as to realize automatic address configuration, reduce network operation and maintenance costs, and simplify configuration complexity Effect

Active Publication Date: 2012-02-01
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The steps of PPP+DHCP-PD method are complex and require two stages to complete the allocation of IPv6 addresses
[0010] In addition, due to imperfect standards and inconsistent device support, it is difficult to unify the address allocation method for the two types of gateway scenarios, and the interoperability is also relatively poor

Method used

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  • IPv6 (Internet Protocol Version 6) address allocation method and system
  • IPv6 (Internet Protocol Version 6) address allocation method and system
  • IPv6 (Internet Protocol Version 6) address allocation method and system

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Experimental program
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Embodiment Construction

[0057] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0058] The present invention starts with the frame format of the PPP protocol, modifies and supplements the protocol, and thus realizes the expansion of functions. The PPP frame includes 6 fields, see the PPP frame format in the table below.

[0059] 1

1

1

2

lengthen

2 or 4

the sign

address

control

agreement

data

FCS

[0060] The main information contained in the fields in the PPP frame is as follows:

[0061] Protocol: This field is 2 bytes long and is used to identify the protocol encapsulated in the data field. Currently, it mainly includes two protocol options, LCP and NCP. The NCP supports multiple network layer protocols, and the hexadecimal values ​​of the protocol fields corresponding to IPCP and IPv6CP can be selected as 0x8021 and 0...

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Abstract

The invention relates to an IPv6 (Internet Protocol Version 6) address allocation method, which comprises the steps of: carrying out network parameter negotiation based on an NCP (NetWare Core Protocol) option when terminal-side equipment initiates a PPP (Point-to-point Protocol) connection request to a network side; carrying out interface identification configuration option negotiation by the terminal-side equipment by sending a first configuration request message to a BRAS (Broadband Remote Access Server) during the negotiation process; and carrying out IPv6 prefix negotiation between the terminal-side equipment and the BRAS through at least a configuration request massage after completing interface ID (Identification) negotiation, and realizing automatic address configuration according to a negotiation result fed back by the BRAS and an IPv6 address generated by the interface identification which are received by the terminal-side equipment. The invention further relates to an IPv6 address allocation system. According to the embodiment of the invention, the IPv6 prefix negotiation is completed through the network parameter negotiation of the NCP option in the PPP connection, the automatic address configuration is realized, the configuration complexity is simplified, the network operation and maintenance costs are reduced, and bridging-type and routing-type home gateway scenes can be simultaneously met during the negotiation process.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and system for allocating Internet Protocol Version 6 (Internet Protocol Version 6, IPv6) addresses through a Point-to-Point Protocol (PPP protocol for short). Background technique [0002] The existing IPv6 address allocation is mainly used in two types of home gateway scenarios: one is to assign interface addresses to hosts in the bridging gateway scenario, and the other is to assign wide area network (Wide Area Network, WAN for short) to home networks in the routing gateway scenario. ) port address and LAN (Local Area Network, referred to as LAN) port prefix. [0003] In the bridging gateway scenario, when performing PPP access authentication, a personal computer (Personal Computer, referred to as PC) initiates a PPP connection request, while in the routing gateway scenario, the home gateway (Home Gateway, referred to as HGW) initiates PPP connection request. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12H04L29/08H04L29/06
Inventor 胡捷赵慧玲冯明陈运清王茜史凡聂世忠江志峰王和宇刘波高歆雅孙琼
Owner CHINA TELECOM CORP LTD
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