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Method and system for accessing Intranct IPv6 host into global IPv6 network

An ipv6 network and host technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve the problems of 6to4 routers and ISATAP routers that cannot be deployed.

Inactive Publication Date: 2007-08-29
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes 6to4 routers and ISATAP routers impossible to deploy because they both require a global IPv4 address and a direct connection to the Internet

Method used

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  • Method and system for accessing Intranct IPv6 host into global IPv6 network

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Embodiment Construction

[0046] The invention discloses a method for connecting an IPv6 host in an IPv4 Intranet to the IPv6 Internet through the cooperation of an intranet tunnel agent and a public network tunnel agent through an HTTP proxy server. The implementation of the inventive method comprises the steps:

[0047] After the IPv6 host in the intranet is started, it finds the router, that is, the intranet tunnel agent, through the neighbor discovery mechanism, and obtains the 6to4 prefix at the same time to form its own IPv6 address. This address is globally unique. Among them, the IPv6 host in the intranet has a standard 6to4 address prefix, that is, 2002:V4ADDR:: / 48, where V4ADDR is the global IPv4 address of the HTTP proxy server. This prefix is ​​included in the router advertisement message of the intranet tunnel agent and does not need to be configured by the IPv6 host. IPv6 hosts do not need to do any tunnel configuration. The intranet tunnel agent is also located in the intranet, it is ...

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Abstract

Through coordination between Intranet network tunnel proxy (INTP) and public network tunnel proxy (PNTP), the method establishes a virtual tunnel so as to connect IPv6 host in IPv4 Intranet to global IPv6 network. In the invention, INTP appears as an IPv6 router for IPv6 host in Intranet. Before being forwarded, IPv6 packet is packaged as HTTP Request message, and then, through HTTP proxy server, the HTTP Request message is sent to PNTP, which is a special 6to4 relaying router. Receiving HTTP Request message from interface connected to IPv4 network, the PNTP de-packages out IPv6 packet, and sends it out through interface connected to IPv6 network. IPv6 host behind IPv4 HTTP proxy server can be connected to global IPv6 network seamlessly by using the method. INTP and PNTP are transparent for IPv6 host in Intranet and global IPv6 network.

Description

technical field [0001] The invention relates to network tunnel technology, in particular to a method for establishing a virtual tunnel through an IPv4 HTTP proxy server to connect an IPv6 host computer in an intranet (intranet) to a global IPv6 network. Background technique [0002] Although IPv6 inherently has many advantages that IPv4 does not have, such as a large address space, address auto-configuration capabilities, good mobility support, etc., for ISPs and end users, unless there are sufficient reasons (such as based on The "killer application" of IPv6) forces them to migrate to IPv6, otherwise they will use the existing IPv4 network in large quantities. That is to say, for quite a long period of time, the coexistence of IPv4 network and IPv6 network will be maintained on the Internet (Internet). Therefore, how to ensure the interoperability of these two networks will be a long-term issue. Among the currently used transition mechanisms, tunnel technology, especially...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/28H04L29/06H04L45/52
Inventor 罗超高世洪王国兵
Owner ZTE CORP
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