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Method used for sending data, apparatus and system thereof

A technology for sending data and data packets, which is applied in the field of communication and can solve problems such as the inability to use multiple gateway scenarios

Active Publication Date: 2015-12-30
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1) At present, XLAT adopts the heuristic discovery method. There can only be one PLAT gateway in the network, and the same Pref64 prefix is ​​used to realize IPv6->IPv4 translation
[0008] 2) Pref64 prefix selection and flexible synthesis of IPv6 addresses cannot be performed
[0009] There may be multiple PLAT gateways in the live network, which can realize path optimization and different policy control, etc. Therefore, the current XLAT technology cannot be used in multi-gateway scenarios

Method used

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  • Method used for sending data, apparatus and system thereof
  • Method used for sending data, apparatus and system thereof
  • Method used for sending data, apparatus and system thereof

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Embodiment Construction

[0063] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative, and in no way serves as any limitation to the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0064] Unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0065] At the same time, it should ...

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Abstract

The invention discloses a method used for sending data, an apparatus and a system thereof. When first IPv6 address information sent by an DNS server is received, IPv4 address information is extracted from the first IPv6 address information. A prefix query request is sent to a prefix discovery server PDS, wherein the prefix query request comprises the IPv4 address information and NAT64 node prefix information used for conveniently inquiring an IPv4 address information ownership network segment. When the NAT64 node prefix information sent by the PDS is received, the NAT64 node prefix information and the IPv4 address information are used to generate second IPv6 address information. An IPv6 data packet is sent to an NAT64 node related to the second IPv6 address information so that the NAT64 node translates the IPv6 data packet into an IPv4 data packet and forwards the IPv4 data packet to an assigned IPv4 server. According to different IP address network segments, corresponding prefix information is configured so that an XLAT function can be extended and usage under a multiple-gateway scene is realized.

Description

Technical field [0001] The present invention relates to the field of communications, and in particular to a method, device and system for sending data. Background technique [0002] At present, XLAT technology enables numerous IPv4 (Internet Protocol version 4, Internet Protocol version 4) terminal access, and can migrate IPv4 users to IPv6 (Internet Protocol version 6, Internet Protocol version 6) networks without perception. [0003] XLAT consists of two parts: [0004] 1) CLAT-terminal-side translation, realizing terminal-side stateless NAT46 (NetworkAddressTranslatorIPv4toIPv6, network address translation from IPv4 to IPv6) translation; [0005] 2) PLAT-Network-side translation, which implements stateful NAT64 (NetworkAddressTranslatorIPv6toIPv4, network address translation from IPv6 to IPv4) translation on the network side. [0006] The existing XLAT technology has the following problems: [0007] 1) Currently XLAT adopts heuristic discovery method, there can only be one PLAT gatew...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12H04L12/741H04L45/74
Inventor 张志荣孙琼解冲锋王爱俊
Owner CHINA TELECOM CORP LTD
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