Method, device and system for sending data

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 realize the use of multi-gateway scenarios.

Active Publication Date: 2018-12-11
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, device and system for sending data
  • Method, device and system for sending data

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Embodiment Construction

[0063] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

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

[0065] At the same time, it should be understood that, for the convenience of d...

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Abstract

The invention discloses a method, device and system for sending data. Wherein when receiving the first IPv6 address information sent by the DNS server, extract the IPv4 address information from the first IPv6 address information; send the prefix query request to the prefix discovery server PDS, wherein the prefix query request includes IPv4 address information, so as to query IPv4 address information belongs to the NAT64 node prefix information of the network segment; when receiving the NAT64 node prefix information sent by the PDS, use the NAT64 node prefix information and IPv4 address information to generate the second IPv6 address information; send the IPv6 data packet to the second IPv6 The NAT64 node associated with the address information, so that the NAT64 node translates the IPv6 data packet into an IPv4 data packet, and forwards the IPv4 data packet to the specified IPv4 server. By configuring corresponding prefix information according to different IP address network segments, the XLAT function can be extended to realize the use in multi-gateway scenarios.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, device and system for sending data. Background technique [0002] At present, XLAT technology realizes the access of many IPv4 (Internet Protocol version 4, Internet Protocol version 4) terminals, and can migrate IPv4 users to IPv6 (Internet Protocol version 6, Internet Protocol version 6) network without perception. [0003] XLAT consists of two parts: [0004] 1) CLAT-terminal side translation, realizes terminal side stateless NAT46 (Network Address TranslatorIPv4to IPv6, IPv4 to IPv6 network address translation) translation; [0005] 2) PLAT-Network side translation, realizes stateful NAT64 (Network Address TranslatorIPv6to IPv4, IPv6 to IPv4 network address translation) translation on the network side. [0006] The existing XLAT technology has the following problems: [0007] 1) At present, XLAT adopts a heuristic discovery method. There can only be one PLAT gat...

Claims

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Application Information

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Patent Type & Authority Patents(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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