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A kind of ipv6 transition method and device

A technology of ipv6 address and ipv4 address, which is applied in the communication field and can solve problems such as large storage resources, reduced forwarding efficiency, and table entry occupation

Active Publication Date: 2020-07-07
HANGZHOU DPTECH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides an IPv6 transition method and device to solve the problem that the entries in NAT64 in the NAT64 gateway occupy relatively large storage resources, thereby reducing the forwarding efficiency

Method used

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  • A kind of ipv6 transition method and device
  • A kind of ipv6 transition method and device
  • A kind of ipv6 transition method and device

Examples

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Embodiment Construction

[0048] See figure 1 , Is a network architecture diagram in an exemplary embodiment of the present invention, where the customer network is an IPv6 network and contains many IPv6 hosts; CPE is the boundary between the customer network and the IPv6 operator network, because both sides of the CPE are IPv6 networks, Then the CPE can be used as the default router for the IPv6 customer network to access the IPv6 operator's network. The IPv6 operator’s network contains a NAT64 gateway and a DNS64 server. The DNS64 server can respond to DNS queries from the IPv6 host to the IPv4 server and return a synthesized IPv6 address. The NAT64 gateway is the boundary between the IPv6 network and the IPv4 network, and is used for IPv6 and IPv4 reports. Mutual translation of headings. The IPv4 Internet includes a DNS server and an IPv4 server. The DNS server is used to respond to DNS queries made by the DNS64 server to the IPv4 server domain name or public domain name; the IPv4 server responds to ...

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PUM

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Abstract

The present invention provides an IPv6 transition method and device. The method includes: when a request message sent by an IPv6 host is received, judging whether the destination IPv6 address of the request message includes a destination IPv4 address; The source IPv6 address of the request message is converted into a composite address comprising the source IPv4 address; the address translation relationship between the source IPv6 address and the composite address is recorded; the request message is sent to the NAT64 gateway, so that the NAT64 gateway The source IPv4 address and the destination IPv4 address in the request message are forwarded to the IPv4 server. Therefore, the number of entries on the NAT64 gateway and the number of traceback logs can be reduced, thereby improving the forwarding efficiency of the NAT64 gateway.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to an IPv6 transition method and device. Background technique [0002] With the increasing depletion of IPv4 addresses, more users need to access IPv4 networks through IPv6 networks. In the prior art, the NAT64 mechanism can realize that the IPv6 host accesses the IPv6 operator network through the CPE (IPv6 router), and accesses the IPv4 Internet server through the NAT64 gateway. [0003] In the NAT64 mechanism, usually the client host is a single IPv6 host, the CPE is an IPv6 router, and all IPv4 <-> IPv6 functions are all implemented in the NAT64 gateway. Since the NAT64 gateway is usually based on the dynamic sharing of the public network IPv4 address of each flow, the content of the NAT64 address translation that needs to be recorded in the NAT64 gateway is extremely large, which takes up a lot of storage resources and reduces the forwarding efficiency. Summary o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/12H04L12/749H04L45/741
CPCH04L45/741H04L61/251
Inventor 陈忠良
Owner HANGZHOU DPTECH TECH