Method and device for stateful conversion between IPv4 address and IPv6 address

An IP address and state transition technology, applied in the network field, can solve problems such as inefficient search methods and equipment performance bottlenecks, and achieve the effect of saving storage space and ensuring high efficiency
CN104243631AInactive Publication Date: 2014-12-24北京太一星晨信息技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
北京太一星晨信息技术有限公司
Publication Date
2014-12-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

Disclosed are a method and a device for stateful conversion between IPv4 address and IPv6 address. The method includes, after receiving an IP message, searching corresponding connection entry in a connection track table according to quintuple which includes IP address and ports of first protocol and is constructed by information of the IP message, and generating new connection entry if searching no records in the connection track table; performing cross-protocol-stack address conversion to the IP message and converting the IP address and port of the first protocol into the IP address and port of a second protocol; constructing quintuple of the IP message in the other direction according to the IP address and port of the second protocol, and writing the quintuple constructed by the IP message and the quintuple in the other direction into the new connection entry and mounting the same to the connection track table. The first protocol and the second protocol are respectively one of the IPv4 protocol and the IPv6 protocol and are different from each other. The invention further provides the corresponding device. By the method and the device, cross-protocol-stack address conversion with high search efficiency can be achieved while storage space can be saved.
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Description

technical field

[0001] The present invention relates to network technology, more specifically, to a method and equipment for stateful conversion between IPv4 addresses and IPv6 addresses. Background technique

[0002] The IPv6 protocol stack, as the next-generation IP protocol replacing the IPv4 protocol, has been widely promoted and implemented around the world, but for users who use the IPv4 protocol stack as the mainstream choice, how to achieve a smooth transition from the IPv4 environment to the IPv6 environment has become a more important and practical issues.

[0003] Currently proposed IPv4 address and IPv6 address conversion methods are divided into two types: stateful conversion and stateless conversion. Among them, the stateful conversion refers to maintaining the mapping relationship between the IPv4 address and port and the IPv6 address and port, and the conversion is performed based on this mapping relationship. Stateless means that according to the specified...

Claims

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