Multimedia interactive gateway realizing method under IPv4/IPv6 mixed environment

A hybrid environment and implementation method technology, applied in hybrid switch systems, star/tree networks, network connections, etc., can solve problems that do not fully consider the diversity of network environments, do not have fast protocol conversion functions, and cannot meet large-scale Multi-point multimedia interactive application and other issues, to achieve the effect of easy operation and transparency, saving time and ensuring interoperability

Inactive Publication Date: 2007-11-07
XI AN JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

NAT-PT technology is mainly used to realize the intercommunication of non-dual-stack IPv4 and IPv6 nodes, but it often needs to be used in combination with specific application layer gateway technology, which cannot meet the large-scale multi-point multimedia interactive application
[0003] At present, for large-scale multimedia transmission and interaction technology, application layer multicast technology is widely adopted. However, application layer multicast nodes are often only for the distribution of multimedia data, without fully considering the diversity of the network environment, and do not have the capability for IPv4 / IPv6 network Rapid protocol conversion capability in mixed environments

Method used

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  • Multimedia interactive gateway realizing method under IPv4/IPv6 mixed environment
  • Multimedia interactive gateway realizing method under IPv4/IPv6 mixed environment
  • Multimedia interactive gateway realizing method under IPv4/IPv6 mixed environment

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specific Embodiment approach

[0096] The protocol conversion module works at the data link layer. Its specific implementation is as follows:

[0097]First, link-layer data is captured from the network interface. Data capture uses the pcap_loop function of the winpcap development kit.

[0098] Then, perform protocol conversion from IPv4 to IPv4, IPv4 to IPv6, IPv6 to IPv4, or IPv6 to IPv6 on the captured link frame according to the application policy.

[0099] Finally, the frame after protocol conversion is sent out through the network interface, and the data is sent using the pcap_sendpacket function of the winpcap development kit.

[0100] In order to clearly illustrate the specific implementation of protocol conversion, it is first necessary to formally describe the format of data frames and data packets.

[0101] F represents the link layer data frame, SM represents the MAC address of the source host, DM represents the MAC address of the destination host, C represents the checksum value, P represents...

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Abstract

A method for realizing interactive gateway of multimedia under IPv4/IPv6 mixed environment includes using session management layer and transmission control layer as well as protocol conversion layer to carry out layering control, realizing an adaptive multicast means under IPv4/IPv6 mixed environment by transmission control layer according user login information and gateway load balancing information of session management layer in order to adaptively realize application layer multicast and network layer multicast as well as agent function of network penetration.

Description

technical field [0001] The invention belongs to the technical field of computer design and application, relates to computer software, data transmission technology, multimedia technology and IPv4 and IPv6 networks, in particular to a multi-point real-time multimedia interactive gateway supporting IPv4 / IPv6 mixed environment. Background technique [0002] At present, for the interconnection and intercommunication technology in the IPv4 / IPv6 mixed environment, the methods to solve the problem mainly include tunnel technology, dual protocol stack technology, and protocol conversion technology NAT-PT. Tunnel technology is suitable for IPv6 isolated islands to achieve interconnection through tunnels across IPv4 networks. Dual protocol stack technology requires all nodes to have the ability to access IPv4 and IPv6, and the two do not support the interconnection and intercommunication of pure IPv4 and pure IPv6 network environments. NAT-PT technology is mainly used to realize the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/66H04L29/06H04L12/64H04L12/44
Inventor 郑庆华刘均张未展何京江郏新颜车轶刘文江陈杰
Owner XI AN JIAOTONG UNIV
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