Multimedia Multicast Based On Ipv6 Qos System Design And Implementation

With the rapid growth of Internet users, currently used IPv4 protocol address pool has been declared exhausted; we have turned to IPv6 which has more address space. Not only have IPv6 compared to IPv4 address space up to 2, but lessons in the design experience of the IPv4 protocol, it provides a more compact solution possible to resolve the IP routing and QoS implementation. In the IPv6 protocol-based next generation Internet, multimedia applications will be more widely used, such as IPTV, video telephony, video conferencing, video on demand, etc. These applications require larger amounts of bandwidth guarantee. Multicast is a multi-point transmission and for multi-group communication model for collaborative applications, with efficient data transmission efficiency. Multicast is an important support technology in the next-generation Internet application. As multimedia data with real-time features, it is very sensitive in network transmission delay, jitter, so these applications multicast communication network a higher quality of service requirements. Multicast QoS(Quantity of Service) measurement and control are more and more meaningful.This paper studies, in IPv6 Ethernet, multimedia multicast through a comprehensive quality of the measurement and evaluation, and managed network of real-time operation, for the poor results of the assessment of multimedia multicast service automatically switches to the relevant QoS control to make the multicast unit enhance service quality to improve the user experience.This paper first analyzes the multimedia multicast quality measurement and assessment methods, introduced how to obtain real-time operation of a managed network approach by the SNMP protocol. Then made a comprehensive evaluation model, which combines the multicast measurements, the switch operation status and bandwidth usage, resulting in a switch-based DiffServ QoS commands. The paper describes the entire system structure and main modules of the implementation details. Finally, a summary of the system and put forward some further improvement possible.This study is supported by the National Science and Technology Support Program, "a new generation trusted Internet security and network services" subject (subject number: 2008BAH37B04).