Reliable Multicast Communication System over IPv4/IPv6

Today the internet is predominantly based on IPv4. As a result, most of the end systems and network devices are able to exchange packets all together in a global network. But IPv4 was not developed to accommodate such a magnitude and broad range of use, so it has various problems including a limited address space and security issues. So IPv6 (Internet Protocol Version 6) has been developed based on IPv4 as a protocol for the next-generation Internet, and it has an expanded address space, security features, automatic network configuration, and guaranteed communication quality. Nowadays, computer based real time collaborative systems like shared whiteboards, collaborative editor etc. are only beginning to emerge recently. A key element to facilitate IP multicast is to reduce the amount of infrastructure and network support specially introduced for multicast. Multicast communication is a transmission mode that is now supported by a variety of local and wide area networks. Multicasting enables multiparty communication across a wide area to sparsely distributed groups by minimizing the network load. Multicasting itself is one of the key technologies in the next generation of the Internet. The technology is expected to serve to establish a new social infrastructure. We propose the design of the multicast communication over IPv4/IPv6 network environment. We present the mechanisms for the scalability of reliable group communication using single source multicast. These mechanisms use intermediate storage servers attached with routers enabling large-scale distribution of content from a well known sources to a general receiver.