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E-learning is not limited to distance education, it can also play an important role in the campus network. It requires higher bandwidth and lower latency. At present, E-learning runs in Switched Ethernet environment, and almost all of them use broadcast mode to process multicast data, which is not real multicast, which seriously wastes network bandwidth and host resources. Therefore, in order to make full use of campus network bandwidth, the author developed "Multimedia E-learning System based on IGMP Snooping Multicast", which was tested in the campus network LAN. This paper introduces multicast address firstly. Secondly, it puts forward the IGMP snooping. Finally, the implementation of audio / video in campus network multimedia system is given by using Java Media Framework (JMF) technology. At present, the system works well, and the audio / video transmission is smooth and natural. Using Ethernet peek real-time network protocol analyzer to monitor data packets, verify the feasibility of the two-layer multicast scheme, the system realizes true layer-2 multicast.

Multimedia network technology is one of the most popular technologies in network application development, such as video conference, network classroom and other multimedia services. However, these services have high requirements for network delay and bandwidth. In addition, Facing the future and the "post epidemic era", aiming at the problem of multimedia application on the network, If we use the usual unicast communication, it will inevitably lead to a serious waste of bandwidth, and greatly increase the burden of the server, which is obviously a pair of contradictions with precious resources; if we use multicast communication, we can reduce this contradiction. This paper introduces multicast technology firstly. Secondly, it puts forward the multicast idea of campus network multimedia system: deploy IGMP snooping protocol in switching Ethernet, and combine VLAN technology. Thirdly, it provides a framework of multimedia multicast system on the campus based on MVC pattern. Then it describes the designing solution particularly and development method of the difficulty. By experiment, this system has good maintainability and expandability. In the multicast communication mode, the network traffic does not increase with the increase of the traffic, and obtains a good subjective quality evaluation. Audio / video transfers fluency, the flux of network reduces, and has a shorter transmission delay.

The efficient provision of IPTV services requires support for IP multicasting and IGMP snooping, limiting such services to single operator networks. Information-Centric Networking (ICN), with its native support for multicast seems ideal for such services, but it requires operators and users to overhaul their networks and applications. The POINT project has proposed a hybrid, IP-over-ICN, architecture, preserving IP devices and applications at the edge, but interconnecting them via an SDN-based ICN core. This allows individual operators to exploit the benefits of ICN, without expecting the rest of the Internet to change. In this paper, we first outline the POINT approach and show how it can handle multicast-based IPTV services in a more efficient and resilient manner than IP. We then describe a successful trial of the POINT prototype in a production network, where real users tested actual IPTV services over both IP and POINT under regular and exceptional conditions. Results from the trial show that the POINT prototype matched or improved upon the services offered via plain IP.