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Abstract : |
This paper presents a system, called mTunnel, for application level tunneling of IP-multicast traffic in a lightweight manner, where the end-user is responsible for deciding which MBone-sessions and which IP-multicast groups to tunnel. mTunnel is primarily designed for easy deployment and easy-to-manage tunneling. Information about currently tunneled sessions and control of mTunnel is provided through a Web-interface. To save bandwidth, tunneled streams can be transcoded on the media level and traffic sent through the tunnel can be compressed by grouping several packets together and using statistical compression. The overall bandwidth reduction achieved without modifying the media itself have been measured to be between 5 and 14 % depending on the traffic and media type. Key words: Internet, IP-multicast, tunneling, packet and header compression, rate control, automatic media transcoding, MBone, Java 1, |
