This book provides a concise guide to IP Multicast technology and its applications, with a focus on IP-based television and digital video broadcast - hand held applications areas of tremendous commercial interest. After an introduction that gets readers up to speed on the basics, the book: discusses multi cast addressing for payload and payload forwarding; covers routing in a variety of protocols; discusses multi casting in IPv6 environments and multi cast listener discovery; and, features examples of IP Multicast applications in the IPTV and mobile DVB-H environments.