Multicast Open Shortest Path First
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In computer networking, the Multicast Open Shortest Path First (MOSPF) protocol is a multicast routing protocol used to support multicasting on a large internetwork so that routers are able to share their information about host group memberships.
The routing and remote access service (RRAS) in Windows Server 2003 supports only the internet group management protocol (IGMP), another multicast routing protocol.