Hierarchical level-based IP multicasting for tactical networks
J. Lee, Matthew Cheng · 2003
A new IP multicast routing protocol, called "hierarchical level based IP multicasting" (HLIM), is proposed for tactical networks. Unlike the existing IP multicasting schemes, HLIM can provide a shared and shortest-path multicast tree without using a concentration point like a core or rendezvous point. It supports not only host mobility (movements of IP hosts) but also network mobility (movement of IP routers with/without hosts). The shortest paths between mobile sources and receivers can still be maintained after a host or network movement.