IP Multicast architecture Service model Hosts Host-to-router protocol (IGMP Routers Multicast routing protocols ( MOSPF, DVMRE…) 10/5/06 ecture #12: Inter-Domain Routing 610/5/06 Lecture #12: Inter-Domain Routing 6 IP Multicast Architecture Hosts Routers Service model Host-to-router protocol (IGMP) Multicast routing protocols (MOSPF, DVMRP,…)