أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
IGMP is used in Multicast environments. IGMP Type field is related the Multicast group membership. Routers in a multicast environment periodically check memberships. There3 types (Membership Query, Membership Report, Leave Group). I think they are self explanatory.