User`s manual
NVF-800S 4-Band VDSL IP DSLAM USER’S MANUAL
Ver_B.2
104
IGMP have three fundamental types of message as follows:
Item Description
Query:
A message sent from the queries (IGMP bridge or NVF-800S) asking for a response from
each host belonging to the multicast group.
Report:
A message sent by a host to the queries to indicate that the host wants to be or is a member
of a given group indicated in the report message.
Leave Group:
A message sent by a host to the queries to indicate that the host has quit being a member of
a specific multicast group.