Figure C.58: Igmp; Table 3.19: Igmp Types - Advantech EKI-7758F User Manual

IGMP Configuration
The Internet Group Management Protocol (IGMP) is a communications protocol used to
manage the membership of Internet Protocol multicast groups. IGMP is used by IP
hosts and adjacent multicast routers to establish multicast group memberships. It is an
integral part of the IP multicast specification, like ICMP for unicast connections. IGMP
can be used for online video and gaming, and allows more efficient use of resources
when supporting these uses.
IGMP have three fundamental types of message as follows:

Table 3.19: IGMP types

Message
A message sent from the querier (IGMP router or switch) asking for a response from each host
Query
belonging to the multicast group.
A message sent by a host to the querier to indicate that the host wants to be or is a member of a
Report
given group indicated in the report message.
A message sent by a host to the querier to indicate that the host has quit being a member of a
Leave Group
specific multicast group.
The switch support IP multicast, you can enable IGMP protocol on web management's
switch setting advanced page, then displays the IGMP snooping information. IP
multicast addresses range are from 224.0.0.0 through 239.255.255.255.
• IGMP Protocol: Enable or disable the IGMP protocol.
• IGMP Query: Select the IGMP query function as Enable or Auto to set the switch as
a querier for IGMP version 2 multicast network.
• Click 'Apply'.
Description

Figure C.58: IGMP

127