
Industrial Managed
Ethernet Switch
User Manual
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Figure 2.85 IGMP Setting Webpage
Table 2.26 Descriptions of IGMP
’s Settings
Label
Description
Factory
Default
IGMP Snooping
Check the box to enable IGMP snooping
.
Disabled
IGMP Proxy
Check the box to enable IGMP proxy
.
See note below
.
Disabled
IGMPFast
-
leave
Check the box to enable IGMP Fast
-
leave
.
See note below
.
Disabled
Router's IP
Display the multicast router
’s IP address
.
-
Router's Port
Display the port that is connected to multicast router
.
-
*
NOTE
:
IGMP Proxy
works as an intermediate server, as shown in Figure 2.86
When it receives a membership query
message from the router, it sends a membership report message to the router port
.
When it receives a membership
report message from a computer in a new multicast group, it sends a membership report message back to the
router port
.
When it receives a leave group message from a computer which is the only one in the group, it sends
a leave group message to the router port and removes the computer from multicast group
.
Proxy is like a middle
man that handles information about multicast group in between routers and computers
.