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Cooper Bussmann 5073E-T Managed Ethernet Switch User Manual
55
Rev Version 1.1
Message
Description
Leave Group
A message sent by a host to the querier to indicate that the host has quit being a
member of a specific multicast group.
IGMP Snooping
If the switch supports IP multicast, you can enable the IGMP protocol. To display this page, choose
Configure
-->
Multicast Support-
->
IGMP Snooping
. When IGMP Snooping is enabled, the IGMP snooping
information displays on the page. IP multicast addresses range from 224.0.0.0 through 239.255.255.255.
NOTE There must be at least one switch that is enabled for IGMP query in your network. All other switches
must enable IGMP snooping.
Figure 56 IGMP Snooping
IGMP Snooping
Enable or disable the IGMP protocol.
IGMP Query
Enable or disable the IGMP query function. The IGMP query information will be
displayed in IGMP status section.
IGMP Unregister
Stream
Specify how the switch should process the IGMP unregistered stream:
•
Source Only
—IGMP unregister stream packets are sent to the source port
from which those packets were received.
•
Blocking
—IGMP Unregister Stream packets are dropped.
•
Flooding
—IGMP Unregister Stream packets are sent to all ports.
Apply
Click to apply the settings.
Static Filtering
Multicasts are similar to broadcasts in that they are sent to all end stations on a LAN or VLAN. With multicast
filtering, end stations can receive multicast traffic if the connected ports are included in the specified multicast
groups, and network devices only forward multicast traffic to the ports that are connected to the registered end
stations.