Igmp Snooping - EverFocus ES2446-51 User Manual

 Admin State: There are 3 types, Auto, Force Authorized and Force Unauthorized.
Auto: Select Auto when you enabled the IEEE 802.1X. If the client is successfully
authorized, the port is authorized to be used as well. Otherwise, the port can't be
used.
Force Authorized: The default value. No matter the IEEE 802.1X is enabled or not,
the port is always authorized to be used.
Force Unauthorized: No matter the IEEE 802.1X is enabled or not, the port is
always unauthorized to be used.
 Port State: It indicates the state of the port. Authorized means the port is
successfully authorized by the RADIUS server or the port is configured as "Force
Authorized".
 Others: Re-authenticate allows restart the authentication process, Force
Reinitialize reinitializes the process and the Statistics displays the IEEE 802.1X
counters and information of each port.

4.1.8 IGMP Snooping

IGMP Snooping is the process of listening to IGMP network traffic. IGMP Snooping,
as implied by the name, is a feature that allows a layer 2 switch to "listen in" on the
IGMP conversation between hosts and routers by processing the layer3 IGMP
packets sent in a multicast network.
When IGMP Snooping is enabled in a switch it analyzes all IGMP packets between
hosts connected to the switch and multicast routers in the network. When a switch
hears an IGMP report from a host for a given multicast group, the switch adds the
host's port number to the multicast list for that group. And, when the switch hears
an IGMP Leave, it removes the host's port from the table entry.
Prevents flooding of IP multicast traffic, and limits bandwidth intensive video traffic
to only the subscribers.
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