ES-3124 User’s Guide
172 Chapter 22 Multicast
The following table describes the labels in this screen.
Table 53 Multicast Setting
LABEL DESCRIPTION
IGMP Snooping Use thise settings to configure IGMP Snooping.
Active Select Active to enable IGMP Snooping to forward group multicast traffic only to
ports that are members of that group.
Host Timeout Specify the time (from 1 to 16,711,450) in seconds that elapses before the switch
removes an IGMP group membership entry if it does not receive report messages
from the port.
Leave Timeout Enter an IGMP leave timeout value (from 1 to 16,711,450) in seconds. This defines
how many seconds the switch waits for an IGMP report before removing an IGMP
snooping membership entry when an IGMP leave message is received from a
host.
802.1p Priority Select a priority level (0-7) to which the switch changes the priority in outgoing
IGMP control packets. Otherwise, select No-Change to not replace the priority.
IGMP Filtering Select Active to enable IGMP filtering to control which IGMP groups a subscriber
on a port can join.
Unknown
Multicast Frame
Specify the action to perform when the switch receives an unknown multicast
frame. Select Drop to discard the frame(s). Select Flooding to send the frame(s)
to all ports.
Reserved
Multicast Group
Multicast addresses (224.0.0.0 to 224.0.0.255) are reserved for the local scope.
For examples, 224.0.0.1 is for all hosts in this subnet, 224.0.0.2 is for all multicast
routers in this subnet, etc. A router will not forward a packet with the destination IP
address within this range. See the IANA web site for more information.
Specify the action to perform when the switch receives a frame with a reserved
multicast address. Select Drop to discard the frame(s). Select Flooding to send
the frame(s) to all ports.
Port This field displays the port number.
* Settings in this row apply to all ports.
Use this row only if you want to make some settings the same for all ports. Use this
row first to set the common settings and then make adjustments on a port-by-port
basis.
Note: Changes in this row are copied to all the ports as soon as
you make them.
Immed. Leave Select this option to set the switch to remove this port from the multicast tree when
an IGMP version 2 leave message is received on this port.
Select this option if there is only one host connected to this port.
Group Limited Select this option to limit the number of multicast groups this port is allowed to join.
Max Group Num. Enter the number of multicast groups this port is allowed to join. Once a port is
registered in the specified number of multicast groups, any new IGMP join report
frame(s) is dropped on this port.
IGMP Filtering
Profile
Select the name of the IGMP filtering profile to use for this port. Otherwise, select
Default to prohibit the port from joining any multicast group.
