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the same multicast VLAN. This saves the bandwidth since multicast streams are transmitted
only within the multicast VLAN and also guarantees security because the multicast VLAN is
isolated from user VLANS.
Before configuring a multicast VLAN, you should firstly configure a VLAN as multicast VLAN
and add the corresponding ports to the VLAN on the 802.1Q VLAN page. If the multicast VLAN
is enabled, the multicast configuration for other VLANs on the VLAN Config page will be invalid,
that is, the multicast streams will be transmitted only within the multicast VLAN.
Choose the menu Multicast→IGMP Snooping→Multicast VLAN to load the following page.
Figure 8-7 Multicast VLAN
The following entries are displayed on this screen:
Multicast VLAN
Multicast VLAN:
Select Enable/Disable Multicast VLAN feature.
VLAN ID:
Enter the VLAN ID of the multicast VLAN.
Router Port Time: Specify the aging time of the router po
rt. Within this time, if the
switch doesn’
t receive IGMP query message from the router
port, it will consider this port is not a router port any more.
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