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The Switch forwards multicast traffic destined for multicast groups (that it has learned from IGMP
snooping or that you have manually configured) to ports that are members of that group. IGMP
snooping generates no additional network traffic, allowing you to significantly reduce multicast traffic
passing through your Switch.
IGMP Snooping and VLANs
The Switch can perform IGMP snooping on up to 16 VLANs. You can configure the Switch to
automatically learn multicast group membership of any VLANs. The Switch then performs IGMP
snooping on the first 16 VLANs that send IGMP packets. This is referred to as auto mode. Alternatively,
you can specify the VLANs that IGMP snooping should be performed on. This is referred to as fixed
mode. In fixed mode the Switch does not learn multicast group membership of any VLANs other than
those explicitly added as an IGMP snooping VLAN.
24.2 Multicast Setup
Use this screen to configure IGMP for IPv4 and set up multicast VLANs. Click Advanced Application >
Multicast in the navigation panel.
Figure 138 Advanced Application > Multicast Setup
The following table describes the labels in this screen.
Table 90 Advanced Application > Multicast Setup
LABEL
IPv4 Multicast
24.3 IPv4 Multicast Status
Click Advanced Application > Multicast > IPv4 Multicast to display the screen as shown. This screen
shows the IPv4 multicast group information. See
multicasting.
Figure 139 Advanced Application > Multicast > IPv4 Multicast
Chapter 24 Multicast
DESCRIPTION
Click the link to open screens where you can configure IGMP snooping and IGMP filtering for
IPv4.
XS1930 Series User's Guide
196
Section 24.1 on page 195
for more information on
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Troubleshooting
