D-Link DSA-3200 Technical Information Seite 84

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xStack
®
DGS-3200 Series Layer 2 Managed Gigabit Ethernet Switch Web UI Reference Guide
70
IGMP Snooping
Internet Group Management Protocol (IGMP) snooping allows the Switch to recognize IGMP queries and reports sent between
network stations or devices and an IGMP host. When enabled for IGMP snooping, the Switch can open or close a port to a
specific device based on IGMP messages passing through the Switch.
IGMP Snooping Settings
In order to use IGMP Snooping it must first be enabled for the entire Switch under IGMP Global Settings at the top of the
window. You may then fine-tune the settings for each VLAN by clicking the corresponding Edit button. When enabled for IGMP
snooping, the Switch can open or close a port to a specific multicast group member based on IGMP messages sent from the device
to the IGMP host or vice versa. The Switch monitors IGMP messages and discontinues forwarding multicast packets when there
are no longer hosts requesting that they continue.
To view the following window, click L2 Features > L2 Multicast Control > IGMP Snooping > IGMP Snooping Settings:
Figure 3 - 25. IGMP Snooping Settings window
The following parameters may be viewed or configured:
Parameter Description
IGMP Snooping State
Click the radio button to enable or disable the IGMP snooping state.
Max Learned Entry Value (1-
256)
Specify the maximum number of groups that can be learned by the data driven
mechanism.
VID (VLAN ID)
This is the VLAN ID that, along with the VLAN Name, identifies the VLAN the user
wishes to modify the IGMP Snooping Settings for.
VLAN Name
This is the VLAN Name that, along with the VLAN ID, identifies the VLAN the user
wishes to modify the IGMP Snooping Settings for.
State Select Enabled to implement IGMP Snooping. This field is Disabled by default.
Parameter Settings Click the Edit button next to the VLAN you want to edit the IGMP Snooping
parameters for.
Click Apply to implement changes made. Click the Edit button to configure the IGMP Snooping Parameters Settings.
Click the Modify Router Port link to configure the IGMP Snooping Router Port Settings.
Click the Edit button to see the following window:
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