D-Link DWS/DXS-3200 manual Defining Igmp Snooping

DXS/DWS 3200 Series User Guide

Defining IGMP Snooping

When IGMP Snooping is enabled globally, all IGMP packets are forwarded to the CPU. The CPU analyzes the incoming packets and determines:

•Which ports want to join which Multicast groups.

•Which ports have Multicast routers generating IGMP queries.

•Which routing protocols are forwarding packets and Multicast traffic.

Ports requesting to join a specific Multicast group issue an IGMP report, specifying that Multicast group is accept- ing members. This results in the creation of the Multicast filtering database.

To enable IGMP Snooping:

1.Click Advanced Setup > Multicast Support > IGMP Snooping.The IGMP Snooping Page opens:

Figure 131:IGMP Snooping Page

The IGMP Snooping Page contains the following fields:

•Enable IGMP Snooping Status — Indicates if IGMP Snooping is enabled on the device. IGMP Snooping can be enabled only if Bridge Multicast Filtering is enabled. The possible field values are:

–Checked — Enables IGMP Snooping on the device.

–Unchecked — Disables IGMP Snooping on the device.

•VLAN ID — Specifies the VLAN ID.

•IGMP Snooping Status — Indicates if IGMP snooping is enabled on the VLAN. The possible field values are:

–Enable — Enables IGMP Snooping on the VLAN.

–Disable — Disables IGMP Snooping on the VLAN.

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