GS700TS Series Smart Switch Software User Manual - Andover ...
GS700TS Series Smart Switch Software User Manual - Andover ...
GS700TS Series Smart Switch Software User Manual - Andover ...
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<strong>GS700TS</strong> <strong>Series</strong> <strong>Smart</strong> <strong>Switch</strong> <strong>Software</strong> <strong>User</strong> <strong>Manual</strong><br />
• Registered Multicast traffic – If traffic addressed to a registered multicast group is seen it is<br />
handled by an entry in the Multicast Filtering Database and forwarded only to the registered<br />
ports.<br />
• Unregistered Multicast traffic – If traffic addressed to an unregistered multicast group is<br />
seen it is handled by a special entry in the Multicast Filtering Database. The default setting of<br />
this is to flood all such traffic (traffic in unregistered multicast groups).<br />
Layer 2 switching forwards multicast packets to all relevant VLAN ports by default, treating the<br />
packet as a multicast transmission. Multicast traffic forwarding is functional. However, irrelevant<br />
ports also receive the multicast, causing increased network traffic. Multicast forwarding filters<br />
enable forwarding of Layer 2 packets to port subsets, defined in the multicast filter database.<br />
The device supports forwarding L2 Multicast Packets. Multicast forwarding is enabled by default,<br />
and not configurable by user.<br />
This section contains the following topics:<br />
• Configuring IGMP Snooping<br />
• Defining Multicast Groups<br />
• Configuring Multicast Forward All<br />
Configuring IGMP Snooping<br />
When IGMP snooping is enabled, all IGMP packets are forwarded to the CPU. The CPU analyzes<br />
the incoming packets and determines which ports want to join which multicast groups, which ports<br />
have multicast routers generating IGMP queries, and what routing protocols are forwarding<br />
packets and multicast traffic. Ports requesting to join a specific multicast group issues an IGMP<br />
report specifying that multicast group.<br />
5-118 Configuring The Device Using Your Browser<br />
v1.0, November 2006