Configuring L2 Multicast Features; L2 Multicast Overview; What Are The Multicast Bridging Features - Dell PowerConnect 8024 User Configuration Manual

Configuring L2 Multicast Features

This chapter describes the layer 2 multicast features on the PowerConnect
8000-series and 8100-series switches. The features this chapter describes
include bridge multicast filtering, Internet Group Management Protocol
(IGMP) snooping, Multicast Listener Discovery (MLD) snooping, and
Multicast VLAN Registration (MVR).
The topics covered in this chapter include:
•

L2 Multicast Overview

• Snooping Switch Restrictions
• Current MLD Snooping Functional Limitations Summary
• Default L2 Multicast Values
• Configuring L2 Multicast Features (Web)
• Configuring L2 Multicast Features (CLI)
• Case Study on a Real-World Network Topology
L2 Multicast Overview
Multicast traffic is traffic from one source that has multiple destinations. The
L2 multicast features on the switch help control network flooding of Ethernet
multicast and IP multicast traffic by keeping track of multicast group
membership.

What Are the Multicast Bridging Features?

The PowerConnect 8000-series and 8100-series switches support bridge
multicast filtering and bridge multicast forwarding. For Ethernet multicast
traffic, the switch uses a database called the Layer 2 Multicast Forwarding
Database (MFDB) to make forwarding decisions for packets that arrive with a
multicast destination MAC address. By limiting multicasts to only certain
ports in the switch, traffic is prevented from going to parts of the network
where that traffic is unnecessary.
Configuring L2 Multicast Features
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