Dell PowerConnect 5548 User Guide - Page 527
Multicast TV VLAN, Multicast TV VLAN Overview
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Multicast TV VLAN This section describes the Multicast TV VLAN feature. It contains the following sections: • Multicast TV VLAN Overview • Multicast TV VLAN Membership • Multicast TV VLAN Mapping Multicast TV VLAN Overview The Multicast TV VLAN feature provides the ability to supply Multicast transmissions to Layer 2-isolated subscribers, without replicating the Multicast transmissions for all subscriber VLANs. The subscribers are the only receivers of the Multicast transmissions. • A Multicast TV VLAN can be defined for an Access port (a port that is in Access mode for VLAN membership). • All static VLANs are permitted to be a Multicast-TV VLAN. • The configuration is performed per port. One or more IP Multicast address groups can be associated with a Multicast VLAN. The source port must belong to the Multicast VLAN. Source and receiver ports do not have to be members of the same VLAN. An end port is defined as a receiver port for the Multicast VLAN. Receiving ports can belong to a single user VLAN and additionally to one Multicast VLAN. The receiver port can be an access member in any VLAN, but not in the defined Multicast VLAN. In Multicast VLAN, the receiver port can only receive traffic and not send traffic on it. Receivers of same Multicast VLAN are isolated in different User (Access port) VLANs and therefore isolated from each other. If a Multicast-TV VLAN is defined on an access port, then: • The access port joins the Multicast-TV VLAN. • The Multicast-TV VLAN on the receiver port is always untagged. • The acceptable frame type of the port is set to Admit Untagged Only. Dell PowerConnect 55xx Systems User Guide 527