Features
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D E L L CO N F I D E N T I A L – P R E L I M I N A RY 8 / 9 / 16 - F O R P RO O F O N L Y
Private VLAN
The Private VLAN feature provides Layer 2 isolation between ports that share
the same Broadcast domain, or in other words, it creates a point-to-
multipoint Broadcast domain. The ports can be located anywhere in the
Layer 2 network.
For more information, see
Multicast TV VLAN
The Multicast TV VLAN feature provides the ability to supply multicast
transmissions to Layer 2-isolated subscribers, without replicating the
multicast transmissions for each subscriber VLAN. The subscribers are the
only receivers of the multicast transmissions.
For more information, see
.
Spanning Tree Protocol Features
Spanning Tree Protocol (STP)
802.1d Spanning Tree is a standard Layer 2 switch requirement that enables
bridges to automatically prevent and resolve Layer 2 forwarding loops.
Switches exchange configuration messages using specifically-formatted
frames, and selectively enable and disable forwarding on ports.
For more information, see
Fast Link
STP can take 30–60 seconds to converge. During this time, STP detects
possible loops, enabling time for status changes to propagate and for relevant
devices to respond. This period of 30-60 seconds is considered too long a
response time for many applications. The Fast Link option bypasses this
delay, and can be used in network topologies where forwarding loops do not
occur, for example, on edge ports connecting to endpoint devices.
For more information on enabling Fast Link for ports and LAGs, see
