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Dell PowerConnect 55xx Systems User Guide
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D E L L CO N F I D E N T I A L – P R E L I MI N A RY 10 / 3 0 /1 3 - FO R PR O O F O N LY
VLAN Supported Features
VLAN Support
VLANs are collections of switching ports that comprise a single Broadcast
domain. Packets are classified as belonging to a VLAN, based on either the
VLAN tag or on a combination of the ingress port and packet contents.
Packets sharing common attributes can be grouped in the same VLAN.
For more information, see "VLANs" on page 467.
Port-Based Virtual LANs (VLANs)
Port-based VLANs classify incoming packets to VLANs, based on their ingress
port.
For more information, see "Defining VLAN Membership Using CLI
Full 802.1Q VLAN Tagging Compliance
IEEE 802.1Q defines an architecture for virtual, bridged LANs, the services
provided in VLANs, and the protocols and algorithms involved in the
provision of these services.
For more information, see "Virtual LAN Overview" on page 468.
GVRP Support
GARP VLAN Registration Protocol
(GVRP) provides IEEE 802.1Q-
compliant VLAN pruning and dynamic VLAN creation. When GVRP is
enabled, the device registers and propagates VLAN membership on all ports
that are part of the active underlying Spanning Tree Protocol topology.
For more information, see "GVRP Parameters" on page 491.
Voice VLAN
Voice VLAN enables network administrators to enhance VoIP service by
configuring ports to carry IP voice traffic from IP phones on a specific VLAN.
VoIP traffic has a preconfigured OUI prefix in the source MAC address.
Network administrators can configure VLANs from which voice IP traffic is