Users Guide

Switch Feature Overview 83
Voice VLAN
The Voice VLAN feature enables switch ports to carry voice traffic with a
configured QoS and to optionally authenticate phones on the network. This
allows preferential treatment of voice traffic over data traffic transiting the
switch. Voice VLAN is the preferred solution for enterprises wishing to deploy
VoIP services in their network.
GARP and GVRP Support
The switch supports the Generic Attribute Registration Protocol (GARP).
GARP VLAN Registration Protocol (GVRP) relies on the services provided by
GARP to provide IEEE 802.1Q-compliant VLAN pruning and dynamic
VLAN creation on 802.1Q trunk ports. When GVRP is enabled, the switch
registers and propagates VLAN membership on all ports that are part of the
active spanning tree protocol topology.
For information about configuring GARP timers see "Layer-2 Multicast
Features" on page 917.
Guest VLAN
The Guest VLAN feature allows the administrator to provide service to
unauthenticated users, i.e., users that are unable to support 802.1X
authentication.
For information about configuring the Guest VLAN see "Guest VLAN" on
page 320.
Unauthorized VLAN
The Unauthorized VLAN feature allows the administrator to configure a
VLAN for 802.1X-aware hosts that attempt authentication and fail.
Double VLANs
NOTE: DVLAN is not available on the N3000E-ON running the AGREGATION
ROUTER image.