DELL N3000 User Manual

Switch Feature Overview

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 "Configuring L2 

The Voice VLAN feature enables switch ports to carry voice traffic with 

defined priority. The priority level enables the separation of voice and data 

traffic coming onto the port. Voice VLAN is the preferred solution for 

enterprises wishing to deploy voice services in their network.

The Guest VLAN feature allows a switch to provide a distinguished service to 

unauthenticated users. This feature provides a mechanism to allow visitors 

and contractors to have network access to reach external network with no 

ability to browse information on the internal LAN.
For information about configuring the Guest VLAN see "Configuring Port 

The Double VLAN feature (IEEE 802.1QinQ) allows the use of a second tag 

on network traffic. The additional tag helps differentiate between customers 

in the Metropolitan Area Networks (MAN) while preserving individual 

customer’s VLAN identification when they enter their own 802.1Q domain.