DELL N3000 Manual Do Utilizador

Switch Feature Overview

For information about configuring VLAN features see "Configuring VLANs" 

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 a combination of the ingress port and packet contents. Packets 

sharing common attributes can be groups in the same VLAN. The Dell 

Networking series switches are in full compliance with IEEE 802.1Q VLAN 

tagging. 

Port-based VLANs classify incoming packets to VLANs based on their ingress 

port. When a port uses 802.1X port authentication, packets can be assigned 

to a VLAN based on the result of the 802.1X authentication a client uses 

when it accesses the switch. This feature is useful for assigning traffic to 

Guest VLANs or Voice VLANs.

This feature allows incoming untagged packets to be assigned to a VLAN and 

traffic class based on the source IP address of the packet.

This feature allows incoming untagged packets to be assigned to a VLAN and 

traffic class based on the source MAC address of the packet.

VLAN classification rules are defined on data-link layer (Layer 2) protocol 

identification. Protocol-based VLANs are used for isolating Layer 2 traffic for 

differing Layer 3 protocols.