D-Link DES-3326S manual VLANs, Defaultvlan

DES-3326S Layer 3 Fast Ethernet Switch User’s Guide

VLANs

A VLAN is a collection of end nodes grouped by logic rather

than physical location. End nodes that frequently communicate with each other are assigned to the same VLAN, regardless of where they are located physically on the network. Logically, a VLAN can be equated to a broadcast domain, because broadcast packets are forwarded only to members of the VLAN on which the broadcast was initiated.

Notes About VLANs on the DES-3326S

1.The DES-3326S supports IEEE 802.1Q VLANs. The port untagging function can be used to remove the 802.1Q tag from packet headers to maintain compatibility with devices that are tag- unaware (that is, network devices that do not support IEEE 802.1Q VLANs or tagging).

2.The switch’s default - in both Layer 2 Only mode and IP Routing mode - is to assign all ports to a single 802.1Q VLAN named

DEFAULT_VLAN.

3.The switch allows the assignment of an IP interface to each VLAN, in IP Routing mode. The VLANs must be configured before setting up the IP interfaces

4.A VLAN that is not assigned an IP interface will behave as a layer 2 VLAN – and IP routing, by the switch, will not be possible to this VLAN regardless of the switch’s operating mode.

72 Switch Management and Operating Concepts