Vlans - D-Link DES-3326SR User Manual

DES-3326SR Layer 3 Fast Ethernet Switch User's Guide

VLANs

A VLAN is a collection of end nodes grouped by logic rather
than physical location.
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-3326SR
1. The DES-3326SR supports IEEE 802.1Q VLANs. The
port untagging function can be used to remove the
802.1Q tag from
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 is to assign all ports to a single
802.1Q VLAN named
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.
IEEE 802.1Q VLANs
Some relevant terms:
End nodes that frequently
packet headers to
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maintain