Dell PowerConnect 8024 User Configuration Manual page 558

priority over other traffic, such as data. Administrators also use VLANs to
protect network resources. Traffic sent by authenticated clients might be
assigned to one VLAN, while traffic sent from unauthenticated clients might
be assigned to a different VLAN that allows limited network access.
When one host in a VLAN sends a broadcast, the switch forwards traffic only
to other members of that VLAN. For traffic to go from a host in one VLAN to
a host in a different VLAN, the traffic must be forwarded by a layer 3 device,
such as a router. VLANs work across multiple switches, so there is no
requirement for the hosts to be located near each other to participate in the
same VLAN.
NOTE:
PowerConnect 8024 and 8024F switches support VLAN routing. When you
configure VLAN routing, the switch acts as a layer 3 device and can forward traffic
between VLANs. For more information, see "What Are VLAN Routing Interfaces?"
on page 835.
Each VLAN has a unique number, called the VLAN ID. The PowerConnect
8024 and 8024F switches support a configurable VLAN ID range of 2–4093. A
VLAN with VLAN ID 1 is configured on the switch by default. You can
associate a name with the VLAN ID. In a tagged frame, the VLAN is
identified by the VLAN ID in the tag. In an untagged frame, the VLAN
identifier is the Port VLAN ID (PVID) specified for the port that received the
frame. For information about tagged and untagged frames, see "VLAN
Tagging" on page 561.
The PowerConnect 8024 and 8024F switches support adding individual ports
and Link Aggregation Groups (LAGs) as VLAN members.
Figure 21-1 shows an example of a network with three VLANs that are
department-based. The file server and end stations for the department are all
members of the same VLAN.
558
Configuring VLANs