Overview Of Using Vlans; Vlan Support And The Default Vlan; The Primary Vlan - HP ProCurve Series 4100GL Management And Configuration Manual

Port-Based Virtual LANs (VLANs) and GVRP
Port-Based Virtual LANs (Static VLANs)
12-6
Untagged VLAN Links
Figure 12-4. Example of Tagged and Untagged VLAN Technology in the Same
Network
For more information on VLANs, refer to:
"Overview of Using VLANs" (page 12-6)
■
■ "Menu: Configuring VLAN Parameters (page 12-10)
■ "CLI: Configuring VLAN Parameters" (page 12-10)
"Web: Viewing and Configuring VLAN Parameters" (page 12-21)
■
■ "VLAN Tagging Information" (page 12-22)
■ "Effect of VLANs on Other Switch Features" (page 12-30)
"VLAN Restrictions" (page 12-31)
■

Overview of Using VLANs

VLAN Support and the Default VLAN

In the factory default configuration, all ports on the switch belong to the
default VLAN (named DEFAULT_VLAN). This places all ports in the switch
into one physical broadcast domain. In the factory-default state, the default
VLAN is the primary VLAN.
You can partition the switch into multiple virtual broadcast domains by adding
one or more additional VLANs and moving ports from the default VLAN to the
new VLANs. (The switch supports up to 30 VLANs.) You can change the name
of the default VLAN, but you cannot change the default VLAN's VID (which is
always "1"). Although you can remove all ports from the default VLAN, this
VLAN is always present; that is, you cannot delete it from the switch.

The Primary VLAN

Because certain features and management functions, such as single IP-
address stacking, run on only one VLAN in the switch, and because DHCP and
Bootp can run per-VLAN, there is a need for a dedicated VLAN to manage these
HP
ProCurve
Switch
Tagged VLAN
Link
HP
ProCurve
Switch