VLAN Management
Regular VLANs
Cisco 500 Series Stackable Managed Switch Administration Guide 268
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• Until the port is authenticated, it is excluded from all VLANs, except guest 
and unauthenticated ones. In the VLAN to Port page, the port is marked with 
an upper case P.
• When the port is authenticated, it receives membership in the VLAN in 
which it was configured.
To assign a port to one or more VLANs:
STEP 1 Click VLAN Management > Port VLAN Membership.
STEP  2 Select interface type (Port or LAG), and click Go. The following fields are 
displayed for all interfaces of the selected type:
• Interface—Port/LAG ID. 
• Mode—Interface VLAN mode that was selected in the Interface Settings 
page. 
• Administrative VLANs—Drop-down list that displays all VLANs of which 
the interface might be a member. 
• Operational VLANs—Drop-down list that displays all VLANs of which the 
interface is currently a member. 
• LAG—If interface selected is Port, displays the LAG in which it is a member.
STEP  3 Select a port, and click the Join VLAN button.
STEP  4 Enter the values for the following fields:
• Interface—Select a Port or LAG. Select the Unit/Slot on a 500 Series 
device.
• Mode—Displays the port VLAN mode that was selected in the Interface 
Settings page. 
• Select VLAN—To associate a port with a VLAN(s), move the VLAN ID(s) from 
the left list to the right list by using the arrow buttons. The default VLAN might 
appear in the right list if it is tagged, but it cannot be selected.
• Tagging—Select one of the following tagging/PVID options:
- Forbidden—The interface is not allowed to join the VLAN even from 
GVRP registration. When a port is not a member of any other VLAN, 
enabling this option on the port makes the port part of internal VLAN 
4095 (a reserved VID). 
- Ta g g e d —Select whether port is tagged.