VLAN configuration on Fabric Interconnects can be done either through LAN Uplink Manager or through the LAN tab in the navigation pane. Typically, both Fabric Interconnects have the same VLAN configuration, which is called global VLAN configuration. It is possible to configure VLANs that are available on only one of the two Fabric Interconnects which is called FI-specific VLAN configuration. It is also possible to configure a same VLAN differently on both Fabric Interconnects. Fabric Interconnects also support the creation of private VLANs.

The default VLAN is VLAN 1, which cannot be deleted and is available on both FIs. VLAN 1 is also the native VLAN. VLANs can be configured in the range of 1-3967 and 4049-4093. The 3968-4048 and 4094 VLAN IDs are reserved for system use on FIs and cannot be configured.

As the uplink ports on Fabric Interconnects are always trunk ports, UCS Manager automatically manages the allowed VLANs on FI uplink ports whenever a VLAN is created, deleted, or changed. Using the USC Manager VLAN wizard, it is possible to create a single VLAN or multiple VLANs, as shown in the following steps:

1. Log into UCS Manager.
2. Click on the LAN tab in the navigation pane.
3. In the LAN tab, right-click on any Fabric Interconnect or the VLAN tab and click on Create VLANs:

4. In order to configure a single VLAN, assign a VLAN name and ID.
5. Select the VLAN configuration type as Common/Global if the same VLAN configuration is required on both Fabric Interconnects.
6. Leave Sharing Type as None, which is the default selection. This selection can be changed if a private VLAN configuration is required.
7. Click on the Check Overlap button in order to verify uniqueness of the VLAN ID.
8. Click on OK to create the VLAN.

In order to create a VLAN range, perform the following steps:

1. Open the LAN tab in UCS Manager.
2. In the LAN tab, right-click on any Fabric Interconnect or the VLAN tab and click on Create VLANs.
3. In order to configure a VLAN range, assign a VLAN Name/Prefix and enter the range of VLAN IDs and click on OK.

4. VLANs will be created with a combination of prefix and VLAN numbers.
5. On the next window, click on OK again after verifying the new VLAN names.