> # Configuring an Allowed-Active List of VSANs

> ## Detailed Steps

> To configure an allowed-active list of VSANs for an interface using DCNM-SAN, follow these steps:

> 1. Expand FC Interfaces, and then select Physical. You see the interface configuration in the Information pane.

> You see the interface configuration in the Information pane.

> 2. Click the Trunk Config tab.

> You see the current trunk configuration.

> 3. Set Allowed VSANs to the list of allowed VSANs for each interface that you want to configure.
> 4. Click Apply Changes to save these changes or click Undo Changes to discard any unsaved changes.

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