In the network view's All devices list, right-click a device and select Provisioning > Manage variables.
In the Name box, type the item you want to add as a variable (such as IPaddress). Use quotation marks around names with spaces. Names are case-sensitive.
In the Value box, type the replacement value. You can use most values found in the core database. Use quotation marks around values with spaces. Values are case-sensitive.
Select the variable type:
String: An alpha-numeric string value.
Database value: A database ID string, such as Computer.Network."NIC Address".
Sensitive data: A value to be encrypted in the core database.