# Activating a Zone Set

You must activate a zone set to apply its zoning definitions to the fabric. When you activate a zone set, the switch distributes that zone set to the temporary zoning database on every switch in the fabric. However, in addition to the merged active zone set, each switch maintains its own original zone set in its zoning database. Only one zone set can be active at one time.

To activate a zone set, do the following:

1. In the faceplate display, open the Zoning menu and select Activate Zone Set.

2. In the Activate Zoneset dialog, select a zone set from the pull-down menu.

3. Click the Activate button.