If you have a large campus LAN where several outlying buildings connect back to your datacenter via fiber, is it good practice to put your locations into seperate vtp domains instead of having one large vtp domain? For instance if you had Site A connecting back your your datacenter via fiber, should you setup your vlans for site A in their own vtp domain and then create another vlan for the fiber connection back to the datacenter? So on the datacenter switch you would create one interface for the VLAN that is used for the fiber link. The ports connected to the fiber would then be in access mode insted of trunk mode.