Switches can be divided into ordinary and network-managed ones. Ordinary Switches require no setting; they can plug and play. Network-managed switches include Layer-2 switches and Layer-3 switches. Layer-2 switches feature multiple functionalities such as VLAN, Spanning Tree, Access-List, etc.; Layer-3 switches are capable of accomplishing router tasks in addition to functionalities of a Layer-2 switch, so are usually the core switch in the local area.