# Types of Interfaces to Configure in the VPWS Instance

You must configure one of the following types of interfaces as a member of the VPWS to transmit packets between the PE router and each CE device to which the PE router is connected:

- ATM (AAL5 VCC transport or ATM VCC cell transport)
- Cisco HDLC
- Ethernet (Fast Ethernet, Gigabit Ethernet, or 10-Gigabit Ethernet)
- Frame Relay
- PPP
- VLAN and S-VLAN subinterfaces over Fast Ethernet, Gigabit Ethernet, or 10-Gigabit Ethernet interfaces