Configuring Encapsulation on the ATM Physical Interface
To configure the type of encapsulation for the physical ATM interface, include the encapsulation statement at the [edit interfaces at-pim /0/port] hierarchy level:
Configure one of the following:
atm-pvc—ATM permanent virtual circuits (PVCs), used for PPP over ATM over SHDSL interfaces. This is the default encapsulation.
ether-over-atm—Ethernet over ATM encapsulation. For interfaces that carry IPv4 traffic, use this type of encapsulation.