Point-to-Point Protocol over Ethernet (PPPoE)
is a configuration option for Digital Subscriber Line (DSL) circuits.
You can configure PPPoE only on WAN ports and physical interfaces.
You cannot configure it on sub-interfaces or logical interfaces
such as bypass pairs or an interface with Layer 3 configuration,
such as DHCP or static IP addresses.
Upon completing PPPoE
authentication, the system establishes a connection with the DSL
provider. In the event of PPPoE connection failures or termination,
this PPPoE logical interface displays as down.
A logical PPPoE
interface acts as the underlay interface for all Prisma SD-WAN-related
features, statistics, counters, and configuration.