PPPoA
Point-to-Point Protocol (PPP) over ATM, is a network protocol for encapsulating PPP frames in ATM AAL5. It used mainly with cable modem and DSL services. It offers standard PPP features such as authentication, encryption, and compression.
PPPoA is published in RFC 2364.
To configure PPPoA on a Cisco router providing DSL services, a "Virtual-Template" is configured, which is then bound to the ATM interface. A configuration snippet is below:
interface Virtual-Template1
ip unnumbered FastEthernet0/0
peer default ip address pool dslPPP
ppp authentication pap
interface ATM1/0.32 point-to-point
pvc 1/32
ubr 640
encapsulation aal5mux ppp Virtual-Template1
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