PPP Design Requirements [RFC 1557]

• packet framing: encapsulation of network-layer datagram in data link frame

  • carry network layer data of any network layer protocol (not just IP) at same time
  • ability to demultiplex upwards

• bit transparency: must carry any bit pattern in the data field

• error detection (no correction)

• connection livenes: detect, signal link failure to network layer

• network layer address negotiation: endpoint can learn/configure each other’s network address

Previous slide

Next slide

Back to first slide

View graphic version