Can you tell me the difference between the encapsulation ppp and hdlc or show me a web site where i can get this informations.
HDLC is used on point-to-pont serial links suc as T1s, DS3 and now
Packet-over-SONET (POS). It has a low overhead in terms of the
additional bytes required over and above the layer 3 payload. There is
no authentication protocol for HDLC.
PPP was and is heavily used in async dial-up and provide for
authentication using PAP or CHAP protocol. Now there is also PPP over
A variation of PPP known as multi-link PPP (MLPPP) is quite popular for
loading balancing parallet circuit like T1's.