Prev: Cisco 7911 IP Phone with CCME 4 problem
Next: Up Arrow
From: answers on 10 Sep 2006 07:01
what are the major differences between HDLC and PPP? How are they
mainly used?

From: answers on 10 Sep 2006 07:11

answers wrote:
> what are the major differences between HDLC and PPP? How are they
> mainly used?

And forgot to mention...what are the differences between PPP and Frame
relay ?

From: Merv on 10 Sep 2006 09:58

answers wrote:
> answers wrote:
> > what are the major differences between HDLC and PPP? How are they
> > mainly used?
>
> And forgot to mention...what are the differences between PPP and Frame
> relay ?


Perhaps you could post the results of your own research so far and then
we can comment

From: answers on 10 Sep 2006 10:27
PPP and Frame Relay both are l2 protocols.
I know about PPP, about CHAP etc. I know a few things about FR
also..Like the packets are broken down into frames and transmitted, and
about DLCIs.. But I am not able to get the exact differences between
PPP and Frame Relay..

From: Merv on 10 Sep 2006 14:52
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
Ethernet (PPPoE).

A variation of PPP known as multi-link PPP (MLPPP) is quite popular for
loading balancing parallet circuit like T1's.

 |  Next  |  Last
Pages: 1 2
Prev: Cisco 7911 IP Phone with CCME 4 problem
Next: Up Arrow