Both PPP and HDLC are encapsulation protocols on serial interfaces.But PPP
is better than HDLC in 2 main points:
1- PPP supports multiple network layer encapsulation (IP,IPX,AppleTalk,...)
while standard HDLC supports only IP encapsulation.[Cisco HDLC supports
multiple network layer encapsulation
Excellent point Preston. We can't forget multilink either. HDLC is also the
default encap for ISDN:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/dial
ts_c/dtsprt3/dcdbri.htm#xtocid771414
HTH
MikeN
Network Engineer
""Preston Kilburn"" wrote in message
[EMAIL PROTECTED]
One difference between PPP and HDLC is that PPP supports authentication from
PAP (password authentication protocol) and CHAP (Challenge Handshake
Authentication Protocol). I believe that PPP runs over ISDN and HDLC
doesn't (but don't quote me on that one, I'm not sure).
-P
Message Posted at:
ht
I agree. PPP is a non-proprietary protocol and HDLC is vendor specific. If
you are connecting to a non Cisco device, use PPP. If you are connecting 2
Cisco devices, use HDLC. HDLC is the default encapsulation on Cisco routers.
HTH
MikeN
Network Engineer
""Brian"" wrote in message
[EMAIL PROTECT
one glaring difference, I have heard that Cisco's hdlc is modified so it
will not work with non cisco hdlc. PPP is PPP, you can attach a non Cisco
router running pp to it and be successful.
Brian "Sonic" Whalen
Success = Preparation + Opportunity
On Mon, 2 Jul 2001, friend wrote:
> Dear all
>
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