Is IP actually encapsulated in PPP, or is PPP and IP sent out at the same time at different protocol layers? Kinda holding hands in a sense to each other. ----- Original Message ----- From: "vint cerf" <vinton.g.cerf@wcom.com> To: "Christopher Evans" <teknopup@bigvalley.net>; "Bill Cunningham" <billcu@CITYNET.NET>; "Brian Lloyd" <brian@lloyd.com> Sent: Friday, March 01, 2002 7:16 AM Subject: Re: PPP > christopher, > > it is called tcp/ip because the encapsulation was read left to right > > so, for example: > > smtp/tcp/ip > telnet/tcp/ip > ftp/tcp/ip > http/tcp/ip > > and > > ip/ppp/ethernet > ip/ethernet > ip/ppp/dial-up > ip/ppp/dsl > > and so on > > the ordering is arbitrary, of course - we just picked "higher level protocol to the left" > as in "higher order bit to the left" as a way of presenting the protocol layers. > > vint cerf > > At 11:58 PM 2/28/2002 -0800, Christopher Evans wrote: > >Why do they call it TCP/IP ? that sound reversed. it should be > >IP/TCP-UDP as that makes sense in > >my head. > > >