Start with 1661 -> PPP
1331 The Point-to-Point Protocol (PPP) for the Transmission of Multi-protocol
Datagrams over Point-to-Point Links
1332 IPCP (N/w Control Protocol)
1333 PPP Link Quality Monitoring
1334 PPP Authentication Protocols.
1994 PPP Challenge Handshake Authentication Protocol (CHAP)
You know, I have been wondering about cable modems and their analog
usage...:-)
- Original Message -
From: "Lloyd Wood" <[EMAIL PROTECTED]>
To: "Bill Cunningham" <[EMAIL PROTECTED]>
Cc: "ietf" <[EMAIL PROTECTED]>
Sent: Wednesday, June 26, 2
*> From [EMAIL PROTECTED] Wed Jun 26 12:55:35 2002
*> X-Authentication-Warning: ietf.org: majordom set sender to [EMAIL PROTECTED]
using -f
*> From: "Bill Cunningham" <[EMAIL PROTECTED]>
*> To: <[EMAIL PROTECTED]>
*> Subject: PPP RFCs
*> Date: Wed, 26 Jun 2002 15:40:23 -0400
*> M
Start with RFC 1661, which obsoletes 1548.
-Original Message-
From: Bill Cunningham [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, June 26, 2002 9:40 AM
To: [EMAIL PROTECTED]
Subject: PPP RFCs
Are there RFC's or drafts on the various LCP's that PPP uses or the Network
Control Protocol o
*> switching but a rose by any other name ...). So all of these, including
*> PPP, exist at layers 1-2 in the TCP/IP model (link, network, internetwork,
*> transport, application) ...
*>
(catching up on old email)
Note that this is not the common-accepted definition of the Internet
Brian Lloyd wrote:
>
> At 11:59 PM 3/6/2002, you wrote:
> > > It has been many years since I argued this with Karl Fox back when
> > > he chaired the L2TP WG.
> >
> >Karl chaired only the pppext WG.
>
> Then at the time L2TP or the precursor discussions were done within the
> PPPEXT WG becaus
That top-layer-calls-next-layer etc ad-nauseam model seems to have been one
of the original ideas for how to implement a stack.
Actual current implementations do all kinds of wierd stuff, but mostly pass
around accumulating collections of buffers; so the payload buffer doesn't
get copied to ac
At 11:59 PM 3/6/2002, you wrote:
> > It has been many years since I argued this with Karl Fox back when
> > he chaired the L2TP WG.
>
>Karl chaired only the pppext WG.
Then at the time L2TP or the precursor discussions were done within the
PPPEXT WG because the discussion was with Karl.
> > At
Brian Lloyd wrote:
>
> At 02:42 AM 3/6/2002, you wrote:
> >I don't see how classification of PPP as a layer 2, layer 3, or any other
> >layer
> >would have had an affect on how we designed L2TP (perhaps it would have
> >affected
> >the name of the protocol though).
>
> PPP actually consists of
At 02:42 AM 3/6/2002, you wrote:
>I don't see how classification of PPP as a layer 2, layer 3, or any other
>layer
>would have had an affect on how we designed L2TP (perhaps it would have
>affected
>the name of the protocol though).
PPP actually consists of two distinct and separate sets of pro
WARNING : this answer will be very basic. My intention is not to go deep into the
details but to give a short answer.
Suppose you have an Operating System supporting TCP/IP, whatever applications you run.
Suppose you have a modem and you use PPP to talk to a remote server.
Then data coming from
Brian Lloyd wrote:
>
> At 03:12 AM 3/4/2002, you wrote:
> >I couldn't say it shorter and more clearly than Vint : PPP does NOT belong
> >to the TCP/IP protocol suite.
>
> Other than it was designed for IP and the other stuff came along for the
> ride. PPP was a relatively early product of the
Here is a question that will tax your synapes to bursting point!
How is PPP and TCP/IP libs "wired" together? Like, DO I (OSI 8) call TCP
and it calls IP and down the
chain till it spills over and gets real physical (OSI 1)? I am confused.
At 10:02 AM 3/5/02 -0500, you wrote:
>whoa, it's in t
are bitstreams sent
at that level. BTW I have 56K dial-up no ISDN or DSL.
- Original Message -
From: "Brian Lloyd" <[EMAIL PROTECTED]>
To: "TOMSON ERIC" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Monday, March 04, 2002 11:49 AM
Subject: RE: PPP
At 03:12 AM 3/4/2002, you wrote:
>I couldn't say it shorter and more clearly than Vint : PPP does NOT belong
>to the TCP/IP protocol suite.
Other than it was designed for IP and the other stuff came along for the
ride. PPP was a relatively early product of the IETF and specifically
designed f
supported.
If I had to go deeply into such details, my answer would have been too long - and out
of purpose.
Hope you understand the need for basic ABC and don't only tolerate complex literature.
:)
-Original Message-
From: Brian Lloyd [mailto:[EMAIL PROTECTED]]
Sent: lundi 4 mars 2002 1
Layering dogma get all confused and convoluted when faced with
engineering ingenuity. At what layer is ATM in the old Cells
in Frames spec? Or PPP when running ppp sessions over TCP?
Or over MPLS frames over PPP (over TCP)? Or?
PPP is a layer below the one it serves, and a layer above the
o
I couldn't say it shorter and more clearly than Vint : PPP does NOT belong to the
TCP/IP protocol suite.
It's a Layer 2(*) protocol, intended to carry multiple Layer 3 protocols (like IP,
IPX,...) over a point-to-point connection (like PSTN, ISDN,...).
PPP succeeded SLIP by bringing extended f
IP is encapsulated in PPP for all practical purposes. PPP can support
multiple protocols on a single point to point link in the same way
ethernet can support multiple protocols
vint
At 08:01 AM 3/1/2002 -0500, Bill Cunningham wrote:
>Is IP actually encapsulated in PPP, or is PPP and IP sent out a
]>; "Bill Cunningham"
<[EMAIL PROTECTED]>; "Brian Lloyd" <[EMAIL PROTECTED]>
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:
>
> sm
CP? I posted this
>question on the PPP mailing list with less familiaritive response than ietf
>general list.
>- Original Message -
>From: "Brian Lloyd" <[EMAIL PROTECTED]>
>To: "Bill Cunningham" <[EMAIL PROTECTED]>
>Cc: <[EMAIL PROTECTED
AIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Thursday, February 28, 2002 11:52 AM
Subject: Re: PPP
> At 03:55 AM 2/28/2002, you wrote:
> >In what layer is PPP in the TCP/IP suite?
>
> I have read some of the other responses and it reinforces my belief that
> most people don&#
> From: Vernon Schryver <[EMAIL PROTECTED]>
>> Anyway, simple protocols, like PPP and ARP (another canonical subject
>> of abuse) get reused in vile ways because the architecture which they
>> are components of is fundamentally under-provisioned with mechanisms.
> The archite
PROTECTED]
Subject: Re: PPP
> In what layer is PPP in the TCP/IP=
> =20suite?
Layer 2.71828
On Thu, 28 Feb 2002, Michel Gilbert wrote:
> Yep! Didn't read closely enough. Layer 2 in the OSI Reference Model, top of
> Layer 1 in TCP/IP - except for all of the places it appears elsewhere! :)
Ha ha - clear as mud, but probably spot on. Soon we'll have PPP making our
coffees.
PD
--
Paul D
> From: "J. Noel Chiappa" <[EMAIL PROTECTED]>
> Why are you surprised? Simple tools (e.g. a screwdriver) have always had the
> characteristic that they can be used for more things than complex ones (e.g.
> a mortise-cutting bit for a drill press - now there's a cool tool, BTW - but
> I digress).
> From: Brian Lloyd <[EMAIL PROTECTED]>
> When all you have is a hammer, everything looks like a nail.
> ...
> I must admit, we all laughed when Karl Fox indicated that he had
> implemented PPP over TELNET back in 1993 or so. We thought it a
> hilarious joke. I guess my bl
At 08:38 AM 2/28/2002, you wrote:
>On Thu, 28 Feb 2002, Bill Cunningham wrote:
>
> > In what layer is PPP in the TCP/IP suite?
>
>It's _everywhere_.
>
>What started out as a roughly HDLC-equivalent framing encap for IP
>with a checksum, intended for point-to-point links, has become deeply
>embedde
On Thu, 2002-02-28 at 12:20, Matt Crawford wrote:
> > In what layer is PPP in the TCP/IP=
> > =20suite?
>
> Layer 2.71828
I should have exp()ected that..
At 03:55 AM 2/28/2002, you wrote:
>In what layer is PPP in the TCP/IP suite?
I have read some of the other responses and it reinforces my belief that
most people don't understand PPP's relationship to IP and either the
5-layer (internet) or 7-layer (ISO) models.
PPP is really both the link and
Title: RE: PPP
Paul -
Yep! Didn't read closely enough. Layer 2 in the OSI Reference Model, top of Layer 1 in TCP/IP - except for all of the places it appears elsewhere! :)
How's THAT for clarity?
/Michel
-Original Message-
From: Paul Day [mailto:[EMAIL PROTEC
> In what layer is PPP in the TCP/IP=
> =20suite?
Layer 2.71828
On Thu, 28 Feb 2002, Michel Gilbert wrote:
> It is essentially a Data Link Layer protocol, operating at Layer 2.
Bill was after where it fits into the TCP/IP model. I think you've got
that mixed up with the OSI model? :)
Layer 2 under the TCP/IP model is the "Internet" layer, which corresponds
t
PPP is
a link layer protocol based on the TCO/IP model.
In the
OSI model, PPP spans Data link and Network layer.
Hope
this helps.
Regards,
Paul
-Original Message-From: Bill Cunningham
[mailto:[EMAIL PROTECTED]]Sent: Thursday, February 28, 2002 6:55
AMTo: [EMAIL PROTECTED]Su
Bill -
It is essentially a Data Link Layer protocol, operating at Layer
2.
/Michel
-Original Message-From: Bill Cunningham
[mailto:[EMAIL PROTECTED]]Sent: Thursday, February 28, 2002 6:55
AMTo: [EMAIL PROTECTED]Subject: PPP
In what layer is PPP in the TCP/IP
suite?
On Thu, 28 Feb 2002, Bill Cunningham wrote:
> In what layer is PPP in the TCP/IP suite?
The top of Layer 1 - it's part of the "Network Interface" layer of the
TCP/IP conceptual model.
PD
--
Paul Day Web: www.bur.st/~bonfire
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