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Date:      Sun, 3 Oct 1999 16:01:42 -0400 (EDT)
From:      spork <spork@super-g.com>
To:        Julian Elischer <julian@whistle.com>
Cc:        "Louis A. Mamakos" <louie@TransSys.COM>, freebsd-net@FreeBSD.ORG
Subject:   Re: PPPoE 
Message-ID:  <Pine.BSF.4.00.9910031557440.3189-100000@super-g.inch.com>
In-Reply-To: <Pine.BSF.3.95.991001164619.1613H-100000@current1.whistle.com>

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This is from a company that sells win/mac/linux PPPoE implementations to
ISP's (I came here after browsing the linux source on Sympatico's
website).  Seems like a decent list of links:

http://www.nts.com/library/tlpppoe.html

There's a bit of info from sympatico at:

http://www.hse.sympatico.ca/en/community/download.htm

Charles

On Fri, 1 Oct 1999, Julian Elischer wrote:

> 
> 
> On Fri, 1 Oct 1999, Louis A. Mamakos wrote:
> 
> > > It seems more and more ADSL providers in the US are moving from bridged
> > > IP over ethernet to PPP over Ethernet as they dump whatever clunky
> > > solutions they started with and move to the RedBack "subscriber management
> > > system".  The idea it seems is to simulate the familiar dialup connection.
> > > This lets you hand out dynamic addresses, dump idle users, discourage
> > > servers, track usage, hamper NAT, and (the relevant part) discourage
> > > people from connecting with anything but "supported" OS's.
> > 
> > Uh, as one of the folks responsible for driving PPPoE development, I can
> > assure that the last part of your remark wasn't one of the goals we had.
> > It was, in fact, time-to-market given the existing bridged-ethernet
> > capable hardware out there.  It was also to support simultanous connections
> > to different service providers, and with different levels of service.  Think
> > low-end, consumer user vs. work-at-home teleworkers.  Why shouldn't they
> > be able to use the same ADSL pipe to support concurrent access to both
> > e.g., AOL  for the kids (that you're paying for yourself) AND 
> > higher-performance
> > access that your employer is paying for.
> > 
> > > Is there anyone actively working on PPPoE for FreeBSD?  I don't like the
> > > whole concept of wrapping so many frames inside each other, but it would
> > > be a shame if a bunch of folks with FBSD gateways for their home nets had
> > > to move to Win98 and its' ICS (Internet Connection Sharing).  Blech.
> > > 
> > > Could user/kernel ppp be modified?  How does this work anyhow?  Is there
> > > an ethernet frame type for PPPoE?  How close do you have to get to the
> > > ethernet driver to send PPPoE frames? Can any existing PPP implementations
> > > easily handle a few megabits/sec on older hardware?
> > 
> > We did a proof-of-concept implemention starting with the user-mode PPP
> > daemon and using BPF to put frames on and off the wire, with no kernel
> > changes.  This happened to be done on a BSDI system, but that's really
> > not at all significant.
> > 
> > I observed once before that the Whistle netgraph stuff is an ideal 
> > sort of solution for this type of problem where you're really concerned
> > about performance, and don't want to context switch into a user process
> > for each packet.
> 
> I hope to start work on a netgraph/PPPoE module in the next day or so..
> do you have any suggested reading?
> 
> > 
> > louie
> > (aka louie@UU.NET)
> > 
> > 
> > 
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> > 
> 
> 
> 
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