Date: Fri, 1 Oct 1999 16:47:24 -0700 (PDT) From: Julian Elischer <julian@whistle.com> To: "Louis A. Mamakos" <louie@TransSys.COM> Cc: spork <spork@super-g.com>, freebsd-net@FreeBSD.ORG Subject: Re: PPPoE Message-ID: <Pine.BSF.3.95.991001164619.1613H-100000@current1.whistle.com> In-Reply-To: <199910012310.TAA09717@whizzo.transsys.com>
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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) > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-net" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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