ppoe and dhcp

[Jonathan Hutchins]

PPPoE is usually used to provide authentication (you must log in to use your
connection), and as an easy way for SWB to do things like limit bandwidth
and filter services.  The one connection I've worked with won't pass an SSH
connection.

----- Original Message -----
From: "Gerald Combs" <gerald at ethereal.com>
To: "hanasaki" <hanasaki at hanaden.com>
Cc: <kclug at kclug.org>
Sent: Tuesday, May 28, 2002 8:46 AM
Subject: Re: ppoe and dhcp

> The PPPoE you get via a DSL connection is actually
> PPP-over-Ethernet-over-ATM.  Telcos (including SBC) use ATM to deliver
> data over a DSL line.  Ethernet is layered on top of that in order to give
> the user something they can handle with an inexpensive NIC.  PPP is
> layered on top of that to provide authentication and access control.
>
> To make a short answer long, PPPoE gives you an address the same way PPP
> over a dialup connection does - via IPCP.  It also lets the DSL provider
> force you to authenticate using CHAP or PAP.
>
> More info on PPPoE can be found at:
>
>   http://www.ietf.org/rfc/rfc2516.txt
>   http://www.dslreports.com/information/kb/PPPoE
>
>
> Personally, I think PPPoE is a crock.  The PPP layer reduces your
> effective MTU size causing problems in many cases, and the added layers
> makes things harder to troubleshoot.  Other technologies exist (PPPoA,
> Long-Reach Ethernet) that offer the same bandwith and price advantages
> without the needless complexity.
>
>
> On Mon, 27 May 2002, hanasaki wrote:
>
> > Does PPOE give you an IP addy?  Is it just a diff way to do dhcp?
> >
> >
> >
> >
>
>
>