Yes there is a limit on how slow of a processor one can use with an LRP.  I am using Eigerstien2beta pppoe beta v.0.4 from Kenneth Hadley on a 386 DX board running a Cyrix 486 DLC 40 mhz chip and the PPPoE is limited to about 500kbps down load.  The speed limit has to do with the way pppoe sends the packets, the processor must recombine them.  Also according to Ken Hadley on anything less than a 486 DX4 100mhz you will notice a speed dive with PPPoE.
Robert Chambers

Jeff Newmiller wrote:
[EMAIL PROTECTED]">
On Sat, 13 Oct 2001, Mark Plowman wrote:

I have recently been encouraging my less Linux-centric colleagues to
use LEAF as a fire-wall for their personal dial-up/cable/ADSL Internet
connections, having done the same with the company ISDN and ADSL
connections.

Yesterday the trainee expressed interest, explained that he had cable
access and asked about the hardware requirements. I explained that
almost anything he could lay his hands on would be sufficient and he
then asked "but wouldn't that (a 386) perform *too* slowly?". I
reassured him that that would be OK and sent him off after an
introductory talk about LEAF with both an Eigerstien and a Dachstein
floppy.

Once at home I decided to put my "money where my mouth was" and
*downgraded* my 486 DX2-80 with a 386 SX-33! I had to (of course)
replace the kernel on my ISDN Eigerstien with a non-FPU example, but
it all works a treat! What I do notice is that during start-up the
unpacking of the Linux Kernel and initial ram disk images take an
*age*!

I found that there is a lower limit... the performance of a 386-33
on a pppoe setup was significantly lower than no router. However, for
static routing it should be okay, and almost any true 486 should keep up
with pppoe.

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