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Date:      Fri, 19 Jan 2001 21:48:27 -0500
From:      Mike Tancsa <mike@sentex.net>
To:        Joseph Thomas <jpt@networkcs.com>
Cc:        freebsd-atm@freebsd.org
Subject:   Re: HARP (lockups)  with hea
Message-ID:  <4.2.2.20010119214107.019dac30@marble.sentex.net>
In-Reply-To: <200101191712.LAA08022@us.networkcs.com>
References:  <4.2.2.20010118205333.01e8dcd8@marble.sentex.net>

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At 11:12 AM 1/19/2001 -0600, Joseph Thomas wrote:

>Couple of things:

First off, thanks very much for the great background and suggestions. It is 
very much appreciated!


[snip]

>         Yes, HARP does not attempt to do anything with determinging DMA

Playing around a little more with it, it seems the problem is only when 
sending a lot of data.  I installed LINUX on the other box and did the same 
tests with it against the other FreeBSD box and no lockups on the LINUX 
box. Only the FreeBSD box when sending.  I would have thought the lockup 
would be in either direction.  Strange.

>         - use Chuck's code;

I am going to give that a try for sure.  The other strange thing I ran 
into, is that I cant make the en driver talk to the LINUX box.  With HARP 
its no problem.  Anyone out there using the en driver to speak to LINUX ATM 
0.78 ?



The box's purpose is pretty simple: to peer with my upstream and run gated 
for now, zebra in perhaps a month.  If C.C's en driver works, I will run 
with it  see what happens. With FreeBSD to FreeBSD, I tried a range of 
network stress tests and didnt see a single problem, and got great 
pps.  The current 4700 is down to very little RAM remaining and will have 
to go sooner than later :-(

         ---Mike


--------------------------------------------------------------------
Mike Tancsa,                          	          tel +1 519 651 3400
Network Administration,     			  mike@sentex.net
Sentex Communications                 		  www.sentex.net
Cambridge, Ontario Canada			  www.sentex.net/mike



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