From owner-freebsd-isp Sun Jan 4 21:38:48 1998 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id VAA04527 for isp-outgoing; Sun, 4 Jan 1998 21:38:48 -0800 (PST) (envelope-from owner-freebsd-isp) Received: from ns2.cetlink.net (root@ns2.cetlink.net [209.54.54.20]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id VAA04522 for ; Sun, 4 Jan 1998 21:38:45 -0800 (PST) (envelope-from jak@cetlink.net) Received: from hot1.auctionfever.com (ts1-cltnc-23.cetlink.net [209.54.58.23]) by ns2.cetlink.net (8.8.5/8.8.5) with SMTP id AAA20747 for ; Mon, 5 Jan 1998 00:38:43 -0500 (EST) From: jak@cetlink.net (John Kelly) To: freebsd-isp@freebsd.org Subject: Re: PPPD terminal server on FreeBSD, NATD Date: Mon, 05 Jan 1998 06:39:32 GMT Message-ID: <34b07d97.643666@mail.cetlink.net> References: <34b02cb1.200036@mail.cetlink.net> In-Reply-To: <34b02cb1.200036@mail.cetlink.net> X-Mailer: Forte Agent 1.01/16.397 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by hub.freebsd.org id VAA04523 Sender: owner-freebsd-isp@freebsd.org X-Loop: FreeBSD.org Precedence: bulk On Mon, 05 Jan 1998 01:04:56 GMT, jak@cetlink.net (John Kelly) wrote: >>> >> I'm doing some simple testing to see if FreeBSD is feasible as a >>> >> terminal server. My first test of 2.2.5-stable, using only two ports >>> >> simultaneously, indicates there is considerable efficiency loss due >>> >> to transmit underruns. >I ran a another test with 2.2.2-release, a different machine, and a >different multiport serial card. Although I got the same result, I >learned something new. >So NATD seems to be causing the efficiency loss. Whoops! After more testing, NATD is not causing any problem. My test client on the second port seems to have been misconfigured, running an untouchable piece of software which purports to be an OS. I changed that client to FreeBSD and the efficiency loss disappeared. I still don't know yet if FreeBSD will scale to a 32 port terminal server with the SIO driver and cheap multiport serial cards like the one I use, but with no efficiency loss on 2 ports, it has some hope. John