Date: Sun, 4 Jan 1998 14:51:32 -0700 (MST) From: Atipa <freebsd@atipa.com> To: John Kelly <jak@cetlink.net> Cc: freebsd-isp@FreeBSD.ORG Subject: Re: [fbsd-isp] Designing for a very large ISP Message-ID: <Pine.BSF.3.91.980104144454.2651A-100000@dot.ishiboo.com> In-Reply-To: <34b30bdb.16044965@mail.cetlink.net>
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On Sun, 4 Jan 1998, John Kelly wrote: > On Sun, 4 Jan 1998 14:23:20 -0700 (MST), Atipa <freebsd@atipa.com> > 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. Next I'm going back to 2.2.2-release which > >> reputedly performed better, and I'll try the same test on a different > >> box to rule out hardware contributing to the problem. > > >What getty are you using? > > None whatsoever. This is a PPPD-only terminal server. My ttys > entries look like this: > > ttyd3 "/usr/sbin/pppd +pap -detach 57600" unknown on secure I use both pppd and userland PPP (ijppp), and I have gotten a bit more consistent results with ijppp. I have gotten very good results with ijppp running at 115200, like 35k / sec on web access logs (very highly compressible) using normal rockwell 33.6 modems (on 3 ports, local COM2-4). ijppp does quite well in conjunction with mgetty, since the newer mgetty autosenses PAP/CHAP, etc., and is very configurable. The portion I would be more worried about would be the multiport serial cards. I know Cyclades has some pretty cool PCI multiport boards, but it adds a whole diferent dimension of possible headaches. Anyone used these (or similar) multiport boards? Kevin
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