From owner-freebsd-atm Thu Apr 5 9:43:28 2001 Delivered-To: freebsd-atm@freebsd.org Received: from mail.matriplex.com (ns1.matriplex.com [208.131.42.8]) by hub.freebsd.org (Postfix) with ESMTP id DCF3337B446 for ; Thu, 5 Apr 2001 09:43:25 -0700 (PDT) (envelope-from rh@matriplex.com) Received: from mail.matriplex.com (mail.matriplex.com [208.131.42.9]) by mail.matriplex.com (8.9.2/8.9.2) with ESMTP id JAA46143; Thu, 5 Apr 2001 09:43:03 -0700 (PDT) (envelope-from rh@matriplex.com) Date: Thu, 5 Apr 2001 09:43:03 -0700 (PDT) From: Richard Hodges To: Harti Brandt Cc: Alex Huppenthal , freebsd-atm@FreeBSD.ORG Subject: Re: ATM 4.3 and so on In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-atm@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Thu, 5 Apr 2001, Harti Brandt wrote: > On Wed, 4 Apr 2001, Richard Hodges wrote: > > RH>The third would be suitable for filling a DS3 (96000 cells/s), and the > RH>fourth could carry 10 mb/s of user data. Keep in mind that this is per > RH>VC, so if you have many going at once, you may still exceed your cell > RH>rate. I believe that the Fore card expects this rate info in network > RH>byte order, but if not, just remove the "htonl()" from the macro. There > RH>are many more possible values; let me know if you want the rest. > RH> > RH>And I haven't tested this myself, so if you give it a try, please let > RH>us all know how it works :-) > For what I know, this works only for a single VC. As soon as you try to > shape more than one VC, things go wrong. Three years ago a Fore engineer > told me, that they are going tu support shaping of up to 32 VC's 'in the > Windows driver'... :-( Well, that ^h^h^h^h^h is not good. From the rate control values, it did look like some kind of burst/skip system. Both values add up to 255. Could it be that the rate is actually the entire interface rate while that PDU is sent? That would make it complicated to handle multiple VCs, but not impossible. Unfortunately, the cell spacing would probably still be a problem. Yuck. I think I will stick with the ForeLE (IDT) cards. All the best, -Richard ------------------------------------------- Richard Hodges | Matriplex, inc. Product Manager | 769 Basque Way rh@matriplex.com | Carson City, NV 89706 775-886-6477 | www.matriplex.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-atm" in the body of the message