From owner-freebsd-isp Mon Nov 18 08:40:01 1996 Return-Path: owner-isp Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id IAA25861 for isp-outgoing; Mon, 18 Nov 1996 08:40:01 -0800 (PST) Received: from etinc.com (et-gw-fr1.etinc.com [204.141.244.98]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id IAA25853 for ; Mon, 18 Nov 1996 08:39:50 -0800 (PST) Received: from ntws (ntws.etinc.com [204.141.95.142]) by etinc.com (8.6.12/8.6.9) with SMTP id LAA29193; Mon, 18 Nov 1996 11:45:00 -0500 Date: Mon, 18 Nov 1996 11:45:00 -0500 Message-Id: <199611181645.LAA29193@etinc.com> X-Sender: dennis@etinc.com X-Mailer: Windows Eudora Version 2.0.3 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: Joe Greco From: dennis@etinc.com (dennis) Subject: Re: changed to: Frac T3? Cc: isp@freebsd.org Sender: owner-isp@freebsd.org X-Loop: FreeBSD.org Precedence: bulk >> >I don't see that happening here, at least locally. >> > >> >What I usually see is people going for T3, the circuit costs are not so >> >terribly different, and then the upstream provider meters bandwidth or >> >performs rate limiting of some sort. >> >> It is my understanding that the "rate-limiting" was flipping switches >> on the T3 CSU/DSU,which is fractional T3 (ie, adjusting the clock >> rate). That IS what I'm talking about! > >Rate limiting can be achieved in a number of ways. "Flipping switches on >the CSU/DSU" generally increases latency. It changes the clock rate, which effectively is Frac T3. > >One can rate limit in software, or alternatively simply meter usage and if >a threshold is exceeded, possibly raise the customer's rate. > >Hey, I'm not advocating it... I'm just saying what is currently done by >some. I dont know who the "some" are, but clock switching is pretty popular since a lot of HSSI products can do full T3. > >> >Sure. But your ISA based product is going to get a little slow handling >> >such high speeds, I would think? Maybe not. I would rather see a PCI >> >based solution, but that is just personal preference. >> >> Im not talking about ISA...... I said our PCI product will be able to do 32Mbs without modification....ISA is only 27-40Mbs...pretty hard to do 32Mbs full duplex on it. Dennis