From owner-freebsd-questions Mon Dec 24 14:30: 8 2001 Delivered-To: freebsd-questions@freebsd.org Received: from lists.blarg.net (lists.blarg.net [206.124.128.17]) by hub.freebsd.org (Postfix) with ESMTP id E82D137B417 for ; Mon, 24 Dec 2001 14:30:04 -0800 (PST) Received: from thig.blarg.net (thig.blarg.net [206.124.128.18]) by lists.blarg.net (Postfix) with ESMTP id 9733DBCFB; Mon, 24 Dec 2001 14:30:04 -0800 (PST) Received: from localhost.localdomain ([206.124.139.115]) by thig.blarg.net (8.9.3/8.9.3) with ESMTP id OAA02297; Mon, 24 Dec 2001 14:30:03 -0800 Received: (from jojo@localhost) by localhost.localdomain (8.11.6/8.11.3) id fBOMU8e29401; Mon, 24 Dec 2001 14:30:08 -0800 (PST) (envelope-from swear@blarg.net) To: "111" Cc: Subject: Re: any difference between cable(TV) and phone line high speed internet References: <200112211956.fBLJu1d16378@ptavv.es.net> <01d501c18c93$1a0c9d40$ec41d5cc@daleco> From: swear@blarg.net (Gary W. Swearingen) Date: 24 Dec 2001 14:30:08 -0800 In-Reply-To: <01d501c18c93$1a0c9d40$ec41d5cc@daleco> Message-ID: Lines: 39 User-Agent: Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.1 (Cuyahoga Valley) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG "111" writes: > From: Gary W. Swearingen > Sent: Sunday, December 23, 2001 12:07 PM > Subject: Re: any difference between cable(TV) and phone line high speed > internet > > > > > Well, the interconnect to your desk is not shared, but congestion can > > > occur anyplace other than that and it's all shared from that point. That form of quoting is wasteful and makes it look like I wrote that. I didn't. > Telcos/Cablecos use ATM to guarantee high bandwidth and uptime. Their > modems use PPPoATM (or PPPoE) 'cuz that's what they're set up to do > (IMHO, I may very well be wrong.) I thought that some cable users have to actually use PPPoE-smart software on their computers, whereas the PPPoATM is only in the modem and TELCOM. Anyone know for sure? > >Some ISPs configure the modem as a bridge so it looks to > > your system like one of your ISP's NICs extended to your site. > > > That's basically the way my cable is set up. That's where the > line about 'shared bandwidth' (or 'subnets', below) comes in. I don't think so. I think it was about the bandwidth between your modem and your ISP and whether or not your modem is configured as a router or bridge or is on a subnet is not related. My TELCO could (and might have in some places and times) run a dedicated wire between my "Central Office" (where my modem wire ends) and my ISP. But mine uses an ATM network instead. Either way (as I understand it), they can guarantee bandwidth without "sharing", even when my ISP had me using bridging so my modem looked like one NIC on a subnet. It was on a subnet, but only at my ISP where they have it attached via some high-speed network to the Internet. It's similar for the router-mode modem. With Cable, the line between modems and the cableco equivalent of a Central Office is shared. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message