From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.lang.hm (unknown [66.167.227.145]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id C37D13CB41; Sat, 25 Mar 2023 20:28:49 -0400 (EDT) Received: from dlang-mobile (unknown [10.2.2.69]) by mail.lang.hm (Postfix) with ESMTP id B7598180775; Sat, 25 Mar 2023 17:28:48 -0700 (PDT) Date: Sat, 25 Mar 2023 17:28:48 -0700 (PDT) From: David Lang To: Robert McMahon cc: David Lang , dan , Rpm , Frantisek Borsik , Bruce Perens , libreqos , Dave Taht via Starlink , bloat In-Reply-To: <8f7d92bd-3b35-4726-b733-978b322713ad@rjmcmahon.com> Message-ID: <11pp1noo-5472-1n15-24ro-ross90rr195n@ynat.uz> References: <1d6c10c9a692bb3f2869fb1b40fa449a@rjmcmahon.com> <20230321001019.GA4531@sunf68.rd.bbc.co.uk> <4295238B-FA57-49B6-B57B-78FFB2603B90@gmx.de> <8301258b8fffa18bd14279bff043dd03@rjmcmahon.com> <43bcbc338aecb44a1bef49489ab6f9c8@rjmcmahon.com> <60e70b637df76234639780ab08f25d82@rjmcmahon.com> <9edd011a1a6615470b34e0837896a15f@rjmcmahon.com> <0551d5fe-e1be-48c8-be36-c4800a12e5de@rjmcmahon.com> <8f7d92bd-3b35-4726-b733-978b322713ad@rjmcmahon.com> MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset=US-ASCII Subject: Re: [Rpm] [Bloat] [Starlink] On fiber as critical infrastructure w/Comcast chat X-BeenThere: rpm@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: revolutions per minute - a new metric for measuring responsiveness List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 26 Mar 2023 00:28:49 -0000 No, the primary cost (other than laying the fiber) is in the electronics to route the packets around once they leave the optics, and the upstream bandwith and peering to other ISPs. laying the fiber is expensive, optics are trivially cheap in comparison, but while the theoretical bandwidth of the fiber is huge, that's only for the one hop, once you get past that hop and have to deal with the aggregate bandwidth of multiple endpoints, something has to give. David Lang On Sat, 25 Mar 2023, Robert McMahon wrote: > The primary cost is the optics. That's why they're p in sfp and pay go > > Bob > > On Mar 25, 2023, 4:35 PM, at 4:35 PM, David Lang wrote: >> On Sat, 25 Mar 2023, Robert McMahon via Bloat wrote: >> >>> The fiber has basically infinite capacity. >> >> in theory, but once you start aggregating it and having to pay for >> equipment >> that can handle the rates, your 'infinite capaicty' starts to run out >> really >> fast. >> >> David Lang >> >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> Bloat mailing list >> Bloat@lists.bufferbloat.net >> https://lists.bufferbloat.net/listinfo/bloat >