From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from web.heavenlysanctuary.com (web.heavenlysanctuary.com [74.80.207.230]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 557663B2A4 for ; Wed, 12 Jan 2022 19:40:55 -0500 (EST) Received: from [192.168.10.101] (unknown [47.145.161.70]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by web.heavenlysanctuary.com (Postfix) with ESMTPSA id 4JZ5Ff2VcHz5DlX4 for ; Wed, 12 Jan 2022 16:40:54 -0800 (PST) Message-ID: <334460f8-89e7-0ca8-75b8-edbdf30e7961@heavenlysanctuary.com> Date: Wed, 12 Jan 2022 16:40:54 -0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.4.1 Content-Language: en-US To: bloat@lists.bufferbloat.net References: From: Marco Belmonte In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-1.0 required=3.0 tests=ALL_TRUSTED,SHORTCIRCUIT shortcircuit=ham autolearn=disabled version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on web.heavenlysanctuary.com Subject: Re: [Bloat] ONTs and ITU - T G.988 X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Jan 2022 00:40:55 -0000 Dave, Can you describe to me what under buffered would look like? Let's say I'm playing Rocket League on a Frontier FIOS connection... When a situation arises where the connection is under buffered you might see _____. A lot of interrupts being generated? connections timing out? lag? I'm guessing that many of the same symptoms that accompanying buffer bloat also manifest themselves with buffer bleed? Marco On 1/12/2022 3:42 PM, Dave Taht wrote: > Up until this point I haven't cared all that much about fiber, as most > of my observations were that it had "reasonable" buffering and all I > could hold in my head was the 802.11 standards. Since cablemodems are > well on their way to being fixed, wifi is looking good, and I recently > came across an ONT that was actually underbuffered, my holiday reading > consisted of pounding through a ton of fiber specs like this one: > > https://www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-G.988-201711-I!!PDF-E&type=items > > There's a lot of promising info in this spec starting from page 104. > > My 1st question is - are there any ONTs that actually do do pause > frames? Or providers that configure for them? > > My second is - what is a cheap way to setup a lab to emulate a good, > common, version of gpon e2e? > > Third - what OS do these things run? Who makes a "good" one? >