From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr1-x436.google.com (mail-wr1-x436.google.com [IPv6:2a00:1450:4864:20::436]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 9166C3B29E for ; Thu, 27 Oct 2022 12:16:45 -0400 (EDT) Received: by mail-wr1-x436.google.com with SMTP id l14so3123936wrw.2 for ; Thu, 27 Oct 2022 09:16:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=eBTAlqIWc6wfvbGXYxkXhPIG00PLlKA6PkO0zrwEB44=; b=NM4Ekobw0DIiRDO2unncQ/BNac9SYpU5+7IN2R+sHNA2xKSuLNnuVteWU0xhrWEWrO wnM4MPjIKZg4JBBuUycvHx+hqqCUGZpcN6CZyWqfeHq5vMv6TwQYHEB+RYYRf7TVy6Ua 8+u0jIecFf82o8GR271Ct8K6azbJ/urbnMjRcOch4DiaQvUOcMd3ZOpEh6TpZBQSDaZZ ZuEn5lAdVWkgGZcH0Rjy3bu7JFR70CBJCcTILAvVsa86cIooWIVFxCDF8XkVV2bqVBSK uS7/e4+s7Lij/mKmb/aMuZk+CE1i0T91xz+H9b94G3Qxuz/twEbf8QoBZsEKUV3IqCok Z4eg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=eBTAlqIWc6wfvbGXYxkXhPIG00PLlKA6PkO0zrwEB44=; b=pEMFc96bnb7ft13O0yPKq8mmBmDRjgs5nqgNtgeaFF33nd3M2SrZYBp3LG/JSUFYbB 9o50ep4LTnwg4VWzcpBl0Omj6x1xzeYNDLkR0G92Cc0GohgEZ0GYyD0a+EoPJUVgb9QO qtclXSgAhL2r//lD6K2qT8FVM4vUdVgE+Dz1nNE/sS/eDUEQo1rv1CATcnPHfJHerWY8 bJm7AO5QeVQhpLcY+ikQfuyligUMiowj7veh+HIi6bsckPoAuqS+tS/z6sODOIvmn5mR IqB1mhAfWZG2ifhQkxl1uWgwFNB0juGZnNU2xJs9aZQk52m2a1mTQvZjBPR9vfWwAmme 7BYA== X-Gm-Message-State: ACrzQf2JkJBWOI0oQUFzvBPWZqxbRwI/SolT0Opb09CAESmseBrNMaTr rs0ycbJU+XA9rZNlMFk8IAGJm1UDz/gF7CreEft5C8wdfV4= X-Google-Smtp-Source: AMsMyM4Sq8QN5nexuGRwGGPERJU4CtrTQoxdsYQCp+F32iShuovG4EUDZ4dF30Uzihsx85BGO212GFHCvheQfZqseHs= X-Received: by 2002:adf:f242:0:b0:236:68ef:e76e with SMTP id b2-20020adff242000000b0023668efe76emr16907331wrp.482.1666887404417; Thu, 27 Oct 2022 09:16:44 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Dave Taht Date: Thu, 27 Oct 2022 09:16:32 -0700 Message-ID: To: Zach Underwood Cc: LibreQoS@lists.bufferbloat.net Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: Re: [LibreQoS] Intro X-BeenThere: libreqos@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Many ISPs need the kinds of quality shaping cake can do List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 27 Oct 2022 16:16:45 -0000 On Thu, Oct 27, 2022 at 8:52 AM Zach Underwood via LibreQoS wrote: > > Dave recommended that I introduce myself to the list. Very nice to have you join us. There's been a lot of good traffic this month in the archives. Feel free to weigh in on any subject!!! > I am a wifi engineer at Whitesky which is owned by Realpage(yeah I know = about the lawsuit, that is not my group). We provide wifi and wired interne= t services at multiple family housing units. We have 600 sites in the USA a= nd service 135k units. With about 60% being student housing and avg install= 1200 APs a week. We range from a 20 unit complex to 5000 unit housing lik= e Harvard graduate housing. Our standard deployment is an example of a 200 = unit complex. We will order and install a 10gb wave or EPL from say level3,= atnt, uniti or another fiber company between the site and one of our 13 da= tacenters. In the datacenter we have IX connections, private peering and t= ransit connections. The fiber will connected to a mikrotik crs317_1g_16s_rm= to be used as a wan switch. Next we have a pair of ccr2004_1g_12s_2xs. What version of routerOS? I'm always at pains to say fq_codel was designed to run at line rate (cheaply), NOT shaped... and that the fq helps smooth out microbursts, and the aqm is way better than a drop tail queue, and am very enthused about the routeros 7.2 and later availability of it, but still struggle to convince people to "just turn it on" as we did in openwrt, linux, ios, etc so long ago. > Half of the site vlans are on one router and the other half on the other = router. All vlans on each router we NAT(for v4) to a single public ip(so tw= o public ip per site). We also dual stack for v6 and offer dhcpv6-pd on the= wired network. After the routers they connect to the nexus 3k core switch = and then 10gb links to 3750x that power APs in unit and service wired drops= . We do not rate limit or do any type of shaping. This is one of those things that then, gets done naturally, at the bottleneck point, which is most likely the wifi, but might, in a complex campus, be at the up or downlinks. I was deeply impressed by the ruckus spec (https://www.digitalairwireless.com/articles/blog/ruckus-networks-delivers-= their-first-802-11ax-product-and-it-is-a-beast)- which transliterated reads almost like a direct implementation of the stuff we described to them circa 2019? (2020?), in what I thought (then) was a disastrous meeting with their (now ex) CEO. (I refer to this story here: ) I'm dying to know what they actually implemented, notably if ECN is present or not. a packet capture of a ping -f -Q 1 -s 1440 from client to some other point ought (on a packet capture of the other point) show the CE bits set if they actually directly implemented the stuff from https://www.cs.kau.se/tohojo/airtime-fairness/ e.g. in wireshark: ipv6.tclass.ecn =3D=3D 3 or ip.dsfield.ecn =3D=3D 3 There's been a lot of research as to how much dscp or ecn "washing" actually existed across the internet. Most of it seemed to be coming from older, bigger ISPs. testing udp or tcp diffserv and ecn compliance e2e is also possible with the flent tool. Are the ecn bits preserved? (-Q 1 or -Q 2) I use irtt as a means to sweep the diffserv bits. >At all of our site we are doing a min of 1 ap in each unit. Some of our si= tes have paid extra and will get two ruckus r650 in say a 2 bedroom 2 story= townhouse. It is in general, my hope, more folk in dense deployments are using narrower channels. > > -- > Zach Underwood (RHCE,RHCSA,RHCT,UACA) > My website > advance-networking.com > _______________________________________________ > LibreQoS mailing list > LibreQoS@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/libreqos --=20 This song goes out to all the folk that thought Stadia would work: https://www.linkedin.com/posts/dtaht_the-mushroom-song-activity-69813666656= 07352320-FXtz Dave T=C3=A4ht CEO, TekLibre, LLC