From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-il1-x135.google.com (mail-il1-x135.google.com [IPv6:2607:f8b0:4864:20::135]) (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 A11183B2A4; Sun, 19 Apr 2020 15:58:26 -0400 (EDT) Received: by mail-il1-x135.google.com with SMTP id e8so483919ilm.7; Sun, 19 Apr 2020 12:58:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to :content-transfer-encoding; bh=/K9dc/YWr3oNezRDyYFO+D7vNGR9SwwIfLyylIvKTls=; b=MTB2MfxlM9v8vZMfGyPqbVGGCcSrYyzljX+LNsnYwNyrshcbmKGRHXDyfVwQp3InEy fGF4YNB5XJnXcIjpNfXRHnSYIrC32c4M1xpHWj5WtOZCRmVUWZtj+NnOviebboOjO8It L2nfM385d114qDSr8ZYcHwtyF7AVPlWOXGVJ5zwVq+9mzPJaLjgIJvRtPm4O5PP2nWEX hIOtUEEAWvqjIRUUDjKRG4GGCC5eHDP5nTxoOWjCG4ZItxR9zAClZgDo0lNV0NUnBzeH ZsBKBMkvOpaS8Ma/AEuR8kgMBhJ11rbxTfrfCX8KGjD/DRVQyirQKk3gBgzd+xfIVAY8 qoWQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to :content-transfer-encoding; bh=/K9dc/YWr3oNezRDyYFO+D7vNGR9SwwIfLyylIvKTls=; b=ZK5wCXbRBCGpzq7xUpa1XN04ZQMLUJIicgOYX1kg4j7jB3s4HyFhO4J5MJc3WK/tcs mK9p4t1XgLRHwp8DAIeoWnTkoGeZYj284QGcuOO5hlCAMS/TkqITYp3C0DunX5GV7EZX xvM2iFO8gpsL9eZcKHp+LCg0RkRRPFWdixoWNB2H1V2AD9lgEVs1xxAONEwl7fm5x3Qi +BboF/xY9xLAu2bJh2i+8pzsYe2d/qa9YFiw8MTEAeN2br1GHajaxWrxUmK4H91rDZiG zr63NzOuADXijNdPRbiNehf0i0UT/SLq4UG28mjdmmOjRRtU+Gq0iRHKoDxrVaBeq0t7 rkVg== X-Gm-Message-State: AGi0PuajAX5R0UwGTGi5HoTlI+IezJN70WD/S9jw/FoIi+5XqFa1Bz/k YUtNnwzvdFCiVjKmcy9rhI0gvVUSfudBMsq8E5eAZo11Lgs= X-Google-Smtp-Source: APiQypKmK+uHWau3P8o8AWihAXD0zEfn7A4vOCyhtrXmGyr7IQZny5x1i0QRqTQDwLySKc747K/2cCgvCyavRbqK11I= X-Received: by 2002:a92:8e50:: with SMTP id k16mr13385502ilh.45.1587326305755; Sun, 19 Apr 2020 12:58:25 -0700 (PDT) MIME-Version: 1.0 From: Dave Taht Date: Sun, 19 Apr 2020 12:58:14 -0700 Message-ID: To: Cake List , bloat Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: [Bloat] zoom traffic analysis 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: Sun, 19 Apr 2020 19:58:26 -0000 I did take apart a bit of zoom traffic the other day, over two hops of fq_codel'd wifi to the nudome from comcast. It does appear they put voice and video on separate tuples, both multiplexing over port 8801. Over roughly a 10ms interval with a redundant packet. Or: it could be rtsp information or some other sort of control traffic. no diffserv markings are used. either way, our fq is going to kick in here, and that's interesting. It's also really remarkable how low bandwidth videoconferencing is and how good the framerate is, nowadays. even the video flows are really well paced out. (note that they "should" be for stuff coming from the internal, and *might* be from stuff coming from them due to the sideffects of using fq_codel on inbound shaping) cap here: http://flent-fremont.bufferbloat.net/~d/zoom2.cap I do miss the days where traffic like this wasn't so encrypted! --=20 Make Music, Not War Dave T=C3=A4ht CTO, TekLibre, LLC http://www.teklibre.com Tel: 1-831-435-0729