From owner-freebsd-net@freebsd.org Wed Jul 24 20:36:11 2019 Return-Path: <owner-freebsd-net@freebsd.org> Delivered-To: freebsd-net@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id CF98BB8140 for <freebsd-net@mailman.nyi.freebsd.org>; Wed, 24 Jul 2019 20:36:11 +0000 (UTC) (envelope-from darkfiberiru@gmail.com) Received: from mail-oi1-x232.google.com (mail-oi1-x232.google.com [IPv6:2607:f8b0:4864:20::232]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 9D2687333B for <freebsd-net@freebsd.org>; Wed, 24 Jul 2019 20:36:10 +0000 (UTC) (envelope-from darkfiberiru@gmail.com) Received: by mail-oi1-x232.google.com with SMTP id g7so35997730oia.8 for <freebsd-net@freebsd.org>; Wed, 24 Jul 2019 13:36:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=hiPoMpKraOdxtQNOLbxU6+tKyJx5aYSzsC//k610QNk=; b=PrhafPgTVKPRjqs8uIf9m1WM5SQHYvnBRnc4tpgtbsVitLSVZpUza74o8qc8U+W5hS 3DdWQq3dd9zuGXFeEHzaGRDzHdbe8xy+5oFDFS03f/QHrs+BdygBV95CjOjM3OfKK6GJ ttU+kTkNCiFawuqRyNl4U+YD5IvUPOoCXXrErWjNY80zfHaManJNTryrGPOut4faTliH VKD/jnBVYCTQAnQCQd2wtAeCgfpnQujTcISgBWZNFzsH18tHNp6teJKTmPQbbSjcAnuc 7YEHTFX9AyLHwt0KbTf5IIBXTuorvjIofjrgRZlm1mFlpsDWgTBQd4cXTqdW+GAAJ1mD SOKQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=hiPoMpKraOdxtQNOLbxU6+tKyJx5aYSzsC//k610QNk=; b=kdev5eHxMrLqPJQqdbxi6x7kS5AWHz+/M3BEwhWPmWrBQPb3Uv2PfZdd/D+63jLdYd W24cAX04MKTQ1p9i44Jm2PHe34DI6VJwx6mc3q4hnnPS5m5a6L/EVYhW8D3K1h1OVn0u P8v3M/1DJNxAHPNafSeaPNMMm9Qd0ApFdmctDyLwh7yJKw3kx/rUUuucxB/veIxUQkH0 Cei+Sz9wdax3L4wOFQCS1Ou0IkN/TjCfEQrrdxCf57JjG+/R2te78/zm+gco8Qksbqq1 +4IE22jDT8z0Mgg0npyfGQzEM7gAoFkTBqbGricFyEb2Mh3Z/xG3dW0n3pVucuTePg/m +x5w== X-Gm-Message-State: APjAAAUcNkm6HlWArecbcUP/UM9dpcbr6cu4KR9PEL27BilPDjUoTt1b qmXTyndJKlkMIcIBdIkBpY/mo0KTyrYyVHxAC1k= X-Google-Smtp-Source: APXvYqzrJGuP5wm3po72hwBSQsQMzDKzt/gVIFzTjEJdnA1vPnNVOU7XVWe4Q1pLwEsC3hXkltSAaqydKQNzRfQ5lYY= X-Received: by 2002:aca:886:: with SMTP id 128mr42359069oii.73.1564000569184; Wed, 24 Jul 2019 13:36:09 -0700 (PDT) MIME-Version: 1.0 References: <CAAhM9JGqjObM3E9GqzGWsm4-U8RDRJNRQ8PWy_B_4gRvbE0cVw@mail.gmail.com> In-Reply-To: <CAAhM9JGqjObM3E9GqzGWsm4-U8RDRJNRQ8PWy_B_4gRvbE0cVw@mail.gmail.com> From: Nick Wolff <darkfiberiru@gmail.com> Date: Wed, 24 Jul 2019 16:36:28 -0400 Message-ID: <CACxAneAoBWaTSfTHXt1JoqOHvz0FOmTdvmVPN-1+yZS+3ruK=Q@mail.gmail.com> Subject: Re: does qlnxe 100G support DAC splitter? To: Ronald Khoo <ronald@taufilms.com> Cc: freebsd-net <freebsd-net@freebsd.org> X-Rspamd-Queue-Id: 9D2687333B X-Spamd-Bar: ----- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=PrhafPgT; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of darkfiberiru@gmail.com designates 2607:f8b0:4864:20::232 as permitted sender) smtp.mailfrom=darkfiberiru@gmail.com X-Spamd-Result: default: False [-5.92 / 15.00]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; FREEMAIL_FROM(0.00)[gmail.com]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; MX_GOOD(-0.01)[cached: alt3.gmail-smtp-in.l.google.com]; NEURAL_HAM_SHORT(-0.97)[-0.966,0]; FROM_EQ_ENVFROM(0.00)[]; IP_SCORE(-2.94)[ip: (-9.14), ipnet: 2607:f8b0::/32(-3.09), asn: 15169(-2.43), country: US(-0.05)]; MIME_TRACE(0.00)[0:+,1:+]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; DWL_DNSWL_NONE(0.00)[gmail.com.dwl.dnswl.org : 127.0.5.0]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-net@freebsd.org]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2.3.2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; RCVD_TLS_LAST(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; SUBJECT_ENDS_QUESTION(1.00)[] Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org> List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-net>, <mailto:freebsd-net-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net/> List-Post: <mailto:freebsd-net@freebsd.org> List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help> List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-net>, <mailto:freebsd-net-request@freebsd.org?subject=subscribe> X-List-Received-Date: Wed, 24 Jul 2019 20:36:11 -0000 Ronald, If you don't need to do both at the same time or have a dual port 100g nic you should be able to use adapters like this https://www.fs.com/products/75320.html to go from qsfp+ to sfp+ or the qsfp28 variant for 25g On Sun, Jul 21, 2019 at 10:40 AM Ronald Khoo <ronald@taufilms.com> wrote: > hi freebsd-net, > > two questions: > > a. does the qlnxe driver support treating one 100G port as four separate > 25G ethernet interfaces via a QSFP28 to 4 x SP25 DAC splitter cable? > > b. and does it work for one of those to be plugged into a 10G SFP+ switch? > > trying to figure out an upgrade path from 10G to 25G to 100G on a slot > constrained server -- a recent TYAN which only has one proprietary slot for > a high speed NIC and I'd like to be able to connect to both a current 10G > switch as well as a 100G switch in future (at 25 while migrating and then > at 100 once done). > > the alternative would be to buy a dual 10G NIC initially and then throw it > away when going to 100G -- I'm wondering if I can avoid that. > > thanks! > ronald > _______________________________________________ > freebsd-net@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" >