Re: [Tofoo] FW: I-D Action: draft-zhou-li-vxlan-soe-01.txt

Tom Herbert <therbert@google.com> Tue, 20 May 2014 18:44 UTC

Return-Path: <therbert@google.com>
X-Original-To: tofoo@ietfa.amsl.com
Delivered-To: tofoo@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 4F6A71A0390 for <tofoo@ietfa.amsl.com>; Tue, 20 May 2014 11:44:10 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.029
X-Spam-Level:
X-Spam-Status: No, score=-2.029 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FM_FORGED_GMAIL=0.622, HTML_MESSAGE=0.001, RP_MATCHES_RCVD=-0.651, SPF_PASS=-0.001] autolearn=unavailable
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id IJXJ97t8Vtj9 for <tofoo@ietfa.amsl.com>; Tue, 20 May 2014 11:44:08 -0700 (PDT)
Received: from mail-ie0-x22e.google.com (mail-ie0-x22e.google.com [IPv6:2607:f8b0:4001:c03::22e]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 0FEF61A0731 for <tofoo@ietf.org>; Tue, 20 May 2014 11:43:59 -0700 (PDT)
Received: by mail-ie0-f174.google.com with SMTP id lx4so875419iec.5 for <tofoo@ietf.org>; Tue, 20 May 2014 11:43:59 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=BWsy3OOu/+0LKQiv0E93XhrxZ/mxphc0VFQ26skjdYs=; b=LDvw0n/rNFzvM7TeHz7JnZ2QKuIfaiMEjgjjXL8qPVJfwHw01ZV1amJae2H4eNepN/ RzjoQQ3FaSyoOF4rkTjI5ssvFZezBYdjRpcjv/OG3Pt8TRTireYRX514AIYD48GZwdOM ObaULaovxoTa2KK+EiVxQLCFDG9j8qw2hF8D6/x5lsC1i6YE2uachOs6hAYqYpvVzY8A 0TC2sZpKtCyJObIzTIYbtyg3tWfrr2vAXg5yvDVCyZ49IFw91g1XK3La0qWIAehOYqvT pEV0m6CH6VQJkoACv/oD8o1aSXb36AH3u786i+YN6xkcF19tdlI9FegOsQ0Y6Jkf7tD7 t4Aw==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type; bh=BWsy3OOu/+0LKQiv0E93XhrxZ/mxphc0VFQ26skjdYs=; b=KocweLNVJcJP1oEevOoPH7dJbJE2wPos5WkBymZrj4nocueM+9atRbolxjpf1Juui/ mIAB9SDiuII0gNFuRn0mC9jz1z6BA4TrAzWuZaGqpZn6w81Nu27iaOtf2UZAPh/mUXVO CvGFmCJN2log7WvgWA6/A/eXOpIcDylIWNJ8Q9JTXxzfWtqWy70+qE/cBUCZ7bYTyHr4 qsrNMkoLQaEVQK7qBHEWZDNUl/LccZ2gD9Wq+a8uTBVVR6MkgpeHL9123szUdqUVK3vH NPKuvuO7JZRifu4SIM8tjYo3/miayi/xSRWchyoAtAuP/VXaVPPTkwLTBHfBnqCWzLCR F2sQ==
X-Gm-Message-State: ALoCoQlDb3w/j9hWCz2CK80cpIJcApcl+FAevEG09dzCkWdI3htVqeNn88hRCCD9FKt0scPz7q18
MIME-Version: 1.0
X-Received: by 10.43.151.7 with SMTP id kq7mr12390286icc.78.1400611439068; Tue, 20 May 2014 11:43:59 -0700 (PDT)
Received: by 10.64.148.98 with HTTP; Tue, 20 May 2014 11:43:58 -0700 (PDT)
In-Reply-To: <9F56174078B48B459268EFF1DAB66B1A109C2DD3@DEN-EXDDA-S32.corp.ebay.com>
References: <20140502120923.9835.17537.idtracker@ietfa.amsl.com> <9F56174078B48B459268EFF1DAB66B1A109C2DD3@DEN-EXDDA-S32.corp.ebay.com>
Date: Tue, 20 May 2014 11:43:58 -0700
Message-ID: <CA+mtBx_CGvUb0jP724T-wBk=SJW3o1RjZQgTvcC+zVaFFK78mA@mail.gmail.com>
From: Tom Herbert <therbert@google.com>
To: "Zhou, Han" <hzhou8@ebay.com>
Content-Type: multipart/alternative; boundary=001a11c2d02e4b61ac04f9d9433d
Archived-At: http://mailarchive.ietf.org/arch/msg/tofoo/U1Ijpmrhy7tk25mX6gIR23g_Sn0
Cc: "draft-mahalingam-dutt-dcops-vxlan@tools.ietf.org" <draft-mahalingam-dutt-dcops-vxlan@tools.ietf.org>, "tofoo@ietf.org" <tofoo@ietf.org>, "nvo3@ietf.org" <nvo3@ietf.org>, "draft-zhou-li-vxlan-soe@tools.ietf.org" <draft-zhou-li-vxlan-soe@tools.ietf.org>, Erik Nordmark <nordmark@sonic.net>
Subject: Re: [Tofoo] FW: I-D Action: draft-zhou-li-vxlan-soe-01.txt
X-BeenThere: tofoo@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: "Discussion list for Tunneling over Foo \(with\)in IP networks \(TOFOO\)." <tofoo.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/tofoo>, <mailto:tofoo-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/tofoo/>
List-Post: <mailto:tofoo@ietf.org>
List-Help: <mailto:tofoo-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/tofoo>, <mailto:tofoo-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 20 May 2014 18:44:10 -0000

Hi Zou, a couple of questions inline.


On Mon, May 19, 2014 at 8:01 PM, Zhou, Han <hzhou8@ebay.com>; wrote:

> Hi,
>
> We have updated the VXLAN-SOE draft according to earlier comments. Now it
> is fully compatible with VXLAN-GPE. And some examples are added for better
> understanding


>
A prototype is also implemented here (patch based on Open vSwitch):
>
> https://github.com/hzhou8/openvswitch/commit/9a7deb8b432ce83a9c09d7d4ff85fa050f7dd2be
>
> netperf TCP_STREAM test result between a pairs of VMs on hosts with 10G
> interfaces:
>
> Before the change: 2.62 Gbits/sec
> After the change: 6.68 Gbits/sec
> Speedup is ~250%.
>
> Can you provide some more details on this benefit? It seems like plain
TSO/LRO that understands encapsulation should provide similar benefits when
going between hosts.

The patch attracted some interests in OVS community, but since this RFC
> draft is in very early stage so it is regarded as inappropriate by Jesse to
> apply the change to OVS tree.
> The discuss mail-thread:
> http://openvswitch.org/pipermail/discuss/2014-May/013981.html
> http://openvswitch.org/pipermail/discuss/2014-May/013898.html
>
> So we would like to request a review here by NVO3/TOFOO groups and VXLAN
> authors: is this VXLAN extension is worth formally put into VXLAN as a
> standard, so that more people can benefit from it?
>
> Could you get the same effect by setting larger MTUs on the overlay
network interface and relying in path MTU discovery when going over
physical network?


> Best regards,
> Han
>
> -----Original Message-----
> From: I-D-Announce [mailto:i-d-announce-bounces@ietf.org] On Behalf Of
> internet-drafts@ietf.org
> Sent: Friday, May 02, 2014 8:09 PM
> To: i-d-announce@ietf.org
> Subject: I-D Action: draft-zhou-li-vxlan-soe-01.txt
>
>
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
>
>
>         Title           : Segmentation Offloading Extension for VXLAN
>         Authors         : Han Zhou
>                           Chengyuan Li
>         Filename        : draft-zhou-li-vxlan-soe-01.txt
>         Pages           : 13
>         Date            : 2014-05-02
>
> Abstract:
>    Segmentation offloading is nowadays common in network stack
>    implementation and well supported by para-virtualized network device
>    drivers for virtual machine (VM)s. This draft describes an extension
>    to Virtual eXtensible Local Area Network (VXLAN) so that segmentation
>    can be decoupled from physical/underlay networks and offloaded
>    further to the remote end-point thus improving data-plane performance
>    for VMs running on top of overlay networks.
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-zhou-li-vxlan-soe/
>
> There's also a htmlized version available at:
> http://tools.ietf.org/html/draft-zhou-li-vxlan-soe-01
>
> A diff from the previous version is available at:
> http://www.ietf.org/rfcdiff?url2=draft-zhou-li-vxlan-soe-01
>
>
> Please note that it may take a couple of minutes from the time of
> submission
> until the htmlized version and diff are available at tools.ietf.org.
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>
> _______________________________________________
> I-D-Announce mailing list
> I-D-Announce@ietf.org
> https://www.ietf.org/mailman/listinfo/i-d-announce
> Internet-Draft<https://www.ietf.org/mailman/listinfo/i-d-announceInternet-Draft>directories:
> http://www.ietf.org/shadow.html
> or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
>