Re: [bess] BDF Election in EVPN VPWS Single-Active Multihoming
Muthu Arul Mozhi Perumal <muthu.arul@gmail.com> Fri, 22 March 2019 18:40 UTC
Return-Path: <muthu.arul@gmail.com>
X-Original-To: bess@ietfa.amsl.com
Delivered-To: bess@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 59673131451 for <bess@ietfa.amsl.com>; Fri, 22 Mar 2019 11:40:32 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.998
X-Spam-Level:
X-Spam-Status: No, score=-1.998 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com
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 wCWGruxaIi6I for <bess@ietfa.amsl.com>; Fri, 22 Mar 2019 11:40:30 -0700 (PDT)
Received: from mail-lj1-x234.google.com (mail-lj1-x234.google.com [IPv6:2a00:1450:4864:20::234]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id BE3FE131430 for <bess@ietf.org>; Fri, 22 Mar 2019 11:40:29 -0700 (PDT)
Received: by mail-lj1-x234.google.com with SMTP id l7so2888341ljg.6 for <bess@ietf.org>; Fri, 22 Mar 2019 11:40:29 -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=lKI2/OmxK2//nEoQsyiTfBq0u8kz7pIt1O14s6QCOIc=; b=NLe2K2rTTYL/qUCBtzAX/kx4RnE5UKM9ynJVnCxkoYyju/A/BTlsYb7NRxxyXHBZy/ dNW7wY2zgKQo2fLNh/NfUpeQ1BBNDmjae+O6Ay1Ahg+k8aKLCiAjkzIw2ujMybrke5tp FDEH1WEGTT25/D0jXnX7gG4a8sYtHMh7L77Ps8n59rik1sqMytjglbhcbyLWAt0Tkcwd lFESVZpo8KN1L/dcUxS2Rz4C+ZGQspMvwUCe3+7cBCOHqD3tXGQtH5yZK2whOnHXLLLY xgwO//4NZW7tfU37+YHqKlSG5nFgfoijHV9ggw55Uy0+oLD+y2klCrT+PAcQ0JDrUJsn Df4w==
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=lKI2/OmxK2//nEoQsyiTfBq0u8kz7pIt1O14s6QCOIc=; b=BKi0YZfb/3qwsxM6ekl3esHtMdmtOllDpIctSZJfm2/qhmlYU5ZtBsiQUZURqrrdnG bclY0x/q1aXc2hgD6+z6iTw62FnDsI8+uvbjoT3inj9FS2mf87GhZpYDEYgF4VpTBCKA qV50moDwzoUgwJ2rdHRWIyGqYf+odgLfvJmUuAefbIG0OeCWVgrj3vRuvTneaFZp2ewT bOZT0Rqbh3RbJ8O5ftsZXAt3aquj6y0CTxx6/iNXd2a5a5rRmxciY0pqx7X1r2CFF67g T5yJrFpgq5ac6IarEJXq4q42qgcXI+if91uy2GApWxIVzq6flB6NtPV1cmbeSBVvOo4/ JpWQ==
X-Gm-Message-State: APjAAAWaYHmfb2kWEy97VZderr43Ll7xUCyoB4JCueOL9W31CcTD42N9 hMKlbUMX9Ad5N81/jidszWEesBPD/LzY00piJLE=
X-Google-Smtp-Source: APXvYqzzD6SJwu0KqOIO5cPhAz/FdAA07VrffNeFOuMgxoT2QX9gSFsgg9rPEzYT8noPSQmK6KdiqdmFBzHI9tA5Qug=
X-Received: by 2002:a2e:94ca:: with SMTP id r10mr5949445ljh.118.1553280027825; Fri, 22 Mar 2019 11:40:27 -0700 (PDT)
MIME-Version: 1.0
References: <CAKz0y8zPKgTc7ctDgthOuUyag-zM8xV-P=nAC0js9HKOKYSnJA@mail.gmail.com> <C2C58125-48AC-45A1-ACFA-EAEFC6364433@nokia.com> <CAKz0y8zMQ+T=c9KkX0soefBoqEgmZ02tjAO56cUoqUUSr5cCdA@mail.gmail.com> <AM0PR07MB3844FE2F40F789D8F476FB0FF7430@AM0PR07MB3844.eurprd07.prod.outlook.com>
In-Reply-To: <AM0PR07MB3844FE2F40F789D8F476FB0FF7430@AM0PR07MB3844.eurprd07.prod.outlook.com>
From: Muthu Arul Mozhi Perumal <muthu.arul@gmail.com>
Date: Sat, 23 Mar 2019 00:10:16 +0530
Message-ID: <CAKz0y8ySkDq2Q-H_FqTirGvdT5i_C0eYyrntdkTA6SVFQzEcMA@mail.gmail.com>
To: "Rabadan, Jorge (Nokia - US/Mountain View)" <jorge.rabadan@nokia.com>
Cc: "bess@ietf.org" <bess@ietf.org>
Content-Type: multipart/alternative; boundary="0000000000004b9ca80584b3308d"
Archived-At: <https://mailarchive.ietf.org/arch/msg/bess/bjAQVfOSmAQwRdYnJWmITzlVC1w>
Subject: Re: [bess] BDF Election in EVPN VPWS Single-Active Multihoming
X-BeenThere: bess@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: BGP-Enabled ServiceS working group discussion list <bess.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/bess>, <mailto:bess-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/bess/>
List-Post: <mailto:bess@ietf.org>
List-Help: <mailto:bess-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/bess>, <mailto:bess-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 22 Mar 2019 18:40:32 -0000
Thanks, Jorge. Need another clarification. RFC 7432 does not describe how to calculate the BDF for the default DF algo. Though it is straightforward to calculate the BDF by eliminating the DF from the candidate list, would an implementation calculating the BDF that way for the default DF algo interoperate without any problem? Regards, Muthu On Fri, Mar 22, 2019 at 11:45 PM Rabadan, Jorge (Nokia - US/Mountain View) < jorge.rabadan@nokia.com> wrote: > Hi, > > Well, everyone has to support the default DF Alg, based on RFC7432. So > that one for sure. And in addition there are others that have been > implemented. For instance, Pref DF election has been implemented by > multiple vendors. > Thanks, > Jorge > > ------------------------------ > *From:* Muthu Arul Mozhi Perumal <muthu.arul@gmail.com> > *Sent:* Friday, March 22, 2019 10:41 > *To:* Rabadan, Jorge (Nokia - US/Mountain View) > *Cc:* bess@ietf.org > *Subject:* Re: [bess] BDF Election in EVPN VPWS Single-Active Multihoming > > Hi Jorge, > > I didn't mean using different algorithms for electing the DF and BFD. I am > just asking which algorithm is most widely implemented/used for electing > the DF *and* BDF for EVPN VPWS single-active multihoming. > > Regards, > Muthu > > On Fri, Mar 22, 2019 at 7:47 PM Rabadan, Jorge (Nokia - US/Mountain View) < > jorge.rabadan@nokia.com> wrote: > >> The implementations I know use the same DF Alg for DF election _*and*_ >> backup DF Election. And I don’t see why you would use something different? >> >> In other words, if you use e.g., Pref based DF Alg, use it for DF and BDF >> elections. Only that the BDF election excludes the DF from the candidate >> list. >> >> >> >> Thx >> >> Jorge >> >> >> >> *From:*BESS <bess-bounces@ietf.org> on behalf of Muthu Arul Mozhi >> Perumal <muthu.arul@gmail.com> >> *Date: *Friday, March 22, 2019 at 4:23 AM >> *To: *"bess@ietf.org" <bess@ietf.org> >> *Subject: *[bess] BDF Election in EVPN VPWS Single-Active Multihoming >> >> >> >> While RFC 8214 doesn't recommend any DF election algorithm capable of >> electing the BDF in EVPN VPWS single-active multihoming for deciding the >> backup PE, any feedback on what is(are) the widely implemented/supported DF >> election algorithm(s) by vendors? >> >> >> >> Regards, >> >> Muthu >> >
- Re: [bess] BDF Election in EVPN VPWS Single-Activ… Muthu Arul Mozhi Perumal
- [bess] BDF Election in EVPN VPWS Single-Active Mu… Muthu Arul Mozhi Perumal
- Re: [bess] BDF Election in EVPN VPWS Single-Activ… Rabadan, Jorge (Nokia - US/Mountain View)
- Re: [bess] BDF Election in EVPN VPWS Single-Activ… Muthu Arul Mozhi Perumal
- Re: [bess] BDF Election in EVPN VPWS Single-Activ… Rabadan, Jorge (Nokia - US/Mountain View)
- Re: [bess] BDF Election in EVPN VPWS Single-Activ… Muthu Arul Mozhi Perumal
- Re: [bess] BDF Election in EVPN VPWS Single-Activ… Satya Mohanty (satyamoh)
- Re: [bess] BDF Election in EVPN VPWS Single-Activ… Muthu Arul Mozhi Perumal
- Re: [bess] BDF Election in EVPN VPWS Single-Activ… Satya Mohanty (satyamoh)