IETF Logo Mail Archive

[bess] EVPN MH: Backup node behavior in Primary Path Failure

Jaikumar Somasundaram <jaikumar.somasundaram@ericsson.com> Wed, 03 October 2018 10:15 UTC

Return-Path: <jaikumar.somasundaram@ericsson.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 60CB4131047 for <bess@ietfa.amsl.com>; Wed, 3 Oct 2018 03:15:35 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.756
X-Spam-Level:
X-Spam-Status: No, score=-4.756 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.456, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=ericsson.com header.b=I+lCbyfZ; dkim=pass (1024-bit key) header.d=ericsson.com header.b=afZiaFpB
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 YXSkiAVDTOgC for <bess@ietfa.amsl.com>; Wed, 3 Oct 2018 03:15:33 -0700 (PDT)
Received: from sesbmg23.ericsson.net (sesbmg23.ericsson.net [193.180.251.37]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 267DF130F89 for <bess@ietf.org>; Wed, 3 Oct 2018 03:15:32 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; d=ericsson.com; s=mailgw201801; c=relaxed/simple; q=dns/txt; i=@ericsson.com; t=1538561730; h=From:Sender:Reply-To:Subject:Date:Message-ID:To:CC:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=n9ffe92be8oYhNXLZtP2FhmBrXEVt5DqFNqbil03X1o=; b=I+lCbyfZpsi4HdYEQFrDDCFOhD1QqJyJ4bsc+Jqp1CnxHKoPGIiG0dspzFH/hbsc n8hUsoahzq2yUhPZ8N2zQ3Tw944BgJ9dJR6LEqSvtXbPQlpz1+hbB91GHctWeiB9 bzRDGW2Rr3dCaNqXzmZrCXTmMYJSsJNxk5W5Bi63pHA=;
X-AuditID: c1b4fb25-8e7ff700000013ad-ef-5bb496c28369
Received: from ESESBMB503.ericsson.se (Unknown_Domain [153.88.183.116]) by sesbmg23.ericsson.net (Symantec Mail Security) with SMTP id 65.55.05037.2C694BB5; Wed, 3 Oct 2018 12:15:30 +0200 (CEST)
Received: from ESESSMR504.ericsson.se (153.88.183.126) by ESESBMB503.ericsson.se (153.88.183.186) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1466.3; Wed, 3 Oct 2018 12:15:30 +0200
Received: from ESESSMB502.ericsson.se (153.88.183.163) by ESESSMR504.ericsson.se (153.88.183.126) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1466.3; Wed, 3 Oct 2018 12:15:30 +0200
Received: from EUR02-VE1-obe.outbound.protection.outlook.com (153.88.183.157) by ESESSMB502.ericsson.se (153.88.183.163) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1466.3 via Frontend Transport; Wed, 3 Oct 2018 12:15:30 +0200
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ericsson.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=qX3wgTk7mA3sKXqkzaI0QELDYyRD0mmBlxU+pV0pHls=; b=afZiaFpBPEJD/aaJH0jAcZCksgB/Yod3Mtudz4RkvyGX5YG2EOsWlK9w3vD3oKgHws9QkOJZH4PsjS3GGkwPGWIXO2tUnr0IJ1XEK3+aXfLSKOxhItU3OFnUefdnDh85ydS59yehcKy5D640DSj+0bq8RhbkjW+nUIsYeVQme6E=
Received: from VI1PR07MB4302.eurprd07.prod.outlook.com (20.176.6.159) by VI1PR07MB4365.eurprd07.prod.outlook.com (20.176.7.22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1207.11; Wed, 3 Oct 2018 10:15:29 +0000
Received: from VI1PR07MB4302.eurprd07.prod.outlook.com ([fe80::9090:f202:f51d:5519]) by VI1PR07MB4302.eurprd07.prod.outlook.com ([fe80::9090:f202:f51d:5519%3]) with mapi id 15.20.1207.018; Wed, 3 Oct 2018 10:15:27 +0000
From: Jaikumar Somasundaram <jaikumar.somasundaram@ericsson.com>
To: "bess@ietf.org" <bess@ietf.org>
CC: P Muthu Arul Mozhi <p.muthu.arul.mozhi@ericsson.com>, Jiang He <jiang.he@ericsson.com>
Thread-Topic: EVPN MH: Backup node behavior in Primary Path Failure
Thread-Index: AdRViU0MMQ5ikQ8BSN2IASUtQ+6AwgFeEbAQ
Date: Wed, 03 Oct 2018 10:15:27 +0000
Message-ID: <VI1PR07MB430255B0A61B744328F1F0D286E90@VI1PR07MB4302.eurprd07.prod.outlook.com>
References: <VI1PR07MB4302B59FDFDB44A0CDED5ED186150@VI1PR07MB4302.eurprd07.prod.outlook.com>
In-Reply-To: <VI1PR07MB4302B59FDFDB44A0CDED5ED186150@VI1PR07MB4302.eurprd07.prod.outlook.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
authentication-results: spf=none (sender IP is ) smtp.mailfrom=jaikumar.somasundaram@ericsson.com;
x-originating-ip: [125.16.128.122]
x-ms-publictraffictype: Email
x-microsoft-exchange-diagnostics: 1; VI1PR07MB4365; 6:rEfmU+KACXQ716zCoQZ55V8NOYhUUElWiVtBDe+bprYUPdckbbKpuYHvmptXsqyqWWXod6K6EcpXiaEGrXAMcvnD5z13k8Q7KpwdlsSbKCN2JcbqN//yRTgzD+6Q20WpNJ4UBJc9GYjaFWTk3wSryVbB7VizOiDLJrNH1XyqRzENXl7NA5hqQ/PPa+YeiRGILQrQZ2C1B8IpoFxQBl2pshV0usACC8RBWzol4KIk55PheCam8TnAScbONGQ9Bli02frBOUWNW6qCt3+Aw/47i3dXwCju9oWahYQwBzCu1eAvKVSKpb5PU9Uj//9BArMT1XE98nDLjckN2lwqVo5kfqBjbvIqGdS3r6rROJ049S4KsWxwLHfnNFkehmdrRp8gip1zErVGLUBMdzJ1ZwOd5C7oUbeB/Ze4G2JD1HEEjvALLL0gV1dv/W5on8WgK/H0fUSB9rOd+9Sck57sy39mDw==; 5:EJPW6LNXsi7/Nu/TwrfAulSjX5JnrHiXlbJFocjdOZcNY4RilNld8P6T2+xUyTpuoGS1faVzNudzGXq5zrM0rgASsbMEhnsj4rw5qF+9PSpsjs0aAnd4EXcDCd8wF3UErlO/qVU/kULG3xNF8dmsbyOYp25UJW05DlPxZQWTGYM=; 7:0KZ21wioe3Ln9zpPIoUre3fYk7IyCgOqe+Ow7UorfWTsYRQT0aM7F1vqGvdcSgpKvXa5xQ3jH4QYsg1I9Opik0W2FZ/RtSyT/0S/vj8EcZiZdhAfOnkc6HA99qmSaWsFOhd+XvZdiBlqsoEAG5PEsbdbrAYNERQe3JtfOd1ZBaWNhdJKY4KFQtfc9K9uox0F32xZC4usOSxUmLIKDAzj6GA5OTdyo0vW9f7sKegFqiv700jzZ3IT/h5X084jSSg2
x-ms-exchange-antispam-srfa-diagnostics: SOS;SOR;
x-forefront-antispam-report: SFV:SKI; SCL:-1; SFV:NSPM; SFS:(10009020)(136003)(346002)(376002)(366004)(396003)(39860400002)(53754006)(53474002)(199004)(189003)(54906003)(186003)(2900100001)(76176011)(25786009)(74316002)(9326002)(26005)(446003)(2351001)(11346002)(7736002)(102836004)(4326008)(6436002)(5630700001)(256004)(14444005)(14454004)(86362001)(316002)(55016002)(5640700003)(9686003)(105586002)(5660300001)(476003)(6116002)(71200400001)(6916009)(71190400001)(81166006)(478600001)(106356001)(790700001)(6306002)(54896002)(53936002)(3846002)(8676002)(2501003)(68736007)(486006)(81156014)(8936002)(5250100002)(97736004)(44832011)(99286004)(6506007)(107886003)(33656002)(1730700003)(66066001)(2906002)(7696005); DIR:OUT; SFP:1101; SCL:1; SRVR:VI1PR07MB4365; H:VI1PR07MB4302.eurprd07.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; A:1; MX:1;
x-ms-office365-filtering-correlation-id: 9d160d79-6402-4fd1-8a7e-08d629192454
x-microsoft-antispam: BCL:0; PCL:0; RULEID:(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600074)(711020)(2017052603328)(7153060)(7193020); SRVR:VI1PR07MB4365;
x-ms-traffictypediagnostic: VI1PR07MB4365:
x-microsoft-antispam-prvs: <VI1PR07MB43655786DE86284143DFB57D86E90@VI1PR07MB4365.eurprd07.prod.outlook.com>
x-exchange-antispam-report-test: UriScan:(21748063052155)(28532068793085)(190501279198761)(227612066756510);
x-ms-exchange-senderadcheck: 1
x-exchange-antispam-report-cfa-test: BCL:0; PCL:0; RULEID:(8211001083)(6040522)(2401047)(5005006)(8121501046)(3231355)(944501410)(52105095)(10201501046)(3002001)(93006095)(93001095)(149066)(150057)(6041310)(20161123558120)(20161123560045)(20161123562045)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123564045)(201708071742011)(7699051); SRVR:VI1PR07MB4365; BCL:0; PCL:0; RULEID:; SRVR:VI1PR07MB4365;
x-forefront-prvs: 0814A2C7A3
received-spf: None (protection.outlook.com: ericsson.com does not designate permitted sender hosts)
x-microsoft-antispam-message-info: G3eMVT/DKVzAX1vvSN5KEvS4fi6vSyUklc1hneuDcp0jXTLOFrdNmH5uAArwk14gAns+PfuxuihveCtGg2RPbs9l/k9PttCe6xtv8WVx+quBPtFoUXkptKLT0qBc7mubVD1l0iGhXafhif/bwsGrtoHLdwX2aqUcbiLqEw6Ynde7yaON7Huw29RPsOsRhRncYoVb/zSFGUchCVisBXsRCIqcyqMLC0w/A6k5eFvCsJZTi8SzM2DUC638J5XlIBNIp2D7B4EameCCGlxI/ZXou5FHVpdVD42t3sYEhouqbv+DwJMuag8pWJ6S0e/Vvu/WHv+fh4gRzrsE+/eGS+T4joooxvXJIYZJzl/edGW0IzY=
spamdiagnosticoutput: 1:99
spamdiagnosticmetadata: NSPM
Content-Type: multipart/alternative; boundary="_000_VI1PR07MB430255B0A61B744328F1F0D286E90VI1PR07MB4302eurp_"
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-Network-Message-Id: 9d160d79-6402-4fd1-8a7e-08d629192454
X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Oct 2018 10:15:27.8695 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 92e84ceb-fbfd-47ab-be52-080c6b87953f
X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR07MB4365
X-OriginatorOrg: ericsson.com
X-Brightmail-Tracker: H4sIAAAAAAAAA02SW0iTYRjHe7/TPpejt6X5ZCQ0nRdalhrqRYgSgdDJCy9iKrb0w/Nm+5Zp FzJ2kWQHNdH8RqSZlFmotYWHzNpQrGlEqRWWNk9ZKgZSqWia26fh3e///P8Pz/uHlyXl1bQ3 m67RczqNOkvBSCnhdLN+v63CEn/wcUNoRF23QEahmNraRSIWqaSHU7is9FxOdyDyjDRtcOYP nXMtJK9NKKMMqC2wCLmxgA+BxWFhipCUleMuBAvCTVIUvxEMVQyj/6JmuH1d3CXA2P/OFaNw CQm3OowS0SkmwG4T1mMjCLpsT9cEyzI4CqytSid6YF/oNBxzHidxAtS/6pM4eQeOhNKlWcbJ HvgItF02SUQOAWPhJO1kCvuBtWnZxbK13e6/Ta6MfI1LJwcpJ7vhRLg/0eKaI7wT5u2PCPGW FwyOVxFiaQy17W9JkT3hx9gKLeY5WLA30OJcAWbh+3p+D7yvuuKqBbhDAovPHRLRCIbuBy9I 0ehh4HbvxsYJ+NXjoESjG8H8dDntbA84AIY+e4uZTBiomSRKULBp0wNF1oK9uZExuYpuh9fC OCXO90H1szlG5EC4d2ea3ODel2PE5nk1ktQjT57jz2anhoQGcbr0ZJ7XaoI0nP4JWvs3VsuS sgX1zUTbEGaRwl2mKrTEy2l1Lp+fbUPAkgoP2XW1OV4uS1HnX+R02iTd+SyOt6HdLKXwko2E m1VynKrWc5kcl8PpNlyCdfM2oIQ3N6JjYiNXak3Zg3FTdOOS8HNXrH8xMXFO9uVrpZnpOVWX Z5eRyWWOh3knm1SrW3FdRrokrtLP75Nv8/Lqtm/KlC1JeQ0Fne4fLhmiKO2oz0C9++oFvcSv IKPEuHf0qH9YvzFSe3Xq+EfaMNdq9JlNDEMRZE15vNI3wqoMV1B8mjo4gNTx6n9FgF7oMwMA AA==
Archived-At: <https://mailarchive.ietf.org/arch/msg/bess/NJil5DQ-6mpDyv2WgzmGXPUFtD8>
X-Mailman-Approved-At: Thu, 04 Oct 2018 01:03:01 -0700
Subject: [bess] EVPN MH: Backup node behavior in Primary Path Failure
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: Wed, 03 Oct 2018 10:15:35 -0000

Hello Everyone,

Sorry if it is a duplicate. I repost this query as I did not receive any response yet.
(I was wondering if this mail already reached the group or not)


I have a question on Primary PE encountering a failure in EVPN multihoming

in single active mode.



RFC7432, section 14.1.1:

<snip>

   If there is more than one backup PE for a given ES, the remote PE

   MUST use the primary PE's withdrawal of its set of Ethernet A-D per

   ES routes as a trigger to start flooding traffic for the associated

   MAC addresses (as long as flooding of unknown unicast packets is

   administratively allowed), as it is not possible to select a single

   backup PE.

</snip>



Questions:

1. Will the node in backup mode forward the packet to CE?

2. Will all the nodes in backup mode forward the packet before DF election?

3. If they forward, how is duplicate packets handled, in this case?



Please help me anwere these questions.



Thanks & Regards

Jaikumar S

v2.23.0 | Report a Bug | By Email