IETF Logo Mail Archive

Re: [Detnet-dp-dt] question on section 4.1

Balázs Varga A <balazs.a.varga@ericsson.com> Wed, 21 June 2017 06:15 UTC

Return-Path: <balazs.a.varga@ericsson.com>
X-Original-To: detnet-dp-dt@ietfa.amsl.com
Delivered-To: detnet-dp-dt@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6A7A4127BA3 for <detnet-dp-dt@ietfa.amsl.com>; Tue, 20 Jun 2017 23:15:26 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.22
X-Spam-Level:
X-Spam-Status: No, score=-4.22 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=ericsson.onmicrosoft.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 M5z3YT9mioOd for <detnet-dp-dt@ietfa.amsl.com>; Tue, 20 Jun 2017 23:15:24 -0700 (PDT)
Received: from sesbmg22.ericsson.net (sesbmg22.ericsson.net [193.180.251.48]) (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 C8E1C127876 for <Detnet-dp-dt@ietf.org>; Tue, 20 Jun 2017 23:15:23 -0700 (PDT)
X-AuditID: c1b4fb30-874f69a000003fda-24-594a0ef9b355
Received: from ESESSHC008.ericsson.se (Unknown_Domain [153.88.183.42]) by sesbmg22.ericsson.net (Symantec Mail Security) with SMTP id 1C.D5.16346.9FE0A495; Wed, 21 Jun 2017 08:15:22 +0200 (CEST)
Received: from EUR01-DB5-obe.outbound.protection.outlook.com (153.88.183.145) by oa.msg.ericsson.com (153.88.183.42) with Microsoft SMTP Server (TLS) id 14.3.339.0; Wed, 21 Jun 2017 08:15:20 +0200
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ericsson.onmicrosoft.com; s=selector1-ericsson-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=+GwR0vqaq672dMsL0YjYfZSBgArTiEymZhEJQLH+Aa8=; b=Z7QcDXvHD4xRJCvLcbHF6z/zEJcBUuPukZrdKAapdN4M+P69d8VpLhxbQgPCmnX+2ZR6Jr+FsMD+amBiYsV0OX4CVAbAV7tz9p39YMiq9Y0zs2rgx6DHe3vKx3J92mezvEvCMhEvntHy95gSdNog2B0knJBlpaEHh+6kgwz92Kk=
Received: from DBXPR07MB128.eurprd07.prod.outlook.com (10.242.138.156) by DBXPR07MB285.eurprd07.prod.outlook.com (10.141.10.141) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1199.6; Wed, 21 Jun 2017 06:15:19 +0000
Received: from DBXPR07MB128.eurprd07.prod.outlook.com ([fe80::9159:b700:55d6:c30a]) by DBXPR07MB128.eurprd07.prod.outlook.com ([fe80::9159:b700:55d6:c30a%27]) with mapi id 15.01.1199.012; Wed, 21 Jun 2017 06:15:19 +0000
From: Balázs Varga A <balazs.a.varga@ericsson.com>
To: Lou Berger <lberger@labn.net>, "Detnet-dp-dt@ietf.org" <Detnet-dp-dt@ietf.org>
Thread-Topic: [Detnet-dp-dt] question on section 4.1
Thread-Index: AQHS6euVGfokRRt+B02u0aIjOxi80aIuzt2Q
Date: Wed, 21 Jun 2017 06:15:19 +0000
Message-ID: <DBXPR07MB128751366F6D337CF9137EEACDA0@DBXPR07MB128.eurprd07.prod.outlook.com>
References: <33e35865-2399-65f8-b52f-c7b82c64e842@labn.net>
In-Reply-To: <33e35865-2399-65f8-b52f-c7b82c64e842@labn.net>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
authentication-results: labn.net; dkim=none (message not signed) header.d=none;labn.net; dmarc=none action=none header.from=ericsson.com;
x-originating-ip: [91.82.100.59]
x-ms-publictraffictype: Email
x-microsoft-exchange-diagnostics: 1; DBXPR07MB285; 7: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
x-ms-office365-filtering-correlation-id: 38ab33be-c000-4834-2d49-08d4b86ce455
x-microsoft-antispam: UriScan:; BCL:0; PCL:0; RULEID:(22001)(2017030254075)(201703131423075)(201703031133081)(201702281549075); SRVR:DBXPR07MB285;
x-ms-traffictypediagnostic: DBXPR07MB285:
x-microsoft-antispam-prvs: <DBXPR07MB2852EA6198ACEF4F2637B76ACDA0@DBXPR07MB285.eurprd07.prod.outlook.com>
x-exchange-antispam-report-test: UriScan:;
x-exchange-antispam-report-cfa-test: BCL:0; PCL:0; RULEID:(100000700101)(100105000095)(100000701101)(100105300095)(100000702101)(100105100095)(6040450)(601004)(2401047)(8121501046)(5005006)(100000703101)(100105400095)(10201501046)(93006095)(93001095)(3002001)(6041248)(20161123555025)(201703131423075)(201702281528075)(201703061421075)(201703061406153)(20161123562025)(20161123558100)(20161123560025)(20161123564025)(6072148)(100000704101)(100105200095)(100000705101)(100105500095); SRVR:DBXPR07MB285; BCL:0; PCL:0; RULEID:(100000800101)(100110000095)(100000801101)(100110300095)(100000802101)(100110100095)(100000803101)(100110400095)(100000804101)(100110200095)(100000805101)(100110500095); SRVR:DBXPR07MB285;
x-forefront-prvs: 0345CFD558
x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(6009001)(39410400002)(39860400002)(39850400002)(39400400002)(39840400002)(39450400003)(13464003)(3660700001)(2906002)(3280700002)(478600001)(7736002)(5660300001)(53546010)(7696004)(2950100002)(229853002)(3846002)(86362001)(81166006)(74316002)(6436002)(50986999)(305945005)(55016002)(99286003)(6306002)(6506006)(53936002)(9686003)(25786009)(6116002)(38730400002)(102836003)(54356999)(189998001)(230783001)(33656002)(76176999)(8676002)(2900100001)(2501003)(66066001)(8936002)(5250100002)(14454004)(966005); DIR:OUT; SFP:1101; SCL:1; SRVR:DBXPR07MB285; H:DBXPR07MB128.eurprd07.prod.outlook.com; FPR:; SPF:None; MLV:sfv; LANG:en;
spamdiagnosticoutput: 1:99
spamdiagnosticmetadata: NSPM
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Jun 2017 06:15:19.1148 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 92e84ceb-fbfd-47ab-be52-080c6b87953f
X-MS-Exchange-Transport-CrossTenantHeadersStamped: DBXPR07MB285
X-OriginatorOrg: ericsson.com
X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpnleLIzCtJLcpLzFFi42KZGbFdS/cXn1ekwZw17BarJqxls+hofsvi wOSxZMlPJo8Pm5rZApiiuGxSUnMyy1KL9O0SuDL+L/7BXrCer+JLzxO2Bsbr3F2MnBwSAiYS l87vZeli5OIQEjjCKPH/Xhs7SEJI4ASjRN+8VJAEi0Avs8TmvweYIKqmMknM3v0WquUho0Tn 1VZmkBY2AVeJzx0P2UBsEYEQif5DO8FsYQFjiVdT9zBBxE0k7n46yAhhG0ksPvwYLM4ioCpx 6vEGsHpegSiJ98ffQZ1hLXFj2yawek4BG4kJ316C1TMKiEl8P7UGzGYWEJe49WQ+E8Q/AhJL 9pxnhrBFJV4+/scKciijQDejxMfu41AJBYlNC96zQ9iyEpfmdzOCFEkI3GeTeLJ7B1SRr0TX lScsEHYfo8Srw9kQtqbEvXlnoeKZEicOXoQapCXRcWQWE8SgA6wSB692QhXJSGxr6mGFSMxl lejcvRQaLlISd690Mk5g1JqF5A0IW0/ixtQpbBC2tsSyha+ZZ4GDRlDi5MwnLAsYWVYxihan FiflphsZ6aUWZSYXF+fn6eWllmxiBCaPg1t+G+xgfPnc8RCjAAejEg/vjj+ekUKsiWXFlbmH GCU4mJVEeP15vSKFeFMSK6tSi/Lji0pzUosPMUpzsCiJ8zruuxAhJJCeWJKanZpakFoEk2Xi 4JRqYFSOflF8w+DsFPk//y+u6tddMdefS8i6IPnP7Me/jTKuvzho8fJ97yQDiaiLetPcebPv P3CWvn7ywL3AkCiBgIPHzp278u4Le0HmDnGnvZ+vH+2fPPvkZc/6375Nbg0Rij3tU162NK6O 3l/EdeCbqczu6Qs1zDe6sIU1ahQFKH3tbHn29km8QqgSS3FGoqEWc1FxIgDY1ZxLGgMAAA==
Archived-At: <https://mailarchive.ietf.org/arch/msg/detnet-dp-dt/FS7-SRWifeX5Bv-AKmgKgm3Pe58>
Subject: Re: [Detnet-dp-dt] question on section 4.1
X-BeenThere: detnet-dp-dt@ietf.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: DetNet WG Data Plane Design Team <detnet-dp-dt.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/detnet-dp-dt>, <mailto:detnet-dp-dt-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/detnet-dp-dt/>
List-Post: <mailto:detnet-dp-dt@ietf.org>
List-Help: <mailto:detnet-dp-dt-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/detnet-dp-dt>, <mailto:detnet-dp-dt-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 21 Jun 2017 06:15:26 -0000

Hi Lou,

This text in the draft is a very short summary of a somewhat longer discussion we have had on the calls. 
It seems to be too short ... It intends to refer to the following:

In case of PWoMPLS there may be many labels in the label stack (SR labels, etc.) of a DetNet packet. 
Transit (P) nodes should ensure zero-congestion-loss by allocating resources for the DetNet flows.
In order to identify a given DetNet flow (and using the for the flow allocated resources) transit 
nodes need to walk through the whole label stack, what may not be supported by the transit node 
or may impact the packet forwarding capabilities of the node. Furthermore it requires per DetNet 
flow states on transit nodes.

These requirements could be simplified by putting together multiple DetNet flows e.g., in a tunnel 
and allocate resources on a transit node only for such an "aggregate DetNet flow". So, the transit 
node has to identify only the tunnel and not each individual DetNet flow, what results in simplified 
operation and less states. 

Cheers
Bala'zs

-----Original Message-----
From: Detnet-dp-dt [mailto:detnet-dp-dt-bounces@ietf.org] On Behalf Of Lou Berger
Sent: 2017. június 20. 19:34
To: Detnet-dp-dt@ietf.org
Subject: [Detnet-dp-dt] question on section 4.1

Does anyone know what the following is intended to mean:


  However, transit nodes may have limited capabilities to recognize DetNet
  specific fields (e.g., in case of MPLS the PW label). Therefore, identifying each
  individual DetNet flow on a transit node may not be achieved in some network
  scenarios.

Thanks,

Lou

_______________________________________________
Detnet-dp-dt mailing list
Detnet-dp-dt@ietf.org
https://www.ietf.org/mailman/listinfo/detnet-dp-dt

v2.23.0 | Report a Bug | By Email