IETF Logo Mail Archive

Re: [mpls] Question regarding RFC8595

John E Drake <jdrake@juniper.net> Tue, 19 April 2022 19:39 UTC

Return-Path: <jdrake@juniper.net>
X-Original-To: mpls@ietfa.amsl.com
Delivered-To: mpls@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 277533A0DE0 for <mpls@ietfa.amsl.com>; Tue, 19 Apr 2022 12:39:56 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.106
X-Spam-Level:
X-Spam-Status: No, score=-2.106 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_MESSAGE=0.001, RCVD_IN_ZEN_BLOCKED_OPENDNS=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01, URIBL_BLOCKED=0.001, URIBL_DBL_BLOCKED_OPENDNS=0.001, URIBL_ZEN_BLOCKED_OPENDNS=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=juniper.net header.b=Af6shP1e; dkim=pass (1024-bit key) header.d=juniper.net header.b=JyvBE9BN
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 cEPwmHNkRsUc for <mpls@ietfa.amsl.com>; Tue, 19 Apr 2022 12:39:51 -0700 (PDT)
Received: from mx0a-00273201.pphosted.com (mx0a-00273201.pphosted.com [208.84.65.16]) (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 CC9093A0DD8 for <mpls@ietf.org>; Tue, 19 Apr 2022 12:39:47 -0700 (PDT)
Received: from pps.filterd (m0108156.ppops.net [127.0.0.1]) by mx0a-00273201.pphosted.com (8.16.1.2/8.16.1.2) with ESMTP id 23JITowE018859; Tue, 19 Apr 2022 12:39:44 -0700
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=juniper.net; h=from : to : cc : subject : date : message-id : references : in-reply-to : content-type : mime-version; s=PPS1017; bh=Br1UFm6H/WSEq/s24rL5Emr6uVf1n/IkpvN8KOOuSvQ=; b=Af6shP1eI6TnhV/Y7Igf6VHKWWJnQL7JgFea4vmkRVuJp1YAwQgDmOtwpcXYHmDgolW6 N6GPSLfXolNN2H4muE7BLVBuz7WDnIOwXYPQ++gCoqCaACvVRpj/z6PwKo10kIGWu+e+ T160lUdNUB0vVnuq12356elM3HZ0qo1svgXf5Mbpbe/trRpZhqd60RwcLXaypJvOopJD 0+UTb+Qq31/ZvuvBg/qPdsqoHGV5ZpNJxz7/V1iTc8zmd2tKVXgugKXiglYhK1b60Rh1 j9tUifB/d/YDVlQpPjIceMV0fqc7Qin6PvVMHFdWUnOif+08+CK+iuldejgqIcFyvc2/ uw==
Received: from nam12-bn8-obe.outbound.protection.outlook.com (mail-bn8nam12lp2169.outbound.protection.outlook.com [104.47.55.169]) by mx0a-00273201.pphosted.com (PPS) with ESMTPS id 3fhnay9n6f-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 19 Apr 2022 12:39:44 -0700
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=L3kj+EjI1wiSC696+lf4tMjzAHNq6F3KVV5m37ToDTzxU5y1iewPJyx4QiZSP1qRhudsZMH8kKJQ1Bca3ynT4bjk5yf8XcJgpyDQecfv2CMBENwjKr+FfcAsWUPaYUKYsbgLkR/EuxSWPWl3mVB0jeC/vPz/FhNgU7v625ciIWJKzrg8ki6OQLht6tQ4IP2GXlx4mD9WO1csigXBllLiBN2RwsxOlVLVT+dY8kB1tKcpD5jp6thSPUbjg6cAaFvoxz0CEDAfKCn1y+zsuN2D421pKNGq58QzSbXSrq6NyiyJJMTaphIKeNmI+GHs+dBfqzT2Mhp19hWfU1zP7Lx9aA==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=Br1UFm6H/WSEq/s24rL5Emr6uVf1n/IkpvN8KOOuSvQ=; b=kDltFUyv6L60k2xXbhqLtG2Z9jixoAC931g+prpI3/6hisG3VyzN+BkUQDDl0UsA5ue4uYYebavnx0bKWmT2QEGdl0utPHIVs/Bc4yC/cC8iYbBYVx5Y7l2NKW6sVMVBIxZi09zoQoVuIyv5cJm2HVVV6b3sZYkDHqd0+hCtGbEnhdlTczP1eHBqcOTCgUY+IQq0mlaGCBCUIiuGXX3Yx3daul9AO11G4uWncWdINE0b/kpv3PBZU8jUD9+C9dAuwo3DMvOEm2q/AAngidl12zetQ1DilnqBiZFGx1MdTsuR6nwr1qHIa1OSjsRj+RgbpHXG866UgzleafMQsffbaw==
ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=juniper.net; dmarc=pass action=none header.from=juniper.net; dkim=pass header.d=juniper.net; arc=none
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=juniper.net; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Br1UFm6H/WSEq/s24rL5Emr6uVf1n/IkpvN8KOOuSvQ=; b=JyvBE9BNETxr4tufOqUMbe3u4Ms8L73QMBqXmw+CaYIr8pTDI0EUmVK/kh8LsZBjdC0uPqHahV8qPUhOeeRUw5n9M0YCQb08J4DlJXe+c2lL/OonZ7dy54zfm4rRfWV08mEp7twbwHcRV+XMoJuQagrKnFuk7CpQKkmUju3SKtM=
Received: from BY3PR05MB8081.namprd05.prod.outlook.com (2603:10b6:a03:366::15) by DM6PR05MB4170.namprd05.prod.outlook.com (2603:10b6:5:81::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5186.6; Tue, 19 Apr 2022 19:39:41 +0000
Received: from BY3PR05MB8081.namprd05.prod.outlook.com ([fe80::8db8:fd72:6beb:3657]) by BY3PR05MB8081.namprd05.prod.outlook.com ([fe80::8db8:fd72:6beb:3657%9]) with mapi id 15.20.5186.013; Tue, 19 Apr 2022 19:39:40 +0000
From: John E Drake <jdrake@juniper.net>
To: Haoyu Song <haoyu.song@futurewei.com>, "draft-ietf-mpls-sfc@ietf.org" <draft-ietf-mpls-sfc@ietf.org>
CC: "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: Question regarding RFC8595
Thread-Index: AdhUGPPBxEG+MuyZRmWyHbLqUwEh9gAC4Paw
Date: Tue, 19 Apr 2022 19:39:40 +0000
Message-ID: <BY3PR05MB8081E5BDE972DF291BB65ADAC7F29@BY3PR05MB8081.namprd05.prod.outlook.com>
References: <BY3PR13MB4787F13F0F3C25BE67F2980C9AF29@BY3PR13MB4787.namprd13.prod.outlook.com>
In-Reply-To: <BY3PR13MB4787F13F0F3C25BE67F2980C9AF29@BY3PR13MB4787.namprd13.prod.outlook.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
dlp-product: dlpe-windows
dlp-version: 11.6.401.20
dlp-reaction: no-action
msip_labels: MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_Enabled=true; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_SetDate=2022-04-19T19:39:38Z; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_Method=Standard; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_Name=0633b888-ae0d-4341-a75f-06e04137d755; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_SiteId=bea78b3c-4cdb-4130-854a-1d193232e5f4; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_ActionId=ae95ebc2-f112-433f-8b19-ceb89109e5cb; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_ContentBits=2
x-ms-publictraffictype: Email
x-ms-office365-filtering-correlation-id: d63263d1-e19e-42f0-f59f-08da223c58c2
x-ms-traffictypediagnostic: DM6PR05MB4170:EE_
x-ms-exchange-atpmessageproperties: SA|SL
x-microsoft-antispam-prvs: <DM6PR05MB4170FE31EB77B1AE95766D62C7F29@DM6PR05MB4170.namprd05.prod.outlook.com>
x-ms-exchange-senderadcheck: 1
x-ms-exchange-antispam-relay: 0
x-microsoft-antispam: BCL:0;
x-microsoft-antispam-message-info: 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
x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:BY3PR05MB8081.namprd05.prod.outlook.com; PTR:; CAT:NONE; SFS:(13230001)(4636009)(366004)(84040400005)(110136005)(2906002)(5660300002)(508600001)(71200400001)(316002)(66476007)(7116003)(9686003)(8936002)(52536014)(33656002)(26005)(186003)(66556008)(66946007)(8676002)(76116006)(4326008)(66446008)(64756008)(53546011)(38100700002)(6506007)(122000001)(7696005)(55016003)(83380400001)(86362001)(38070700005); DIR:OUT; SFP:1102;
x-ms-exchange-antispam-messagedata-chunkcount: 1
x-ms-exchange-antispam-messagedata-0: 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
Content-Type: multipart/alternative; boundary="_000_BY3PR05MB8081E5BDE972DF291BB65ADAC7F29BY3PR05MB8081namp_"
MIME-Version: 1.0
X-OriginatorOrg: juniper.net
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: BY3PR05MB8081.namprd05.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: d63263d1-e19e-42f0-f59f-08da223c58c2
X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Apr 2022 19:39:40.8744 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: bea78b3c-4cdb-4130-854a-1d193232e5f4
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: AQVRIb8LB8PXo3vspOI00TYgg/EEzWFlM3eXhYs9zuSc4OTURXKTxvr4rHNPQ/Wm5YoIkS0T+L5GMHR5Ywes3g==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR05MB4170
X-Proofpoint-ORIG-GUID: HTY56Ii0sRuybsTLZnBAf3sVanJz_8nO
X-Proofpoint-GUID: HTY56Ii0sRuybsTLZnBAf3sVanJz_8nO
X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.858,Hydra:6.0.486,FMLib:17.11.64.514 definitions=2022-04-19_07,2022-04-15_01,2022-02-23_01
X-Proofpoint-Spam-Details: rule=outbound_spam_notspam policy=outbound_spam score=0 adultscore=0 mlxscore=0 priorityscore=1501 suspectscore=0 bulkscore=0 malwarescore=0 lowpriorityscore=0 phishscore=0 impostorscore=0 clxscore=1011 mlxlogscore=999 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000 definitions=main-2204190110
Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/3XTXYlrzToe2RFo2fV_yVvIan2g>
Subject: Re: [mpls] Question regarding RFC8595
X-BeenThere: mpls@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Multi-Protocol Label Switching WG <mpls.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/mpls>, <mailto:mpls-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/mpls/>
List-Post: <mailto:mpls@ietf.org>
List-Help: <mailto:mpls-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/mpls>, <mailto:mpls-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 19 Apr 2022 19:39:56 -0000

Haoyu,

I think RFC 8595 could be supplemented by carrying the NSH as post-stack data.  I think the existing mechanisms defined in RFC 8595 for carrying SFC traversal information should be retained, so we may have a case for post-stack data without an NAI.

Yours Irrespectively,

John



Juniper Business Use Only
From: mpls <mpls-bounces@ietf.org> On Behalf Of Haoyu Song
Sent: Tuesday, April 19, 2022 2:23 PM
To: draft-ietf-mpls-sfc@ietf.org
Cc: mpls@ietf.org
Subject: [mpls] Question regarding RFC8595

[External Email. Be cautious of content]

Dear RFC8595 authors,

I have a question. RFC8595 provides a method to emulate NSH in MPLS data plane.
Now we are working on defining a new framework to support network actions in MPLS data plane.
Once we have that, do you think it's possible and useful to support NSH natively in MPLS data plane? That is, to put NSH directly in post-stack data (PSD) container.
What I see an advantage is NSH can carry metadata while the emulating approach can't.
I'm not an expert of NSH so I need your thoughts on this. Thank you very much!

Best regards,
Haoyu

v2.23.0 | Report a Bug | By Email