Re: [spring] WG Adoption call - draft-srcompdt-spring-compression-requirement - draft-srcompdt-spring-compression-analysis

Ron Bonica <rbonica@juniper.net> Wed, 22 September 2021 21:25 UTC

Return-Path: <rbonica@juniper.net>
X-Original-To: spring@ietfa.amsl.com
Delivered-To: spring@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A658E3A08DC for <spring@ietfa.amsl.com>; Wed, 22 Sep 2021 14:25:17 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.55
X-Spam-Level:
X-Spam-Status: No, score=-2.55 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.452, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, 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=juniper.net header.b=KvM2bpVm; dkim=pass (1024-bit key) header.d=juniper.net header.b=HQSK8QoJ
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 7cniIQVXqmdW for <spring@ietfa.amsl.com>; Wed, 22 Sep 2021 14:25:07 -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 4C3D43A08B7 for <spring@ietf.org>; Wed, 22 Sep 2021 14:25:06 -0700 (PDT)
Received: from pps.filterd (m0108159.ppops.net [127.0.0.1]) by mx0a-00273201.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 18MDtPsi020648; Wed, 22 Sep 2021 14:25:04 -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=NWZTZvUzTPqn4XiXvkLCHaXIrtSrH1QaFfbGZsFflTw=; b=KvM2bpVmDCvCe+950Cc9qb2l7Ab5QtaA0qczGdGlnEizdhLztUD6ZY5Rm+13xYRu/RJc FiCO1443npB9JvSC7KkgEBdOBeom3oJ2AgVO+0qIMiwWRV9SCRjnlyWX0CNoGgCBSAj7 0GPzriGJJSaYK2FDzcRTgLhaWM7BO2FRD/7QKugTf23kNIY0EaL7OZ/k5BlUCtFu0SkQ RBjBGf3gzs41+D/xeEx55K0KVZTDBYrfFlzsszdni3Pd28WGYkkPEwq8JMv1/q+3GTD0 mBfVgdfh6U0i+jiCRiW6DPn/Q7Y1y0DeJYT/HLLFTdkuyZkmtHP+fCgDUsyX3tz/XBm8 mg==
Received: from nam12-mw2-obe.outbound.protection.outlook.com (mail-mw2nam12lp2046.outbound.protection.outlook.com [104.47.66.46]) by mx0a-00273201.pphosted.com with ESMTP id 3b85t20sde-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 22 Sep 2021 14:25:04 -0700
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=DdpJY7LPtUjwtFuZ1JzuIBAFG654v5JDKVuexQ6KVPBVv8Wqh0L+pQNPEUNcPCJyLkE2RyN8h9MypT/kR3TZfo6v6qhERkTWM1RKwQXLPPGTaBSNjKWLQogTojde5EZLoaa2K5h9eq+v7a4Tg/5lqz9KvnMJ3KzrhjRg+u1WBA6tMMD/Tt2E8jKs1HBRfmyFmJjjp18a5ogB1mGAyluHnU1OXmH3Ct3bnnHMHKxoSih2Z8pPRzGLrEN/F4CdD9BdfG6BDPSM1w9yA0sd9k4jCn9ILd7IDkPdFKhwyAXwDUNVs3vSY1FOWiYOB6LBksZdR3vHPfwKwkusXyjioqe3TA==
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; bh=NWZTZvUzTPqn4XiXvkLCHaXIrtSrH1QaFfbGZsFflTw=; b=Pv0VQtN7RxubQaAErgrTI+FIBjaf8yENLS10/zxpy4Tw4nykvcFhAgzp319njzq2jFU2NZPpPOGtFbMW78mVaep/5ZYaqU6tMFKVTUcU1fL/G11rVQrhd1lIodUsGqozZrw2Ma35dJqSjmuQyeT5V8uVEyh9WdK3uGhd4BmhOxNhZ4gxt9zxqOgx5E8FMzKoITyGGGp6pQ698fRmvXEAwwHRlRIog3q1sZUTMagWFprWKOOtIlPiIh1kpvXTYKczn9Jby9g4zZP8+FhXwdUkN41mMrJU1gcF8BZaf69cgJP0fVW3i+ky3CXstTpQsje5D4aW50YtVLp+eLGgWCt5Hg==
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=NWZTZvUzTPqn4XiXvkLCHaXIrtSrH1QaFfbGZsFflTw=; b=HQSK8QoJZRYw8HLo1vU9kXQzPfwhvg1ZL1aR9/59jmRoMcRCqI+ZtSwjXSQoMJ0iOwcl/bS8cqxJJhjeVub+qSSnvqo8Z7FRK3MPp42uF79ZoQofNivPrgoZV0wAm451WyBY4Iln598aHJmEiLKhmuXqAeCXB5cvJ9whgieJf6U=
Received: from BYAPR05MB5318.namprd05.prod.outlook.com (2603:10b6:a03:7c::10) by SJ0PR05MB7625.namprd05.prod.outlook.com (2603:10b6:a03:2ab::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4544.9; Wed, 22 Sep 2021 21:25:01 +0000
Received: from BYAPR05MB5318.namprd05.prod.outlook.com ([fe80::99a7:9073:56c:dfd0]) by BYAPR05MB5318.namprd05.prod.outlook.com ([fe80::99a7:9073:56c:dfd0%2]) with mapi id 15.20.4544.013; Wed, 22 Sep 2021 21:25:01 +0000
From: Ron Bonica <rbonica@juniper.net>
To: Dhruv Dhody <dhruv.ietf@gmail.com>, "bruno.decraene@orange.com" <bruno.decraene@orange.com>
CC: "spring@ietf.org" <spring@ietf.org>
Thread-Topic: [spring] WG Adoption call - draft-srcompdt-spring-compression-requirement - draft-srcompdt-spring-compression-analysis
Thread-Index: Adej6fEfucpaNY0DSOmZKpSUpxaE9wKVncQAAG1C09A=
Date: Wed, 22 Sep 2021 21:25:01 +0000
Message-ID: <BYAPR05MB53189F21E43D94C13E3CB733AEA29@BYAPR05MB5318.namprd05.prod.outlook.com>
References: <15436_1631020356_61376544_15436_364_1_53C29892C857584299CBF5D05346208A4CE99E43@OPEXCAUBM43.corporate.adroot.infra.ftgroup> <CAB75xn7RFyBm7Z_Lhc7=fm8yFH+_Ha_E2YYVLUUa-evxaz=zgQ@mail.gmail.com>
In-Reply-To: <CAB75xn7RFyBm7Z_Lhc7=fm8yFH+_Ha_E2YYVLUUa-evxaz=zgQ@mail.gmail.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
dlp-product: dlpe-windows
dlp-version: 11.6.100.41
dlp-reaction: no-action
msip_labels: MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_Enabled=true; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_SetDate=2021-09-22T21:25:00Z; 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=56d5bcaa-b69e-4997-91d3-abe5872193ba; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_ContentBits=2
authentication-results: gmail.com; dkim=none (message not signed) header.d=none;gmail.com; dmarc=none action=none header.from=juniper.net;
x-ms-publictraffictype: Email
x-ms-office365-filtering-correlation-id: db06516e-fc70-4e52-0eed-08d97e0f6ffa
x-ms-traffictypediagnostic: SJ0PR05MB7625:
x-microsoft-antispam-prvs: <SJ0PR05MB7625B3316C695FFF23C24330AEA29@SJ0PR05MB7625.namprd05.prod.outlook.com>
x-ms-oob-tlc-oobclassifiers: OLM:6108;
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:BYAPR05MB5318.namprd05.prod.outlook.com; PTR:; CAT:NONE; SFS:(4636009)(366004)(8676002)(508600001)(110136005)(9686003)(8936002)(71200400001)(5660300002)(53546011)(6506007)(4326008)(7696005)(316002)(38100700002)(76116006)(122000001)(52536014)(86362001)(186003)(66946007)(66446008)(2906002)(66476007)(33656002)(66556008)(26005)(55016002)(64756008)(38070700005); DIR:OUT; SFP:1102;
x-ms-exchange-antispam-messagedata-chunkcount: 1
x-ms-exchange-antispam-messagedata-0: =?us-ascii?Q?E3l2wIe7L85ErIlsJqQxEInF/XMzPx03PqCaMlPaiU7aluFtJPxYKBC0zpWo?= =?us-ascii?Q?sPftAb3kms8NfITHo4m+ej/2GKEDqpYRoWHXsK3M9HNgJlaC1b0bhesg8IWr?= =?us-ascii?Q?n4JcnNFYKUZV4ZVbuOfRjnLZC1h0Q9R0yYY9osGnSEob86YVWAffiDTDCsnj?= =?us-ascii?Q?aY7LEr00xcAD4RRbAifHBjT4e3EFDde033GFOB2h9vIzvpOnf59eQWPIN+yN?= =?us-ascii?Q?BA8I/sIfa5eGLkc8sWdb/XROcK+YE8R6P7DwlGS5K10TWjWEDwCAf2qpV/xn?= =?us-ascii?Q?aOO9femjo/i24hywpboYmlLyEWBIDXiz9DdFUP9tcKESuQUyw2xUVR42ikWK?= =?us-ascii?Q?drRMayxO2wsBJ+pVH/cC6hIUqwL3jmQ21CGkdlBuQt0FhwFCfkjJmoqGpvev?= =?us-ascii?Q?1gsor4XA0FJZ8Y/gslwbSiuU/59ay4QXwlNQvFTiP36BLJkj+qGl0BMiO5oz?= =?us-ascii?Q?SMZmH/6rgyNarK2GsVdgQpCXSCejdN/wC1fV9ncc0usj08ZFwbKW+uRZjHjf?= =?us-ascii?Q?5D2Udxvvflyhj8U+C4i09ShtBlnwtP1gec458e3mKoN4/GtNjHZhrab7S/Mi?= =?us-ascii?Q?9OzM9UAWU36gCc2Figr/vK4sXKTy+gcpD8H3GPrJ5FT+XJ5Y5axgxVWHe87I?= =?us-ascii?Q?8BHoTtEhHWGjIShebc7/JUg4QKD3ur3b63scyEsb88m/4ywEw0FrR4UDFk27?= =?us-ascii?Q?WBOrNhSLi0BGas0HRiq8D/KTalhvLK6qRpFL3swdHzZp/B731908++YMDtE4?= =?us-ascii?Q?5WhP0gRPcl1h6SmPnb5DKftcI4tL3VIn+bNQgWiTbWeNtAENeANYi+q0s4Ci?= =?us-ascii?Q?rEccvKSy0Hr1D+UYukLuDdCJIaIV5tSI8jKHxwteV/4IT0/dlskHygKGV4ac?= =?us-ascii?Q?ZMhOOXo2rlcTG/3JXxSoOs1bMwqWDV84Sy5ws3iHGHX/1dzvsYlX34mLFxrw?= =?us-ascii?Q?M/4FEvIK4BNGRe/8AGPXmiLFvwheM2o6nMIyKC1Via6X4C1waxqlJN/fk+D3?= =?us-ascii?Q?SBjylGv7IZc6Y9+ljg3+jKwKbGVbXFCasOSKxdZUZtjlwmYXvwWpsh4eY71l?= =?us-ascii?Q?OFYYa7eL6OAWxUfl0sLQXjwWM5ibE6IY38SqlSD3jMLtG1Y6g5w18SNE8vc4?= =?us-ascii?Q?B8e5YzINEHVFtk49PLqqv2HLxtO1K1jFJHlytQKERGjmVcT1GyxhEvHg31zV?= =?us-ascii?Q?FRpNrQ5bJMTI3ChViGlRn2x5uSaCQgSGgnjPn0d/6gWj0zB4+W2GO9YGxBVV?= =?us-ascii?Q?MrbjeD32vCIY2CbPQGULlh5IaVSrfSzJOqYmJ1KLJLdn7yJA6IL+8/qGnkg5?= =?us-ascii?Q?PQhXNTC0KuFE3sOcCDNkjlQu?=
x-ms-exchange-transport-forked: True
Content-Type: multipart/alternative; boundary="_000_BYAPR05MB53189F21E43D94C13E3CB733AEA29BYAPR05MB5318namp_"
MIME-Version: 1.0
X-OriginatorOrg: juniper.net
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: BYAPR05MB5318.namprd05.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: db06516e-fc70-4e52-0eed-08d97e0f6ffa
X-MS-Exchange-CrossTenant-originalarrivaltime: 22 Sep 2021 21:25:01.6444 (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: NcVdVNybhNSbyMK+7V0Lf86BgZXcsS+a0jWEz7huts/rIrWXYug5SjOGOYNJS5vbcLqEhXwr/QzuiZY5xUU1yw==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR05MB7625
X-Proofpoint-GUID: fRK25QMt7129rhSErnp8neq0fb3gvpzl
X-Proofpoint-ORIG-GUID: fRK25QMt7129rhSErnp8neq0fb3gvpzl
X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.182.1,Aquarius:18.0.790,Hydra:6.0.391,FMLib:17.0.607.475 definitions=2021-09-22_08,2021-09-22_01,2020-04-07_01
X-Proofpoint-Spam-Details: rule=outbound_spam_notspam policy=outbound_spam score=0 priorityscore=1501 phishscore=0 malwarescore=0 clxscore=1015 mlxscore=0 suspectscore=0 mlxlogscore=999 bulkscore=0 impostorscore=0 spamscore=0 adultscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2109200000 definitions=main-2109220136
Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/dZS_naZ6ctrOZUuq7bdZh_OE5Dw>
Subject: Re: [spring] WG Adoption call - draft-srcompdt-spring-compression-requirement - draft-srcompdt-spring-compression-analysis
X-BeenThere: spring@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: "Source Packet Routing in NetworkinG \(SPRING\)" <spring.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/spring>, <mailto:spring-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/spring/>
List-Post: <mailto:spring@ietf.org>
List-Help: <mailto:spring-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/spring>, <mailto:spring-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 22 Sep 2021 21:25:27 -0000

Dhruv,

You raise a very good question. What makes us think that the largest network diameter is 16? Next year, it may be 32! Maybe we need to rethink this requirement.

An IPv6 routing header can contain no more than 2,048 bytes. Therefore, an SRH without compression can support an SR path that contains as many as 127 segments. Maybe the requirement should be rewritten as follows:

NEW>
   Description: The compression proposal MUST be able to represent SR
   paths that contain up to 127 segments.

   Rationale: The SRH, without compression, can represent SR
   paths that contain up to 127 segments. Compression mechanisms must have the same capability.

   Metric: The compression proposal must be able to steer a packet
   through an SR path that contains up to 127 segments.
<NEW

This shouldn't be too controversial because all of the proposed compression mechanisms can satisfy the requirement.

                                                                                                                 Ron




Juniper Business Use Only
From: spring <spring-bounces@ietf.org> On Behalf Of Dhruv Dhody
Sent: Monday, September 20, 2021 12:56 PM
To: bruno.decraene@orange.com
Cc: spring@ietf.org
Subject: Re: [spring] WG Adoption call - draft-srcompdt-spring-compression-requirement - draft-srcompdt-spring-compression-analysis

[SNIP]


In Section 4.2.3

Description: The compression proposal MUST be able to represent SR paths that contain up to 16 segments.
Rationale: Strict TE paths require SID list lengths proportional to the diameter of the SR domain.

It would be nice to include why the number "16" in the rationale.

[SNIP]