IETF Logo Mail Archive

[spring] Comments on SR policy

"li_zhenqiang@hotmail.com" <li_zhenqiang@hotmail.com> Wed, 05 August 2020 08:32 UTC

Return-Path: <li_zhenqiang@hotmail.com>
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 025AB3A13CF; Wed, 5 Aug 2020 01:32:55 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.09
X-Spam-Level:
X-Spam-Status: No, score=-2.09 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_MSPIKE_H2=-0.001, SPF_PASS=-0.001, T_KAM_HTML_FONT_INVALID=0.01] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=hotmail.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 GCVLQy5XqOAK; Wed, 5 Aug 2020 01:32:53 -0700 (PDT)
Received: from APC01-SG2-obe.outbound.protection.outlook.com (mail-oln040092253056.outbound.protection.outlook.com [40.92.253.56]) (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 4360E3A13D0; Wed, 5 Aug 2020 01:32:50 -0700 (PDT)
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=eDlSd+SC7stKCWUx058qH+Blnqz59cs3x/4IeyADc48bq48mTaRM8UlWuASRssVB5SlQaWTGai+hvQCRVsyYGh+8x1hZoqj9t4coOt0uppaZRDjtHLWd+r6ak/bHw2mg4WPBI4gONjkdg9kn9f9A+2+Y/5JeZgjfJrtsvykw0pe86t/vkIkO17NBs2TZbbKr3nH2XtDYCMSAkLEmdfHWQ4p1OJGec/D0j51Db82ZlALkbGYM3aAx1C6jZrzcxaPKVqifsS5sE51qC3JHfKReG2ctLjwelZMcB+FIKaosOC0DhydMxPSzie1KkkimUJqi3qd9mBDNe6xAZQmWTWYqEg==
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-SenderADCheck; bh=w/l8e4IyGfe0cKrJ8YqcVCEjH2QzXU9UOCzC38kVWfE=; b=eWpVOu2Y2PUK4lMGZ54Y/6plzoDFHayL8fEo05Dt37553ZtuPEa53hxbg2Ilk9Yko1gqWP5AF2WBwbuftfLEeWym/jP1p7aLjAWVJzbHEv3O6IDd7taBvbhAeBtMI6duq2XQMoaZtBm1/XZGtp5GVkOJVYki+PwZRJuuiT+WDcp9d6V2gcJBlh3dJWtHRS+jGfxO6XZJ9koF7B2sK9D8RFsHRoxgG4DNwMpig58HDxODLx4FXUyiBolVOy5jerLvislBnU+m9+kZLefSjC2psax/iQVj9sKOSSApYv25PJPrBTV3H7NuME4mvn3VrFKGgGTz+6wkgh5aWcwxJzWF+A==
ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=none; dmarc=none; dkim=none; arc=none
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=hotmail.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=w/l8e4IyGfe0cKrJ8YqcVCEjH2QzXU9UOCzC38kVWfE=; b=fg7rdg1SP/HMr+HrzGcumzKlQ1S03yWu/2AJ+B1rOsnrRZvO3tsY3sioudsn+jW0n5WFABCNyeZiQxBwi4xqOF2dDTTJRvLc7uEtePPUwvmNPu1deqDvwso68ySZ+oSrXUKdnRh1X6sGqD/o07NpmjWshZ8caWs7gKGogRl7qR+isNnADLq53quW40nGuRwzdaNYDM3mA9mWeGg84GoivESCUoyMseKKxtrwqzwdEsMo0jfcZLUlmnpGcERjAM4h9RYjZJ5ssroho+U+GQElqRs1AkyPl+PAgIyUl6OimzDboERsGTxJf61L3BkrFXGCgW5AW161nC6PLgnAK//qSw==
Received: from HK2APC01FT011.eop-APC01.prod.protection.outlook.com (2a01:111:e400:7ebc::53) by HK2APC01HT102.eop-APC01.prod.protection.outlook.com (2a01:111:e400:7ebc::291) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3261.16; Wed, 5 Aug 2020 08:32:45 +0000
Received: from HK0PR03MB4066.apcprd03.prod.outlook.com (2a01:111:e400:7ebc::4a) by HK2APC01FT011.mail.protection.outlook.com (2a01:111:e400:7ebc::153) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3261.16 via Frontend Transport; Wed, 5 Aug 2020 08:32:45 +0000
X-IncomingTopHeaderMarker: OriginalChecksum:51DD923BE0DA75858A52836F0198DE5342815E85157AA219368846284E8FFFFE; UpperCasedChecksum:CA9D4D66E493ADF3F439F34836FB789A159A5654E5F898DE15374CD98AB2ACBB; SizeAsReceived:7607; Count:48
Received: from HK0PR03MB4066.apcprd03.prod.outlook.com ([fe80::4821:4bbe:ef2a:6dee]) by HK0PR03MB4066.apcprd03.prod.outlook.com ([fe80::4821:4bbe:ef2a:6dee%4]) with mapi id 15.20.3261.015; Wed, 5 Aug 2020 08:32:45 +0000
Date: Wed, 05 Aug 2020 16:33:19 +0800
From: "li_zhenqiang@hotmail.com" <li_zhenqiang@hotmail.com>
To: "spring@ietf.org" <spring@ietf.org>, draft-ietf-spring-segment-routing-policy <draft-ietf-spring-segment-routing-policy@ietf.org>
X-Has-Attach: no
X-Mailer: Foxmail 7.2.9.156[cn]
Message-ID: <HK0PR03MB4066195B12BDB26D4327B36DFC4B0@HK0PR03MB4066.apcprd03.prod.outlook.com>
Content-Type: multipart/alternative; boundary="----=_001_NextPart262517546157_=----"
X-ClientProxiedBy: HK2PR03CA0065.apcprd03.prod.outlook.com (2603:1096:202:17::35) To HK0PR03MB4066.apcprd03.prod.outlook.com (2603:1096:203:9d::21)
X-Microsoft-Original-Message-ID: <202008051055480596899@hotmail.com>
MIME-Version: 1.0
X-MS-Exchange-MessageSentRepresentingType: 1
Received: from cmcc-PC (183.243.251.88) by HK2PR03CA0065.apcprd03.prod.outlook.com (2603:1096:202:17::35) with Microsoft SMTP Server (version=TLS1_1, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA) id 15.20.3261.13 via Frontend Transport; Wed, 5 Aug 2020 08:32:44 +0000
X-Priority: 3
X-Has-Attach: no
X-Mailer: Foxmail 7.2.9.156[cn]
X-Microsoft-Original-Message-ID: <202008051055480596899@hotmail.com>
X-TMN: [+nBg8BP271Zs411+XiZyfJT+GgEHuxAq]
X-MS-PublicTrafficType: Email
X-IncomingHeaderCount: 48
X-EOPAttributedMessage: 0
X-MS-Office365-Filtering-Correlation-Id: 4c6d0c5a-7912-4a94-a8cb-08d8391a209c
X-MS-TrafficTypeDiagnostic: HK2APC01HT102:
X-Microsoft-Antispam: BCL:0;
X-Microsoft-Antispam-Message-Info: KxlC1QRuzUpF0tcN8dVaWc2QRpphIa8cJ+TqBtHv7nm/EXNbpb1pMMdTXiElS0du7gM87BLXqL245YxJ8nlJyP1Aaby2EzBn4iY9apT2ytFDhxqnbIujj00MBxEHBVhVUxCYHlzEb/MpLr/6I4Dh2hCo1tpQXAa9p1x6TxMdYk1bTuXmXftCjF0EafeusjDsnIGzQCqS/00jBX3ZF7JaoA==
X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:0; SRV:; IPV:NLI; SFV:NSPM; H:HK0PR03MB4066.apcprd03.prod.outlook.com; PTR:; CAT:NONE; SFTY:; SFS:; DIR:OUT; SFP:1901;
X-MS-Exchange-AntiSpam-MessageData: 6StB2E7FejFrEHm0QSUwc+P/CQ2cyEZkUE8fobX8dkHPgVYZmce+/1RIIUvShtYPXLjSkGVVhor4cVaodbKvczrbRvuGLxhgeAqMV2hbmVolHv+jHrEsL8VzSU+k2zGCQ0LQ1yV4Eed/hnQ8s9RGKQ==
X-OriginatorOrg: hotmail.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 4c6d0c5a-7912-4a94-a8cb-08d8391a209c
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Aug 2020 08:32:45.7332 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-CrossTenant-Id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa
X-MS-Exchange-CrossTenant-AuthSource: HK2APC01FT011.eop-APC01.prod.protection.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Anonymous
X-MS-Exchange-CrossTenant-FromEntityHeader: Internet
X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg: 00000000-0000-0000-0000-000000000000
X-MS-Exchange-Transport-CrossTenantHeadersStamped: HK2APC01HT102
Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/OBP_NvhGBxpEwEH1JLHdviL3sJQ>
Subject: [spring] Comments on SR policy
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, 05 Aug 2020 08:32:55 -0000

Dear authors and all,

Please consider the following comments.
1. Do you think it is ok to add one more segment type for the segment list to incorporate the segment for Layer 2 bundle members? Please refer to rfc8668.
2. For per flow steering to a policy, why do we limit the array index to 0 to 7?  I think this is implementation specific and the number of paths in an array depends on the application scenario. I am not sure whether or not 8 paths is enough for all scenarios.
3. For protection in section 9.1, it is better to add some text like "the local protection may not satisfy the SLA requirements or the path constrains for the policy" when an SR Policy is built on the basis of TI-LFA protected IGP segments.

Best Regards,
Zhenqiang Li


li_zhenqiang@hotmail.com

v2.23.0 | Report a Bug | By Email