Re: [Pce] Follow up about my question on the mic

"Mike Koldychev (mkoldych)" <mkoldych@cisco.com> Tue, 27 July 2021 12:41 UTC

Return-Path: <mkoldych@cisco.com>
X-Original-To: pce@ietfa.amsl.com
Delivered-To: pce@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E1F4D3A24FD; Tue, 27 Jul 2021 05:41:01 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -9.595
X-Spam-Level:
X-Spam-Status: No, score=-9.595 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, HTML_MESSAGE=0.001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_NONE=0.001, URIBL_BLOCKED=0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=unavailable autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com header.b=PIQwGwM2; dkim=pass (1024-bit key) header.d=cisco.onmicrosoft.com header.b=Oj3T89aY
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 xJ3usaufm1Ul; Tue, 27 Jul 2021 05:40:57 -0700 (PDT)
Received: from alln-iport-7.cisco.com (alln-iport-7.cisco.com [173.37.142.94]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 4B37B3A24FC; Tue, 27 Jul 2021 05:40:57 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=13187; q=dns/txt; s=iport; t=1627389657; x=1628599257; h=from:to:cc:subject:date:message-id:references: in-reply-to:mime-version; bh=6wsfpmXBmtlvt4gzdWqNOhsUkeppqOg0RV8Zq55pHVI=; b=PIQwGwM2FSBQnGceoQiJPq/KLOvgD1nnDF+osYy0gyJEHZDGhD2RyP/+ QbRJi22WYsq1YGzUE5dstlsfizxf8sC162EBAFGnLnQgYuNFGNoOXcSG5 HLsq3l+Ajr5BgurK7l5om4M33k5EF9GFw60rywsV1Br9GMmerg47mn9Rg k=;
X-IPAS-Result: =?us-ascii?q?A0AkAADR/f9gl4UNJK1aHQEBAQEJARIBBQUBQIFFCAELA?= =?us-ascii?q?YEiMFF+WhYhMYgPA4RZYIheA5UyhQCBLoElA1QLAQEBDQEBNwoEAQGEWAKCf?= =?us-ascii?q?QIlNAkOAgQBAQEBAwIDAQEBAQUBAQUBAQECAQYEFAEBAQEBAQEBcoVoDYZCA?= =?us-ascii?q?QEBBBIbEwEBNwEPAgEIEQQBASgHMhQJCAEBBAENBQgagk8BgX5XAy8BDpwPA?= =?us-ascii?q?YE6AoofeIE0gQGCBwEBBgQEgToCDkGDNRiCNAMGgToBgnuEDYZlJxyBSUSBF?= =?us-ascii?q?UOCMjA+gmIBAQIBgV8rCYMXgi6EBC8iAntSEQEJSgiRTIwejEN3khYKgyaKN?= =?us-ascii?q?5B4gyoSg2OLX5chhhePdIw0k2aEdAIEAgQFAg4BAQaBYDmBW3AVgyRQGQ6OH?= =?us-ascii?q?xmDWIUUhUpzAjYCBgsBAQMJiw8BAQ?=
IronPort-PHdr: A9a23:2ueNURCLDMt+egr5Gc8oUyQVhhdPi9zP1kY99oEmjb1Ob63l+I7te kfZtr1hj17MCIPc7f8My+/bqLvpVmFI55Gd+GsDf5pBW15g640WkgUsDdTDBRj9K/jnPDAhH cJNVEJsuXahPg5eHpW2a1jbuHbn6zkUF132PhZ0IeKgHInUgoy32um+9oeVbR9PgW+2YKh5K 1O9qgCC3vQ=
IronPort-HdrOrdr: A9a23:/k9e6KirK0stQCzRYoaJ48UfL3BQXjIji2hC6mlwRA09TyXBrb HcoB1673XJYDZ4YgBapTnyAtjzfZq8z+893WB1B9yftWbdyRSVxe1ZnPLfKnjbal3DH+Nmus ddmstFeZXN5DpB/LjHCWCDer5Asbz3lNHO9IHjIm9WIG1XguNbnnZE422gYzdLrXx9dOYE/e 2nl7d6TlSbCAwqhp3RPAhPYwHEnbO79+OFXfdMPW9T1ODHt0Ld1Fb3fiLoqSv2fQk/t4sfzQ ==
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-AV: E=Sophos;i="5.84,273,1620691200"; d="scan'208,217";a="729583118"
Received: from alln-core-11.cisco.com ([173.36.13.133]) by alln-iport-7.cisco.com with ESMTP/TLS/DHE-RSA-SEED-SHA; 27 Jul 2021 12:40:56 +0000
Received: from mail.cisco.com (xbe-aln-007.cisco.com [173.36.7.22]) by alln-core-11.cisco.com (8.15.2/8.15.2) with ESMTPS id 16RCeuEP005529 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=OK); Tue, 27 Jul 2021 12:40:56 GMT
Received: from xfe-rtp-002.cisco.com (64.101.210.232) by xbe-aln-007.cisco.com (173.36.7.22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Tue, 27 Jul 2021 07:40:55 -0500
Received: from xfe-rcd-005.cisco.com (173.37.227.253) by xfe-rtp-002.cisco.com (64.101.210.232) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Tue, 27 Jul 2021 08:40:54 -0400
Received: from NAM12-BN8-obe.outbound.protection.outlook.com (72.163.14.9) by xfe-rcd-005.cisco.com (173.37.227.253) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15 via Frontend Transport; Tue, 27 Jul 2021 07:40:54 -0500
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=bU03HCWRTKwCd4vxFMXo5RjD0jagXbG0DGN7Pi0oEyplkixjbzQKGZs2pq3Z9WD/yzO8ZrgVL6Iy+a+bqnbUw4jmyTxdOvOeJTyBAEm3oEv4FpUqBMIULrADj0FjijhYricUZtcUWD1MPlutrFK8GdxotjD3s6YgooHHoYyEcSHY2nQY4tZ32lXeWTsXwxs5Aj/6JSFWC40Lsq1TRCFHSm6ykk4W/KkOIVfk/4lpHFGWWhl/21nBNJ0zhpZN4h70v9l07hSoRVpKMkBqMGmdSUugy7AcKEclSzRp/USjqJSUupiBvJjz+BlCJFYJW1kbYAtrtRa5QOjikN4zW8u38A==
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=96bItkMsmRK0bW4EREl7MQ9/E+FTwHwswD1qascri+Y=; b=itHr0+rcyXvFrM3RuWf80nfx7b7dimm94O+8fhMfgY+436/q/VnEfORue//v04M6cbv0Mu0RS1Tg3SbuKN8Kypr/t8AOV+M9PfC6D+JPXO2P2pd+PkwouSFdgzYI+7lysoyjdOiB47IkwdAAZLZnpSvv5ru3pfQcX8BBcRxSfkSdMP7ZK5OS4mWJcH8GKtUzhpXWxz7OesyAZY8hvkp16fbBRp9474ijxOq9wAjrQbD2FKofc+dS4e9hTqfvPXxq6hJonWp3xPcKBZXWUx+7dQF4QP89ZmTozTNOu5ZC21K6BCZCbUjlJyQtlM8YNJgWXUolCd7KbZ3w2ejU/ocXAA==
ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=cisco.com; dmarc=pass action=none header.from=cisco.com; dkim=pass header.d=cisco.com; arc=none
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cisco.onmicrosoft.com; s=selector2-cisco-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=96bItkMsmRK0bW4EREl7MQ9/E+FTwHwswD1qascri+Y=; b=Oj3T89aYSPhqx9V7+q3P189jKA9TJgZzzUo3ZU7/iLRUkHi3fIvZ1Z2QQCSZiJT6MRW2fHwTWHU3ZTDUMbJjI0wgMghaRAq4V9XpC0PyJOw8C7tg7iTWoc6SzkdBcl/hWhddZFz90X/3xUwE2lac3biVjY76uaY+el7bDi3Hp7g=
Received: from DM6PR11MB3802.namprd11.prod.outlook.com (2603:10b6:5:143::30) by DM6PR11MB2601.namprd11.prod.outlook.com (2603:10b6:5:ce::27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4352.29; Tue, 27 Jul 2021 12:40:53 +0000
Received: from DM6PR11MB3802.namprd11.prod.outlook.com ([fe80::69c6:1b3c:1597:cb37]) by DM6PR11MB3802.namprd11.prod.outlook.com ([fe80::69c6:1b3c:1597:cb37%6]) with mapi id 15.20.4352.031; Tue, 27 Jul 2021 12:40:53 +0000
From: "Mike Koldychev (mkoldych)" <mkoldych@cisco.com>
To: Aijun Wang <wangaijun@tsinghua.org.cn>, "'Mike Koldychev (mkoldych)'" <mkoldych=40cisco.com@dmarc.ietf.org>, "draft-ietf-pce-pcep-extension-native-ip@ietf.org" <draft-ietf-pce-pcep-extension-native-ip@ietf.org>
CC: "pce@ietf.org" <pce@ietf.org>
Thread-Topic: [Pce] Follow up about my question on the mic
Thread-Index: AdeCa8+8Jy4aJibnSPetL3QHEo40oAAJvlEAABP+wEA=
Date: Tue, 27 Jul 2021 12:40:53 +0000
Message-ID: <DM6PR11MB3802710090963651BCCA21F0D3E99@DM6PR11MB3802.namprd11.prod.outlook.com>
References: <DM6PR11MB38021A1CCCC2C52CA2DA8B94D3E89@DM6PR11MB3802.namprd11.prod.outlook.com> <06fc01d78292$c9b30df0$5d1929d0$@tsinghua.org.cn>
In-Reply-To: <06fc01d78292$c9b30df0$5d1929d0$@tsinghua.org.cn>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
authentication-results: tsinghua.org.cn; dkim=none (message not signed) header.d=none;tsinghua.org.cn; dmarc=none action=none header.from=cisco.com;
x-ms-publictraffictype: Email
x-ms-office365-filtering-correlation-id: 67811dc3-ec92-4f6a-ea65-08d950fbc5cb
x-ms-traffictypediagnostic: DM6PR11MB2601:
x-microsoft-antispam-prvs: <DM6PR11MB2601DF4EE267140944E11DD8D3E99@DM6PR11MB2601.namprd11.prod.outlook.com>
x-ms-oob-tlc-oobclassifiers: OLM:9508;
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:DM6PR11MB3802.namprd11.prod.outlook.com; PTR:; CAT:NONE; SFS:(346002)(376002)(136003)(396003)(366004)(39860400002)(64756008)(66556008)(66476007)(66446008)(7696005)(71200400001)(5660300002)(166002)(8676002)(9686003)(9326002)(55016002)(2906002)(52536014)(83380400001)(966005)(478600001)(66946007)(76116006)(316002)(38100700002)(122000001)(4326008)(186003)(53546011)(6506007)(33656002)(8936002)(86362001)(26005)(66574015)(110136005)(38070700004); DIR:OUT; SFP:1101;
x-ms-exchange-antispam-messagedata-chunkcount: 1
x-ms-exchange-antispam-messagedata-0: =?us-ascii?Q?9gzHZdqjfQO6/38ze4kX3mNtUQo0ADVkppNVt5J24g86777HRzU8Et4FatlO?= =?us-ascii?Q?5oSwQXstNFUDdRrEtpPNYBZM4DRCSunJw2J6eKW4DLzuRu401EDdYVVjo2tN?= =?us-ascii?Q?oS604tDahF3XqvYd7KmJYERvuCZth316EEopA6np4mriL5H7ltkghBfYyQ/y?= =?us-ascii?Q?cmz2Gban7CzJKZQJsajKVi6YvjnhZvF/zXisSgBhPdz1O4uenOE5hb2Rnqr6?= =?us-ascii?Q?Lkus3TO8Ba1XAG7+O+fysTNpdX+ra7Mq5Pz/dSBc/dD9BjnkJMCemO8FumS2?= =?us-ascii?Q?zFDoPfhSV/MCuCXBovjjRD9n0iz0NcXBfEZiGZI8i6Frc3cHYdvjqxDM1wUW?= =?us-ascii?Q?BI3cvUOCnL3sZg98kVs0TE2HE+drs6M0mtqU42hwHxorDV1JZAQXLPBQ/np6?= =?us-ascii?Q?/gH2gUPGcwVYfUaMUxofRgf5qavJriuWuz4uPXunplqh037ZHmu3c9zP1WFF?= =?us-ascii?Q?RiFu4DxhYqKM1zXxT/BggqNETPBahAtSeohxLF/tZ8KvGNcZgpzkQQPQBBtP?= =?us-ascii?Q?XcuCclSAMFWgqz6ZADqXCknl+c6ZCoG3x8QYPUbIV8+lvULHg7wUi9ItmkG4?= =?us-ascii?Q?yxhWYRVMWr4eNWD1x4PtCUUAUraJfV3y+LJIsz+etKbjfdCV2qysB+/6ZC/v?= =?us-ascii?Q?bwvgZL4oCw2A5EYe2M4wbLtaCIwdE5tki1LQvLxhCDdaqU1RWrTU1kPYtrd6?= =?us-ascii?Q?sFH1wHmD7nYnB/+zpSGV4T8i9+qAZbXD8PE3lnoDk+Q6w4/1deocf3sntbJw?= =?us-ascii?Q?YIBjlitsfNCj2zoXFoU8H4XJJq89ZaB6e2fiWMaHdRVlZsbbzWv38M5F7vm9?= =?us-ascii?Q?DX3FCrpD7b22gA4gfHFc++sQU8Bn7siox1XUUbqHBuFxaE9apF6+iYGgStIq?= =?us-ascii?Q?64XDjy1VCuGnDl+wzPZprchBWNIzwUb7I4mX6ls/vO5vn9/gv8IggM9v2TWB?= =?us-ascii?Q?SqLaCuL3NvlqBD2B7NIGy+FuSLGi/AGYAMARxkBQCNZP7yTV7syA0xW6CNrq?= =?us-ascii?Q?RiIQGgY6nKAY3tXIZWYmhsO5DkdfSMYfCPJgrfnu/rG8hnL6robIO49qBdKy?= =?us-ascii?Q?4FPICtbsN07RWiSagV13AKHqcwOQzCIyI32ZNP/ciAYVu7G05kEHFc/scGw0?= =?us-ascii?Q?NNR3Xdhm8BMZGyCUP01VuMLKA4MEh21FzLksvvFHmbvxpCV+R4LsmR3jihar?= =?us-ascii?Q?3seaJUcaw4Mz4ypuPcxwzJxOE1G9HIJpNirWTNMKrMrt26/ZtdzOdOzZA0QN?= =?us-ascii?Q?DylNOp+Yv60eJNIvhXQALoo81zuN9ScOyGMN1GDIysWOhNgIrsvrbFrS7TGL?= =?us-ascii?Q?pe1ofVzFbBD9CV0CJCzYKcGO?=
x-ms-exchange-transport-forked: True
Content-Type: multipart/alternative; boundary="_000_DM6PR11MB3802710090963651BCCA21F0D3E99DM6PR11MB3802namp_"
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: DM6PR11MB3802.namprd11.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 67811dc3-ec92-4f6a-ea65-08d950fbc5cb
X-MS-Exchange-CrossTenant-originalarrivaltime: 27 Jul 2021 12:40:53.4724 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 5ae1af62-9505-4097-a69a-c1553ef7840e
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: H3F9fOLif7GJpGkVLPr7OuFV1wB1jyWDW634NoBlPdEnRfBEHXCUsmL5F6n7rdN5iHPFNlWAjkLQL01t59SAPQ==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR11MB2601
X-OriginatorOrg: cisco.com
X-Outbound-SMTP-Client: 173.36.7.22, xbe-aln-007.cisco.com
X-Outbound-Node: alln-core-11.cisco.com
Archived-At: <https://mailarchive.ietf.org/arch/msg/pce/CosG3uZ5ROVYun3hdHwS3l2aNjQ>
Subject: Re: [Pce] Follow up about my question on the mic
X-BeenThere: pce@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Path Computation Element <pce.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/pce>, <mailto:pce-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/pce/>
List-Post: <mailto:pce@ietf.org>
List-Help: <mailto:pce-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/pce>, <mailto:pce-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 27 Jul 2021 12:41:02 -0000

Hi Aijun,

Thanks for clarifying Q1.

Regarding Q2, you can probably mention that in the draft. Multiple EPR objects MAY be sent for the same destination, which results in ECMP to that destination.

Thanks,
Mike.

From: Pce <pce-bounces@ietf.org> On Behalf Of Aijun Wang
Sent: Monday, July 26, 2021 10:55 PM
To: 'Mike Koldychev (mkoldych)' <mkoldych=40cisco.com@dmarc.ietf.org>rg>; draft-ietf-pce-pcep-extension-native-ip@ietf.org
Cc: pce@ietf.org
Subject: Re: [Pce] Follow up about my question on the mic

Hi, Mike:

Thanks for your questions. Please see the replies inline.
If you have more questions based on the followings answers, we can discuss them accordingly.

Best Regards

Aijun Wang
China Telecom

From: pce-bounces@ietf.org<mailto:pce-bounces@ietf.org> <pce-bounces@ietf.org<mailto:pce-bounces@ietf.org>> On Behalf Of Mike Koldychev (mkoldych)
Sent: Tuesday, July 27, 2021 6:36 AM
To: draft-ietf-pce-pcep-extension-native-ip@ietf.org<mailto:draft-ietf-pce-pcep-extension-native-ip@ietf.org>
Cc: pce@ietf.org<mailto:pce@ietf.org>
Subject: [Pce] Follow up about my question on the mic

Hi Authors,

Just following up about my 2 questions during the PCE WG session about https://datatracker.ietf.org/doc/html/draft-ietf-pce-pcep-extension-native-ip-14.

Question 1: Is every prefix going to be advertised (via the RR) to every node in the native-ip domain, even if those nodes are never on-path for that prefix?
[WAJ] Yes, the behavior of RR is unchanged.
If my understanding is correct, the "BGP peer nodes" (R1 & R7 in Figure 4) would receive the PPA (Prefixes) and would inject these prefixes into the RR. The RR would then flood these prefixes (as regular BGP IP routes) to every single node in the domain (R2, R4, R5, R6) with the next-hop being set to R1 or R7. Please let me know if my understanding is correct or am I missing something. So even though R5 and R6 in this example are off-path, they would receive the prefix route from the RR?
[WAJ] Yes, R5 and R6 will also receive such prefix advertisements via the normal RR behavior. But on router R5&R6, the route to the BGP nexthop (R1&R7) is learned from the IGP protocol, not from the EPR(Explicit Peer Route) Object. Then after the recursive process, the forwarding path on R5&R6 will be along the normal non-optimal path.

Question 2: Have you thought about ECMP/UCMP (Equal/Unequal Cost Multipath)? How would you implement it in your protocol?
[WAJ] Currently, we consider only the ECMP application. If PCE wants to deploy multiple ECMP paths between two adjacent nodes, it can send two EPR Objects to the corresponding PCC, with the "Route Priority" field be set to the same value.

Thanks,
Mike.