[PMOL] Comments on draft-akhter-opsawg-perfmon-ipfix-02
"Jan Novak (janovak)" <janovak@cisco.com> Tue, 22 May 2012 08:58 UTC
Return-Path: <janovak@cisco.com>
X-Original-To: pmol@ietfa.amsl.com
Delivered-To: pmol@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C5E4221F853D; Tue, 22 May 2012 01:58:05 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -10.599
X-Spam-Level:
X-Spam-Status: No, score=-10.599 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, RCVD_IN_DNSWL_HI=-8]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tO56jk7CT555; Tue, 22 May 2012 01:58:05 -0700 (PDT)
Received: from ams-iport-1.cisco.com (ams-iport-1.cisco.com [144.254.224.140]) by ietfa.amsl.com (Postfix) with ESMTP id 7ABFE21F84FC; Tue, 22 May 2012 01:58:04 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=janovak@cisco.com; l=2864; q=dns/txt; s=iport; t=1337677085; x=1338886685; h=mime-version:content-transfer-encoding:subject:date: message-id:in-reply-to:references:from:to:cc; bh=mJ5YAiuzwuVtKnAZUc2+/OUsXwOz0bApdbjZL33z1iM=; b=iJt6R807NLHSr+A4ld+ZHSgy4xy6OZ/M2+sqNEkuKXgu0iFaf2CzgbJe P6lpo8dRkG4+8Q59Gr2Yj/SnrrS+sBNc4i5Vm25tqMbsZwPrlP3MzLJXb xFlJ9a1I0D9BN1daxO1Vdt1JDs4RJvRtHgUJtbb7m1azd1n8K69c4PNmn 0=;
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: Av4EAJhUu0+Q/khL/2dsb2JhbABEtBSBB4IWAQEEEgEdCj8QAgEqBhgGAVYBAQQBGhqHbJ4PoBSLG4RHYgOjJ4FkgmuBVA
X-IronPort-AV: E=Sophos;i="4.75,637,1330905600"; d="scan'208";a="138295200"
Received: from ams-core-2.cisco.com ([144.254.72.75]) by ams-iport-1.cisco.com with ESMTP; 22 May 2012 08:58:02 +0000
Received: from xbh-ams-101.cisco.com (xbh-ams-101.cisco.com [144.254.74.71]) by ams-core-2.cisco.com (8.14.3/8.14.3) with ESMTP id q4M8w24e024362; Tue, 22 May 2012 08:58:02 GMT
Received: from xmb-ams-212.cisco.com ([144.254.75.23]) by xbh-ams-101.cisco.com with Microsoft SMTPSVC(6.0.3790.4675); Tue, 22 May 2012 10:58:02 +0200
X-MimeOLE: Produced By Microsoft Exchange V6.5
Content-class: urn:content-classes:message
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
Date: Tue, 22 May 2012 10:58:00 +0200
Message-ID: <C95CC96B171AF24CA1BB6CA3C52D0BA001FEED0A@XMB-AMS-212.cisco.com>
In-Reply-To: <201205161453.q4GErZNl015927@alpd052.aldc.att.com>
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
Thread-Topic: Comments on draft-akhter-opsawg-perfmon-ipfix-02
Thread-Index: Ac0zc8BXTR41oCKqTcOQDS4l95WyzAEhILoQ
References: <201205161453.q4GErZNl015927@alpd052.aldc.att.com>
From: "Jan Novak (janovak)" <janovak@cisco.com>
To: "Aamer Akhter (aakhter)" <aakhter@cisco.com>, ipfix@ietf.org, opsawg@ietf.org
X-OriginalArrivalTime: 22 May 2012 08:58:02.0093 (UTC) FILETIME=[FE4479D0:01CD37F8]
Cc: pmol@ietf.org
Subject: [PMOL] Comments on draft-akhter-opsawg-perfmon-ipfix-02
X-BeenThere: pmol@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: Performance Metrics Directorate list <pmol.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/pmol>, <mailto:pmol-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/pmol>
List-Post: <mailto:pmol@ietf.org>
List-Help: <mailto:pmol-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/pmol>, <mailto:pmol-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 22 May 2012 08:58:06 -0000
Hi Amer, I have reviewed your draft draft-akhter-opsawg-perfmon-ipfix-02.txt. There seems to be a lot of text overlap with your methodology document - section 1,3, 4 could probably be abbreviated or omitted leaving the document just with raw IPFIX IE specifications or just add the IE specification as sub-sections or a new section into the first document ?? Section 2 uses definitions from RFC5610 - I think those you use there are defined in RFC5102 as DataTypeSemantic, units and range while RFC5610 specifies how this information should be exported - here you are defining the IE itself so you should use the definitions from RFC5102 Also the methodology documents already speaks in terms of IPFIX IEs while you are trying to specify some performance metrics - the methodology could have names and an exact definitions of the metric and then a reference which IE represents the particular metric RFC5102 section 2.1 specifies a template for IEs with a MUST so the MUST entries should be literally followed in your IEs spec - namely name, elementID, description, dataType and status. RFC5102 section 2.1 specifies MAY entries for the template - like DataTypeSemantic, units, name - might be preferable to follow the naming as well You interchanged ElementId with name - ElementId should be the numerical ID of the particular IE, while name of the IE is actually missing Instead of using Observation Point - wouldn't be the scope of the element appropriate ?? Or if not then scope should be actually added - are the metrics (like perfPacketLoss) applicable to all the traffic seen by the UUT (or more specifically passing through the Observation Point) or to just individual flows ?? This should also be part of the particular metric definition. Will your IEs be enterprise IEs or IANA ones ?? Section 4.1.2 - Units packets ?? Section 4.1.3 - there is a mis-match between the definition and the range - it should be limited to 0 - 100 + a value when the rate is unknown This definition is also missing in section 4.1.3 of your methodology Sections 4.3.1, 4.3.2 - the values are just numbers/ids so units shouldn't be octets but "none" ?? The IPFIX guys here have had few discussions regarding IE definitions explosions with all the needs like this - have you thought using RFC6313 now (structured data) ?? I am not sure I would use RFC2321 as a reference work :-). huic-ipfix-sipfix is not a work in progress - the ID expired 3 years ago. ie-doctors is a WG doc version 2 now - draft-ietf-ipfix-ie-doctors-02.txt pmol-metrics-framework is RFC 6390 The document would benefit from running it through spell checker. Rgds, Jan The climate of Edinburgh is such that the weak succumb young .... and the strong envy them. Dr. Johnson
- [PMOL] Comments on draft-akhter-opsawg-perfmon-ip… Jan Novak (janovak)
- Re: [PMOL] Fwd: Comments on draft-akhter-opsawg-p… Jan Novak (janovak)
- [PMOL] Fwd: Comments on draft-akhter-opsawg-perfm… Al Morton
- Re: [PMOL] Comments on draft-akhter-opsawg-perfmo… Aamer Akhter (aakhter)
- Re: [PMOL] Comments on draft-akhter-opsawg-perfmo… Jan Novak (janovak)