[Dots] A couple of comments on draft-fu-ipfix-network-security-00

Dave Dolson <ddolson@sandvine.com> Tue, 24 March 2015 19:42 UTC

Return-Path: <ddolson@sandvine.com>
X-Original-To: dots@ietfa.amsl.com
Delivered-To: dots@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 9B69B1AC44D for <dots@ietfa.amsl.com>; Tue, 24 Mar 2015 12:42:41 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.909
X-Spam-Level:
X-Spam-Status: No, score=-1.909 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, T_RP_MATCHES_RCVD=-0.01] autolearn=ham
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 eYZXLe38Tx92 for <dots@ietfa.amsl.com>; Tue, 24 Mar 2015 12:42:39 -0700 (PDT)
Received: from mail1.sandvine.com (mail1.sandvine.com [64.7.137.165]) by ietfa.amsl.com (Postfix) with ESMTP id 7C04E1A8FD2 for <dots@ietf.org>; Tue, 24 Mar 2015 12:41:10 -0700 (PDT)
Received: from BLR-EXCHP-2.sandvine.com (192.168.196.172) by WTL-EXCHP-3.sandvine.com (192.168.196.177) with Microsoft SMTP Server (TLS) id 14.3.195.1; Tue, 24 Mar 2015 15:41:10 -0400
Received: from WTL-EXCHP-2.sandvine.com ([fe80::68ac:f071:19ff:3455]) by blr-exchp-2.sandvine.com ([fe80::6c6d:7108:c63c:9055%14]) with mapi id 14.03.0181.006; Tue, 24 Mar 2015 15:41:09 -0400
From: Dave Dolson <ddolson@sandvine.com>
To: "dots@ietf.org" <dots@ietf.org>
Thread-Topic: A couple of comments on draft-fu-ipfix-network-security-00
Thread-Index: AdBmaKrAYhdr5ZcqS7GJlH2fvoLbrA==
Date: Tue, 24 Mar 2015 19:41:08 +0000
Message-ID: <E8355113905631478EFF04F5AA706E9830B995AB@wtl-exchp-2.sandvine.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-originating-ip: [192.168.194.252]
Content-Type: multipart/alternative; boundary="_000_E8355113905631478EFF04F5AA706E9830B995ABwtlexchp2sandvi_"
MIME-Version: 1.0
Archived-At: <http://mailarchive.ietf.org/arch/msg/dots/iSBCoRBzi2Mk1BY0qltFDP13uFQ>
Subject: [Dots] A couple of comments on draft-fu-ipfix-network-security-00
X-BeenThere: dots@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: "List for discussion of DDoS Open Threat Signaling \(DOTS\) technology and directions." <dots.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/dots>, <mailto:dots-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/dots/>
List-Post: <mailto:dots@ietf.org>
List-Help: <mailto:dots-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dots>, <mailto:dots-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 24 Mar 2015 19:42:41 -0000

I haven't read the entire document, but I noticed a few things, some editorial.

Section 3.1.


-          Why no mention of ipv6 addresses or prefixes? Consider providing *only* ipv6, with IPv4-mapped IPv6 address (from RFC 2373) for IPv4.


-          There is an inconsistent use of 32-bit and 64-bit counters. If tcpSynTotalCount is 64 bits, probably octetUpstreamCount and octetDownstreamCount should also be 64 bits.


-          I don't understand how absolute timestamps flowStartMilliseconds and flowEndMilliseconds can be only 32-bit numbers.


-          Are fragmentIncomplete and fragmentFirstTooShort, etc. intended to be counters? They are 32-bits, but do not have "count" in their names.



-          fragmentOffestError is spelled wrong. Should be fragmentOffsetError. (or fragmentOffsetErrorCount).




David Dolson
Senior Software Architect
Sandvine