IETF Logo Mail Archive

Re: [v6ops] new draft: draft-taylor-v6ops-fragdrop

"Templin, Fred L" <Fred.L.Templin@boeing.com> Tue, 16 October 2012 18:43 UTC

Return-Path: <Fred.L.Templin@boeing.com>
X-Original-To: v6ops@ietfa.amsl.com
Delivered-To: v6ops@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C14AF21F8A29 for <v6ops@ietfa.amsl.com>; Tue, 16 Oct 2012 11:43:01 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.424
X-Spam-Level:
X-Spam-Status: No, score=-2.424 tagged_above=-999 required=5 tests=[AWL=0.175, BAYES_00=-2.599]
Received: from mail.ietf.org ([64.170.98.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 21fNDEzvKvl3 for <v6ops@ietfa.amsl.com>; Tue, 16 Oct 2012 11:43:01 -0700 (PDT)
Received: from blv-mbsout-02.boeing.com (blv-mbsout-02.boeing.com [130.76.32.232]) by ietfa.amsl.com (Postfix) with ESMTP id 4B3A121F8A1D for <v6ops@ietf.org>; Tue, 16 Oct 2012 11:42:58 -0700 (PDT)
Received: from blv-mbsout-02.boeing.com (localhost.localdomain [127.0.0.1]) by blv-mbsout-02.boeing.com (8.14.4/8.14.4/DOWNSTREAM_MBSOUT) with ESMTP id q9GIgvnt009691 for <v6ops@ietf.org>; Tue, 16 Oct 2012 11:42:57 -0700
Received: from XCH-NWHT-06.nw.nos.boeing.com (xch-nwht-06.nw.nos.boeing.com [130.247.25.110]) by blv-mbsout-02.boeing.com (8.14.4/8.14.4/UPSTREAM_MBSOUT) with ESMTP id q9GIgup4009680 (version=TLSv1/SSLv3 cipher=RC4-MD5 bits=128 verify=OK); Tue, 16 Oct 2012 11:42:57 -0700
Received: from XCH-NW-01V.nw.nos.boeing.com ([130.247.64.120]) by XCH-NWHT-06.nw.nos.boeing.com ([130.247.25.110]) with mapi; Tue, 16 Oct 2012 11:42:57 -0700
From: "Templin, Fred L" <Fred.L.Templin@boeing.com>
To: Nick Hilliard <nick@inex.ie>
Date: Tue, 16 Oct 2012 11:42:56 -0700
Thread-Topic: [v6ops] new draft: draft-taylor-v6ops-fragdrop
Thread-Index: Ac2ry6uSHrtDFLlAQiu1oOTOCFvu9gAAaIHA
Message-ID: <E1829B60731D1740BB7A0626B4FAF0A65E0DEDF3C3@XCH-NW-01V.nw.nos.boeing.com>
References: <201210161245.q9GCj0i26478@ftpeng-update.cisco.com> <E1829B60731D1740BB7A0626B4FAF0A65E0DEDF3A2@XCH-NW-01V.nw.nos.boeing.com> <507DA6A3.20807@inex.ie>
In-Reply-To: <507DA6A3.20807@inex.ie>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
acceptlanguage: en-US
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
X-TM-AS-MML: No
Cc: "v6ops@ietf.org" <v6ops@ietf.org>, "draft-taylor-v6ops-fragdrop@tools.ietf.org" <draft-taylor-v6ops-fragdrop@tools.ietf.org>
Subject: Re: [v6ops] new draft: draft-taylor-v6ops-fragdrop
X-BeenThere: v6ops@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: v6ops discussion list <v6ops.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/v6ops>, <mailto:v6ops-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/v6ops>
List-Post: <mailto:v6ops@ietf.org>
List-Help: <mailto:v6ops-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/v6ops>, <mailto:v6ops-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 16 Oct 2012 18:43:02 -0000

> -----Original Message-----
> From: Nick Hilliard [mailto:nick@inex.ie]
> Sent: Tuesday, October 16, 2012 11:26 AM
> To: Templin, Fred L
> Cc: fred@cisco.com; v6ops@ietf.org; draft-taylor-v6ops-
> fragdrop@tools.ietf.org
> Subject: Re: [v6ops] new draft: draft-taylor-v6ops-fragdrop
> 
> On 16/10/2012 19:20, Templin, Fred L wrote:
> > This report is troubling to me.
> 
> yeah, i suspect that the root cause is that it's difficult to process
> arbitrarily positioned tlv based headers in hardware.

Why not just let non-initial fragments through and then forward
or don't forward the initial fragment depending on whether it
contains enough information in tlv headers to permit a filtering
decision?

Fred
fred.l.templin@boeing.com

> Nick

v2.23.0 | Report a Bug | By Email