From internet-drafts@ietf.org Mon Jan 9 08:04:16 2012 Return-Path: X-Original-To: forces@ietfa.amsl.com Delivered-To: forces@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 081EE11E8087; Mon, 9 Jan 2012 08:04:16 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -102.565 X-Spam-Level: X-Spam-Status: No, score=-102.565 tagged_above=-999 required=5 tests=[AWL=0.034, BAYES_00=-2.599, USER_IN_WHITELIST=-100] 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 bCLhIYraLzhR; Mon, 9 Jan 2012 08:04:11 -0800 (PST) Received: from ietfa.amsl.com (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 37B8A21F866E; Mon, 9 Jan 2012 08:04:11 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable From: internet-drafts@ietf.org To: i-d-announce@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 3.64p1 Message-ID: <20120109160411.23392.61343.idtracker@ietfa.amsl.com> Date: Mon, 09 Jan 2012 08:04:11 -0800 Cc: forces@ietf.org Subject: [forces] I-D Action: draft-ietf-forces-interop-03.txt X-BeenThere: forces@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: ForCES WG mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 Jan 2012 16:04:16 -0000 A New Internet-Draft is available from the on-line Internet-Drafts director= ies. This draft is a work item of the Forwarding and Control Element Separa= tion Working Group of the IETF. Title : Interoperability Report for Forwarding and Control Eleme= nt Separation (ForCES) Author(s) : Weiming Wang Kentaro Ogawa Evangelos Haleplidis Ming Gao Jamal Hadi Salim Filename : draft-ietf-forces-interop-03.txt Pages : 36 Date : 2012-01-09 This document captures test results from the second Forwarding and control Element Separation (ForCES) interoperability test which took place on February 24-25, 2011 in the Internet Technology Lab (ITL) of Zhejiang Gongshang University, China. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-forces-interop-03.txt Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ This Internet-Draft can be retrieved at: ftp://ftp.ietf.org/internet-drafts/draft-ietf-forces-interop-03.txt From internet-drafts@ietf.org Wed Jan 11 20:50:18 2012 Return-Path: X-Original-To: forces@ietfa.amsl.com Delivered-To: forces@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 762B421F85E1; Wed, 11 Jan 2012 20:50:18 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -102.562 X-Spam-Level: X-Spam-Status: No, score=-102.562 tagged_above=-999 required=5 tests=[AWL=0.037, BAYES_00=-2.599, USER_IN_WHITELIST=-100] 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 rXzf+rkNLyH3; Wed, 11 Jan 2012 20:50:17 -0800 (PST) Received: from ietfa.amsl.com (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 74A3021F8577; Wed, 11 Jan 2012 20:50:02 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable From: internet-drafts@ietf.org To: i-d-announce@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 3.64p1 Message-ID: <20120112045002.26569.46972.idtracker@ietfa.amsl.com> Date: Wed, 11 Jan 2012 20:50:02 -0800 Cc: forces@ietf.org Subject: [forces] I-D Action: draft-ietf-forces-lfb-lib-07.txt X-BeenThere: forces@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: ForCES WG mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Jan 2012 04:50:18 -0000 A New Internet-Draft is available from the on-line Internet-Drafts director= ies. This draft is a work item of the Forwarding and Control Element Separa= tion Working Group of the IETF. Title : ForCES Logical Function Block (LFB) Library Author(s) : Weiming Wang Evangelos Haleplidis Kentaro Ogawa Chuanhuang Li Halpern Joel Filename : draft-ietf-forces-lfb-lib-07.txt Pages : 103 Date : 2012-01-11 This document defines basic classes of Logical Function Blocks (LFBs) used in the Forwarding and Control Element Separation (ForCES). The basic LFB classes are defined according to ForCES FE model and ForCES protocol specifications, and are scoped to meet requirements of typical router functions and considered as the basic LFB library for ForCES. The library includes the descriptions of the LFBs and the XML definitions. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-forces-lfb-lib-07.txt Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ This Internet-Draft can be retrieved at: ftp://ftp.ietf.org/internet-drafts/draft-ietf-forces-lfb-lib-07.txt From wmwang2001@hotmail.com Wed Jan 11 21:06:35 2012 Return-Path: X-Original-To: forces@ietfa.amsl.com Delivered-To: forces@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 44CEC21F853E for ; Wed, 11 Jan 2012 21:06:35 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -0.846 X-Spam-Level: X-Spam-Status: No, score=-0.846 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, MIME_BASE64_TEXT=1.753] 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 oWdnNoO-1Vxf for ; Wed, 11 Jan 2012 21:06:34 -0800 (PST) Received: from blu0-omc4-s11.blu0.hotmail.com (blu0-omc4-s11.blu0.hotmail.com [65.55.111.150]) by ietfa.amsl.com (Postfix) with ESMTP id 9A87D21F853C for ; Wed, 11 Jan 2012 21:06:34 -0800 (PST) Received: from BLU0-SMTP445 ([65.55.111.135]) by blu0-omc4-s11.blu0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4675); Wed, 11 Jan 2012 21:06:34 -0800 X-Originating-IP: [221.12.10.218] X-Originating-Email: [wmwang2001@hotmail.com] Message-ID: Received: from ZJGSUIEE ([221.12.10.218]) by BLU0-SMTP445.phx.gbl over TLS secured channel with Microsoft SMTPSVC(6.0.3790.4675); Wed, 11 Jan 2012 21:06:32 -0800 From: "Wang,Weiming" To: References: <20120112045002.26569.46972.idtracker@ietfa.amsl.com> Date: Thu, 12 Jan 2012 13:06:25 +0800 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: base64 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5843 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 X-OriginalArrivalTime: 12 Jan 2012 05:06:32.0782 (UTC) FILETIME=[F37A8EE0:01CCD0E7] Subject: Re: [forces] I-D Action: draft-ietf-forces-lfb-lib-07.txt X-BeenThere: forces@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: ForCES WG mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Jan 2012 05:06:35 -0000 SGksDQoNClRoZSAwNyB1cGRhdGUgb2YgTEZCIGxpYiBkb2N1bWVudCBoYXMgIG1hZGUgbGl0dGxl IGNoYW5nZSBieSAwNiB2ZXJzaW9uLiBPbmx5IHRoZSBhdXRob3IncyBpbmZvcm1hdGlvbiBpcyB1 cGRhdGVkLiBQbHMgZmVlbCBmcmVlIHRvIHJldmlldyB0aGUgY29udGVudHMgZWl0aGVyIHdpdGgg IDA2IG9yIHdpdGggMDcgdmVyc2lvbnMuIA0KDQp0aGFua3MsDQpXZWltaW5nDQogDQotLS0tLSBP cmlnaW5hbCBNZXNzYWdlIC0tLS0tIA0KRnJvbTogPGludGVybmV0LWRyYWZ0c0BpZXRmLm9yZz4N Cg0KPiANCj4gQSBOZXcgSW50ZXJuZXQtRHJhZnQgaXMgYXZhaWxhYmxlIGZyb20gdGhlIG9uLWxp bmUgSW50ZXJuZXQtRHJhZnRzIGRpcmVjdG9yaWVzLiBUaGlzIGRyYWZ0IGlzIGEgd29yayBpdGVt IG9mIHRoZSBGb3J3YXJkaW5nIGFuZCBDb250cm9sIEVsZW1lbnQgU2VwYXJhdGlvbiBXb3JraW5n IEdyb3VwIG9mIHRoZSBJRVRGLg0KPiANCj4gVGl0bGUgICAgICAgICAgIDogRm9yQ0VTIExvZ2lj YWwgRnVuY3Rpb24gQmxvY2sgKExGQikgTGlicmFyeQ0KPiBBdXRob3IocykgICAgICAgOiBXZWlt aW5nIFdhbmcNCj4gICAgICAgICAgICAgICAgICAgICAgICAgIEV2YW5nZWxvcyBIYWxlcGxpZGlz DQo+ICAgICAgICAgICAgICAgICAgICAgICAgICBLZW50YXJvIE9nYXdhDQo+ICAgICAgICAgICAg ICAgICAgICAgICAgICBDaHVhbmh1YW5nIExpDQo+ICAgICAgICAgICAgICAgICAgICAgICAgICBI YWxwZXJuIEpvZWwNCj4gRmlsZW5hbWUgICAgICAgIDogZHJhZnQtaWV0Zi1mb3JjZXMtbGZiLWxp Yi0wNy50eHQNCj4gUGFnZXMgICAgICAgICAgIDogMTAzDQo+IERhdGUgICAgICAgICAgICA6IDIw MTItMDEtMTENCj4gDQo+ICAgVGhpcyBkb2N1bWVudCBkZWZpbmVzIGJhc2ljIGNsYXNzZXMgb2Yg TG9naWNhbCBGdW5jdGlvbiBCbG9ja3MgKExGQnMpDQo+ICAgdXNlZCBpbiB0aGUgRm9yd2FyZGlu ZyBhbmQgQ29udHJvbCBFbGVtZW50IFNlcGFyYXRpb24gKEZvckNFUykuICBUaGUNCj4gICBiYXNp YyBMRkIgY2xhc3NlcyBhcmUgZGVmaW5lZCBhY2NvcmRpbmcgdG8gRm9yQ0VTIEZFIG1vZGVsIGFu ZCBGb3JDRVMNCj4gICBwcm90b2NvbCBzcGVjaWZpY2F0aW9ucywgYW5kIGFyZSBzY29wZWQgdG8g bWVldCByZXF1aXJlbWVudHMgb2YNCj4gICB0eXBpY2FsIHJvdXRlciBmdW5jdGlvbnMgYW5kIGNv bnNpZGVyZWQgYXMgdGhlIGJhc2ljIExGQiBsaWJyYXJ5IGZvcg0KPiAgIEZvckNFUy4gIFRoZSBs aWJyYXJ5IGluY2x1ZGVzIHRoZSBkZXNjcmlwdGlvbnMgb2YgdGhlIExGQnMgYW5kIHRoZQ0KPiAg IFhNTCBkZWZpbml0aW9ucy4NCj4gDQo+IA0KPiBBIFVSTCBmb3IgdGhpcyBJbnRlcm5ldC1EcmFm dCBpczoNCj4gaHR0cDovL3d3dy5pZXRmLm9yZy9pbnRlcm5ldC1kcmFmdHMvZHJhZnQtaWV0Zi1m b3JjZXMtbGZiLWxpYi0wNy50eHQNCj4gDQo+IEludGVybmV0LURyYWZ0cyBhcmUgYWxzbyBhdmFp bGFibGUgYnkgYW5vbnltb3VzIEZUUCBhdDoNCj4gZnRwOi8vZnRwLmlldGYub3JnL2ludGVybmV0 LWRyYWZ0cy8NCj4gDQo+IFRoaXMgSW50ZXJuZXQtRHJhZnQgY2FuIGJlIHJldHJpZXZlZCBhdDoN Cj4gZnRwOi8vZnRwLmlldGYub3JnL2ludGVybmV0LWRyYWZ0cy9kcmFmdC1pZXRmLWZvcmNlcy1s ZmItbGliLTA3LnR4dA0KPiANCj4gX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX18NCj4gZm9yY2VzIG1haWxpbmcgbGlzdA0KPiBmb3JjZXNAaWV0Zi5vcmcNCj4g aHR0cHM6Ly93d3cuaWV0Zi5vcmcvbWFpbG1hbi9saXN0aW5mby9mb3JjZXMNCj4= From hadi@mojatatu.com Thu Jan 12 08:42:28 2012 Return-Path: X-Original-To: forces@ietfa.amsl.com Delivered-To: forces@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 22E2621F85B9 for ; Thu, 12 Jan 2012 08:42:28 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -102.977 X-Spam-Level: X-Spam-Status: No, score=-102.977 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, FM_FORGED_GMAIL=0.622, RCVD_IN_DNSWL_LOW=-1, USER_IN_WHITELIST=-100] 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 TZUmTqi6hlwi for ; Thu, 12 Jan 2012 08:42:27 -0800 (PST) Received: from mail-iy0-f172.google.com (mail-iy0-f172.google.com [209.85.210.172]) by ietfa.amsl.com (Postfix) with ESMTP id 96E2721F85B7 for ; Thu, 12 Jan 2012 08:42:27 -0800 (PST) Received: by iaae16 with SMTP id e16so2982795iaa.31 for ; Thu, 12 Jan 2012 08:42:27 -0800 (PST) Received: by 10.43.133.9 with SMTP id hw9mr4900917icc.34.1326386547234; Thu, 12 Jan 2012 08:42:27 -0800 (PST) MIME-Version: 1.0 Received: by 10.231.161.69 with HTTP; Thu, 12 Jan 2012 08:42:07 -0800 (PST) From: Jamal Hadi Salim Date: Thu, 12 Jan 2012 11:42:07 -0500 Message-ID: To: forces@ietf.org Content-Type: text/plain; charset=ISO-8859-1 Cc: "Joel M. Halpern" , Chuanhuang Li Subject: [forces] OperLinkSpeed::LANSpeedType X-BeenThere: forces@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: ForCES WG mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Jan 2012 16:42:28 -0000 [So this is probably more to do with our implementation doing paranoid checks than anything else.] The OperLinkSpeed cant hold a sensible value when you dont have link. For LANSpeedType, would it make sense to have the enumerated value 0 (we start at 1) to represent something like LAN_SPEED_NONE? It feels a little cleaner.. cheers, jamal From hadi@mojatatu.com Sat Jan 14 05:56:13 2012 Return-Path: X-Original-To: forces@ietfa.amsl.com Delivered-To: forces@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 30A8C21F8518 for ; Sat, 14 Jan 2012 05:56:13 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -102.977 X-Spam-Level: X-Spam-Status: No, score=-102.977 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, FM_FORGED_GMAIL=0.622, RCVD_IN_DNSWL_LOW=-1, USER_IN_WHITELIST=-100] 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 DD+uKCJ+vkPO for ; Sat, 14 Jan 2012 05:56:12 -0800 (PST) Received: from mail-iy0-f172.google.com (mail-iy0-f172.google.com [209.85.210.172]) by ietfa.amsl.com (Postfix) with ESMTP id 9BA8721F8513 for ; Sat, 14 Jan 2012 05:56:12 -0800 (PST) Received: by iaae16 with SMTP id e16so6266661iaa.31 for ; Sat, 14 Jan 2012 05:56:12 -0800 (PST) Received: by 10.42.168.197 with SMTP id x5mr4233552icy.6.1326549372238; Sat, 14 Jan 2012 05:56:12 -0800 (PST) MIME-Version: 1.0 Received: by 10.231.53.10 with HTTP; Sat, 14 Jan 2012 05:55:51 -0800 (PST) In-Reply-To: References: From: Jamal Hadi Salim Date: Sat, 14 Jan 2012 08:55:51 -0500 Message-ID: To: forces@ietf.org Content-Type: multipart/mixed; boundary=90e6ba6e89ca1bf9a504b67d5886 Cc: "Joel M. Halpern" , Chuanhuang Li Subject: Re: [forces] OperLinkSpeed::LANSpeedType X-BeenThere: forces@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: ForCES WG mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 14 Jan 2012 13:56:13 -0000 --90e6ba6e89ca1bf9a504b67d5886 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Attached suggestion to change. cheers, jamal On Thu, Jan 12, 2012 at 11:42 AM, Jamal Hadi Salim wrot= e: > [So this is probably more to do with our implementation doing paranoid ch= ecks > than anything else.] > > The OperLinkSpeed cant hold =A0a sensible value when you dont have link. > For LANSpeedType, would it make sense to have the enumerated value 0 > (we start at 1) to represent something like LAN_SPEED_NONE? > It feels a little cleaner.. > > cheers, > jamal --90e6ba6e89ca1bf9a504b67d5886 Content-Type: text/plain; charset=US-ASCII; name="linkoperchanges.txt" Content-Disposition: attachment; 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Sat, 14 Jan 2012 05:59:16 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -102.977 X-Spam-Level: X-Spam-Status: No, score=-102.977 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, FM_FORGED_GMAIL=0.622, RCVD_IN_DNSWL_LOW=-1, USER_IN_WHITELIST=-100] 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 8qbjgsQCTw9F for ; Sat, 14 Jan 2012 05:59:15 -0800 (PST) Received: from mail-iy0-f172.google.com (mail-iy0-f172.google.com [209.85.210.172]) by ietfa.amsl.com (Postfix) with ESMTP id 79C8621F8633 for ; Sat, 14 Jan 2012 05:59:14 -0800 (PST) Received: by iaae16 with SMTP id e16so6270044iaa.31 for ; Sat, 14 Jan 2012 05:59:14 -0800 (PST) Received: by 10.42.150.6 with SMTP id y6mr4144559icv.14.1326549554182; Sat, 14 Jan 2012 05:59:14 -0800 (PST) MIME-Version: 1.0 Received: by 10.231.53.10 with HTTP; Sat, 14 Jan 2012 05:58:53 -0800 (PST) From: Jamal Hadi Salim Date: Sat, 14 Jan 2012 08:58:53 -0500 Message-ID: To: forces@ietf.org Content-Type: multipart/mixed; boundary=90e6ba614710f4390a04b67d6206 Cc: "Joel M. Halpern" , Chuanhuang Li Subject: [forces] IPv4prefix packing X-BeenThere: forces@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: ForCES WG mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 14 Jan 2012 13:59:16 -0000 --90e6ba614710f4390a04b67d6206 Content-Type: text/plain; charset=ISO-8859-1 The current IPV4 prefix is not efficient to send on the wire. Can we re-arrange and add an 8 bit reserved field to make it more efficient. 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Jan 14 06:01:18 2012 Return-Path: X-Original-To: forces@ietfa.amsl.com Delivered-To: forces@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5C94621F8554 for ; Sat, 14 Jan 2012 06:01:18 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -102.977 X-Spam-Level: X-Spam-Status: No, score=-102.977 tagged_above=-999 required=5 tests=[AWL=-0.000, BAYES_00=-2.599, FM_FORGED_GMAIL=0.622, RCVD_IN_DNSWL_LOW=-1, USER_IN_WHITELIST=-100] 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 yX+NKxJZ-WeX for ; Sat, 14 Jan 2012 06:01:17 -0800 (PST) Received: from mail-iy0-f172.google.com (mail-iy0-f172.google.com [209.85.210.172]) by ietfa.amsl.com (Postfix) with ESMTP id B0F3B21F854E for ; Sat, 14 Jan 2012 06:01:17 -0800 (PST) Received: by iaae16 with SMTP id e16so6272169iaa.31 for ; Sat, 14 Jan 2012 06:01:17 -0800 (PST) Received: by 10.42.150.6 with SMTP id y6mr4149741icv.14.1326549677147; Sat, 14 Jan 2012 06:01:17 -0800 (PST) MIME-Version: 1.0 Received: by 10.231.53.10 with HTTP; Sat, 14 Jan 2012 06:00:56 -0800 (PST) From: Jamal Hadi Salim Date: Sat, 14 Jan 2012 09:00:56 -0500 Message-ID: To: forces@ietf.org Content-Type: multipart/mixed; boundary=90e6ba6147104887e404b67d6a9e Cc: "Joel M. Halpern" , Chuanhuang Li Subject: [forces] IPV6 packing X-BeenThere: forces@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: ForCES WG mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 14 Jan 2012 14:01:18 -0000 --90e6ba6147104887e404b67d6a9e Content-Type: text/plain; charset=ISO-8859-1 Same issue as IPV4. 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04:44:24 2012 Return-Path: X-Original-To: forces@ietfa.amsl.com Delivered-To: forces@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 4FBEB21F84B9 for ; Sun, 15 Jan 2012 04:44:24 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -101.777 X-Spam-Level: X-Spam-Status: No, score=-101.777 tagged_above=-999 required=5 tests=[AWL=-1.200, BAYES_00=-2.599, FM_FORGED_GMAIL=0.622, J_CHICKENPOX_25=0.6, J_CHICKENPOX_36=0.6, J_CHICKENPOX_37=0.6, J_CHICKENPOX_43=0.6, RCVD_IN_DNSWL_LOW=-1, USER_IN_WHITELIST=-100] 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 kg2kanbEf4Vi for ; Sun, 15 Jan 2012 04:44:23 -0800 (PST) Received: from mail-iy0-f172.google.com (mail-iy0-f172.google.com [209.85.210.172]) by ietfa.amsl.com (Postfix) with ESMTP id BA94E21F84B6 for ; Sun, 15 Jan 2012 04:44:23 -0800 (PST) Received: by iaae16 with SMTP id e16so7585864iaa.31 for ; Sun, 15 Jan 2012 04:44:22 -0800 (PST) Received: by 10.50.222.233 with SMTP id qp9mr5941963igc.1.1326631462207; Sun, 15 Jan 2012 04:44:22 -0800 (PST) MIME-Version: 1.0 Received: by 10.231.53.10 with HTTP; Sun, 15 Jan 2012 04:44:01 -0800 (PST) In-Reply-To: <201201151437339009129@mail.zjgsu.edu.cn> References: <201201151437339009129@mail.zjgsu.edu.cn> From: Jamal Hadi Salim Date: Sun, 15 Jan 2012 07:44:01 -0500 Message-ID: To: Chuanhuang Li Content-Type: multipart/mixed; boundary=14dae93406d70d823704b6907555 Cc: forces , "Joel M. Halpern" Subject: Re: [forces] IPv4prefix packing X-BeenThere: forces@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: ForCES WG mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 15 Jan 2012 12:44:24 -0000 --14dae93406d70d823704b6907555 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi Chuanhuang, There are several reasons. One is: RAM is abused a lot more. Ive attached a small C program with four possible layouts of the fields. In the suggested case we save 3Bytes compared to current definition. Try running it to see what I mean. Then try to imagine you have 500K such fields and how much RAM you can save. Not only for RAM, but if you were to send this structure on the wire - the most efficient way to do it is as i described. There is network equipment which will do more than one fetch to retrieve a field that goes across 32bit or 64bit alignment boundaries; these compute cycles could also be saved if you laid it out this way. Third, to interop properly you cant send that struct with plain TLVs, you need to use ILVs (restricting its usefulness). cheers, jamal On Sun, Jan 15, 2012 at 1:37 AM, Chuanhuang Li wrote: > Hi,Jamal > =A0 =A0I think it's no problem that we add this reserved field, if it is = needed sometime. But can you > detailed the possible occasion to use this field? Thanks! > > Yours, > Chuanhuang > =3D=3D=3D=3D=3D=3D=3D 2012-01-14 21:59:17 Jamal Hadi Salim, wrote: =3D=3D= =3D=3D=3D=3D=3D > >>The current IPV4 prefix is not efficient to send on the wire. >>Can we re-arrange and add an 8 bit reserved field to make it more >>efficient. >>XML suggestions attached. >> >>cheers, >>jamal >> > > --14dae93406d70d823704b6907555 Content-Type: text/x-csrc; charset=US-ASCII; name="v4pref.c" Content-Disposition: attachment; filename="v4pref.c" Content-Transfer-Encoding: base64 X-Attachment-Id: f_gxg20ha00 I2luY2x1ZGUgPHN0ZGlvLmg+CiNpbmNsdWRlIDxzdGRsaWIuaD4KI2luY2x1ZGUgPHN0ZGludC5o PiAKCi8qIGN1cnJlbnQgZGVmaW5pdGlvbiAqLwpzdHJ1Y3QgSVB2NFByZWZpeEluZm8xIHsKICAg IHVpbnQzMl90IElQdjRBZGRyZXNzOwogICAgdW5zaWduZWQgY2hhciBQcmVmaXhsZW47CiAgICAv KiAzYnl0ZXMgb2YgcGFkZGluZyBhZGRlZCBoZXJlIGJ5IGNvbXBpbGVyICovCiAgICB1aW50MzJf dCBIb3BTZWxlY3RvcjsgIAogICAgdW5zaWduZWQgY2hhciBFQ01QRmxhZzsgCiAgICB1bnNpZ25l ZCBjaGFyIERlZmF1bHRSb3V0ZUZsYWc7CiAgICAvKiAyYnl0ZXMgb2YgcGFkZGluZyBhZGRlZCBo ZXJlIGJ5IGNvbXBpbGVyICovCn07CgovKiBzdWdnZXN0ZWQgZGVmaW5pdGlvbiwgc2F2ZXMgM0Ig b2YgcGFkZGluZyBhbmQKYW5ub3RhdGVzIHRoZSBleHRyYSBwYWRkaW5nIGJ5dGUgd2UgY2FudCBn ZXQgcmlkIG9mLgprZWVwcyBJUHY0QWRkcmVzcyBQcmVmaXhsZW4gbmV4dCB0byBlYWNoIG90aGVy ICovCnN0cnVjdCBJUHY0UHJlZml4SW5mbzIgewogICAgdWludDMyX3QgSVB2NEFkZHJlc3M7CiAg ICB1bnNpZ25lZCBjaGFyIFByZWZpeGxlbjsKICAgIHVuc2lnbmVkIGNoYXIgRUNNUEZsYWc7IAog ICAgdW5zaWduZWQgY2hhciBEZWZhdWx0Um91dGVGbGFnOwogICAgdW5zaWduZWQgY2hhciBSZXNl cnZlZDsKICAgIHVpbnQzMl90IEhvcFNlbGVjdG9yOyAgCn07CgovKiBBbm90aGVyIHBvc3NpYmxl IGRlZmluaXRpb24sIHNhdmVzIDNCIG9mIHBhZGRpbmcKYnV0IHRoZXJlIHN0aWxsIHRoZSBleHRy YSBwYWRkaW5nIEIgYWRkZWQgYXQgdGhlIGVuZCBhZGRlZApieSBjb21waWxlcjsKSVB2NFByZWZp eEluZm8yIGlzIGJldHRlciBiZWNhdXNlIElQdjRBZGRyZXNzIGFuZCBQcmVmaXhsZW4KYXJlIG5l eHQgdG8gZWFjaCBvdGhlcgoqLwoKc3RydWN0IElQdjRQcmVmaXhJbmZvMyB7CiAgICB1aW50MzJf dCBJUHY0QWRkcmVzczsKICAgIHVpbnQzMl90IEhvcFNlbGVjdG9yOyAgCiAgICB1bnNpZ25lZCBj aGFyIFByZWZpeGxlbjsKICAgIHVuc2lnbmVkIGNoYXIgRUNNUEZsYWc7IAogICAgdW5zaWduZWQg Y2hhciBEZWZhdWx0Um91dGVGbGFnOwogICAgLyogMWJ5dGVzIG9mIHBhZGRpbmcgYWRkZWQgaGVy ZSBieSBjb21waWxlciAqLwp9OwoKLyogQW5vdGhlciBwb3NzaWJsZSBkZWZpbml0aW9uLCBzYXZl cyAzQiBvZiBwYWRkaW5nCmJ1dCB3ZSBhbm5vdGF0ZSB0aGUgZXh0cmEgYnl0ZSBhdCB0aGUgZW5k IHNvIHRoYXQgaXQgaXMgCmVhc3kgdG8gc2VlIGlmIHNvbWVvbmUgd2FzIHRvIHVzZSBpdCBpbiB0 aGUgZnV0dXJlCmJldHRlciB0aGFuIElQdjRQcmVmaXhJbmZvMyBOb3QgYXMgZ29vZCBhcyBJUHY0 UHJlZml4SW5mbzIKKi8Kc3RydWN0IElQdjRQcmVmaXhJbmZvNCB7CiAgICB1aW50MzJfdCBJUHY0 QWRkcmVzczsKICAgIHVpbnQzMl90IEhvcFNlbGVjdG9yOyAgCiAgICB1bnNpZ25lZCBjaGFyIFBy ZWZpeGxlbjsKICAgIHVuc2lnbmVkIGNoYXIgRUNNUEZsYWc7IAogICAgdW5zaWduZWQgY2hhciBE ZWZhdWx0Um91dGVGbGFnOwogICAgdW5zaWduZWQgY2hhciBSZXNlcnZlZDsKfTsKCgppbnQgbWFp bihpbnQgYXJnYywgY2hhciAqKmFyZ3ApCnsKCXN0cnVjdCBJUHY0UHJlZml4SW5mbzEgcDE7Cglz dHJ1Y3QgSVB2NFByZWZpeEluZm8yIHAyOwoJc3RydWN0IElQdjRQcmVmaXhJbmZvMyBwMzsKCXN0 cnVjdCBJUHY0UHJlZml4SW5mbzMgcDQ7CglwcmludGYoInNpemVvZiBJUHY0UHJlZml4SW5mb1R5 cGUxICVsZFxuIiwgc2l6ZW9mKHAxKSk7CglwcmludGYoInNpemVvZiBJUHY0UHJlZml4SW5mb1R5 cGUyICVsZFxuIiwgc2l6ZW9mKHAyKSk7CglwcmludGYoInNpemVvZiBJUHY0UHJlZml4SW5mb1R5 cGUzICVsZFxuIiwgc2l6ZW9mKHAzKSk7CglwcmludGYoInNpemVvZiBJUHY0UHJlZml4SW5mb1R5 cGU0ICVsZFxuIiwgc2l6ZW9mKHA0KSk7Cn0K --14dae93406d70d823704b6907555-- From hadi@mojatatu.com Sun Jan 15 04:51:41 2012 Return-Path: X-Original-To: forces@ietfa.amsl.com Delivered-To: forces@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D631321F8489 for ; Sun, 15 Jan 2012 04:51:41 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -102.137 X-Spam-Level: X-Spam-Status: No, score=-102.137 tagged_above=-999 required=5 tests=[AWL=-0.360, BAYES_00=-2.599, FM_FORGED_GMAIL=0.622, J_CHICKENPOX_25=0.6, J_CHICKENPOX_36=0.6, RCVD_IN_DNSWL_LOW=-1, USER_IN_WHITELIST=-100] 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 RTywjBV5AqwF for ; Sun, 15 Jan 2012 04:51:41 -0800 (PST) Received: from mail-iy0-f172.google.com (mail-iy0-f172.google.com [209.85.210.172]) by ietfa.amsl.com (Postfix) with ESMTP id 67C1821F8498 for ; Sun, 15 Jan 2012 04:51:38 -0800 (PST) Received: by iaae16 with SMTP id e16so7592275iaa.31 for ; Sun, 15 Jan 2012 04:51:38 -0800 (PST) Received: by 10.42.150.6 with SMTP id y6mr6956398icv.14.1326631898144; Sun, 15 Jan 2012 04:51:38 -0800 (PST) MIME-Version: 1.0 Received: by 10.231.53.10 with HTTP; Sun, 15 Jan 2012 04:51:17 -0800 (PST) In-Reply-To: References: <201201151437339009129@mail.zjgsu.edu.cn> From: Jamal Hadi Salim Date: Sun, 15 Jan 2012 07:51:17 -0500 Message-ID: To: Chuanhuang Li Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: forces , "Joel M. Halpern" Subject: Re: [forces] IPv4prefix packing X-BeenThere: forces@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: ForCES WG mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 15 Jan 2012 12:51:42 -0000 Sorry, I didnt answer the core part of your question: We dont need this reserved field, but we want to annotate it so nobody tries to add a new field in the future; it is also common practise (look at evolution of many headers at IETF, IPv4, TCP etc). BTW: In the xml i sent you, I made a mistake in the IDs; i think ID=3D3 is repeated twice. cheers, jamal On Sun, Jan 15, 2012 at 7:44 AM, Jamal Hadi Salim wrote= : > Hi Chuanhuang, > > There are several reasons. One is: RAM is abused a lot more. > Ive attached a small C program with four possible layouts of the fields. > In the suggested case we save 3Bytes compared to current definition. > Try running it to see what I mean. Then try to imagine you have 500K such > fields and how much RAM you can save. > Not only for RAM, but if you were to send this structure on the wire - > the most efficient > way to do it is as i described. There is network equipment which will > do more than one > fetch to retrieve a field that goes across 32bit or 64bit alignment > boundaries; these > compute cycles could also be saved if you laid it out this way. > Third, to interop properly you cant send that struct with plain TLVs, > you need to > use ILVs (restricting its usefulness). > > cheers, > jamal > > On Sun, Jan 15, 2012 at 1:37 AM, Chuanhuang Li > wrote: >> Hi,Jamal >> =A0 =A0I think it's no problem that we add this reserved field, if it is= needed sometime. But can you >> detailed the possible occasion to use this field? Thanks! >> >> Yours, >> Chuanhuang >> =3D=3D=3D=3D=3D=3D=3D 2012-01-14 21:59:17 Jamal Hadi Salim, wrote: =3D= =3D=3D=3D=3D=3D=3D >> >>>The current IPV4 prefix is not efficient to send on the wire. >>>Can we re-arrange and add an 8 bit reserved field to make it more >>>efficient. >>>XML suggestions attached. >>> >>>cheers, >>>jamal >>> >> >> From jmh@joelhalpern.com Sun Jan 15 20:33:16 2012 Return-Path: X-Original-To: forces@ietfa.amsl.com Delivered-To: forces@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 44C1921F8453 for ; Sun, 15 Jan 2012 20:33:16 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -101.439 X-Spam-Level: X-Spam-Status: No, score=-101.439 tagged_above=-999 required=5 tests=[AWL=-0.374, BAYES_00=-2.599, IP_NOT_FRIENDLY=0.334, J_CHICKENPOX_25=0.6, J_CHICKENPOX_36=0.6, USER_IN_WHITELIST=-100] 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 nrzup+MvBCvS for ; Sun, 15 Jan 2012 20:33:15 -0800 (PST) Received: from morbo.mail.tigertech.net (morbo.mail.tigertech.net [67.131.251.54]) by ietfa.amsl.com (Postfix) with ESMTP id C6C6921F844E for ; Sun, 15 Jan 2012 20:33:15 -0800 (PST) Received: from mailb1.tigertech.net (mailb1.tigertech.net [208.80.4.153]) by morbo.tigertech.net (Postfix) with ESMTP id BDC61A38A9 for ; Sun, 15 Jan 2012 20:33:15 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by mailb1.tigertech.net (Postfix) with ESMTP id A0B51D407F6; Sun, 15 Jan 2012 20:33:15 -0800 (PST) X-Virus-Scanned: Debian amavisd-new at mailb1.tigertech.net Received: from [10.10.10.101] (pool-71-161-51-85.clppva.btas.verizon.net [71.161.51.85]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mailb1.tigertech.net (Postfix) with ESMTPSA id 689E7D407CA; Sun, 15 Jan 2012 20:33:14 -0800 (PST) Message-ID: <4F13A88B.20803@joelhalpern.com> Date: Sun, 15 Jan 2012 23:33:15 -0500 From: "Joel M. Halpern" User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:9.0) Gecko/20111222 Thunderbird/9.0.1 MIME-Version: 1.0 To: Chuanhuang Li References: <201201151437339009129@mail.zjgsu.edu.cn>, <201201161010116180192@mail.zjgsu.edu.cn> In-Reply-To: <201201161010116180192@mail.zjgsu.edu.cn> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: forces Subject: Re: [forces] IPv4prefix packing X-BeenThere: forces@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: ForCES WG mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 16 Jan 2012 04:33:16 -0000 I started out thinking exactly the way you describe Chuanhuang. Then Jamal pointed out to me that when one uses the full-data TLV we pack all of the data together. In order as defined by the LFB. At which point the alignment comes into play. Yours, Joel On 1/15/2012 9:10 PM, Chuanhuang Li wrote: > Hi,Jamal > I have some different opinions. > I think the LFB definition is not a specific implementation. It just a logical and > abstract definition. User can implement the LFB in different ways. But the important > is that CE could use ForCES protocol to control these LFBs implemented by different users. > Byte alignment is an implementation problem. If the reason for adding the definition field is > just this one, from my point, i think we needn't change. > > Exactly, there may be other byte alignment cases, not just this one. For example, if a "string" type > component is a member of "struct" type, such as the definition of "LFBLinkType" in FEObject LFB. > > Yours, > Chuanhuang > ======= 2012-01-15 20:51:42 Jamal Hadi Salim, wrote: ======= > >> Sorry, I didnt answer the core part of your question: >> We dont need this reserved field, but we want to annotate it >> so nobody tries to add a new field in the future; it is also >> common practise (look at evolution of many headers at IETF, >> IPv4, TCP etc). >> >> BTW: In the xml i sent you, I made a mistake in the IDs; i think ID=3 >> is repeated twice. >> >> cheers, >> jamal >> >> On Sun, Jan 15, 2012 at 7:44 AM, Jamal Hadi Salim wrote: >>> Hi Chuanhuang, >>> >>> There are several reasons. One is: RAM is abused a lot more. >>> Ive attached a small C program with four possible layouts of the fields. >>> In the suggested case we save 3Bytes compared to current definition. >>> Try running it to see what I mean. Then try to imagine you have 500K such >>> fields and how much RAM you can save. >>> Not only for RAM, but if you were to send this structure on the wire - >>> the most efficient >>> way to do it is as i described. There is network equipment which will >>> do more than one >>> fetch to retrieve a field that goes across 32bit or 64bit alignment >>> boundaries; these >>> compute cycles could also be saved if you laid it out this way. >>> Third, to interop properly you cant send that struct with plain TLVs, >>> you need to >>> use ILVs (restricting its usefulness). >>> >>> cheers, >>> jamal >>> >>> On Sun, Jan 15, 2012 at 1:37 AM, Chuanhuang Li >>> wrote: >>>> Hi,Jamal >>>> I think it's no problem that we add this reserved field, if it is needed sometime. But can you >>>> detailed the possible occasion to use this field? Thanks! >>>> >>>> Yours, >>>> Chuanhuang >>>> ======= 2012-01-14 21:59:17 Jamal Hadi Salim, wrote: ======= >>>> >>>>> The current IPV4 prefix is not efficient to send on the wire. >>>>> Can we re-arrange and add an 8 bit reserved field to make it more >>>>> efficient. >>>>> XML suggestions attached. >>>>> >>>>> cheers, >>>>> jamal >>>>> >>>> >>>> From hadi@mojatatu.com Mon Jan 16 04:29:14 2012 Return-Path: X-Original-To: forces@ietfa.amsl.com Delivered-To: forces@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 49AFE21F84D4 for ; Mon, 16 Jan 2012 04:29:14 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -102.077 X-Spam-Level: X-Spam-Status: No, score=-102.077 tagged_above=-999 required=5 tests=[AWL=-0.300, BAYES_00=-2.599, FM_FORGED_GMAIL=0.622, J_CHICKENPOX_25=0.6, J_CHICKENPOX_36=0.6, RCVD_IN_DNSWL_LOW=-1, USER_IN_WHITELIST=-100] 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 ilMf8op3foAz for ; Mon, 16 Jan 2012 04:29:13 -0800 (PST) Received: from mail-iy0-f172.google.com (mail-iy0-f172.google.com [209.85.210.172]) by ietfa.amsl.com (Postfix) with ESMTP id A98E321F8571 for ; Mon, 16 Jan 2012 04:29:13 -0800 (PST) Received: by iaae16 with SMTP id e16so9356773iaa.31 for ; Mon, 16 Jan 2012 04:29:11 -0800 (PST) Received: by 10.50.189.137 with SMTP id gi9mr12969508igc.1.1326716951160; Mon, 16 Jan 2012 04:29:11 -0800 (PST) MIME-Version: 1.0 Received: by 10.231.53.10 with HTTP; Mon, 16 Jan 2012 04:28:49 -0800 (PST) In-Reply-To: <4F13A88B.20803@joelhalpern.com> References: <201201151437339009129@mail.zjgsu.edu.cn> <201201161010116180192@mail.zjgsu.edu.cn> <4F13A88B.20803@joelhalpern.com> From: Jamal Hadi Salim Date: Mon, 16 Jan 2012 07:28:49 -0500 Message-ID: To: "Joel M. Halpern" Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: forces , Chuanhuang Li Subject: Re: [forces] IPv4prefix packing X-BeenThere: forces@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: ForCES WG mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 16 Jan 2012 12:29:14 -0000 Aside from the packing issue, lets say your implementation was how i descri= bed the most optimal layout out to be and you merely translated on where to put things as they come in from the wire with this format; on a lot of hardware, the processing is going to consume more cycles. For example, two fetches will be required to retrieve HopSelector from the wire format. So it is pragmatic to make this change. cheers, jamal On Sun, Jan 15, 2012 at 11:33 PM, Joel M. Halpern wro= te: > I started out thinking exactly the way you describe Chuanhuang. > Then Jamal pointed out to me that when one uses the full-data TLV we pack > all of the data together. =A0In order as defined by the LFB. =A0At which = point > the alignment comes into play. > > Yours, > Joel > > > On 1/15/2012 9:10 PM, Chuanhuang Li wrote: >> >> Hi,Jamal >> =A0 =A0 I have some different opinions. >> I think the LFB definition is not a =A0specific implementation. It just = a >> logical and >> abstract definition. User can implement the LFB in different ways. But t= he >> important >> is that CE could use ForCES protocol to control these LFBs implemented b= y >> different users. >> Byte alignment is an implementation problem. If the reason for adding th= e >> definition field is >> just this one, from my point, i think we needn't change. >> >> Exactly, there may be other byte alignment cases, not just this one. For >> example, if a "string" type >> component is a member of "struct" type, such as the definition of >> "LFBLinkType" in FEObject LFB. >> >> Yours, >> Chuanhuang >> =3D=3D=3D=3D=3D=3D=3D 2012-01-15 20:51:42 Jamal Hadi Salim, wrote: =3D= =3D=3D=3D=3D=3D=3D >> >>> Sorry, I didnt answer the core part of your question: >>> We dont need this reserved field, but we want to annotate it >>> so nobody tries to add a new field in the future; it is also >>> common practise (look at evolution of many headers at IETF, >>> IPv4, TCP etc). >>> >>> BTW: In the xml i sent you, I made a mistake in the IDs; i think ID=3D3 >>> is repeated twice. >>> >>> cheers, >>> jamal >>> >>> On Sun, Jan 15, 2012 at 7:44 AM, Jamal Hadi Salim >>> =A0wrote: >>>> >>>> Hi Chuanhuang, >>>> >>>> There are several reasons. One is: RAM is abused a lot more. >>>> Ive attached a small C program with four possible layouts of the field= s. >>>> In the suggested case we save 3Bytes compared to current definition. >>>> Try running it to see what I mean. Then try to imagine you have 500K >>>> such >>>> fields and how much RAM you can save. >>>> Not only for RAM, but if you were to send this structure on the wire - >>>> the most efficient >>>> way to do it is as i described. There is network equipment which will >>>> do more than one >>>> fetch to retrieve a field that goes across 32bit or 64bit alignment >>>> boundaries; these >>>> compute cycles could also be saved if you laid it out this way. >>>> Third, to interop properly you cant send that struct with plain TLVs, >>>> you need to >>>> use ILVs (restricting its usefulness). >>>> >>>> cheers, >>>> jamal >>>> >>>> On Sun, Jan 15, 2012 at 1:37 AM, Chuanhuang Li >>>> =A0wrote: >>>>> >>>>> Hi,Jamal >>>>> =A0 =A0I think it's no problem that we add this reserved field, if it= is >>>>> needed sometime. But can you >>>>> detailed the possible occasion to use this field? Thanks! >>>>> >>>>> Yours, >>>>> Chuanhuang >>>>> =3D=3D=3D=3D=3D=3D=3D 2012-01-14 21:59:17 Jamal Hadi Salim, wrote: = =3D=3D=3D=3D=3D=3D=3D >>>>> >>>>>> The current IPV4 prefix is not efficient to send on the wire. >>>>>> Can we re-arrange and add an 8 bit reserved field to make it more >>>>>> efficient. >>>>>> XML suggestions attached. >>>>>> >>>>>> cheers, >>>>>> jamal >>>>>> >>>>> >>>>> > From wmwang2001@hotmail.com Tue Jan 31 19:45:43 2012 Return-Path: X-Original-To: forces@ietfa.amsl.com Delivered-To: forces@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1CBC811E807F for ; Tue, 31 Jan 2012 19:45:43 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 2.954 X-Spam-Level: ** X-Spam-Status: No, score=2.954 tagged_above=-999 required=5 tests=[BAYES_50=0.001, J_CHICKENPOX_25=0.6, J_CHICKENPOX_36=0.6, MIME_BASE64_TEXT=1.753] 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 ckM-SGR8GmGq for ; Tue, 31 Jan 2012 19:45:42 -0800 (PST) Received: from blu0-omc2-s28.blu0.hotmail.com (blu0-omc2-s28.blu0.hotmail.com [65.55.111.103]) by ietfa.amsl.com (Postfix) with ESMTP id E8C7B11E808E for ; Tue, 31 Jan 2012 19:45:41 -0800 (PST) Received: from BLU0-SMTP20 ([65.55.111.72]) by blu0-omc2-s28.blu0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4675); Tue, 31 Jan 2012 19:45:41 -0800 X-Originating-IP: [125.120.84.137] X-Originating-Email: [wmwang2001@hotmail.com] Message-ID: Received: from WmwangHome ([125.120.84.137]) by BLU0-SMTP20.phx.gbl over TLS secured channel with Microsoft SMTPSVC(6.0.3790.4675); Tue, 31 Jan 2012 19:45:40 -0800 From: "Wang,Weiming" To: "Jamal Hadi Salim" , "Joel M. Halpern" References: <201201151437339009129@mail.zjgsu.edu.cn><201201161010116180192@mail.zjgsu.edu.cn><4F13A88B.20803@joelhalpern.com> Date: Wed, 1 Feb 2012 11:45:39 +0800 MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: base64 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 X-OriginalArrivalTime: 01 Feb 2012 03:45:40.0460 (UTC) FILETIME=[F787FAC0:01CCE093] Cc: forces , Chuanhuang Li Subject: Re: [forces] IPv4prefix packing X-BeenThere: forces@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: ForCES WG mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 01 Feb 2012 03:45:43 -0000 SGkgSmFtYWwgYW5kIENodWFuaHVhbmcsDQoNCkkgYWdyZWUgaXQgc2VlbXMgbGlrZSBhbiBpbXBs ZW1lbnRhdGlvbiBpc3N1ZSwgd2hlcmVhcyBpdCBhbHNvIHNlZW1zIGEgZ29vZCB3YXkgb2Ygb3B0 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