IETF Logo Mail Archive

Re: [mpls] draft-fang-mpls-label-forwarding-no-swap - how much does it really save?

Gregory Mirsky <gregory.mirsky@ericsson.com> Tue, 28 July 2015 14:58 UTC

Return-Path: <gregory.mirsky@ericsson.com>
X-Original-To: mpls@ietfa.amsl.com
Delivered-To: mpls@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 119A41AC42F for <mpls@ietfa.amsl.com>; Tue, 28 Jul 2015 07:58:48 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -104.2
X-Spam-Level:
X-Spam-Status: No, score=-104.2 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] 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 Y0QRjYUtE5qx for <mpls@ietfa.amsl.com>; Tue, 28 Jul 2015 07:58:46 -0700 (PDT)
Received: from usevmg21.ericsson.net (usevmg21.ericsson.net [198.24.6.65]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id BDCD71AC42A for <mpls@ietf.org>; Tue, 28 Jul 2015 07:58:30 -0700 (PDT)
X-AuditID: c6180641-f79556d0000002c8-72-55b7303a2081
Received: from EUSAAHC008.ericsson.se (Unknown_Domain [147.117.188.96]) by usevmg21.ericsson.net (Symantec Mail Security) with SMTP id A9.58.00712.A3037B55; Tue, 28 Jul 2015 09:33:14 +0200 (CEST)
Received: from EUSAAMB103.ericsson.se ([147.117.188.120]) by EUSAAHC008.ericsson.se ([147.117.188.96]) with mapi id 14.03.0210.002; Tue, 28 Jul 2015 10:58:28 -0400
From: Gregory Mirsky <gregory.mirsky@ericsson.com>
To: "Andrew G. Malis" <agmalis@gmail.com>, Stewart Bryant <stbryant@cisco.com>
Thread-Topic: [mpls] draft-fang-mpls-label-forwarding-no-swap - how much does it really save?
Thread-Index: AQHQxdE84j+0b+JzE0iI4/eDDDIUYp3qhsiAgAUiJgCAAWVzAP//8L3Q
Date: Tue, 28 Jul 2015 14:58:28 +0000
Message-ID: <7347100B5761DC41A166AC17F22DF112218861AE@eusaamb103.ericsson.se>
References: <DB3PR03MB0780AE3E11BEA6B29B81FF5B9D810@DB3PR03MB0780.eurprd03.prod.outlook.com> <EA360A7AB9D90D4B9E9173B6D27C371EE3F60C0D@MTKMBS61N1.mediatek.inc> <55B64078.7030601@cisco.com> <CAA=duU35ZvDAvxZ7kGVCVfHyfCUKWd2GFQa6uCb-C7SfE7giAg@mail.gmail.com>
In-Reply-To: <CAA=duU35ZvDAvxZ7kGVCVfHyfCUKWd2GFQa6uCb-C7SfE7giAg@mail.gmail.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-originating-ip: [147.117.188.12]
Content-Type: multipart/alternative; boundary="_000_7347100B5761DC41A166AC17F22DF112218861AEeusaamb103erics_"
MIME-Version: 1.0
X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupikeLIzCtJLcpLzFFi42KZXLonQdfaYHuowVNmi9PPT7FZ3Fq6ktWi aWETs8W5p3MYHVg8pvzeyOqxc9Zddo8lS34yeezeuIApgCWKyyYlNSezLLVI3y6BK2PWz+/s BVtcKpZf72dtYDzg1MXIySEhYCKxdEc/M4QtJnHh3nq2LkYuDiGBo4wSK6a3s0A4yxkl3p56 yQhSxSZgJPFiYw87iC0i4Cfx600HmM0s4CbxdMkbsEnCAnESh9ZtZYSoiZfo2dUNZHMA2W4S Tb+8QcIsAqoS7+b+ZwUJ8wr4Sry+5Aaxqp1JonH3U1aQGk6BQImbHVfBxjACHff91BomiFXi EreezGeCOFpAYsme81APiEq8fPyPFcJWkpjz+hozRH2+xJYpXWBn8goISpyc+YRlAqPoLCSj ZiEpm4WkbBbQecwCmhLrd+lDlChKTOl+yA5ha0i0zpnLjiy+gJF9FSNHaXFqWW66keEmRmDk HZNgc9zBuOCT5SFGAQ5GJR7eBYXbQoVYE8uKK3MPMUpzsCiJ80r75YUKCaQnlqRmp6YWpBbF F5XmpBYfYmTi4JRqYJxw++yGXycP22ocz16zes6CM5zX73LUfih5oTid4UCC0iPO6xLhDcXb lhw8cHL66cbM8EsrNvVdb7J669KZnT5z2qJnD2J7uaxYG6fpmEQ0TN1v+3ByQeFBJcXXZW4N LssEjm/YEiazJERF29Iiuv7RnMPHo6W6TRU3yrCIb/BYqjZ7xtVbhcuVWIozEg21mIuKEwE9 mQOWnQIAAA==
Archived-At: <http://mailarchive.ietf.org/arch/msg/mpls/CpvyhWQlwkrX1siDNK8VAi_6S_s>
Cc: "mpls@ietf.org" <mpls@ietf.org>, Robert Raszuk <robert@raszuk.net>
Subject: Re: [mpls] draft-fang-mpls-label-forwarding-no-swap - how much does it really save?
X-BeenThere: mpls@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: Multi-Protocol Label Switching WG <mpls.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/mpls>, <mailto:mpls-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/mpls/>
List-Post: <mailto:mpls@ietf.org>
List-Help: <mailto:mpls-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/mpls>, <mailto:mpls-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 28 Jul 2015 14:58:48 -0000

It does remind me of the discussion around T-MPLS. After couple years we’ve managed to shape it into MPLS-TP and, I hope, learned a thing or two. So, may be another profile of MPLS is due this time?

                Regards,
                                Greg

From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of Andrew G. Malis
Sent: Tuesday, July 28, 2015 4:50 AM
To: Stewart Bryant
Cc: mpls@ietf.org; Robert Raszuk
Subject: Re: [mpls] draft-fang-mpls-label-forwarding-no-swap - how much does it really save?

Stewart has it right:

On Mon, Jul 27, 2015 at 10:30 AM, Stewart Bryant <stbryant@cisco.com<mailto:stbryant@cisco.com>> wrote:
If that is not a requirement in your world, then I suggest
that you get a new ethertype and call it MPLS2

This is enough of a deviation from the millions of devices in the installed base that you can just get a new Ethertype and optimize to your heart's content. You're going to need new ASICs anyway, may as well go all the way. This also removes the need to do any sort of peer capability negotiation for backwards compatibility, and gives you the freedom to produce devices that ONLY support MPLS2 if you so desire, to have a less expensive and optimized data center solution. I would support standardization in this case.

Cheers,
Andy

v2.23.0 | Report a Bug | By Email