IETF Logo Mail Archive

Re: [pcp] WGLC: draft-ietf-pcp-base-12.txt

Tina Tsou <tena@huawei.com> Sat, 04 June 2011 05:26 UTC

Return-Path: <tena@huawei.com>
X-Original-To: pcp@ietfa.amsl.com
Delivered-To: pcp@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7A80FE0676 for <pcp@ietfa.amsl.com>; Fri, 3 Jun 2011 22:26:17 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -106.141
X-Spam-Level:
X-Spam-Status: No, score=-106.141 tagged_above=-999 required=5 tests=[AWL=0.457, BAYES_00=-2.599, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-4, USER_IN_WHITELIST=-100]
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 X5xM2lEn5lQK for <pcp@ietfa.amsl.com>; Fri, 3 Jun 2011 22:26:15 -0700 (PDT)
Received: from usaga04-in.huawei.com (usaga04-in.huawei.com [206.16.17.180]) by ietfa.amsl.com (Postfix) with ESMTP id 6C450E0674 for <pcp@ietf.org>; Fri, 3 Jun 2011 22:26:15 -0700 (PDT)
Received: from huawei.com (usaga04-in [172.18.4.101]) by usaga04-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0LM900MIL33Q7C@usaga04-in.huawei.com> for pcp@ietf.org; Sat, 04 Jun 2011 00:26:15 -0500 (CDT)
Received: from TingZousc1 ([10.212.245.166]) by usaga04-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTPA id <0LM90093Y33KRU@usaga04-in.huawei.com> for pcp@ietf.org; Sat, 04 Jun 2011 00:26:14 -0500 (CDT)
Date: Fri, 03 Jun 2011 22:26:07 -0700
From: Tina Tsou <tena@huawei.com>
In-reply-to: <9B57C850BB53634CACEC56EF4853FF653B0E7836@TK5EX14MBXW601.wingroup.windeploy.ntdev.microsoft.com>
To: 'Dave Thaler' <dthaler@microsoft.com>, pcp@ietf.org
Message-id: <01bb01cc2277$eb072b70$c1158250$@com>
MIME-version: 1.0
X-Mailer: Microsoft Office Outlook 12.0
Content-type: multipart/alternative; boundary="Boundary_(ID_O8HxpRLAQmXsrSiOZg+aOA)"
Content-language: en-us
Thread-index: AcwXKk61FuyajK7hRbulosJtjQ9K5wK/sVTgABOocjA=
References: <9B57C850BB53634CACEC56EF4853FF653B0BA0FD@TK5EX14MBXW604.wingroup.windeploy.ntdev.microsoft.com> <9B57C850BB53634CACEC56EF4853FF653B0E7836@TK5EX14MBXW601.wingroup.windeploy.ntdev.microsoft.com>
Subject: Re: [pcp] WGLC: draft-ietf-pcp-base-12.txt
X-BeenThere: pcp@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: PCP wg discussion list <pcp.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/pcp>, <mailto:pcp-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/pcp>
List-Post: <mailto:pcp@ietf.org>
List-Help: <mailto:pcp-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/pcp>, <mailto:pcp-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sat, 04 Jun 2011 05:26:17 -0000

Dear all,
In section7, there is one description:
"It is REQUIRED that the PCP-controlled device assign the same
   external IP address to PCP-created explicit dynamic mappings and to
   implicit dynamic mappings."
It is only a requirement to CGN, but some existing CGN may not support this
requirement as defined in RFC4787-[REQ1]:
"Some NATs use the external IP address mapping in an arbitrary fashion
   (i.e., randomly): one internal IP address could have multiple
   external IP address mappings active at the same time for different
   sessions"
Therefore, I suggest the PCP client should also support this requirement
which was actually defined in 00 version but deleted in later versions
(maybe I missed the reason of the text change):
If there is any existing PCP mapping, PCP client should only request the
same external IP address as the one of those existing mappings. The reason
is that it will allow applications that use multiple ports originating from
the same internal IP address to also have the same external IP address.
 
 
Have a good weekend.
 
We keep our promises with one another - no matter what!
 
Best Regards,
Tina TSOU
http://tinatsou.weebly.com/contact.html
 
From: pcp-bounces@ietf.org [mailto:pcp-bounces@ietf.org] On Behalf Of Dave
Thaler
Sent: Friday, June 03, 2011 1:02 PM
To: pcp@ietf.org
Subject: Re: [pcp] WGLC: draft-ietf-pcp-base-12.txt
 
Some comments on -12 are in the marked up copy at
http://research.microsoft.com/users/dthaler/draft-ietf-pcp-base-12.pdf
 
-Dave
 
From: pcp-bounces@ietf.org [mailto:pcp-bounces@ietf.org] On Behalf Of Dave
Thaler
Sent: Friday, May 20, 2011 1:18 PM
To: pcp@ietf.org
Subject: [pcp] WGLC: draft-ietf-pcp-base-12.txt
 
This message starts a two-week WGLC on
http://www.ietf.org/internet-drafts/draft-ietf-pcp-base-12.txt
 
This last call will conclude on June 3rd at 5pm EST.
 
Please send your comments to the list.
 
We are scheduling a WebEx call shortly after the WGLC concludes,
and will send out details in separate email.
 
Thanks,
-Dave and Alain

v2.23.0 | Report a Bug | By Email