IETF Logo Mail Archive

Re: [BEHAVE] [v6ops] Home NAPT44 - How many ports?

Benedikt Stockebrand <bs@stepladder-it.com> Mon, 17 June 2013 10:47 UTC

Return-Path: <bs@stepladder-it.com>
X-Original-To: behave@ietfa.amsl.com
Delivered-To: behave@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id CFA9821F9958; Mon, 17 Jun 2013 03:47:07 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.599
X-Spam-Level:
X-Spam-Status: No, score=-2.599 tagged_above=-999 required=5 tests=[BAYES_00=-2.599]
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 B+Gi-JBcin9D; Mon, 17 Jun 2013 03:47:04 -0700 (PDT)
Received: from mail.speedpartner.de (mail.speedpartner.de [IPv6:2a01:198::3]) by ietfa.amsl.com (Postfix) with ESMTP id 6247921F9B93; Mon, 17 Jun 2013 03:46:29 -0700 (PDT)
Received: from localhost (localhost [127.0.0.1]) by mail.speedpartner.de (Postfix) with ESMTP id F2CDD62226; Mon, 17 Jun 2013 12:46:24 +0200 (CEST)
Received: from mail.speedpartner.de ([127.0.0.1]) by localhost (mail.speedpartner.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 5SwXZx5ar8Li; Mon, 17 Jun 2013 12:46:24 +0200 (CEST)
Received: from stepladder-it.com (port-83-236-238-169.static.qsc.de [83.236.238.169]) (using TLSv1 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: mxbot@stepladder-it.com) by mail.speedpartner.de (Postfix) with ESMTPSA id D589961BBD; Mon, 17 Jun 2013 12:46:24 +0200 (CEST)
Received: from ip6-localhost ([::1] helo=natrix) by stepladder-it.com with esmtp (Exim 4.80) (envelope-from <bs@stepladder-it.com>) id 1UoWx3-0004bz-2J; Mon, 17 Jun 2013 10:46:21 +0000
From: Benedikt Stockebrand <bs@stepladder-it.com>
To: "Softwires-wg list \(softwires\@ietf.org\)" <softwires@ietf.org>, "v6ops\@ietf.org" <v6ops@ietf.org>, "behave\@ietf.org" <behave@ietf.org>
References: <B14A62A57AB87D45BB6DD7D9D2B78F0B116D2400@xmb-rcd-x06.cisco.com> <FC155739-3CB3-48FD-B77A-8526BEE9648B@cisco.com>
Date: Mon, 17 Jun 2013 10:46:20 +0000
In-Reply-To: <FC155739-3CB3-48FD-B77A-8526BEE9648B@cisco.com> (Dan Wing's message of "Thu, 6 Jun 2013 08:43:23 -0700")
Message-ID: <877ghtt3pf.fsf@stepladder-it.com>
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.1 (gnu/linux)
MIME-Version: 1.0
Content-Type: text/plain
X-Mailman-Approved-At: Mon, 17 Jun 2013 10:10:42 -0700
Subject: Re: [BEHAVE] [v6ops] Home NAPT44 - How many ports?
X-BeenThere: behave@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: mailing list of BEHAVE IETF WG <behave.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/behave>, <mailto:behave-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/behave>
List-Post: <mailto:behave@ietf.org>
List-Help: <mailto:behave-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/behave>, <mailto:behave-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 17 Jun 2013 13:10:24 -0000

Hi Dan and lists,

Dan Wing <dwing@cisco.com> writes:

> On Jun 5, 2013, at 6:14 AM, Rajiv Asati (rajiva) <rajiva@cisco.com> wrote:
>>
>> In short, port range of 500 seems ok, though 1000 would be more than enough for my home.
>
> I see several spikes in your data over 500 ports.  [...]  If you had
> only 500 ports on those days, creating a new TCP mapping would have
> been impossible, impacting ability to send or receive email, order
> books from Amazon.com, and so on.

...or make an emergency phone call using SIP---which currently spooks
triple play providers at least here in Germany, not only because it is
bad press but disrupting emergency calls is in some cases considered a
criminal offense here.

Otherwise, in November I saw a presentation by Alain Fiocco (also Cisco)
pointing out that a single Bittorrent client already needs about 700
simultaneous connections.


Cheers,

    Benedikt

-- 
			 Business Grade IPv6
		    Consulting, Training, Projects

Benedikt Stockebrand, Dipl.-Inform.        http://www.stepladder-it.com/

v2.2.0 | Report a Bug | By Email