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

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

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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")
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Subject: Re: [BEHAVE] [v6ops] Home NAPT44 - How many ports?
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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/