Re: [Softwires] [BEHAVE] Stateless Deterministic NAPT/DS-Lite

Alain Durand <adurand@juniper.net> Mon, 07 November 2011 17:47 UTC

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From: Alain Durand <adurand@juniper.net>
To: Cameron Byrne <cb.list6@gmail.com>
Date: Mon, 07 Nov 2011 09:45:51 -0800
Thread-Topic: [BEHAVE] Stateless Deterministic NAPT/DS-Lite
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Cc: "softwires@ietf.org" <softwires@ietf.org>, "Poscic, Kristian (Kristian)" <kristian.poscic@alcatel-lucent.com>, "behave@ietf.org" <behave@ietf.org>
Subject: Re: [Softwires] [BEHAVE] Stateless Deterministic NAPT/DS-Lite
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On Nov 7, 2011, at 11:05 AM, Cameron Byrne wrote:


> > How would PCP operate with this model?
>
> This is an interesting question... This should make the life of the PCP server rather easy, as there will be no state to keep there too.
>

Interesting indeed, no pcp and no alg

PCP stil works. It is easier to implement.

So for stateless solutions anything that falls out of your static cgn allocation will not work? Like sip/rtp? Multiplayer games? Ftp? Rtsp? Pptp? Ipsec? ...

Sorry if I missed something obvious for how these are enabled.

If those apps rely on listening on a well known port, they will fail with any address/port sharing solution, stateful or stateless.
If not, they negotiate ports with PCP or other methods before advertising it with a rendez-vous server. This is independent from stateful vs stateless.

Alain.