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Re: [Softwires] draft-penno-softwire-sdnat vs. draft-cui-softwire-b4-translated-ds-lite

<mohamed.boucadair@orange.com> Wed, 14 March 2012 06:49 UTC

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From: mohamed.boucadair@orange.com
To: Qiong <bingxuere@gmail.com>, Francis Dupont <Francis.Dupont@fdupont.fr>
Date: Wed, 14 Mar 2012 07:49:36 +0100
Thread-Topic: [Softwires] draft-penno-softwire-sdnat vs. draft-cui-softwire-b4-translated-ds-lite
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Cc: Softwires WG <softwires@ietf.org>, draft-cui-softwire-b4-translated-ds-lite <draft-cui-softwire-b4-translated-ds-lite@tools.ietf.org>, "draft-penno-softwire-sdnat@tools.ietf.org" <draft-penno-softwire-sdnat@tools.ietf.org>
Subject: Re: [Softwires] draft-penno-softwire-sdnat vs. draft-cui-softwire-b4-translated-ds-lite
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Dear Qiong,

Please see inline.

Cheers,
Med

________________________________
De : Qiong [mailto:bingxuere@gmail.com]
Envoyé : mercredi 14 mars 2012 00:50
À : Francis Dupont
Cc : BOUCADAIR Mohamed OLNC/NAD/TIP; Softwires WG; draft-cui-softwire-b4-translated-ds-lite; draft-penno-softwire-sdnat@tools.ietf.org
Objet : Re: [Softwires] draft-penno-softwire-sdnat vs. draft-cui-softwire-b4-translated-ds-lite


>     (2) Unlike draft-penno-*, draft-cui-* does not mandate any proffered
>     provisioning means for port ranges; a list of alternatives is
>     provided in draft-cui-* without any preference (this is deployment-
>     specific):

=> but the ICMP-based solution is deeply broken so is it a real
advantage?
[Qiong] In draft-cui-softwire-b4-translated-ds-lite, we have described the "ICMP processing" in section 10. And we have verified that it works fine in all ICMP-based protocols, e.g. ping, tracert, etc. There is no problem here.

[Med] I know it is confusing but these are two distinct issues. draft-penno-* defines a new method using ICMP to learn ports. Please refer to http://tools.ietf.org/html/draft-penno-softwire-sdnat-02#section-5

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