Re: [Insipid] Review of draft-ietf-insipid-logme-reqs-02

"Dawes, Peter, Vodafone Group" <Peter.Dawes@vodafone.com> Thu, 11 June 2015 12:39 UTC

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From: "Dawes, Peter, Vodafone Group" <Peter.Dawes@vodafone.com>
To: Christer Holmberg <christer.holmberg@ericsson.com>, "insipid@ietf.org" <insipid@ietf.org>
Thread-Topic: [Insipid] Review of draft-ietf-insipid-logme-reqs-02
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Date: Thu, 11 Jun 2015 12:38:56 +0000
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Subject: Re: [Insipid] Review of draft-ietf-insipid-logme-reqs-02
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Hi Christer, thanks a lot for your comments and questions, I have replied in-line below.

Best regards,
Peter

> -----Original Message-----
> From: Christer Holmberg [mailto:christer.holmberg@ericsson.com]
> Sent: 10 June 2015 14:05
> To: insipid@ietf.org
> Cc: Dawes, Peter, Vodafone Group
> Subject: RE: [Insipid] Review of draft-ietf-insipid-logme-reqs-02
> 
> Hi,
> 
> I have read the draft. In general it looks ok, but I have a few questions on the
> requirements.
> 
> 
> Q1 (editorial):
> 
> In REQ3, I suggest to place the "A "log me" marker SHOULD be removed at
> trust domain boundaries." sentence before the rest of the text.

I agree that the text will read better if I move the final sentence to the beginning, I will do this in the next version.

> 
> 
> Q2 (editorial/technical):
> 
> I don't understand REQ4, saying "SIP entities SHOULD log SIP requests or
> responses with a "log me" marker."
> 
> Also, in e.g. REQ6 it is then said that proxies MAY insert the marker, which
> seems to contradict.
> 
REQ4 could be re-written slightly more clearly as "SIP entities SHOULD log SIP requests or responses that contain a "log me" marker." The SIP entity checks for the presence of a "log me" marker and writes any request or response that contains a "log me" marker to a log file. 
REQ 6 allows a SIP proxy to insert a "log me" marker to allow the mechanism to work even if the UE does not support this draft, so this talks about inserting a "log me" marker and not checking for its presence. 

> 
> Q3 (editorial/technical):
> 
> Regarding REQ5, does that also apply to UAs that do NOT support the
> mechanism? If so, I think that should be explicitly stated, because it will have
> big impact on the technical solution.
> 
UEs that do not support the mechanism are not expected to echo the "log me" marker because they don't know about it. However, if the "log me" marker solution is a header field parameter of the Session-ID header field, as currently proposed, then I guess that even UEs that do not support inserting a "log me" marker will echo it if it echoes the whole Session-ID header field. 

> 
> Regards,
> 
> Christer
> 
> -----Original Message-----
> From: insipid [mailto:insipid-bounces@ietf.org] On Behalf Of Georg Mayer
> Sent: 8. kesäkuuta 2015 12:42
> To: insipid@ietf.org
> Cc: Peter.Dawes@vodafone.com
> Subject: [Insipid] Review of draft-ietf-insipid-logme-reqs-02
> 
> Hello,
> 
> I finally managed to review draft-ietf-insipid-logme-reqs-02. I have no
> technical comments on it and support all the requirements therein. In my
> view the draft can progress as is.
> 
> Cheers,
> Georg
> 
> 
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