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Re: [Dime] New Version Notification for draft-donovan-doic-agent-cases-00.txt

Steve Donovan <srdonovan@usdonovans.com> Wed, 16 July 2014 07:16 UTC

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Date: Wed, 16 Jul 2014 09:16:02 +0200
From: Steve Donovan <srdonovan@usdonovans.com>
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To: "Wiehe, Ulrich (NSN - DE/Munich)" <ulrich.wiehe@nsn.com>, "dime@ietf.org" <dime@ietf.org>
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Archived-At: http://mailarchive.ietf.org/arch/msg/dime/_kvF8tivyyzwd16uih2-xOAmRkA
Subject: Re: [Dime] New Version Notification for draft-donovan-doic-agent-cases-00.txt
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Ulrich,

The mismatched capabilities use case is required for extensibility.

We have at least two cases where the use case is required.  First is 
agent overload and the second is the rate abatement algorithm.

Consider the  agent overload feature.  This feature requires knowledge 
of whether or not the adjacent nodes support the feature. This cannot be 
achieved if the transaction client does not support the feature and the 
agent is not allowed to change the OC-S-F AVP.

As I indicated in my initial response, I do not agree with the A-F 
principles.  The DOIC solution needs to support required use cases. The 
behavior specified needs to be based on those use cases.

Steve


On 7/15/14, 10:23 PM, Wiehe, Ulrich (NSN - DE/Munich) wrote:
> Steve,
>
> e.g.the use case shown in figure 7 where the agent modifies the OC-S-F within the xxR no matter whether the xxR is host-routed or realm-routed. If xxR is host routed, A) is not followed.
>
> Ulrich
>
>
> -----Original Message-----
> From: ext Steve Donovan [mailto:srdonovan@usdonovans.com]
> Sent: Tuesday, July 15, 2014 4:30 PM
> To: Wiehe, Ulrich (NSN - DE/Munich); dime@ietf.org
> Subject: Re: [Dime] New Version Notification for draft-donovan-doic-agent-cases-00.txt
>
> Ulrich,
>
> Which of the use cases in the draft do not follow A) to F)?
>
> Steve
>
> On 7/15/14, 4:06 PM, Wiehe, Ulrich (NSN - DE/Munich) wrote:
>> Steve,
>>
>> all use cases that do not follow A) to F),
>> e.g. where
>>
>> C and S both supports DOIC, C sends a host-routed request to S and A in the path modifies OC-xxx AVPs (see figure 7).
>>
>> Ulrich
>>
>> -----Original Message-----
>> From: DiME [mailto:dime-bounces@ietf.org] On Behalf Of ext Steve Donovan
>> Sent: Tuesday, July 15, 2014 2:16 PM
>> To: dime@ietf.org
>> Subject: Re: [Dime] New Version Notification for draft-donovan-doic-agent-cases-00.txt
>>
>> Ulrich,
>>
>> Can you be specific on which of the use cases in the specification do
>> not need to be supported by the DOIC solution?
>>
>> Thanks,
>>
>> Steve
>>> Do I understand correctly that you mean that an agent MUST NOT remove or modify the OC-S-F from host routed requests? If so, I disagree. There are real world scenarios that will require that modification or removal. (For example, those in section 5.2)
>>> [Wiehe, Ulrich (NSN - DE/Munich)] yes, you understand correctly, and no I do not agree with your "real world scenarios".
>>>
>> _______________________________________________
>> DiME mailing list
>> DiME@ietf.org
>> https://www.ietf.org/mailman/listinfo/dime
>>
>

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