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Re: [netmod] Use feature to advertise pre-nmda-support {was: WG Last Call: draft-ietf-netmod-rfc7223bis-00 ]

Balazs Lengyel <balazs.lengyel@ericsson.com> Mon, 04 December 2017 09:21 UTC

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To: Randy Presuhn <randy_presuhn@alumni.stanford.edu>, netmod@ietf.org
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From: Balazs Lengyel <balazs.lengyel@ericsson.com>
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Subject: Re: [netmod] Use feature to advertise pre-nmda-support {was: WG Last Call: draft-ietf-netmod-rfc7223bis-00 ]
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On 2017-12-01 23:41, Randy Presuhn wrote:
> Hi -
>
> On 12/1/2017 3:37 AM, Balazs Lengyel wrote:
>> Hello,
>>
>> https://tools.ietf.org/html/rfc7950#section-7.21.2
>>
>>     o  "deprecated" indicates an obsolete definition, but it permits
>>        new/continued implementation in order to foster interoperability
>>        with older/existing implementations.
>>
>> This means that a node that is deprecated MAY or MAY NOT be implemented.
>> YANG is considered an interface contract,  however "maybe 
>> implemented" is unusable in a contract.
>
> From a client perspective, access control can have similar consequences.
> A contract only outlines some of the kinds of things that
> might possibly exist.  It doesn't tell you what's actually there or
> whether you're allowed to do anything with them.
>
> Randy
BALAZS : Disagree. From a client point of view it may look like the 
same, but from an operator (company) point of view it is different. If I 
am an operator like Vodafone or ATnT, if the restriction is based on 
access control, I can change my procedures to permit the usage. However 
if something is removed based on deprecated, I have no solution.

-- 
Balazs Lengyel                       Ericsson Hungary Ltd.
Senior Specialist
Mobile: +36-70-330-7909              email: Balazs.Lengyel@ericsson.com

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