On 12/04/16 10:54, Stephen Farrell wrote:
> 
> Michael,
> 
> Which of the IESG statements listed at [1] do you mean?
> That's not clear to me, sorry,

Ah sorry now I see the URL:-)

I doubt that there'll be a problem for this draft from the
IESG, other than the usual nitpicking. That is, unless
someone here wants to write a MIB module I guess but I
didn't think that was suggested.

S.

> S.
> 
> [1] https://www.ietf.org/iesg/statement.html
> 
> On 12/04/16 09:48, Scharf, Michael (Nokia - DE) wrote:
>> Inline <ms>
>>
>> -----Original Message-----
>> From: EXT David Mazieres [mailto:[email protected]] 
>> Sent: Monday, April 11, 2016 6:52 PM
>> To: Scharf, Michael (Nokia - DE); EXT Kyle Rose; tcpinc
>> Subject: Re: [tcpinc] Confirmation of consensus to adopt API document
>>
>> "Scharf, Michael (Nokia - DE)" <[email protected]> writes:
>>
>>> Has the WG discussed the applicability of 
>>> https://www.ietf.org/iesg/statement/writable-mib-module.html to 
>>> Section 2.2?
>>>
>>> I know that this question may be a bit unusal for TSV area and even 
>>> more unusal for this specific use case ;-)
>>>
>>> Also, it may not apply to an informational document. But it could be 
>>> worthwile to review if CLI ("sysctl") is indeed the only known method 
>>> in industry for configuration of network elements implementing TCP.
>>
>> To be clear, the API document presents an abstract API.  The suggestion of 
>> sysctl is for OSes that already do a bunch of TCP configuration via sysctl.  
>> For an OS that loads TCP configuration in some other way, or user-level 
>> implementations that cannot extend sysctl, the same knobs will have to be 
>> made available through a different mechanism.
>>
>> <ms> In IETF terminology, Section 2.2 does not describe an abstract API but 
>> a device configuration datastore, even if that specific terminology may not 
>> be widely used for TCP stack configuration. And formally there is the IESG 
>> statement and that statement could apply to Section 2.2. Thus, the WG may 
>> have to consider whether how to deal with this IESG statement. One option is 
>> a statement that it does not apply but this should be agreed upon 
>> explicitly, not implicitly.
>>
>> The goal is to ensure that whatever mechanism provides these configuration 
>> knobs, roughly the same knobs will be available everywhere so that 
>> configurations can easily be translated between OSes.
>>
>> <ms> Yes, but this is known to be difficult. When RFC 6897 was written, the 
>> consensus in the MPTCP WG was that "sysctl" statements are too 
>> implementation specific to be documented by the IETF. The TCPINC WG can 
>> obviously come to a different conclusion, but given the past consensus in 
>> the MPTCP WG in my opinion this is requires explicit discussion, e.g., what 
>> may be different between TCPINC and MPTCP.
>>
>> If we believe devices currently configured with netconf will someday support 
>> TCPINC, then we can include a paragraph explaining how the API would map to 
>> netconf.  Presumably this would specify some XML path under which to mount 
>> the system-wide options?  Is there precedent for configuring other TCP 
>> parameters with netconf, and if so what does it look like?  Do you want to 
>> suggest some language to include?
>>
>> <ms> It is up to the TCPINC WG consensus to determine how to deal with this 
>> IESG statement. In my reading it is a recommendation only and not mandatory. 
>> That IESG statement was not in place when I wrote RFC 6897, so I assume 
>> there is no precedence how to deal with this.
>>
>> Michael
>>
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> 
> 
> 
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