Re: [Ntp] 16 bit extension numbers

Karen O'Donoghue <odonoghue@isoc.org> Thu, 20 February 2020 02:38 UTC

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From: Karen O'Donoghue <odonoghue@isoc.org>
To: Harlan Stenn <stenn@nwtime.org>, Watson Ladd <watsonbladd@gmail.com>
CC: NTP WG <ntp@ietf.org>
Thread-Topic: [Ntp] 16 bit extension numbers
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Date: Thu, 20 Feb 2020 02:38:43 +0000
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Subject: Re: [Ntp] 16 bit extension numbers
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Yes please... repeat your responses so that we have the points to consider in the context of the current conversation. 

And please, remember that time has moved on and any agreements made for early versions of NTS are no longer binding. 

Karen

´╗┐On 2/19/20, 8:41 PM, "ntp on behalf of Harlan Stenn" <ntp-bounces@ietf.org on behalf of stenn@nwtime.org> wrote:

    I will hold my response until either/both of the Chairs responds.
    
    H
    
    On 2/19/2020 5:27 PM, Watson Ladd wrote:
    > 
    > 
    > On Wed, Feb 19, 2020, 5:17 PM Harlan Stenn <stenn@nwtime.org
    > <mailto:stenn@nwtime.org>> wrote:
    > 
    >     Do I need to repeat why this is a bad idea?
    > 
    > 
    > What is a bad idea? TLS does just fine with a flat extension space.
    > 
    > 
    >     H
    > 
    >     On 2/19/2020 5:08 PM, Watson Ladd wrote:
    >     > Dear all,
    >     >
    >     > The value of having all 16 bits available, and reserving 1/2 the space
    >     > (or maybe a bit less) as experimental is tremendous: it means we don't
    >     > have to worry about coordinating values and can let IANA assign them
    >     > from the bottom to the top of the space.
    >     >
    >     > Grouping related extensions by having a code and a type as Harlan is
    >     > proposing wastes space: a type with no codes consumes 256 possible
    >     > extension values, and the greatest number of codes ever used is 10.
    >     > Each flag bit cuts the number of extensions in half: one has to be
    >     > really sure that bit is valuable, and they aren't: one of them is
    >     > depreciated and reserved for a protocol you shouldn't use.
    >     >
    >     > I don't see any reason to be so profligate.
    >     >
    >     > Sincerely,
    >     > Watson
    >     >
    >     > _______________________________________________
    >     > ntp mailing list
    >     > ntp@ietf.org <mailto:ntp@ietf.org>
    >     > https://www.ietf.org/mailman/listinfo/ntp
    >     >
    > 
    >     -- 
    >     Harlan Stenn <stenn@nwtime.org <mailto:stenn@nwtime.org>>
    >     http://networktimefoundation.org - be a member!
    > 
    >     _______________________________________________
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    > 
    
    -- 
    Harlan Stenn <stenn@nwtime.org>
    http://networktimefoundation.org - be a member!
    
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