Re: [ippm] Benjamin Kaduk's No Objection on draft-ietf-ippm-twamp-yang-11: (with COMMENT)

[Benjamin Kaduk <[e-mail]>]

Hi Al,

On Tue, Jun 19, 2018 at 08:06:55PM +0000, MORTON, ALFRED C (AL) wrote:
> Hi Ben,
> 
> Just looking at your first comment for now:
> > 
> > ----------------------------------------------------------------------
> > COMMENT:
> > ----------------------------------------------------------------------
> > 
> > Perhaps I am confused and/or misreading things, but the descriptions
> > of the control-client and session-reflector include discussion of
> > 'sid' session identifiers as if they were always used, but the mode
> > bitmap includes a separate bit for negotiation of
> > 'individual-session-control' for session identifier usage.  Is there
> > some conflict between this mandatory/negotiable distinction, or are
> > they actually talking about different things?
> [acm] 
> 
> Yes, there is a small amount of confusion, easily 
> rectified I think.
> 
> All test sessions are assigned Session IDs (SIDs).
> Each SID is assigned during the session setup phase of operation.
> 
> All test sessions START and STOP with the those commands,
> *unless* the individual-session-control feature has been negotiated:
> 
>    [RFC5938] ... describes an OPTIONAL feature for TWAMP.  [RFC5357] TWAMP
>    (and OWAMP) start all previously requested and accepted test sessions
>    at once.  This feature allows the Control-Client to control
>    individual test sessions on the basis of their Session Identifier
>    (SID).  This feature permits a short-duration TWAMP test to start
>    (and/or stop) during a longer test.  This feature permits a specific
>    diagnostic test to begin if intermediate results indicate that the
>    test is warranted, for example.
> 
> Let us know if there is specific text you would like to modify,
> to avoid any confusion...

Thanks for the explanation.  I don't see any need to modify the text;
someone who actually pulls the references has a clear picture of what's
going on as-is.

-Benjamin