[Nsi-wg] New state machine with two phase reserve and modify

[John MacAuley]

----- Original Message -----
> From: "Chin Guok" <chin at es.net>
> To: "Henrik Thostrup Jensen" <htj at nordu.net>
> Cc: "NSI Working Group" <nsi-wg at ogf.org>
> Sent: Wednesday, July 4, 2012 10:31:38 AM
> Subject: Re: [Nsi-wg] New state machine with two phase reserve and modify
> 
> Hi Henrik,
> 
> Actually the IDCP has a single phase reservation workflow.  That is
> the
> reason why it explicitly only supports the chain model.  The
> provisioning workflow however is more like a two-phase comment.  It
> was
> initially a single phase commit, but was redesigned to better support
> the auto-timer triggered provisioning.
> 
> I'm just say'in :)
> 
> - Chin
> On 7/4/12 5:20 AM, Henrik Thostrup Jensen wrote:
> > Hi
> >
> > On Mon, 2 Jul 2012, John MacAuley wrote:
> >
> >> Here is the new and improved NSI CS state machine fresh off the
> >> presses and ready for your viewing pleasure.  Please study it and
> >> prepare questions for the Wednesday call.
> >
> > I missed the call last week (because I love sitting in airplanes),
> > but
> > could you please explain why we need two phase reserve? (and modify
> > as
> > well though that one makes more sense).
> >
> > IDCP have two phase ... everything (more or less), and the main
> > result
> > of this was that the implementations became extremely complex and
> > error handling even worse (often lacking).
> >
> > Two phase looks really nice from a distance. Until you are in the
> > middle of it and there are crying babies and bleeding people
> > everywhere :-).
> >
> >
> >     Best regards, Henrik
> >
> >  Henrik Thostrup Jensen <htj at nordu.net>
> >  Software Developer, NORDUnet
> >
> > _______________________________________________
> > nsi-wg mailing list
> > nsi-wg at ogf.org
> > https://www.ogf.org/mailman/listinfo/nsi-wg
> 
> 
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