Re: [CCAMP] draft-ali-ccamp-rc-objective-function-metric-bound-03.txt

John E Drake <jdrake@juniper.net> Fri, 09 August 2013 21:31 UTC

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From: John E Drake <jdrake@juniper.net>
To: "Matt Hartley (mhartley)" <mhartley@cisco.com>, Fatai Zhang <zhangfatai@huawei.com>, "CCAMP (ccamp@ietf.org)" <ccamp@ietf.org>
Thread-Topic: [CCAMP] draft-ali-ccamp-rc-objective-function-metric-bound-03.txt
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Date: Fri, 9 Aug 2013 21:22:39 +0000
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Subject: Re: [CCAMP] draft-ali-ccamp-rc-objective-function-metric-bound-03.txt
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PCEP can be deployed whenever the server network wishes to provide a path computation service.  What possible advantage to anyone is gained by embedding PCEP in RSVP-TE signaling? 

Yours Irrespectively,

John

> -----Original Message-----
> From: Matt Hartley (mhartley) [mailto:mhartley@cisco.com]
> Sent: Friday, August 09, 2013 1:53 PM
> To: Fatai Zhang; John E Drake; CCAMP (ccamp@ietf.org)
> Cc: Matt Hartley (mhartley)
> Subject: RE: [CCAMP] draft-ali-ccamp-rc-objective-function-metric-bound-
> 03.txt
> 
> Fatai, John,
> 
> I don't think you can guarantee that PCE will be deployed absolutely
> everywhere, or that you can guarantee the client will be permitted access to
> the server PCE when it is. In those cases, this draft is useful.
> 
> Cheers
> 
> Matt
> 
> > Hi John,
> >
> > Completely agree.
> >
> > I also raised this comment in front of the mic during Berlin meeting.
> >
> >
> >
> > Best Regards
> >
> > Fatai
> >
> >
> > -----Original Message-----
> > From: ccamp-bounces@ietf.org [mailto:ccamp-bounces@ietf.org] On
> Behalf
> > Of John E Drake
> > Sent: Friday, August 09, 2013 1:49 AM
> > To: CCAMP (ccamp@ietf.org)
> > Subject: [CCAMP]
> > draft-ali-ccamp-rc-objective-function-metric-bound-03.txt
> >
> > Hi,
> >
> > I have a real concern with this draft because it appears to be heading
> > us down the road of re-inventing PCEP in RSVP signaling with the
> > dubious justification that it is needed in those situations in which a
> > PCE is not available.  However, if you re-invent PCEP in RSVP
> > signaling, then you have effectively ensured that there are no
> > situations in which a PCE or its signaling equivalent are not available.
> >
> > Why is this better than simply ensuring that a PCE is available in
> > those situations in which it is needed?
> >
> > Yours Irrespectively,
> >
> > John
> >
> >
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