Re: [CCAMP] draft-ali-ccamp-rc-objective-function-metric-bound-03.txt
John E Drake <jdrake@juniper.net> Fri, 09 August 2013 22:10 UTC
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From: John E Drake <jdrake@juniper.net>
To: Lou Berger <lberger@labn.net>
Thread-Topic: [CCAMP] draft-ali-ccamp-rc-objective-function-metric-bound-03.txt
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Date: Fri, 09 Aug 2013 22:01:31 +0000
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Cc: "CCAMP (ccamp@ietf.org)" <ccamp@ietf.org>
Subject: Re: [CCAMP] draft-ali-ccamp-rc-objective-function-metric-bound-03.txt
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Lou, The last time I checked, PCE supported multi-layer path computation. Btw, given this discussion, I found the following draft to be rather interesting: http://datatracker.ietf.org/doc/draft-ietf-pce-pcep-service-aware/ Yours Irrespectively, John > -----Original Message----- > From: Lou Berger [mailto:lberger@labn.net] > Sent: Friday, August 09, 2013 2:51 PM > To: John E Drake > Cc: Matt Hartley (mhartley); Fatai Zhang; CCAMP (ccamp@ietf.org) > Subject: Re: [CCAMP] draft-ali-ccamp-rc-objective-function-metric-bound- > 03.txt > > John, > So how does a PCE *in the server layer* learn about the service > parameters desired by for an LSP, e.g., desired LSP latency, signaled across a > UNI? > > Now certainly a PCE server in the client layer is a different matter. > > BTW I'm not advocating any particular draft or solution in this message, I'm > just trying to understand your model. I do agree that it's always best to > understand what is needed/missing before jumping into discussions on > solution details. > > Lou > > On 08/09/2013 05:22 PM, John E Drake wrote: > > 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 > >>> > >>> > >>> _______________________________________________ > >>> CCAMP mailing list > >>> CCAMP@ietf.org > >>> https://www.ietf.org/mailman/listinfo/ccamp > >>> _______________________________________________ > >>> CCAMP mailing list > >>> CCAMP@ietf.org > >>> https://www.ietf.org/mailman/listinfo/ccamp > >> > > > > > > _______________________________________________ > > CCAMP mailing list > > CCAMP@ietf.org > > https://www.ietf.org/mailman/listinfo/ccamp > > > >
- [CCAMP] draft-ali-ccamp-rc-objective-function-met… John E Drake
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… Fatai Zhang
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… Zafar Ali (zali)
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… John E Drake
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… Zafar Ali (zali)
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… John E Drake
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… Matt Hartley (mhartley)
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… John E Drake
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… Lou Berger
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… John E Drake
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… Lou Berger
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… Daniele Ceccarelli
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… John E Drake
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… Fatai Zhang
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… Daniele Ceccarelli
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… John E Drake
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… Fatai Zhang
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… Daniele Ceccarelli
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… Zafar Ali (zali)
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… Gert Grammel
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… John E Drake
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… Zafar Ali (zali)
- Re: [CCAMP] draft-ali-ccamp-rc-objective-function… John E Drake