Hi, Thank you for the reply. IMPO there is a need for such a functionality: if after all the PCEs processing work we have to rely on crankback, then the question is why do we use PCEs at the first place. There may also be other use cases that can benefit from prereservation, and we should not only consider this from a "cranckback saving" angle.
It seems that there are 2 distinct points to the discussion regarding the draft: 1- Consensus that there is a problem if resources are not pre-reserved. 2- There are various ways to solve this problem, each with pros and cons. I think point #1 is clear enough to anyone who faced or studied the problem. And if I recall correctly, the comments after Oscar's presentation (including those regarding the NMS-PCE relation) were all related to point #2 above. I think these comments can all be addressed by the wg. Best regards, Meral -----Original Message----- From: Julien Meuric [mailto:[email protected]] Sent: April-11-12 10:39 AM To: Meral Shirazipour Cc: JP Vasseur; [email protected] Subject: Re: [Pce] draft-gonzalezdedios-pce-reservation-state-01 next step ? Hi Meral. I believe the freshly posted minutes bring an answer to you question. Beyond the generic scope in which this I-D was presented, I feel the advantages and drawbacks of that proposal are off balance. On the one hand, focusing on a single PCE solution removes a lot from the PCE architecture (or requires heavy complementary mechanisms, i.e. yet another strong shortcoming). On the other hand, it aims at "saving a few crankbacks" (quoting Oscar) in the control plane, which is likely to end up by saving a negligible time with respect to the data plane timescale, especially for WDM where the label resource is scarcer (1st and longer use case in the draft). Finally, knowing that an implementation could make use of the proposed idea based on a simple PCE policy, such an unbalanced protocol extension seems more than questionable... Regards, Julien Le 29/03/2012 19:55, Meral Shirazipour a écrit : > > Hi JP, > > I may have missed part of the discussion today after Oscar > presented. What was the next step for draft: > http://tools.ietf.org/html/draft-gonzalezdedios-pce-reservation-state-01 ? > > Thanks, > > Meral > > > _______________________________________________ > Pce mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/pce _______________________________________________ Pce mailing list [email protected] https://www.ietf.org/mailman/listinfo/pce
