[Pce] comments on draft-ietf-pce-pcecp-interarea-reqs-00.txt
dimitri papadimitriou <dpapadimitriou@psg.com> Mon, 13 February 2006 16:10 UTC
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Date: Mon, 13 Feb 2006 17:10:56 +0100
From: dimitri papadimitriou <dpapadimitriou@psg.com>
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Subject: [Pce] comments on draft-ietf-pce-pcecp-interarea-reqs-00.txt
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folks, the document mentions "A solution for computing inter-area TE-LSP path relies on a per domain path computation ([PD-COMP]). It is based on loose hop routing with an ERO expansion on each ABR. This can allow setting up a constrained path, but faces two major limitations: -This does not allow computing an optimal constrained path -This may lead to several signalling crankback messages and hence delay the LSP setup, and invoke routing activities. " optimal computation does not imply resource reservation, hence a PCE functionality does not prevent from crankback section 5 present two models, would it be possible to consider that homogeneity is not necessarily verified, e.g. an area having a single ABR does not a PCE to reach the local exit point section 7.13 should discuss scaling wrt to the TEDB wrt to single PCE model it is stated that such consideration is beyond the scope of the document i would more than certainly re-consider this since this a necessary condition for supporting the "all area" PCE model (is this not a single point of failure ? or are specifics in terms of resilience outside the scope of this document) thanks, - dimitri. _______________________________________________ Pce mailing list Pce@lists.ietf.org https://www1.ietf.org/mailman/listinfo/pce
- [Pce] comments on draft-ietf-pce-pcecp-interarea-… dimitri papadimitriou
- RE: [Pce] comments on draft-ietf-pce-pcecp-intera… LE ROUX Jean-Louis RD-CORE-LAN
- Re: [Pce] comments on draft-ietf-pce-pcecp-intera… dimitri papadimitriou
- RE: [Pce] comments on draft-ietf-pce-pcecp-intera… LE ROUX Jean-Louis RD-CORE-LAN