Hi Fatai, I am also happy to see work going in this direction. I have some questions and remarks on your draft.
Section "4.1. RP Object Extension" The NT field is specifying for which kind of network the request is. I think the information on the type on network could also be represented by SWITCH-LAYER object from draft-ietf-pce-inter-layer-ext. This information seems also redundant with the encoding and switching type provided in the "4.1.1. Requested GMPLS Label Information". Its also not clear to me what is the processing of this field, especially in the case of multilayer network type. Regarding "4.1.1. Requested GMPLS Label Information", its stated that this object is used if the resources required are requested using generalized label. Is this to be used in a PCReq or PCRep? To which generalized labels does this subtlv-refers to, I can see label in the ERO and the other route object, but those may represent a multi-layer route, where the generalized labels might have different encodings. Which labels are meant here? in case a multilayer request is considered and a generalied label is used, the PCEP may carry labels for several layers, so only considering the first "Requested GMPLS Label Information " subtlv may not be sufficient, on the other hand its For the Qos section, the section 4.4.1 does not allow different forward/reverse Traffic spec as in RFC5467, and its not clear how to distnguish the old QoS from the new Qos in case of reoptimization requests. In "4.4.2. LSP Protection Information TLV", I think reusing the RFC4872 and RFC3471 LSP flags and Link flags would be more in line with RSVP-TE signaling. In this section its not clear on how to use the Protection information, some fields seems to go in the direction of a statefull PCE (Segment Recovery, Associated LSP ID), however its not clear how those fields are to be used and processed, for instance the associated LSP id can be used only if the LSP ids are known to the PCE. I am looking forward to discuss those two draft with you. Thanks, Cyril Margaria > ----- Original Message ----- > From: ext Fatai Zhang [mailto:[email protected]] > Sent: Wednesday, January 06, 2010 2:34 AM > To: Margaria, Cyril (NSN - DE/Munich) > Cc: [email protected]; [email protected] > Subject: Re: [Pce] New draft: draft-margaria-pce-gmpls-pcep-extensions-00 > > > Hi Cyril, > > What a coincidence to see your draft after we just submited our draft > (draft-zhang-pce-pcep-extensions-for-sdh-00.txt) [draft-zhang-pcep-ext]. > > Great minds think alike. Happy to see that happened. > > Hope you can spare some time to review [draft-zhang-pcep-ext]. We are looking > forward to discussing more with you. > > We also invite all the experts from PCE WG to review [draft-zhang-pcep-ext]. > > > > Thanks > > Fatai > > Advanced Technology Department > Wireline Networking Business Unit > Huawei Technologies Co., LTD. > Huawei Base, Bantian, Longgang, > Shenzhen 518129 P.R.China > Tel: +86-755-28972912 > Fax: +86-755-28972935 > > > > > ----- Original Message ----- > > From: "Margaria, Cyril (NSN - DE/Munich)" <[email protected]> > > To: <[email protected]> > > Sent: Tuesday, January 05, 2010 5:44 PM > > Subject: [Pce] New draft: draft-margaria-pce-gmpls-pcep-extensions-00 > > > > > > > > Dear PCEers, > > > > We have just submitted a new drat on "PCEP extensions for GMPLS". > > The draft specifies optional extensions to the PCEP protocol to comply with > > the GMPLS requirements for PCEP. These extensions may be also applicable in > > the WSON context. > > We urge you to review the draft and provide your valuable comments. > > The draft can be found at > > http://www.ietf.org/internet-drafts/draft-margaria-pce-gmpls-pcep-extensions-00.txt > > > > > > Thanks and best regards, > > Cyril Margaria > > > > Nokia Siemens Networks GmbH & Co. KG > > Broadband Connectivity Solutions > > St.Martin-Str. 76 > > D-81541 München > > Germany > > mailto:[email protected] > > Phone: +49-89-5159-16934 > > Fax: +49-89-636-40288 > > ---------------------------------------------------------------- > > Nokia Siemens Networks GmbH & Co. KG > > Sitz der Gesellschaft: München / Registered office: Munich > > Registergericht: München / Commercial registry: Munich, HRA 88537 > > WEEE-Reg.-Nr.: DE 52984304 > > > > Persönlich haftende Gesellschafterin / General Partner: Nokia Siemens > > Networks Management GmbH > > Geschäftsleitung / Board of Directors: Lydia Sommer, Olaf Horsthemke > > Vorsitzender des Aufsichtsrats / Chairman of supervisory board: Lauri > > Kivinen > > Sitz der Gesellschaft: München / Registered office: Munich > > Registergericht: München / Commercial registry: Munich, HRB 163416 > > > > _______________________________________________ > > Pce mailing list > > [email protected] > > https://www.ietf.org/mailman/listinfo/pce _______________________________________________ Pce mailing list [email protected] https://www.ietf.org/mailman/listinfo/pce
