> > Hi Folks, > Hi, > I support completion of the GMPLS PCE extensions, but I did have a couple of > questions on the draft: > > 1) How are the label set and suggested label objects used, given that > labels are local > significance? Are these used only for the egress interface?
The label set and suggested label are used to restrict the label for a given layer with end-to-end scope, the switching type and encoding are provided to interpret correctly the labels and scope the layer (for instance when combined with the inter-layer document where the path can use several layers). The switching type and encoding should in my opinion provide enough information to decode the label. If you think this is not enough, examples would be greatly appreciated. > > 2) Switching Type and LSP Encoding Type look like they could be in two > spots, in the SWITCH-LAYER > object and in the ENDPOINTS object Label_Request TLV did I misread > this? > Or if this is correct, when would you use one vs. the other? In fact they could be in more than two spot, considering the inter-layer extensions :-) In case of mono-layer request they should be consistent, but in case of inter-layer requests the TE-LSP endpoint and layers considered might not have the same switching capabilities. Having separate switching type and encoding for the endpoint is explained in the document: "The REQ-ADAP-CAP object from [I-D.ietf-pce-inter-layer-ext] can be used in case of mono-layer request, however in case of multilayer it is possible to have in the future more than one object, so it is better to have a dedicated TLV for the label and label request (the scope is then more clear). " > > I did not find this on the archives, my apologies if this has been asked and > answered before. I do not recall those to be asked. I hope the document and my answers address fully your questions. Any other clarification/questions is appreciated. Best regards, Cyril > > Cheers, > >Lyndon _______________________________________________ Pce mailing list [email protected] https://www.ietf.org/mailman/listinfo/pce
