1. draft-oki-pce-vntm-def-00.txt 1 Definition of Virtual Network Topology Manager (VNTM) for PCE-based Inter-Layer MPLS and GMPLS Traffic Engineering draft-oki-pce-vntm-def-00.txt July 13, 2006 Eiji Oki (NTT) Jean-Louis Le Roux (France Telecom) Adrian Farrel (Old Dog Consulting)

2. draft-oki-pce-vntm-def-00.txt 2 Background Virtual Network Topology (VNT) needs to be controlled and managed in cooperation with inter-layer path computation. VNTM appears in a PCE-VNTM cooperation model for inter-layer path control (draft-ietf-pce-inter-layer-frwk-01). –VNTM is considered as a functional element. Definition of Virtual Network Topology Manager (VNTM) is required. –for use in the PCE context –but not to provide a full framework and definition for VNT Manager. (response to Dimitri’ comments on the list.)

3. draft-oki-pce-vntm-def-00.txt 3 Draft overview Cooperation model between PCE and VNTM for Inter-Layer Path Control VNT Management Functions of VNT Manager

4. draft-oki-pce-vntm-def-00.txt 4 PCE-VNTM cooperation model PCE performs inter-layer path computation. VNTM controls lower-layer path setup. 7 VNT Manager PCE Ingress Egress L1L2 H1 H2H3H4 H5 Lower-layer network High-layer network L3 1 2 3 5 6 4 Mono-layer path: H1-H2-H4-H5 8

5. draft-oki-pce-vntm-def-00.txt 5 PCE-VNTM cooperation model (cont’d) Extend the basic PCE-VNTM cooperation model to the case of multiple PCEs. PCE-Hi and PCE-Lo have each layer’s TE topology, respectively. 9 VNT Manager PCE-Hi Ingress Egress L1L2 H1 H2H3H4 H5 Lower-layer network (GMPLS network) High-layer network (MPLS network) L3 1 2 5 7 8 6 10 PCE-Lo 3 4

6. draft-oki-pce-vntm-def-00.txt 6 Functions of VNT Manager Lower-layer LSP Setup Advertisement of the VNT to the Higher Layer Policy Control

7. draft-oki-pce-vntm-def-00.txt 7 Next step… Request for feedback –Continue discussion on VNTM functions. Can this become a WG document?