IETF 49th Meeting - San Diego

1. draft-papadimitriou-onni-frameD.Papadimitriou, M.Fontana, G.Grammel (Alcatel)Y.Xu, Z.Lin, S.Sankaranarayanan (Lucent)R. Jain (Nayna)Y.Cao (Sycamore)Y. Xue (UUNet) Optical-NNI Framework and Signaling Requirements IETF 49th Meeting - San Diego

2. SCOPE • Non-Packet Switch Capable Networks • Fiber switch capable • Lambda switch capable • Circuit switch capable • Signaling protocol refers to G-MPLS • Convergence between • work done at the OIF and at IETF • Intra-domain and Inter-domain NNI specifications

3. Main Principles and Approaches • This proposal covers: • MCT Approach: Management - Control - Transport Planeswith de-coupled and tightly-coupled address spaces. • Centralized (Control point) and Distributed Signaling • Intra-Domain (IaDI) NNI and Inter-Domain (IrDI) NNI • Trusted and Untrusted NNI interfaces • Protocol implementation independent (signaling, routing, and other specific mechanisms) • In-band, out-of-band, and out-of-network signaling transport • Scalable and flexible

4. MCT Approach Management Plane Management Channels Control Channels Control Plane Transport Channels Transport Plane Distributed

5. Topology and resource Distribution (TrD) The draft describes: • Discovery Functions • Logical link Resource, Service and Address discovery • Flooding Scope • Service Discovery (Link local advertisement) • Intra-area summary advertisements • Inter-area summary advertisements • Advertisements including • Identification information (only for link local advertisements) • Resource information (available and min-max reservable FB[Priority]) • Protection information (levels, groups, status and associated priority) • Logical link G.LSP inclusion set (routing diversity)

6. Requirements for a Signaling Protocol • Robust and Scalable • Model independent • Specification of G-LSP resources • G-LSP create/modify/delete/status request and response • Flexibility in G-LSP creation options • Support of G-LSP priority/preemption • Protected G-LSP creation and Restoration capabilities • Availability, Security and Performance of the Signaling channels (max RTT for a given payload size)

7. NNI Signaling Parameters • Source and Destination ID • Source and Destination VPoN ID • Carrier ID (Inter-domain) • G-LSP ID • Explicit route and Record route (optional) • Directionality (optional) • Priority - Preemption (optional) • Bandwidth-Framing[priority] • Protection[priority] (optional) • SDH/Sonet or Optical Parameter (optional) • Routing Diversity-related information (optional)

8. OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC Hierarchical Network Model - Intra-Domain Routing Source Area 10 Area 20 Intermediate Source IaDI-NNI Intermediate IaDI-NNI Intermediate Destination IaDI-NNI Area 0 Area 40 Area 30 Destination

9. OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC OXC Hierarchical Network Model - Inter-Domain Routing Source IaDI Intermediate IaDI Source IrDI AS 5623 AS 2510 eBGP eBGP Source IaDI Dest. IaDI Destination IaDI eBGP eBGP BGP Transit Area Destination IrDI AS 6548 AS 9802 IrDI : Inter-Domain IaDI : Intra-Domain

10. Next Steps • Improve procedures (fault-tolerance, protection and restoration) • Enhance diversity-related flooding • Extensions for multi-wavelength connections • Add state-diagrams for signaling and topology & resource distribution mechanisms • Inter-domain routing extensions

11. CONCLUSION • NNI signaling is required for G-LSPs spanning multi-carrier networks • Covers all different types of optical networks (e.g. SDH/Sonet, OXC, PXC based networks) • Compatible with G-MPLS paradigmAllows extending G-MPLS to multi-domain networks • Consistent with the work done at the OIF This should facilitate easy transition

12. Objective