Interoperable Intelligent Optical Networking: Key to future network services and applications OIF Carrier Group Interoperability: Key issue for carriers and ISPs

Carrier Participation

OIF Carrier Involvement  Carrier’s integral members of OIF: OIF Carrier Working Group Established in 2001 with charter to develop requirements and guidelines for services and functions to be supported by future optical networking products Guiding OIF work to address pressing issues within carrier networks Providing detailed requirements for developing specifications  Carrier participation in other working groups Ensuring that technical solutions being developed address network and service requirements Contributing to technical solutions and interoperability agreements

Intelligent Optical Network: Motivations  Distributed intelligence (control plane)  Mesh topologies  Dynamic network reconfigurability  Network is “database”  New service enabler  Scalability  Reduced carrier-specific management system development  Technology reuse  Reduced inventory and dependence on forecasts  Improved customer service: reduced provisioning times  Reduced capital expenditure – mesh restoration  Reduced management system development costs  Accurate, real-time state information  Bandwidth on Demand  Optical VPNs  Scheduled connections

Intelligent Optical (Transport) Networks Portland Newark Houston Phoenix Salt Lake City Detroit Seattle Raleigh Denver Atlanta Minneapolis Tampa Orlando Chicago St Louis San Diego Intelligent Optical Network Element Cambridge San Francisco Kansas City Los Angeles Dallas Wash.DC Manchester Ft. Lauderdale Phil NY C connection provisioned Transport link Austin

Control Plane Interfaces Service Provider A Admin Domain UNI Inter-carrier External Network Network Interface (E-NNI) Service Provider B Admin Domain I-NNI Domain A1Domain A2 E-NNI Internal-Network Network Interface (I-NNI) I-NNI User Domain A User Domain Z User to Network Interface (UNI) Service provider 1 I-NNI (OIF UNI 1.0 & 2.0) (OIF NNI 1.0) Intra-carrier External Network Network Interface (E-NNI)

OIF Interoperability Agreements  OIF develops interoperability agreements and manages interoperability testing: Physical Link Layer Networking  Networking agreements focused on UNI and intra- carrier E-NNI UNI 1.0 interoperability agreement finalized November 2001 Interoperability event staged Supercomm 2001 and OFC 2003 UNI 2.0 interoperability agreement in progress NNI 1.0 interoperability agreement in progress Capabilities demonstrated in early interoperability event OFC 2003

Network-to-Network Interface (NNI)  NNI: interworking between “control domains” to provide: Summarized topology and reachability information across domains Signaling for connection establishment, removal and restoration  Immediate NNI applications: Interworking between (already deployed) proprietary control planes Scalability Interworking different transport network technologies E.g., all-optical and opto-electronic  NNI 1.0 is scoped to intra-carrier E-NNI

Intra-Carrier NNI Metro-Core Example Metro Intercity Metro Customers Different metro / core domains Different economics Different services  Dissimilar control issues  Different vendors  Multiple profit centers NNI

Optical User to Network Interface (O-UNI)  O-UNI: allows clients (e.g., IP routers) to dynamically request bandwidth from the intelligent optical network Signaling for connection establishment, modification, deletion and query No topology information exchanged between IP and optical network  Potential UNI applications: Reduced operations overheads – simplified provisioning of new IP router connectivity New services: bandwidth on demand, optical Virtual Private Networks (VPNs) Integrated IP and optical failure recovery mechanisms

O-UNI UNI Connection request  Client requests new connection between client source and client destination  Client sees optical network as a “cloud”  Optical network responsible for routing connection to client destination Optical Network

Conclusions  Intelligent optical networking is a reality Large scale network deployments End-to-end provisioning  Implementation agreements and standards are critical to future intelligent optical networks Network-to-Network Interface (NNI) Optical User to Network Interface (UNI)  Carrier participation ensures that developing implementation agreements and standards meet network and service requirements