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 LakeCity

Detroit

Seattle

Raleigh

Denver

Atlanta

Minneapolis

Tampa

Orlando

Chicago

St Louis

San Diego

Intelligent Optical Network Element

Cambridge

San Francisco

KansasCity

Los Angeles

Dallas

Wash.DC

Manchester

Ft. Lauderdale

Phil

NYC

connectionprovisioned

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 A1 Domain A2E-NNI

Internal-Network Network Interface (I-NNI)

I-NNI

UserDomain A

UserDomain Z

User to Network Interface (UNI)

Service provider 1

I-NNI

(OIF UNI 1.0 & 2.0)

(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 NNIMetro-Core Example

MetroMetro

Intercity Intercity

MetroMetro

CustomersCustomers

•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

OpticalNetwork

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