Industry Perspectives on Optical Networking

1. Industry Perspectives on Optical Networking Progress in optical control plane interoperability Joe Berthold May 3, 2005

2. Dynamic Multilevel Architectures Three Principle Transport Methods Service offerings at Service offerings at Service offerings at Service offerings at Service offerings at Service offerings at Service offerings at Service offerings at Revenue Generating Services Revenue Generating Services Revenue Generating Services End-user Services multiple network layers multiple network layers multiple network layers multiple network layers multiple network layers multiple network layers multiple network layers multiple network layers Layer 2 Convergence Layer 2 Convergence Layer 2 Convergence Layer 2 Convergence Layer 2 Convergence Layer 2 Convergence Layer 2 Convergence Layer 2 Convergence IP/MPLS MPLS MPLS MPLS MPLS MPLS MPLS MPLS MPLS MPLS MPLS MPLS • IP/MPLS for Packet Services • SONET/SDH/OTN for Sub-l Circuit Services • Agile WDM for l Circuit Services Layer 1 Convergence Layer 1 Convergence Layer 1 Convergence Layer 1 Convergence Layer 1 Convergence Layer 1 Convergence Intelligent Circuits Intelligent Circuits Intelligent Circuits Intelligent Circuits Intelligent Circuits Intelligent Circuits Intelligent Circuits Intelligent Circuits Intelligent Circuits Intelligent Circuits GFP GFP GFP - - - VC VC VC - - - LCAS LCAS LCAS GFP GFP GFP - - - VC VC VC - - - LCAS LCAS LCAS Layer 0 Convergence Layer 0 Convergence Layer 0 Convergence Layer 0 Convergence Layer 0 Convergence Layer 0 Convergence Agile WDM Agile WDM Agile WDM Agile WDM Agile WDM Agile WDM Agile WDM Agile WDM Agile WDM Agile WDM • Reduce CapEx – Optimize transport choice • Reduce OpEx – Automate transport • Improve Performance - Lower latency, bandwidth guarantee, improved security Motivation Relative Switching Costs

3. Dynamic bandwidth services Multivendor service activation Improved manageability Optical Control Plane Benefits Application Servers Dynamic Bandwidth Services Optical control plane enables- Multivendor Service Activation Modify bandwidth based on application needs Improved Manageability • Auto-discovery • Auto-provisioning • Network is the database • End-to-end service management Control plane standards accelerate interoperability and simplify management system development

4. Key Optical Networking Standards Virtual Concatenation Generic Framing Procedure Domain Model Optical Services Link Capacity Adjustment Scheme Client B Domain B Domain A Domain C Client A UNI E-NNI Control Plane Standards ITU-T G.ASON IETF GMPLS Data Adaptation to SONET/SDH Peer Model Integrated Control of IP and Optical Network

6. 2004 OIF World Interoperability Demonstration Interoperability of Dynamic Intelligent Optical Networks • Interfaces • O-UNI 1.0 (Optical User Network Interface) • E-NNI 1.0 (External Network to Network Interface) • Interoperability • Network Topology Discovery • Provisioning and Support of Switched High Speed Circuits Ethernet/SONET adaptation using Generic Framing Procedure (GFP) • Capabilities demonstrated • Fast Ethernet (100 Mb/s) on a mix of SONET/SDH payload options • Gigabit Ethernet (1Gb/s) on a mix of SONET/SDH payload options

7. Significance of the Event • Industry’s first time ever worldwide multi-carrier interoperability testing • Carriers’ close involvement and strong support are key to the technology advancing towards industry adoption • Control plane connectivity built out around the world lays the foundation for future testing methodology and infrastructure • Successful control plane and data plane integration validates OIF’s Implementation Agreements • Participation of 15 industry leading vendors and 7 major carriers signifies the wide technology adoption in industry

8. Testing carried out in 7 interconnected carrier labs over several months China Telecom KDDI Labs NTT Deutsche Telekom Telecom Italia AT&T Verizon 15 Participating Vendors ADVA Alcatel Avici Systems CIENA Corp. Cisco Systems Fujitsu Lucent Technologies Mahi Networks Marconi NEC Nortel Networks Siemens Sycamore Networks Tellabs Turin Networks OIF World Interoperability EventSuperCom – June 2004 • Testing • OIF UNI 1.0 – optical service interface • OIF ENNI – inter-domain optical interface • Ethernet over wide area transport

9. OIF World Interoperability Demonstration at Supercomm 2004

10. Ethernet over dynamic transport network Sonet VC1 GE Sonet VC2 GE Customer 1 Access Customer 1 Access Customer 2 Access Customer 2 Access • Transport service connects two access ports: • Ethernet over SONET/SDH connection • Guaranteed bandwidth and latency • Bandwidth adjustable with LCAS • OIF UNI 2.0 adds signaling for Ethernet interfaces

11. Multiple Ethernet services on transport network Customer Access Customer Access VCG GE GE Customer Access VCG • Transport service connects multiple access ports • TDM: Channelized STS’s • VLAN: Flows switched based on VLAN tag VCG GE

12. OIF Interoperability In Progress UNI2.0 Client Client network Ethernet network D A Client network E Optical Optical network MSPP network A B (UNI1.0R2) MSPP I - NNI I - NNI (UNI1.0 E - NNI R2) UN I Carrier UNI2.0 Client domain network Ethernet Client B network C Client network F UNI – User to network interface I-NNI – Internal network to network interface E-NNI – External network to network interface

13. Summary • Control Plane Implementation Status • Over 30 carriers worldwide use optical control planes in live networks • Control Plane Interoperability • Interoperability standards for UNI are complete • Interoperability standards for NNI are progressing • OIF is driving interoperability for ITU-T standards • Ethernet Dedicated Private Line Services • ITU data adaptation standards are complete • Dynamic bandwidth control standards progressing

14. Thank You