Industry Perspectives on Optical Networking Progress in optical

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

Dynamic Multilevel Architectures Three Principle Transport Methods Motivation » Reduce Cap. Ex – Optimize transport choice » Reduce Op. Ex – Automate transport » Improve Performance - Lower latency, bandwidth guarantee, improved security 2 Revenue Generating Services End-user Services Service offerings at multiple network layers IP/MPLS Layer 2 Convergence MPLS Intelligent Circuits Layer 1 Convergence Intelligent Circuits GFP-VC-LCAS Agile WDM Layer 0 Convergence Agile WDM © 2005 Ciena Communications, Inc. • IP/MPLS for Packet Services • SONET/SDH/OTN for Sub-l Circuit Services • Agile WDM for l Circuit Services Relative Switching Costs MPLS IOS WDM 5 1 1 10 2 0. 2 Interface Cost Express Cost

Optical Control Plane Benefits Optical control plane enables» Dynamic bandwidth services » Multivendor service activation » Improved manageability Multivendor Service Activation Dynamic Bandwidth Services Application Servers Modify bandwidth based on application needs Improved Manageability Control plane standards accelerate interoperability and simplify management system development 3 © 2005 Ciena Communications, Inc. • Auto-discovery • Auto-provisioning • Network is the database • End-to-end service management

Key Optical Networking Standards Control Plane Standards ITU-T G. ASON IETF GMPLS Data Adaptation to SONET/SDH Domain Model Optical Services Client A UNI Domain B Domain A E-NNI Virtual Concatenation Client B Domain C Generic Framing Procedure Peer Model Integrated Control of IP and Optical Network Link Capacity Adjustment Scheme 4 © 2005 Ciena Communications, Inc.

5 © 2005 Ciena Communications, Inc.

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 (1 Gb/s) on a mix of SONET/SDH payload options 6 © 2005 Ciena Communications, Inc.

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 7 » 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 © 2005 Ciena Communications, Inc.

OIF World Interoperability Event Super. Com – June 2004 Testing -OIF UNI 1. 0 – optical service interface -OIF ENNI – inter-domain optical interface -Ethernet over wide area transport Testing carried out in 7 interconnected carrier labs over several months » China Telecom » KDDI Labs » NTT » Deutsche Telekom 8 15 Participating Vendors » ADVA » Alcatel » Avici Systems » CIENA Corp. » Cisco Systems » Fujitsu » Lucent Technologies » Mahi Networks » Marconi » NEC » Nortel Networks » Telecom Italia » Siemens » AT&T » Sycamore Networks » Verizon » Tellabs © 2005 Ciena Communications, Inc. » Turin Networks

OIF World Interoperability Demonstration at Supercomm 2004 9 © 2005 Ciena Communications, Inc.

Ethernet over dynamic transport network Customer 1 Access GE Sonet VC 1 GE Sonet VC 2 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 10 © 2005 Ciena Communications, Inc.

Multiple Ethernet services on transport network Customer Access GE VCG GE Customer Access VCG Transport service connects multiple access ports – TDM: Channelized STS’s – VLAN: Flows switched based on VLAN tag 11 © 2005 Ciena Communications, Inc. GE VCG

OIF Interoperability In Progress UNI 2. 0 Ethernet Client network D Client network E Optical network A MSPP (UNI 1. 0 R 2) Client network C Optical network B MSPP I- NNI E- NNI UNI 2. 0 Ethernet Carrier domain I- NNI (UNI 1. 0 R 2) UN I Client network B Client network F UNI – User to network interface I-NNI – Internal network to network interface E-NNI – External network to network interface 12 © 2005 Ciena Communications, Inc. Client network A

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 13 © 2005 Ciena Communications, Inc.

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