Reconfigurable Optical Mesh and Network Intelligence Nazar Neayem

Reconfigurable Optical Mesh and Network Intelligence Nazar Neayem Alcatel-Lucent Internet 2 - Summer 2007 Joint Techs Workshop Fermilab - Batavia, IL July 15 -18, 2007.

Network Architecture Evolution § Legacy deployment are based on Ring topology or non-DWDM § Multi layers with different traffic applications § Mesh traffic within the ring § Inter ring traffic is re-generated on the optical layer § Inter ring traffic is generated on layer 2/3 Static Architecture ROADM Rings Full Mesh Network ROADM Rings Interconnect 2 Degree 4 Degree Wavelengths Switched Limited Mesh 2 All Rights Reserved © Alcatel-Lucent 2007, ##### Virtual Rings 3 Degree

Migrating from Static to ROADM to WSS Mesh § Flexibility to support required migration § Short time ROI or pay as you grow § With installed equipment reuse § From Static ROADM § Eliminate stranded bandwidth § Accelerate service provisioning § Eliminate traffic disruption § Support real-time optical monitoring § ROADM WSS § Additional Mesh Flexibility § Colorless ports 3 All Rights Reserved © Alcatel-Lucent 2007, #####

Adaptive and Agile Network § Network is continuous evolving Layer 02/3 § New Applications – VOD, IPTV, Content delivery § New Market Segments § Open and integrated transport interfaces § Routers and switches are having more layer one features § DWDM SFPs are becoming more and more sophisticated § Enhance fault isolation to Layer 1 and L 2/3 network § New transport Rates – 40 G and 100 G § Networks have to adapt to the early technology from early stage specifications to mature technology Tighter L 1 and L 2/3 Network Management 4 All Rights Reserved © Alcatel-Lucent 2007, ##### Layer 0/1

Planning the Mesh Network Plan § Upgrading Nodes § Adding and deleting sites § Wavelengths planning § Wavelength blocking and reuse § Mesh Protection § path or span level WSS protection plans § Circuit verification: § Power, OSNR and dispersion § Since the networks are continuously evolving, active planning the physical layer and circuit growth is essential for network optimization Manages the lifecycle of network design 5 All Rights Reserved © Alcatel-Lucent 2007, #####

Network Intelligence –Deployment § Manual commissioning Mesh network is not easy Deploy Planning Tool § Active comparison between design fiber characteristics and actual measurements Planning output file NMS § Transient Control DWDM Commissioning Report § One amplifier output power setting or changes will affect other directions amplifiers § Network-wide automatic power equalization § Manual equalization becoming extremely difficult § Interconnecting WSS ports will affect the thru traffic in other part of the network Fully Automated Commissioning Hides the Complexity and Guarantees optimal Network Performance 6 All Rights Reserved © Alcatel-Lucent 2007, #####

Network Intelligence – Mesh Circuit Provision § Minimize number of steps to provision a service § Planning Tool pre-provisioning circuit validation § Protection and restoration schemes validation § Unique service per service identity § DWDM Color collision A B C D G 7 All Rights Reserved © Alcatel-Lucent 2007, ##### F E

Network Management Integrated Intelligence Distances, Attenuation (BOL/EOL), CD, Fiber type Network Topology Plan Automatic Design Tool Port Connectivity Network Commissioning file Traffic matrix Traffic Connectivity Design BOM NE Build-up IP adresses, proper SW load NE Commissioning NE discovery (in the field) Power Commissioning Power balancing Network Element 8 Deploy THRU-PATH COMMISSIONING (in the field) NMS (+Trouble shooting) Manage All Rights Reserved © Alcatel-Lucent 2007, ##### Transponder Wiring Add Service SERVICE COMMISSIONING

Conclusion § Optical Layer is migrating from ROADM rings to all optical mesh powered by the Wavelength Selective Switch (WSS) § New applications driving continual growth and different traffic patterns, and higher bit-rates on links § Network Convergence Combined with L 3 alien DWDM interfaces § Active and pro-active network awareness driving new techniques for directly monitoring DWDM networks § As network growing in size and complexity, network intelligence is hiding the complexity As Optical Networks Migrating into Mesh Network Intelligence is Becoming more Essential 9 All Rights Reserved © Alcatel-Lucent 2007, #####