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

All Rights Reserved © Alcatel-Lucent 2007, ##### 2 | Reconfigurable Mesh | July 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 Wavelengths Switched ROADM Rings Interconnect Static ArchitectureROADM Rings Limited Mesh 3 Degree 4 Degree Full Mesh Network 2 Degree Virtual Rings

All Rights Reserved © Alcatel-Lucent 2007, ##### 3 | Reconfigurable Mesh | July 2007 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

All Rights Reserved © Alcatel-Lucent 2007, ##### 4 | Reconfigurable Mesh | July 2007 Adaptive and Agile Network  Network is continuous evolving  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 L2/3 network  New transport Rates – 40G and 100 G  Networks have to adapt to the early technology from early stage specifications to mature technology Layer 0/1 Layer 02/3 Tighter L1 and L2/3 Network Management

All Rights Reserved © Alcatel-Lucent 2007, ##### 5 | Reconfigurable Mesh | July 2007 Planning the Mesh Network  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 Plan Manages the lifecycle of network design

All Rights Reserved © Alcatel-Lucent 2007, ##### 6 | Reconfigurable Mesh | July 2007 Network Intelligence –Deployment  Manual commissioning Mesh network is not easy  Active comparison between design fiber characteristics and actual measurements  Transient Control  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 NMS Planning Tool Planning output file Commissioning Report Deploy DWDM

All Rights Reserved © Alcatel-Lucent 2007, ##### 7 | Reconfigurable Mesh | July 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

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

All Rights Reserved © Alcatel-Lucent 2007, ##### 9 | Reconfigurable Mesh | July 2007 Conclusion As Optical Networks Migrating into Mesh Network Intelligence is Becoming more Essential  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 L3 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

All Rights Reserved © Alcatel-Lucent 2007, ##### 10 | Reconfigurable Mesh | July 2007 Thank you