Transport Architecture Chris Liou Infinera JRA1 T1/T2 Workshop - - PowerPoint PPT Presentation

Evolution of Core Transport Architecture Chris Liou – Infinera JRA1 T1/T2 Workshop - Copenhagen November 20 2012 1 | Infinera Confidential & Proprietary

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What is Happening in the Core? Dynamics & Observations  Increasing capacity growth leads to super-channels • Bandwidth services ≠ Wavelength rates • Decoupling services from wavelengths necessary to maximize flexibility  CapEx pressures forcing platform convergence • Simpler networks, fewer silos  Bandwidth services often unpredictable • Flows increasing in size  Cost/switched-Gb for Transport still << IP • Conventional IP/Optical approach yields sub-optimal utilization • Ample opportunity to re-architect network using switched transport  True control plane interoperability remains elusive 3 | Infinera Confidential & Proprietary

Need to Re-architect the Network Data Center Multiple IP/MPLS Layers in Silos SONET SDH Complex Layers of OTN devices, connections, resources, operations DWDM Service Provider Network 4 | Infinera Confidential & Proprietary

PMO Network Architecture Unscalable “All eggs in one basket” Domain 3 Domain 2 Domain 1 $Cost of BW IP Cntrl plane Cntrl plane Cntrl plane IP Services OTN/Pkt Tied to Dumb Control Plane Opt optics  “Everything -over- IP” approach is over -burdened • Service termination + switching + grooming + transport + protection +… • Optical transport relegated to transmission only  Control plane “locks” service into router platform  No cross-stratum communication  Reactive network planning is de facto pratice 5 | Infinera Confidential & Proprietary

What if it were possible to …  Create network slices between dozens of data centers and millions of users …  Provision network connections over multi-domain packet, optical and LTE networks over the most optimal path automatically…  Roll out new services to users located anywhere in a matter of minutes…  Manage and change of VPN’s, SLA’s, firewalls and switches without a single truck roll…  Support network operating systems & databases, inventory, status at real time, auto provisioned, self monitoring… How can this be achieved with minimum total network cost? 6 | Infinera Confidential & Proprietary

Key Challenges in the Core Max efficiency, Multi-layer, performance, Multi-domain, sharing, Multi-vendor @min OpEx Core Network Network Virtualization Scalable bandwidth Minimize where/when OpEx through needed Automation 7 | Infinera Confidential & Proprietary

Vision for the Optical Core An Infinite Massive WDM Capacity Pool of Virtualized & Flexible Intelligent Automated & Reliable Bandwidth Converged & Optimized Can Bandwidth follow computing & evolve into an on-demand utility? 8 | Infinera Confidential & Proprietary

Key Ingredients of Vision Architecture  Scalable, flexible optical transmission capacity • 100G, FlexCoherent, super-channels  Flexible & rapid turn-up of capacity • Capacity-with-a-click and Bandwidth-on-demand  Multi-tiered transport switching • Optical switching (wavelengths, super-channels, FlexGrid) • Sub-wavelength (digital) for grooming onto carriers (packet, OTN)  Multi-layer, multi-domain, multi-vendor control plane • SDN’s concept of logically centralized topology may be key • Integrated protection/restoration schemes  Automation protocols & programmable APIs • GMPLS coexistence with SDN Convergence is essential for simplifying the network 9 | Infinera Confidential & Proprietary

Hierarchical Bandwidth Management Architecture Optical Bandwidth Mgmt 400/500Gbps and • Flexible ROADM capabilities 1 Tbps super channels ‒ Super-channels, wavelengths Optical ‒ FlexGrid Bandwidth ‒ Configurable capacity/reach Management ‒ Optical restoration Digital Bandwidth Management Multi-Tb OTN • Hybrid circuit/packet switching Switching • Scalable non-blocking switching Digital Core • Multiple protection/restoration Bandwidth Packet schemes Management Switching • Dedicated • Shared Mesh Protection Hybrid switching maximizes efficiency & flexibility. 10 | Infinera Confidential & Proprietary

Economics Drive Platform Convergence in Core Status Quo Phase 1 Phase 2 IP IP IP/MPLS MPLS SONET SDH OTN DWDM Converged MPLS/OTN/DWDM Converged OTN/DWDM (future) 11 | Infinera Confidential & Proprietary

Extending SDN to Transport:  Rapid & Flexible Bandwidth Applications Applications • Turn-up bandwidth quickly to support applications Bandwidth  Simplify/Automate Operations Abstraction SDN • Multilayer, multivendor & multi- Controller domain orchestration Discover,  Efficient Resource Utilization Monitor, Control Physical Resources • Coordinate & optimize between Packet flows layers, select optimal path OTN circuits Optical wavelengths  Speed New Service Deployment • Services created faster w/direct API • Multi-layer • Multi-vendor access to transport • Multi-domain ONF on-going efforts around definition of Open Transport Switch . 12 | Infinera Confidential & Proprietary

Summary  Conventional IP architectural approach does not scale • Router Cost/bit efficiencies not materializing • Over-provisioning methodology  Excessive unutilized capacity  Emerging advances in optical transport layer present new level of flexibility & agility • Scalable WDM with integrated digital/optical switching • Elastic bandwidth can play significant role in router offload & bypass  Multi-layer, multi-vendor, multi-domain complexity has alternative approach • SDN key concepts gaining momentum, but niche applications • SDN extension to transport in process – abstraction is key! 13 | Infinera Confidential & Proprietary

Thank You cliou@infinera.com 14 | Infinera Confidential & Proprietary