SDN FOR IP/OPTICAL TRANSPORT NETWORKS

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1 SDN FOR IP/OPTICAL TRANSPORT NETWORKS Tony Kourlas IP Routing and Transport Group, Alcatel-Lucent April 2014

2 THE EVOLUTION OF IP & OPTICAL NETWORKS Cloud-optimized IP routing & transport IP routing networks Cloud (NFV) Optical transport networks Enterprise Routing (CPU) Internet Routing (Fast Path) Service Routing (NPU) SDN DWDM SONET SDH PDH IP/optical integration 2

3 CLOUD EVOLUTION Enterprise/private cloud Application Private DC Application Private DC Public cloud (SP) IaaS PaaS SP or partner DC SaaS NFV cloud (SP) vnf vnf vnf SP DC Today s cloud: Dynamic, application-driven, pay-as-you-go IT infrastructure/services Compute/storage agility, scale and efficiency Dynamic inter-dc connectivity Hybrid cloud services MAN/WAN NF Physical & virtualized network assets Real-time network resource selection/allocation/optimization Evolution required: Dynamic, application-driven, pay-as-you-go network services Network agility, scale and efficiency Enterprise branch 3

4 TODAY S MANS/WANS ARE NOT OPTIMIZED FOR CLOUD OSS / Applications IT integration complexity Proprietary, low-level network interfaces Integration Provisioning Integration Provisioning Network functions tied to custom silicon Network service innovation, delivery, & optimization are: complex slow inefficient Back-door manual configuration errors Fragmented/limited network visibility and control impacts efficiency, agility & user experience 4

5 CLOUD-OPTIMIZED NETWORK ARCHITECTURE Cloud services & capabilities IT and Application Services Virtualized Network Functions Network Controlling Applications Virtualized apps & network functions Drive OpEx reduction, dynamic scaling and multi-tenancy CapEx gains 1 Cloud intelligence & control Cloud Orchestration & Automation Network Virtualization & Automation (SDN) Cloud orchestration & automation Automates cloud management to maximize flexibility, performance and efficiency of virtualized network functions 2 Open, distributed cloud infrastructure Customers Enterprise DC IP routing, & optical transport Network DC SDN Combines virtual and physical assets in the DC, MAN and WAN into one dynamic, easy-to-program and highly-efficient network fabric 3 Automated, scalable, multi-tenant compute + storage + networking 5

6 SDN ROLE: ABSTRACTION & POLICY-BASED PROVISIONING Today: complex, manual/push provisioning Rapid service definition using simplified business language + Dynamically-triggered auto-provisioning OSS / Apps / NFV Network Element CPE Premium VPN is: Optical encryption 10G bandwidth xxx latency xxx VPN Policy list APIs Policy driven provisioning Network Element Resource discovery & control Network controller CPE1 Map CPE1 on VPN1 to Premium VPN and ensure 10ms latency I m online. Start my service. Accelerate service innovation and delivery. Control user experience. 6

7 SDN ROLE: MULTI-LAYER RESOURCE DISCOVERY & CONTROL Network abstractions View A OSS APIs Network optimizing application Discovers all network resources Provides multiple simplified views of network to IT/OSS layer View B View C Real-time network discovery Real-time network control Service turn-up with full knowledge of network state - Guarantee user experience APIs - Ensure best use of multi-layer network assets Real-time network optimization - Leverage correlated IP & optical data Service layer IP/MPLS Packet/Optical Enable shift from a static/fixed to dynamic/on-demand network operations model 7 COPYRIGHT 2012 ALCATEL-LUCENT. ALL RIGHTS RESERVED.

8 SDN REQUIREMENTS AT THE OPTICAL LAYER WSS-based wavelength routing with tuneable optics Colorless (tunable) optical transponders Multi-degree, directionless configurations Flexigrid Adaptive Rate Modulation OTN Switching L2 Packet-Optical Integration Agile, software-defined networks require an agile optical layer

9 FULL-FEATURED SDN CONTROLLERS A DETAILED LOOK OSS / Portal Service Manager Multi-Layer PCE Provisioning Manager Network optimizing Applications REST APIs Resource Manager Topology Manager ALTO Network controller (Multi-vendor mediation plug-in framework) Service manager - Presents simplified views of network topology and services to IT layer Multi-layer PCE - Creates IP and optical paths through network Resource manager - Dynamically binds services to IP/ optical transport based on real-time state of network ALTO - Returns best path/resource selection based on specified constraints BGP FlowSpec, OpenFlow, PCEP, Nefconf/YANG, Vendor EMS 9

10 SDN REVOLUTION IN DC, SDN EVOLUTION IN MAN/WAN Traditional NMS & OSS SDN 10s of thousands Data center Dynamic connection request with user-specified constraints Network operations per day Network/service deployment Network Services Rapid service instantiation Best path & resource selection Dynamic bandwidth (re-)allocation IP Routing & Optical Transport 1 Major topology & TE changes Month(s) Real-time optimization Time window for operation Optimized resiliency Second(s) 10

11 TRANSPORT SDN DEPLOYMENT MODELS OF ReST, OF, Netconf, PCEP OF OF OF PCEP, OF OXC OXC GMPLS GMPLS co-existence for restoration SDN for new virtualized services, deployed technology for existing services SNMP (existing network assets) and OpenFlow (new white boxes ) support 11 COPYRIGHT 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT CONFIDENTIAL SOLELY FOR AUTHORIZED PERSONS HAVING A NEED TO KNOW PROPRIETARY USE PURSUANT TO COMPANY INSTRUCTION

12 USE CASE: CLOUD-OPTIMIZED BUSINESS SERVICES 2 Rapid, zero-touch up-sell of IT services and advanced network services to enterprise customers 1 Dynamically extend enterprise virtual private cloud to service provider data center DC SDN Controller Self-service portal Rules & policies 1 WAN SDN controller Policy driven provisioning Resource discovery & control Network controller Enterprise virtual private cloud SP or partner datacenter(s) 2 Hypervisor NFV Hypervisor XaaS Gateway / router IP/optical network service 12

13 USE CASE: DYNAMIC MULTI-LAYER PATH CREATION & SELECTION Option 1: High bandwidth IP path Forward or primary path Dynamic SLA fulfillment Dynamic service resilience Option 2: Low-latency optical path Return or backup path Optimized resource utilization (CAC+) 15Gb/s required 5Gb/s path Real-time traffic engineering changes Current router path is saturated X 10Gb/s path Optical network dynamically reconfigured to provide optical path 13

14 USE CASE: NETWORK AS A SERVICE Network slices Wholesale slice IBM cloud IBM customer HP cloud SP customers Cloud partners & their customers Policy driven provisioning SDN controller Resource discovery & control Global network view Retail slice Residential Business Enterprise virtual private cloud SP business units Network controller Mobile SP network operations Infrastructure slice Aggregation Self-service portals & apps for each slice Backhaul Multi-layer network assets 14

15 USE CASE: DYNAMIC INTER-DC CONNECTIVITY MANAGEMENT Night Day DC #1 DC #1 DC #2 DC #3 21 Gbs 13 Gbs DC #2 21 Gbs 10 Gbs DC DC #1 #3 DC 13 #2 Gbs DC 10 #3 Gbs DC #1 26 Gbs 8 Gbs DC #2 26 Gbs 10 Gbs DC #3 8 Gbs 10 Gbs Enterprise Data Center #1 Enterprise Data Center #2 Policy driven provisioning 2 1 Resource discovery & control Network controller SP optical network dynamically reconfigured Enterprise requests traffic adaptation Optical switch Service Provider Enterprise Data Center #3 Optimal use of connectivity services by enterprise customers - Customer or SP managed service - Bandwidth matched to workload at wavelength (wholesale) or packet/otn (enterprise) layers - Multiple triggers (Application-driven, bandwidth threshold, time of day) Uses - BoD, bandwidth calendaring, disaster recovery, database synchronization - Financial, logistics, utilities - Private and virtual private clouds 15

16 KEY TAKEAWAYS The SDN promise: What s required: Delivery framework: Cloud-optimized IP Routing and Transport Rapid provisioning; rapid innovation; pay-as-you-go; greater network efficiency Policy-based provisioning; multi-layer resource visibility & control 16

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