Achim Autenrieth, ADVA Optical Networking FIA - FUTURE INTERNET ASSEMBLY Athens, 20/03/2014 The impact of advanced optical technologies on Transport SDN

© 2014 ADVA Optical Networking. All rights reserved. 22 Project Facts Start Date: 1/6/2013 Duration: 36M EU Funding: 1.49 M€ JP Funding: 2.82 M€ EU CONSORTIUM CTTC (ES) ADVA Optical Networking (DE), Telefónica I+D (ES) University of Bristol (UK) Fraunhofer – HHI (DE) JP CONSORTIUM Osaka University KDDI R&D Laboratories Inc. Fujitsu Ltd. Contact: Raul Muñoz, CTTC Ken-ichi Kitayama, Osaka University Scalable and efficient orchestration of Ethernet services using software- defined and flexible optical networks Industrial Partners Research Centers Universities

© 2014 ADVA Optical Networking. All rights reserved. 33 Design, Integration and Development of Service and network orchestration layer interworking and coordination of heterogeneous control plane and transport technologies to offer end-to-end Ethernet transport services. Optical Packet Switching (OPS) nodes for aggregation networks Flex-grid DWDM Optical Circuit Switching (OCS) for metro and long haul transport Virtualization layer for dynamic and on-demand partitioning of the optical infrastructure, offering virtual optical Ethernet transport networks (slices) Legacy (e.g. GMPLS) and new (e.g. OpenFlow based) control plane approaches for the control and management of virtual slices STRAUSS Project Objectives

© 2014 ADVA Optical Networking. All rights reserved. 44 NMS / CP / SDN Mission Key Facts Transport SDN for Flexible Optical Networks Datacenter Connectivity Cloud Bursting Secure multi- tenancy Global network visibility with “real-time” control De-couple virtual from physical network NFV support From cloud access to optical Terabit/s connectivity Use Cases and DriversEnablers DC Site 1 MAN / WAN DC Site N Enterprise Tenant B cloudTenant C cloudTenant A cloud Automate connectivity of multi-tier system patterns (Lower OpEx) Network Abstraction Virtualization Open & standardized interfaces Multi-tenancy capability Integration with existing OSS / NMS / CP SDN turns the network into a programmable resource

© 2014 ADVA Optical Networking. All rights reserved. 55 Advanced Optical Technologies Symbol rate (SR) is additional parameter: 400G leverages 100G (~30GBd) 1T needs 2..3x SR (~75GBd) 50GHz spaced channels Future higher- speed channels Maximum spectral efficiency super- channels Optical Power nm C Any Direction WSS λ1λ1 λ2λ2 λ3λ3 TX WSS Any Color Mission Colorless, Directionless ROADMs Flexible Grid Optical Layer SW-Defined Transceivers Optical Spectrum as a Service From fixed DWDM to software-defined optical networking.

© 2014 ADVA Optical Networking. All rights reserved. 66 Transport SDN – Early Attempts “If all you have is a hammer, everything looks like a nail.” Abraham Maslow, 1966 Transport SDN is much more than OpenFlow and protocol extensions.

© 2014 ADVA Optical Networking. All rights reserved. 77 “Legacy” Transport Network programmability HW abstraction and virtualization Centralized management & control Flow/circuit oriented data plane SDN vs. “Legacy” Optical Transport Separation of data and control plane Top-down approach: Facilitate optical layer virtualization & programmability.     SDN Principles

© 2014 ADVA Optical Networking. All rights reserved. 88 Optical Network Hypervisor WAN is exposed as virtual topology using OpenFlow or Restful API. SDN Controller #2 SDN Controller #1 Provider Controller SDN Controller #3 Optical Network Controller / HyperVisor FSP SW Suite SNMP, NETCONF OF, NETCONF, RESTful API OF, NETCONF, PCEP OF, PCEP, NETCONF GMPLS-AL, BGP-LS SNMP, MTOSI OpenFlow PCEP GMPLS-AL BGP-LS NETCONF/YANG REST Abstraction Physical ressources Derived topology GMPLS TED LSPDB

© 2014 ADVA Optical Networking. All rights reserved. 99 STRAUSS SDN Orchestration Testbed SDN Network Orchestration ABNO Controller PCE GMPLS-enabled Flexi-grid DWDM domain Active Stateful PCE TED LSPDB TED Topology Server VNTM Topology Server OPS Flow Server Provisioning Manager TREMA Controller REST API OpenFlow OpenFlow- enabled OPS/Flexi-grid DWDM domain NOX Controller REST API OpenFlow OpenFlow- enabled OPS DWDM domain OpenFlow Controller REST API Network Hypervisor OpenFlow + GMPLS enabled DWDM domain OCS OPS OCS TED LSPDB

© 2014 ADVA Optical Networking. All rights reserved. 10 Optical Transport Network Evolution with Software Defined Networking Network & Service Mgmt & Apps Control Plane SDN Existing NM & CP software portfolio will be extended and complemented with new SDN-based software modules Abstraction & Virtualization End-to-End Service Orchestration Network Programmability   

Achim Autenrieth Thank You IMPORTANT NOTICE The content of this presentation is strictly confidential. ADVA Optical Networking is the exclusive owner or licensee of the content, material, and information in this presentation. Any reproduction, publication or reprint, in whole or in part, is strictly prohibited. The information in this presentation may not be accurate, complete or up to date, and is provided without warranties or representations of any kind, either express or implied. ADVA Optical Networking shall not be responsible for and disclaims any liability for any loss or damages, including without limitation, direct, indirect, incidental, consequential and special damages, alleged to have been caused by or in connection with using and/or relying on the information contained in this presentation. Copyright © for the entire content of this presentation: ADVA Optical Networking.

© 2014 ADVA Optical Networking. All rights reserved. 12 Orchestration ~ automated configuration / coordination / management of complex systems, devices or systems, can present or deploy autonomic control and elements of control theory. A higher level system is required for “end to end composition” or virtual networks Abstraction of hardware and virtualization enables homogeneous service activation processes Coordinate the deployment of services controlled by either GMPLS or OpenFlow End to End Service Orchestration with GMPLS as internal signaling protocol DC Eth. Aggr. OpenFlow- controlled Ethernet Aggregation WAN GMPLS-controlled virtual (o real) WSON/SSON GMPLS Cloud Computing Orchestration OVS OpenFlow- controlled Ethernet/L2 Switches Controller OpenFlow OVS Broker PCE Controller OpenFlow

© 2014 ADVA Optical Networking. All rights reserved. 13 What is (Transport-)SDN? How does SDN apply to Optical Transport Networks? Open Networking Foundation white paper In the SDN architecture, the control and data planes are decoupled, network intelligence and state are logically centralized, and the underlying network infrastructure is abstracted from the applications. SDN is an architectural framework for creating intelligent networks that are programmable, application aware, and more open. SDN allows the network to transform into a more effective business enabler. SDN enables applications to request and manipulate services provided by the network and allows the network to expose network state back to the applications. A key aspect to the architectural framework is the separation of forwarding from control plane, and establishment of standard protocols and abstractions SDN is an architectural framework for creating intelligent networks that are programmable, application aware, and more open. SDN allows the network to transform into a more effective business enabler. SDN enables applications to request and manipulate services provided by the network and allows the network to expose network state back to the applications. A key aspect to the architectural framework is the separation of forwarding from control plane, and establishment of standard protocols and abstractions AT&T Domain 2.0 Vision white paper

© 2014 ADVA Optical Networking. All rights reserved. 14 GMPLS *is* SDN (or a functional component of SDN) Control and Data plane separation was a basic design principle together with Centralized Control & Hardware Abstraction: see ASON - RFC4397/4652 Transport node is a logical network device (…) originating and/or terminating of a data flow and/or switching (…). Controller is a logical entity that models all control plane intelligence (routing, traffic engineering (TE), and signaling protocols, path computation, etc.). A single controller can manage one or more transport nodes. SDN/GMPLS for Optical Networks How to leverage existing GMPLS control plane for SDN?

© 2014 ADVA Optical Networking. All rights reserved. 15 Tenant #1 Overall Network Architecture Enterprise Optical Access Ethernet Access Metro WDM IP/MPLS Core Customer IP Edge Core WDM Data Center #1 Data Center #2 Virtual Resources Network virtualization and hardware abstraction Recursive abstraction, combination and partitioning of resources Isolation, aggregation and composition of multi-tenant virtual networks Programmability and orchestra- tion of end-to-end services Virtualization enables the creation of logically isolated network partitions over abstracted physical networks and share them in a flexible and dynamic way. Virtual network #1 Virtual storage Virtual server Orchestration of IT & network resources Tenant #2 Virtual network #2 Virtual storage Virtual server Key aspects

© 2014 ADVA Optical Networking. All rights reserved. 16 Flexible Optical Circuit Switched (OCS) Transport Networks Optical transport networks provides dynamic, high bandwidth, programmable services for Ethernet Transport Packet Routers OTN / Ethernet Switches UNI/NNI NMS Optical Domain WSS ROADM GMPLS Control Plane

© 2014 ADVA Optical Networking. All rights reserved. 17 Main Use Case: Datacenter Connectivity Virtual IT resources SDN Network Orchestrator Data Center Operator Data Center 1 Core OPS Switches Flexi-grid OCS DWDM network ToR Ethernet Switches Aggregation OPS Switches Data Center 2 Core OPS Switches ToR Ethernet Switches Aggregation OPS Switches GMPLS Controller OpenFlow Controller Active Stateful PCE TED LSPDB OpenFlow Controller GMPLS Controller GMPLS Controller Flexible Optical Circuit Switched (OCS) Transport Networks

© 2014 ADVA Optical Networking. All rights reserved. 18 Direct Optical Transport SDN Direct vs. Indirect Model SDN Controller (Abstract Model) SDN Controller (Direct Model) Abstract (Overlay) Network Hypervisor Finding the appropriate level of abstraction is key to virtualization Direct model with open, standardized API and data models yields potential benefits at cost of complexity and latency Suited for multi-vendor management integration Current protocols not mature enough – Standardization required (ONF OTWG) Abstract model allows abstraction from analog complexity; Well suited for Virtualization and Orchestration Network Hypervisor key element to provide network abstraction, virtualization, and multi-tenancy

© 2014 ADVA Optical Networking. All rights reserved. 19 Abstract Model – Topology Virtualization Options Abstract Link “You can reach this destination across this domain with these characteristics” Paths in the optical domain become links in the virtual topology Allows vendor independent constraint modelling Virtual Node Hierarchical abstraction Presents subnetwork as a virtual switch Simple model, but can be deceptive No easy way to advertise “limited cross- connect capabilities” Virtual Node aggregation hides internal connectivity issues and physical constraints Abstract Link aggregation needs compromises and frequent updates See also: Aihua Guo, "Network Virtualization", OFC 2014, Monday, M2B.5

© 2014 ADVA Optical Networking. All rights reserved. 20 Packet Switch != Optical Switch Packet Switch Optical -Switch Signal formatDigital electronicAnalog optical Signal structureEthernet framesSignal dependent Payload visibilityYesNo Topology discoveryIn-band (e.g. LLDP)Out-of band (e.g. OSC) Fabric connectivityAny-to-anyConstrained Path feasibilityImplicitDep. on signal quality Path set-upAny orderSequential Target: Optical layer connectivity without having to deal with optical complexity.

© 2014 ADVA Optical Networking. All rights reserved. 21 Optical Node Configuration Network Line Port 2 1xN WSS XPDR EXTERNAL Tunable transponders Network Line Port 1 Network Line Port 3 Colorless Module(s) Directionless Module Directional ROADM Fixed Filter XPDR PROT External Wavelength Transponder Protection Fixed – Tunable Regeneration Tunable – Tunable Regeneration Fixed transponders Connectivity & Topology Discovery Signal Mapping & Format Compatibility Connectivity & Topology Discovery Signal Mapping & Format Compatibility Optical Performance Constraints Sequential Lightpath Setup/Teardown Optical Power Balancing Optical Performance Constraints Sequential Lightpath Setup/Teardown Optical Power Balancing OSC (Out-of-band) a) 40km b) 60km c) 20km a) b) c) d)

© 2014 ADVA Optical Networking. All rights reserved. 22 How Transport Fits in SDN Model Network Hypervisor Hypervisor Orchestration User Interfaces 3 rd Party Apps Open for innovation SDN Controller Optical Network Controller Management Fault & Alarms Configuration Accounting Performance Security Control Topology Disc Path Compute Provisioning Resource Mgr Policy Mgr Database Flow DB Topology DB Resource DB Policy DB Optical Network Hypervisor StorageComputeNetwork Optical Network Network Hypervisor virtualizes the optical network and presents an abstracted view to the SDN controller

© 2014 ADVA Optical Networking. All rights reserved. 23 Demonstration of SDN Use Cases ECOC 2013 Postdeadline Paper ECOC 2012 ECOC 2012 Postdeadline Paper OFC/NFOED 2013

Thank You IMPORTANT NOTICE The content of this presentation is strictly confidential. ADVA Optical Networking is the exclusive owner or licensee of the content, material, and information in this presentation. Any reproduction, publication or reprint, in whole or in part, is strictly prohibited. The information in this presentation may not be accurate, complete or up to date, and is provided without warranties or representations of any kind, either express or implied. ADVA Optical Networking shall not be responsible for and disclaims any liability for any loss or damages, including without limitation, direct, indirect, incidental, consequential and special damages, alleged to have been caused by or in connection with using and/or relying on the information contained in this presentation. Copyright © for the entire content of this presentation: ADVA Optical Networking.