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Need to extend Virtualization to Optical Transport Domain Michael Roth - Vice President R&D EU-Japan Workshop, Brussels, April 18th 2013 Outline • Introduction – ONE EU Project • Optical Network Virtualization • Prospects, Challenges & Solutions • Summary 2 © 2013 ADVA Optical Networking. All rights reserved. Confidential. Challenges in Multivendor setup Cisco IPNMS/OSS Multi-layer interoperability problem ALU IP-NMS/OSS Multi-vendor interoperability problem Ciena TNMS/OSS 3 JUNIPER IPNMS/OSS ADVA TNMS/OSS © 2013 ADVA Optical Networking. All rights reserved. Confidential. ALU T-NMS/OSS ONE Project 4 © 2013 ADVA Optical Networking. All rights reserved. Confidential. Software-Defined Networks (SDN) SDO + SDN = Software-Defined Optical Networks (SDON). 5 © 2013 ADVA Optical Networking. All rights reserved. Confidential. Software Defined Networking • Software-defined networking (SDN) is a current trend for future Network development of any kind • Key objective: Virtualize the network and converge the orchestration of the virtualized networks with VMs in the data centers to create a true network-supported "Cloud" • Key component: Open interface between a (centralized) control and the forwarding plane for SDN. • One possible solution: OpenFlow (defined by ONF) • Focused on packet networks – emerging to Transport • Assumed/hoped/dreamed key benefits: • • • • • • 6 Simplicity Vendor independency Reduced costs (CAPEX & OPEX) Complete Network overview Simplified Operation … © 2013 ADVA Optical Networking. All rights reserved. Confidential. Optical OpenFlow Cooperation with First ROADMbased OpenFlow Networking Testbed GMPLS functions can augment OpenFlow to mask optical layer complexity. 7 © 2013 ADVA Optical Networking. All rights reserved. Confidential. Virtualization 8 © 2013 ADVA Optical Networking. All rights reserved. Confidential. Cloud Data Centers Orchestration of IT & network resources Virtual storage Virtual server Virtual network Storage pool Fabric interconnect Server pool Virtualization is a key concept to pool servers, storage and appliances and share them in a flexible and dynamic way. 9 © 2013 ADVA Optical Networking. All rights reserved. Confidential. Network Virtualization - Definition Virtual Network 2 Virtual Network 1 Networks 1 & 2 Any form of partitioning or combining a set of network resources, and presenting it in an abstracted form to users such that each user, through his set of resources, has a unique, separate view of the network. [Wang et al., JLT, 12/2012] User: Data center tenants, virtual machines, workloads or applications. Resources: Fundamental (nodes, links) or derived (topologies), can be virtualized recursively. Requirements: User isolation, configuration independence, elasticity and programmability. 10 © 2013 ADVA Optical Networking. All rights reserved. Confidential. Use Cases Bandwidth calendaring Cloud bursting Cloud DC Private Datacenters Workload balancing Secure multi-tenancy Tenant 1 Load Load Tenant 2 Transactional nature of DC-to-DC traffic (bulk data transfers) offers opportunities for optical bandwidth-on-demand. 11 © 2013 ADVA Optical Networking. All rights reserved. Confidential. Optical Virtualization Challenges Packet Switch Optical l-Switch Signal format Digital electronic Analog optical Signal structure Ethernet frames Signal dependent Payload visibility Yes No Topology discovery In-band (e.g. LLDP) Out-of band (e.g. OSC) Fabric connectivity Any-to-any Constrained Implicit Dep. on signal quality Any order Sequential Path feasibility Path set-up Analog nature and switching constraints make optical networks difficult to virtualize. 12 © 2013 ADVA Optical Networking. All rights reserved. Confidential. Optical Virtualization – Two Extremes • • Virtualization on fundamental level • All nodes and links are exposed • Direct hardware representation • Highest flexibility for tenants/applications • Users need to control/understand optical layer Virtualization on highest derived level • Network abstracted as one large switch • Can be l-, circuit or packet switch • Users see switch as black box • Internal structure & optical layer are hidden Compromise necessary: Hiding optical complexity while exposing topology. 13 © 2013 ADVA Optical Networking. All rights reserved. Confidential. Optical Virtualization – SDN Control with Extensions Network Hypervisor 14 Policy Manager Database Resource Mgr Provisioning Path Compute Topology Disc Control Security Performance Accounting Configuration Fault & alarms Management Flow DB Resource DB Topology DB Policy DB Network Controller © 2013 ADVA Optical Networking. All rights reserved. Confidential. Abstraction Restful API Derived topology vNetwork Controller Physical ressources vNetwork Controller The need for flexible optical networks STRAUSS EU-Japan Project • Fixed-grid DWDM transport networks, electrical packet switching and aggregation technologies are not efficient for data rates beyond 100 Gbps. • Elastic optical networks (EON) and optical packet switching (OPS) are key technologies for addressing these issues Data Center Data Center Servic eA Servic eB Servic eA Servic eC Elastic optical network BVT Ethernet Switch 15 Servic eB Servic eC BVT Ethernet OPS Switch OPS © 2013 ADVA Optical Networking. All rights reserved. Confidential. 15 STRAUSS overall architecture 16 © 2013 ADVA Optical Networking. All rights reserved. Confidential. 16 Research Activities Generalized architecture for dynamic infrastructure services OpenFlow in Europe – Linking Infrastructure and Applications Towards Automated Interactions between the Internet & CarrierGrade Management Ecosystem 17 © 2013 ADVA Optical Networking. All rights reserved. Confidential. Summary • Optical network virtualization offers cloud providers & tenants high-bandwidth, low-latency connectivity on demand. • Different models for optical network virtualization exist. • A compromise between hiding the optical complexity and exposing the optical topology is required. • Open approaches based on standardized GMPLS or emerging OpenFlow technologies are possible. 18 © 2013 ADVA Optical Networking. All rights reserved. Confidential. Thank you [email protected] 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.