SDN and Photonics for Dynamic Cloud Connectivity


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Check out Achim Autenrieth's slide set from his OFC workshop entitled "SDN and Photonics for Dynamic Cloud Connectivity. This is all about SDN, Cloud Connectivity and the optical network Hypervisor.

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SDN and Photonics for Dynamic Cloud Connectivity

  1. 1. Achim Autenrieth, ADVA Optical Networking OIDA Software Defined Photonic and Data Center Networks Workshop 09 March 2014, Moscone Center, San Francisco, USA SDN and Photonics for Dynamic Cloud Connectivity
  2. 2. © 2014 ADVA Optical Networking. All rights reserved.22 Cloud Connectivity: What Is Hot? Cloud services drive demand for dynamic high-speed data center connectivity Network Virtualization Programmable WAN connectivity with open SDN implementation Business Continuity Low-latency connectivity for synchronous mirroring and disaster recovery solutions Mega Data Center Connectivity Cost-, space- and power-efficient high-capacity transport Cloud and traditional data center growth “Cloud data center traffic will grow 6-fold from 2011 to 2016 reaching ca. 5 ZB” Source: Global Cloud Index 2012, Cisco Data Center Connectivity
  3. 3. © 2014 ADVA Optical Networking. All rights reserved.33 NMS / CP / SDN Mission Key Facts SDN for Optical Data Center Connectivity • Cloud Bursting • Secure multi- tenancy • Dynamic optical connectivity • Global network visibility with “real-time” control • De-couple virtual from physical network From cloud access to optical Terabit/s connectivity Use Cases and Drivers Requirements DC Site 1 MAN / WAN DC Site NEnterprise Tenant B cloud Tenant C cloud SDN turns the network into a programmable resource Tenant A cloud • Network Abstraction • Virtualization • Open & standardized interfaces • Multi-tenancy capability • Integration with existing OSS / NMS / CP
  4. 4. © 2014 ADVA Optical Networking. All rights reserved.44 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.
  5. 5. © 2014 ADVA Optical Networking. All rights reserved.55 “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
  6. 6. © 2014 ADVA Optical Networking. All rights reserved.66 • 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 Key Business Driver End to End Service Orchestration 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 OVS Broker PCE Controller OpenFlow
  7. 7. © 2014 ADVA Optical Networking. All rights reserved.77 Direct Optical Transport and SDN Direct vs. Indirect Model • How to best extend SDN to transport layer? • Direct control yields potential benefits at cost of complexity and latency • Indirect control is easier to implement, and provides a migration path • Network Hypervisor key element to provide network abstraction, virtualization, and multi-tenancy in abstract model SDN Controller (Abstract Model)SDN Controller (Direct Model) Abstract (Overlay) Network Hypervisor Finding the appropriate level of abstraction is key to virtualization
  8. 8. © 2014 ADVA Optical Networking. All rights reserved.88 8 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 indepedent 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
  9. 9. © 2014 ADVA Optical Networking. All rights reserved.99 How Transport Fits in SDN Model Network Hypervisor Hypervisor Orchestration User Interfaces 3rd 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 Storage Compute Network Optical Network Network Hypervisor virtualizes the optical network and presents an abstracted view to the SDN controller
  10. 10. © 2014 ADVA Optical Networking. All rights reserved.1010 Optical Network Hypervisor WAN is exposed as virtual topology using OpenFlow or Restful API. SDN Controller #2 SDN Controller #1 SDN Controller #3 SDN Controller #4 Optical Network Controller / HyperVisor FSP SW Suite SNMP, NETCONF OF, NETCONF, RESTful API OF, NETCONF, PCEP OF, PCEP GMPLS-ENNI, BGP-LS SNMP, MTOSI OpenFlow PCEP GMPLS-ENNIBGP-LS NETCONF/YANG REST AbstractionPhysicalressourcesDerivedtopology
  11. 11. © 2014 ADVA Optical Networking. All rights reserved.1111 Network Operation 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 & Virtalization End-to-End Service Orchestration Network Programmability
  12. 12. 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.