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Software Defined Network - SDN


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Presentation detailed about SDN (Software Defined Network) overview . It covers from basics like different controllers and touches upon some technical details.
Covers Terminologies used, OpenFlow, Controllers, Open Day light, Cisco ONE, Google B4, NFV,etc

Published in: Technology

Software Defined Network - SDN

  2. 2. Agenda • What? Why? • Architecture • SDN Controllers • Open Flow • Daylight Control • Cisco • Cisco ONE • Cisco onePK • Google B4 • Demo
  3. 3. What is SDN? The physical separation of the network control plane from the forwarding plane, and where a control plane controls several devices • Directly programmable • Agile: Abstracting control from forwarding • Centrally managed • Programmatically configured • Open standards-based vendor neutral
  4. 4. SDN Operation - Control/Data Plan • Control plan :Logic for controlling forwarding behavior. Examples: routing protocols, network middle box configuration • Data plane : Forward traffic according to control plane logic — Examples: IP forwarding, Layer 2 switching
  5. 5. Why? So Many Uses/Use cases 1. Virtualization: Use network resource without worrying about where it is physically located, how much it is, how it is organized, etc. 2. Orchestration: Should be able to control and manage thousands of devices with one command. 3. Programmable: Should be able to change behavior on the fly. 4. Dynamic Scaling: Should be able to change size, quantity 5. Automation: To lower OpEx minimize manual involvement  Troubleshooting  Reduce downtime  Policy enforcement  Provisioning/Re-provisioning/Segmentation of resources  Add new workloads, sites, devices, and resources.
  6. 6. Why? So Many Uses/Use cases 6. Visibility: Monitor resources, connectivity 7. Performance: Optimize network device utilization  Traffic engineering/Bandwidth management  Capacity optimization  Load balancing  High utilization  Fast failure handling 8. Multi-tenancy: Tenants need complete control over their addresses, topology, and routing, security 9. Service Integration: Load balancers, firewalls, Intrusion Detection Systems (IDS), provisioned on demand and placed appropriately on the traffic path
  7. 7. SDN Architecture
  8. 8. SDN Controllers Many Different SDN Controllers • NOX/POX • Ryu • Floodlight • OpenDaylight • Pyretic • Frenetic • Procera • RouteFlow • Trema ! NOX/POX ! Ryu ! Floodlight ! OpenDaylight ! Pyretic ! Frenetic ! Procera ! RouteFlow ! Trema 3
  9. 9. Open Flow OpenFlow Protocol Specification ! OpenFlow controller communicates with switch over a secure channel " OpenFlow protocol defines message format " Purpose of control channel: update flow table " Logic is executed at controller
  10. 10. Matching (OpenFlow v. 1.0) ! Packet header fields matched against one of N tables ! If no match, packet is sent to controller ! Otherwise, switch performs action 5
  11. 11. Open Day Light
  12. 12. Cisco ONE
  13. 13. Cisco onePK
  14. 14. Cisco Controller
  15. 15. Cisco Application Centric Infrastructure
  16. 16. Google B4 Architecture -Software-defined WAN • Logically centralized traffic-engineering controller, which allows applications to manipulate bandwidth across data centers through WAN networks. • Automation - separate monitoring, management and operation from individual boxes
  17. 17. Amazon VP Cloud Dynamic Scaling of Resources: Amazon Virtual Private Cloud ! Connect logically isolated VM instances to existing network ! Connection to existing infrastructure via VPN hDp:// cloudHvpc.html)
  19. 19. Network Function Virtualization
  20. 20. Cisco ONE
  21. 21. Network Programmability Models
  22. 22. Active Networks • Networks where switches perform custom computations on packets • ž Examples (and motivation) • —Trace program running at each router • —Middleboxes: firewalls, proxies, application services
  23. 23. Network Virtualization • What is Network Virtualization? • ž Representation of one or more logical network topologies on the same infrastructure. • ž Many different instantiations —Virtual LANs (VLANs) —Various technologies and network testbeds —Today: VMWare, Nicira, etc.