Opening Up Your Network with SDN
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The document discusses software-defined networking (SDN), highlighting the decoupling of the network control plane from physical topology and its implications for organizations. It emphasizes the challenges of writing a custom control plane due to the complexity and required engineering resources, suggesting that most enterprises find in-house development unappealing. The benefits of SDN stem from its openness, enabling integration and customization of applications without the need for developing proprietary solutions.
Opening Up Your Network with SDN
- 3. Opening Up Your Network with SDN Guido Appenzeller Big Switch Networks
- 4. SDN/OPENFLOW ECOSYSTEM! Timeline 2007 2008 2009 2010 2011 2012 OpenFlow Switches Research Demos Prototypes Many more! 0.2 OpenFlow Standard 1.0 1.0 0.9 0.8.9 OF 1.1 OF 1.2 1.1 OF 1.X OF 2.0 1.2
- 5. So>ware defined Networking at a Crossroads Open? Closed? SDN
- 6. Why does this maDer?
- 7. Wikipedia DefiniFon: „A network architecture in which the network control plane is decoupled from the physical topology.” What is So>ware Defined Networking? What a network administrator hears: • (Yet) another vendor in your mission criFcal network • If this system (the SDN controller) goes down, so does the enFre network • You carry all the integraFon risk • Did I menFon this is brand new technology?
- 8. SDN allows you to write your own control plane Is this aDracFve for organizaFons deploying SDN? Are customers going to write their own? They won’t. It’s very difficult, requires a large engineering team with diverse skills. More “features” of SDN…
- 9. SDN allows you to write your own control plane Is this aDracFve for organizaFons deploying SDN? Are customers going to write their own? They won’t. It’s very difficult, requires a large engineering team with diverse skills. More “features” of SDN… Actually,…
- 10. SDN allows you to write your own control plane Is this aDracFve for organizaFons deploying SDN? Are customers going to write their own? In-‐house development unaDracFve for most Enterprises Sufficient economies of scale may exist for Hyperscale Data Centers and certain very specialized applicaFons More “features” of SDN…
- 11. SDN allows you to write your own control plane Is this aDracFve for organizaFons deploying SDN? Are customers going to write their own? In-‐house development unaDracFve for most Enterprises Sufficient economies of scale may exist for Hyperscale Data Centers and certain very specialized applicaFons If you buy a closed control plane from a single vendor, what have you gained? Easier for vendors to deliver certain applicaFons Example: Network VirtualizaFon. All modern implementaFons (that I am aware of) use a centralized conrtol plane. More “features” of SDN…
- 12. So why is SDN being adopted?
- 13. The thing that changes this value prop is SDN being open SDN is not about wriFng your own control plane. That's hard. Few will do it. Instead this is mostly about integraFon You don’t need to write your own Build your own (lightweight) apps on an exisFng control plane Modify exisFng Open Source Controller Mix and Match ApplicaFons Open SDN
- 14. Private Cloud vArmour vSwitch/ToR IntegraFon Three Examples
- 15. Source: team estimates based on interviews across 8 enterprise and university network professionals in planning, pilots or production with private cloud architectures ~3-‐6x increase in networking related trouble Fckets per month a>er moving to private cloud compuFng model The hidden headaches of moving to a private cloud Networking and Server VirtualizaFon
- 16. 1 4 Separate administraFon has liDle benefit Example 1: Private Cloud Cloud OrchestraFon Switch Switch Switch Switch Controller Network VirtualizaFon
- 17. Open API enables automaFon Example 1: Private Cloud Cloud OrchestraFon Switch Switch Switch Switch Controller Network VirtualizaFon API
- 18. Open API enables automaFon Example 1: Private Cloud Cloud OrchestraFon Switch Switch Switch Switch Controller Network VirtualizaFon API Sample API Calls: Create Virtual Network New Host Location Notification if Unknown Host
- 19. Firewall for East/West Traffic Example 2: vArmour ToR Switch vSwitch vSwitch vSwitch VM" VM" VM-1" VM" VM-2" VM" ToR Switch vSwitch vSwitch vSwitch Firewall" VM" VM" VM" VM" VM" Physical Server ToR Switch vSwitch VM" VM" AggregaFon Switch AggregaFon Switch AggregaFon Switch Physical Server
- 20. Service InserFon: How can I deploy a firewall? Example 2: vArmour" ToR Switch vSwitch vSwitch vSwitch VM" VM" VM-1" VM" VM-2" VM" ToR Switch vSwitch vSwitch vSwitch Firewall" VM" VM" VM" VM" VM" Physical Server ToR Switch vSwitch VM" VM" AggregaFon Switch AggregaFon Switch AggregaFon Switch Physical Server ???
- 21. Floodlight Open Source Controller Example 2: vArmour Switch Switch Switch Switch Switch Floodlight Forwarding Device Manager Topology
- 22. Open Source provided easy integraFon and maximum flexibility Example 2: vArmour Switch Switch Switch Switch Switch Floodlight Forwarding Device Manager Topology vArmour
- 23. Open Source allowed easy IntegraFon Example 2: vArmour Switch Switch Switch Switch Switch Floodlight Forwarding Device Manager Topology vArmour Engineering Advantages Open Source allows full access to integraFon layer Core applicaFons can be augmented if needed Business Model Customers can mix and match applicaFons from different vendors Choice of Open Source vs. commercial controller No lock-‐in for vArmour
- 24. Traffic from a VM to a physical server Example 3: vSwitch/ToR IntegraFon ToR Switch vSwitch vSwitch vSwitch VM" VM" VM" VM" VM" VM" ToR Switch vSwitch vSwitch vSwitch VM" VM" VM" VM" VM" VM" Physical Server ToR Switch vSwitch VM" VM" AggregaFon Switch AggregaFon Switch AggregaFon Switch Physical Server
- 25. Different soluFons exist, all require thight Tor/vSwitch integraton Example 3: vSwitch/ToR IntegraFon ToR Switch vSwitch vSwitch vSwitch VM" VM" VM" VM" VM" VM" ToR Switch vSwitch vSwitch vSwitch VM" VM" VM" VM" VM" VM" Physical Server ToR Switch vSwitch VM" VM" AggregaFon Switch AggregaFon Switch AggregaFon Switch Physical Server
- 26. Customer pick best-‐of-‐breed vendors Example 3: vSwitch/ToR IntegraFon Physical Network Virtual Network
- 27. Open Protocols allow vSwitch/ToR integraFon Open Protocols vSwitch vSwitch vSwitch ApplicaFon A Switch Switch Switch ApplicaFon B Open Protocols Open Protocols Controller
- 28. With closed protocols it is not possible Closed Protocols vSwitch vSwitch vSwitch Controller A Switch Switch Switch Controller B Closed Protocol B Closed Protocol A Physical Network Virtual Network
- 29. 1) Open APIs 2) Open source 3) Open Protocols Open SDN Being Open is criFcal for SDN’s Success Switch Switch Switch Switch Switch Controller ApplicaFon ApplicaFon ApplicaFon ApplicaFon
- 30. See it live? Please visit the demos of our partners that showcase Open SDN by Big Switch Networks.
- 31. Thank you!