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Toward Transitional SDN Deployment in Enterprise Networks

Toward Transitional SDN Deployment in Enterprise Networks. Marco Canini. with Dan Levin, Stefan Schmid , Anja Feldmann. TU Berlin / Telekom Innovation Labs. Motivation. I. ♥. SDN. GOAL: Help SDN succeed!. The SDN Deployment Problem. Full SDN. UPGRADE.

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Toward Transitional SDN Deployment in Enterprise Networks

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  1. Toward Transitional SDN Deployment in Enterprise Networks Marco Canini withDan Levin, Stefan Schmid, AnjaFeldmann TU Berlin / Telekom Innovation Labs

  2. Motivation I ♥ SDN GOAL: Help SDN succeed!

  3. The SDN Deployment Problem Full SDN UPGRADE Must upgrade to SDN incrementally A real large-scale campus network

  4. Key Questions • How can we incrementally deploy SDNinto enterprise campus networks? • Can we reap the benefits of SDNwith partial deployment?

  5. Current Transitional Networks ? LegacyMgmt SDNPlatform Dual-stack approach

  6. Current Transitional Networks ? App1 App2 App3 LegacyMgmt SDNPlatform SDN Platform LegacyMgmt Dual-stack approach Edge-only approach

  7. Where the heck is the edge?

  8. PANOPTICON SDN ARCHITECTUREOperate the network as a (nearly) full SDN TOOLDetermine the partial SDN deployment

  9. The Existing Network

  10. 1. Planning the SDN Deployment B Network architect provides set ofingress ports to becontrolled via SDN C D A E F

  11. Network topology TOOL Optimizedpartial SDNdeployment Cost-awareoptimizer Trafficestimates Objectives Tunable parameters • Upgrade budget • Path delay • Port priorities • Price model • Utilization thresholds(link utilization, VLANs, etc.)

  12. The Partial SDN Deployment ( ) B C D A E F

  13. Benefits of Partial SDN Deployment? B C Harvest unutilizednetwork capacity D A E F

  14. Main benefits of SDN=Principled orchestration ofthe network policy B C D A E F

  15. ? Can partial SDN deploymentstill take advantage ofprincipled network orchestration

  16. 2. Realizing the Benefits of SDN Insight #1:≥ 1 SDN switch  Policy enforcement IDS B Middleboxtraversal C D A E F Access control

  17. 2. Realizing the Benefits of SDN Insight #1:≥ 1 SDN switch  Policy enforcement B C D A Trafficload-balancing E Insight #2:≥ 2 SDN switches  Fine-grained control F

  18. SDN Waypoint Enforcement Insight #1:≥ 1 SDN switch  Policy enforcement Insight #2:≥ 2 SDN switches  Fine-grained control Ensure that all traffic to/froman SDN-controlled port always traverses at least one SDN switch Legacy devices must direct traffic to SDN switches

  19. SDN Architecture The PANOPTICON Conceptually group SDN ports in Cell Blocks B C D A E F

  20. SDN Architecture The PANOPTICON Traffic restricted to Solitary Confinement Trees B C D A E Per-port spanning trees thatensure waypoint enforcement F

  21. PANOPTICON A E F B B C D “Logical SDN” C D A E F

  22. A E F B C D “Logical SDN” PANOPTICON provides the abstraction of a (nearly)fully-deployed SDN in a partially upgraded network PANOPTICON App1 App2 App3 SDN Platform

  23. Results Highlights • Evaluated a large campus network (1713 switches) • Upgrade 6% of distribution switches  • 100% SDN-controlled ingress ports • avg. path stretch < 50% • max. link util. < 70%

  24. Summary SDN ARCHITECTUREOperate the network asa (nearly) full SDN A E F B C D TOOLDetermine the partialSDN deployment PANOPTICON App1 App2 App3 SDN Platform

  25. The Collaborators Dan Levin Stefan Schmid AnjaFeldmann

  26. Thank you! Questions? A E F B C D PANOPTICON Come and see us! App1 App2 App3 SDN Platform

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