PPT-SDN Controller Challenges

The Story T hus Far SDN centralize the networks control plane The controller is effectively the brain of the network Controller determines what to do and tell switches how to do it The Story Thus Far. CSG. Winter 2015 – 01/14/15 – First Session. Part 1 - Planning. Definitions. Infrastructure Considerations. Use Cases. Service Delivery / Management . Considerations. User Engagement. Part 2 – Rollout Strategies: Benefits & Gotchas. Last Class . Measuring with SDN. What are measurement tasks?. What are sketches? What is the minimal building blocks for implementing arbitrary sketches?. How do we trade-off between accuracy and space?. Here. . Tom Williams, . twilliam@hp.com. SDN / DC Strategy & Execution. HP Networking. Mobility is changing everything . © Copyright 2013 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.. Colin Dixon. Technical Steering Committee Chair, . OpenDaylight. Principal . Engineer, . Brocade. Some content from: David Meyer, . Neela. . Jaques. , . Kevin Woods, and others. Outline. What I know a lot about. Deployment challenges. Device heterogeneity . I. nteroperation . with legacy . systems. Controller and apps scalability. Infrastructure research challenges. NOS issue: network abstraction. To make SDN accessible to a typical user. Fundamental issue: the speed gap between data plane and control plane.. Switch OS. Switch HW. 10-100 . Gbps. Switch OS. Switch HW. 10-100 0Mbps. Switch OS. Switch HW. ???. SDN controller. SDN controller scalability issue. Network elements has two components: . OpenFlow. client, forwarding hardware with flow tables.. The SDN controller must implement the network OS functionality. Provide abstraction to the upper layer. OpenFlow. and . ForCES. . IETF-93. Presented by. Yaakov Stein . RAD (. yaakov_s@rad.com. ). Evangelos Haleplidis . U of . Patras. (. ehalep@ece.upatras.gr. ). Why SDN and NFV ?. Before explaining . NFV. . What’s it all about ?. Presented by:. Yaakov (J) Stein. CTO. Today’s communications world. Today’s infrastructures are composed of many different Network Elements (NEs). sensors, . smartphones. The Story . T. hus Far. SDN --- centralize the network’s control plane. The controller is effectively the brain of the network. Controller determines what to do and tell switches how to do it.. The Story Thus Far. overview. Presented by:. Yaakov (J) Stein. Yaakov_S@rad.com. Why SDN and NFV ?. Before explaining . what. SDN and NFV are. . we need to explain . why. SDN and NFV are. Its all started with two related trends .... Presented by:. Yaakov (J) Stein. CTO. Today’s communications world. Today’s infrastructures are composed of many different Network Elements (NEs). sensors, . smartphones. , notebooks, laptops, desk computers, servers, . overview. Presented by:. Yaakov (J) Stein. Yaakov_S@rad.com. Why SDN and NFV ?. Before explaining . what. SDN and NFV are. . we need to explain . why. SDN and NFV are. Its all started with two related trends .... Slide 17? redraw so messages on links?. Probably can be fleshed out some more. Hard to find non-marketing materials. Slide 12: Omnigraffle was misbehaving. Had to do a screenshot and paste it in. Retry with newest version of graffle.