PPT-CQRD: A Switch-based Approach to Flow

Interference in Data Center Networks Guo Chen Dan Pei Youjian Zhao Tsinghua University Beijing China The Problem Flow interference dramatically increases the flow completion time. Chen Xu. Yu Sang . Xuguang. Yang. Cuiyuan. Wang. Motivation. Virtual switch. Need some pre-work (download . M. ininet. or . openvswitch. ). Physical switch . Devices cost is high (switches, hosts). N. etwork?. [. ndb. ]. Nikhil Handigol, Brandon Heller, . Vimalkumar. . Jeyakumar. ,. David . Mazières. , Nick . McKeown. Stanford University. 1. 2. Bug story: incomplete handover. A. B. Switch X. WiFi. Cloud Computing. Network Virtualization. Open . vSwitch. . Open . vSwitch. . Virtual Switch. Open . vSwitch. architecture. OpenFlow. Virtual Switch. SOFTWARE-BASED VIRTAUL SWITCH . HARDWARE-BASED VIRTAUL SWITCH. . and all that. Presented by:. Yaakov (J) Stein. CTO. Outline. * Introduction. * . SDN . * . NFV . * Hype and doubts. * . OpenFlow. * . Alternatives. Introduction to NFV and SDN. Today’s communications world. Thomas Edwards. FOX Network Engineering & Operations. SDN Rules/Actions/Stats. The problem. SDN flow rule updates: . 1ms to 10ms. RP 168 switch point accuracy . ~10µs. We’ve got a problem. !. The Solution. Masoud Moshref. , . Apoorv. . Bhargava. , . Adhip. Gupta, Minlan Yu, Ramesh Govindan. (HotSDN’14). Motivation. 2. Current practice . Proactive needs a priori knowledge. Reactive . has . high . delay. 1. Minlan Yu. Princeton University. Joint work with. Mike . Freedman,. . Jennifer . Rexford and . Jia. Wang. D. o . I. t . F. ast . AN. d. . E. asy. 2. What’s DIFANE?. Traditional enterprise. Hard to manage. OpenFlow. SDN basics and . OpenFlow. Review some related concepts. SDN overview. OpenFlow. Review of related concepts. What are Control plane and data plane?. Are they always together in a device historically?. 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 .... 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 .... Scalable Host-based SDN Techniques. [Taylor-INFOCOM16] Taylor, Curtis R., Douglas C. . MacFarland. , Doran R. . Smestad. , and Craig A. . Shue. . "Contextual, Flow-Based Access Control with Scalable Host-based SDN Techniques.", IEEE International Conference on Computer Communications (INFOCOM) 2016.. Endpoints. Primary: proportion of patients with HIV RNA ≥ 50 c/mL at W48 (ITT-E, snapshot) ; non-inferiority if upper margin of the two-sided 95% CI for the difference = 4%, 97.3% power . Secondary: proportion of patients with HIV RNA < 50 c/mL at W48 (ITT-E, snapshot) ; non-inferiority if lower margin of the two-sided 95% CI for the difference = - 8%. RBAA). What is Risk?. What are the different auditing approach?. What is Risk Based Approach?. What is the causes and benefits of . RBA. ?. What are the Methodology of . RBA. ?. What is Risk?. In simple terms, risk is the possibility of something... 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 ....