PPT-Congestion Control

and Resource Allocation Lecture material taken from Computer Networks A Systems Approach Third EditionPeterson and Davie Morgan Kaufmann 2007 Advanced Computer Networks Congestion Control Outline. José Vicente Escamilla. José Flich. Pedro Javier García. 1. Introduction / Motivation. ICARO overview. ICARO description. Detection. Notification. Isolation. Results. Conclusions. Questions. Outline. IETF. . 88, Vancouver, BC. Lyle . Bertz. (. lyle.t.bertz@sprint.com. ). Brent Hirschman (. brent.hirschman@sprint.com. ). Supplement to . draft-bertz-dime-congestion-flow-attributes-01. RFC. 5777 Foundation. draft-stein-pwe3-congcons-01.. pdf. Yaakov (J) Stein. David Black. Bob Briscoe. PW congestion as seen by PWE3. PWE3 was originally in the transport area. . because handling the congestion issue was considered critical. Computer Networks. Principles of Congestion Control. Congestion:. informally: “too many sources sending too much data too fast for the . network. to handle”. different from flow control!. manifestations:. Control. . (part II). EE 122, Fall 2013. Sylvia Ratnasamy. http://inst.eecs.berkeley.edu/~ee122. /. Material thanks to Ion . Stoica. , Scott . Shenker. , Jennifer Rexford, Nick . McKeown. , and many other colleagues. Qi (Gill) Wang. gillwang@udel.edu. CISC 856 – . TCP/IP, Fall 2012. Special thanks to:. Dr. Paul . Amer. Guna. . Ranjan. , Justin . Yackoski. , . Namratha. . Hundigopal. and . Preethi. . Natarajan. HYPEREMIA AND CONGESTION:. There are 3 main basic requirements for normal circulatory function:-. Normal anatomic features. Normal physiologic controls, and. Normal biochemical composition of the blood.. Murari Sridharan. muraris@microsoft.com. CONEX BOF, IETF 76, Hiroshima. Its all about the apps . Apps have diverse needs. P2P, VoIP, TV, online apps, games. Filling the pipe while being TCP fair. High-speed congestion control, Autotuning the receive window, host OS (including app) bottlenecks. Global Routing via Integer Programming. Hamid . Shojaei. , . Azadeh. . Davoodi. , . and . Jeffrey . Linderoth. *. Department of Electrical and Computer Engineering . *Department of Industrial and Systems Engineering. udp. Congestion control. Congestion occurs when machines send too many packets to a network too quickly from the transport layer. . Performance will become degraded as packets are dropped and lost.. 14-740: Fundamentals of Computer Networks. Credit: . Bill . Nace. Congestion Control (2). Apply some control theory. Region 1: Low throughput. Region 2: High delay. Throughput increases slowly. Delay increases quickly. Algorithm Identification for Traffic Separation. Elie Kfoury. *. , Jorge Crichigno. *. (Presenter), Elias Bou-Harb. ^. *. College of Engineering and Computing, University of South Carolina. ^. Cyber Center For Security and Analytics, University of Texas at San Antonio, USA. Ashkan Paya . 1. Based on. An argument for increasing TCP’s initial congestion window. Nandita Dukkipati, Tiziana Refice, Yuchung Cheng, Jerry Chu, Tom Herbert, Amit Agarwal, Arvind Jain and Natalia Sutin. Google Inc.. Summary. . July 28, 2012. What can we do?. Absent changes to the network can we actually do something?. Yes. Is there work in the area of measurements that can we do to create “incentives” to make updates in the network happen?.