PPT-TCP flow control (Congestion Window Control)

Ashkan Paya 1 Based on An argument for increasing TCPs initial congestion window Nandita Dukkipati Tiziana Refice Yuchung Cheng Jerry Chu Tom Herbert Amit Agarwal Arvind Jain and Natalia Sutin Google Inc. Advanced Computer Networks: TCP Congestion Control. 1. Principles of Congestion Control. Congestion:. informally: “too many sources sending too much data too fast for the . network. to handle”. different from flow control!. and. Resource Allocation. Lecture material taken from. “Computer Networks . A Systems Approach. ”, Third . Edition,Peterson. and Davie,. Morgan Kaufmann, . 2007. .. Advanced Computer Networks. Congestion Control Outline. 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:. (Congestion Window Control). 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.. the . Internet. Sally Floyd . and . Kevin . Fall . IEEE-ACAM . Transactions on . Networking,1999. . . 101062804 . 馬儀蔓. . Outline. Introduction. The Problem of Unresponsive Flows. Celio. Albuquerque, Brett J. Vickers, Tatsuya . Suda. 1. Outline. The Problem. Existing Solutions. Network Border Patrol. Feedback Control Algorithm. Rate Control Algorithm. Simulations and Testing. Lavanya Jose. , Lisa Yan, Nick . McKeown. , . Sachin. . Katti. Stanford University . . Mohammad . Alizadeh. . MIT. George Varghese. Microsoft Research. The Congestion Control Problem. Link 1. 60 G. By. Bhavani manthena. What is Congestion?. Congestion . is a situation in Communication Networks in which too many packets are present in a part of the subnet, performance degrades. .. . Congestion in a network may occur when the load on the . Transport Layer II. Data over TCP. Based partly on lecture notes by David . Mazières. , Phil Levis, John . Jannotti. Rodrigo Fonseca. Last Class. Introduction to TCP. Header format. Connection state diagram. This is an extended module that covers TCP flow control, congestion control, and error control in TCP.. 2. . Flow Control. Congestion Control. Error Control . TCP:. 3. What is Flow/Congestion/Error Control ?. Jian He. UT Austin. 1. Why is Congestion Control necessary?. Data . Packets. ACK. Congested . Link. Congested link vs. reliability: . long queuing delay, packet loss. But, can delay or packet loss always . Tenth . Edition. by William Stallings. Data and Computer Communications, Tenth Edition by William Stallings, (c) Pearson Education . - . 2013. Congestion Control. Chapter 20. We were doing very well, up to the kind of sum when a bath is filling at the rate of so many gallons and two holes are letting the water out, and please to say how long it will take to fill the bath, when my mother put down the socks she was darning and clicked her tongue in impatience.. 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. Dr. Rocky K. C. . Chang October 25, 2010. 1. The network congestion problem. 2. Problem: How to effectively and fairly allocate network resources among a collection of competing users?. Congestion is the state of sustained network overload..