'Tcp performance' diaporamas de présentation

5. TRANSPORT LAYER

5. TRANSPORT LAYER. 2. Reminder: TCP Protocol. Slow Start Congestion Avoidance (Control) Fast Retransmit Fast Recovery. TCP: Slow Start. Used when initiating a connection or after a timeout Set cwnd to 1 segment At each ACK , increase cwnd by 1 segment (exponential increase)

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Wireless TCP KAIST CS644 Advanced Topics in Networking

Wireless TCP KAIST CS644 Advanced Topics in Networking. Jeonghoon Mo <jhmo@icu.ac.kr> School of Engineering Information and Communications University. Overview. TCP Basics Challenges in Wireless Networks High Bit Error Rate Variable Delays Mobility Interaction with other Layers.

609 views • 48 slides

Department of Information Engineering University of Pisa Network Telecomunication Research Group

A Survey on TCP Performance Evaluation and Modeling. Michele Pagano and Raffaello Secchi. Department of Information Engineering University of Pisa Network Telecomunication Research Group wwwtlc.iet.unipi.it. Outline. Fast overview on TCP congestion control mechanisms

559 views • 42 slides

Congestion Control

Congestion Control. Tanenbaum 5.3, 6.5. What? Why?. Congestion occurs when there is no reservation Demand exceeds Resources If congestion persists, resources must be increased If congestion happens in short bursts, buffers can avoid packet losses to some extent. Congestion Control, How?.

508 views • 33 slides

Presentation of Bluetooth Activities of Aalborg University at BLIP Systems

Presentation of Bluetooth Activities of Aalborg University at BLIP Systems. BLIP Meeting - Agenda. Agenda: Preliminary Results of TCP Performance over Bluetooth (Dennis Dungs, ca. 30 min) Location Information in Bluetooth (Joao Figueiras, ca. 30 min)

467 views • 32 slides

Qian Zhang Department of Computer Science HKUST

Advanced Topics in Next-Generation Wireless Networks. Transport Protocols in Ad hoc Networks. Qian Zhang Department of Computer Science HKUST. Transmission Control Protocol (TCP). Reliable ordered delivery Implements congestion avoidance and control

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Modelling TCP Reno with Spurious Timeouts in Wireless Mobile Environments

Modelling TCP Reno with Spurious Timeouts in Wireless Mobile Environments. Shaojian Fu School of Computer Science University of Oklahoma. Email: sfu@ou.edu. Introduction.

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Results on High Throughput and QoS Between the US and CERN

Results on High Throughput and QoS Between the US and CERN. California Institute of technology - Cern External Network Division Sylvain.ravot@cern.ch Datagrid WP7 - 24 January, 2002. Agenda. TCP performance over high latency/bandwidth network TCP behavior TCP limits TCP improvement

341 views • 25 slides

UNITN Research Unit Status of the Work

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Impact of Layer Two ARQ on TCP Performance in W-CDMA Networks

Impact of Layer Two ARQ on TCP Performance in W-CDMA Networks. Hiroshi Inamura, Osamu Takahashi, Hirotaka Nakano, Taro Ishikawa, NTT DoCoMo, Inc. Hiroshi Shigeno, Department of Information and Computer Science, Keio University Presented by Ming-Yen Lai. Outline. Introduction

338 views • 23 slides

Chapter 7

Chapter 7. TCP/IP Performance over Mobile Networks. Objectives. Explain the characteristics of mobile networks Understand specific issues concerning TCP performance degradation due to mobility Learn techniques to address TCP performance problems caused by mobility. Contents.

326 views • 20 slides

Chapter 8

Chapter 8. TCP/IP Performance over Optical Networks. Objectives. Gain an overview of optical networks Learn transport architectures for carrying TCP/IP traffic over optical networks Understand specific performance issues when TCP/IP traffic is transported over optical networks

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TCP over ad hoc networks

350 views • 19 slides

15-441 Computer Networking

304 views • 19 slides

Masaki Hirabaru masaki@nict.go.jp NICT Koganei

Performance Measurement on Large Bandwidth-Delay Product Networks. 3rd e-VLBI Workshop October 6, 2004 Makuhari, Japan. Masaki Hirabaru masaki@nict.go.jp NICT Koganei. An Example How much speed can we get?. a-1). High-Speed Backbone. GbE. 100M. GbE. L2/L3 SW. Receiver. Sender.

318 views • 19 slides

Masaki Hirabaru (NICT) and Jin Tanaka (KDDI) <masaki@nict.go.jp> <tanaka@kddnet.ad.jp>

Impact of Bottleneck Queue on Long Distant TCP Transfer. August 25, 2005 NOC-Network Engineering Session Advanced Network Conference in Taipei. Masaki Hirabaru (NICT) and Jin Tanaka (KDDI) <masaki@nict.go.jp> <tanaka@kddnet.ad.jp>. APAN Requirements on Transport.

314 views • 15 slides

ATCP:TCP Performance Over Mobile Ad Hoc Networks Researched by Suresh Singh of PSU

ATCP:TCP Performance Over Mobile Ad Hoc Networks Researched by Suresh Singh of PSU and Jian Liu of Sun Microsystems Presentation by Mir Hashimi CS 401B Mobile computing University of Missouri-Rolla Spring of 2002 1. Introduction: In this presentation, I will present a solution to the

271 views • 15 slides

Chapter 5

Chapter 5. TCP Modeling. Objectives. Appreciate mathematical modeling of TCP for performance optimization of TCP/IP networks Understand the fundamental relationship between packet loss probability and TCP performance Apply a range of mathematical models to predict TCP performance. Contents.

279 views • 14 slides

TCP performance

272 views • 13 slides

ECSE-6600: Internet Protocols Spring 2007, Exam 1 SOLUTIONS

ECSE-6600: Internet Protocols Spring 2007, Exam 1 SOLUTIONS. Time: 75 min (strictly enforced) Points: 50 YOUR NAME (1 pt): Be brief, but DO NOT omit necessary detail

234 views • 9 slides