Introduction to Computer Networks
|
|
|
- Silas Gallagher
- 5 years ago
- Views:
Transcription
1 Introduction to Computer Networks Tian Song ( 嵩天 ), Ph.D., Assoc. Prof. songtian@bit.edu.cn
2 Introduction to Computer Networks P2P, CDN, DTN and Overlay Tian Song ( 嵩天 ), Ph.D., Assoc. Prof. songtian@bit.edu.cn
3 Outline P2P CDN DTN Overlay 3
4 Application Layer It is a really useful layer to the users! Users do really care about this layer! 4
5 P2P Question: to How to share large files efficiently? Answer: Decentralized, distributed network Upload while download 1999, Napster 5
6 Napster Napster history: the rise January 1999: Napster version 1.0 May 1999: company founded September 1999: first lawsuits 2000: 80 million users Napster history: the fall Mid 2001: out of business due to lawsuits Mid 2001: dozens of P2P alternatives that were harder to touch, though these have gradually been constrained 2003: growth of pay services like itunes Napster history: the resurrection 2003: Napster reconstituted as a pay service 2006: still lots of file sharing going on Shawn Fanning, Northeastern freshman 6
7 Napster Procedure: Nodes connected to a central server and gave it a listing of all the files they had Nodes searches the central server for files The actual file transfer occurs peer to peer Weakness: Directory server was a single point of failure 7
8 P2P Protocols: Gnutella, edonkey, BitTorrent, FastTrack,. Applications: file sharing streaming media financial: BitCoin 8
9 Gnutella Pure P2P: 9
10 BitTorrent: Overall Architecture Web Server Tracker C A [Seed] B [Leech] Downloader 10 School of Computer [Leech] Science and Technology, BIT,
11 BitTorrent: Overall Architecture Web Server Tracker C A [Seed] B [Leech] Downloader 11 School of Computer [Leech] Science and Technology, BIT,
12 BitTorrent: Overall Architecture Web Server Tracker C A [Seed] B [Leech] Downloader 12 School of Computer [Leech] Science and Technology, BIT,
13 BitTorrent: Overall Architecture Web Server Tracker C A [Seed] B [Leech] Downloader 13 School of Computer [Leech] Science and Technology, BIT,
14 BitTorrent: Overall Architecture Web Server Tracker C A [Seed] B [Leech] Downloader 14 School of Computer [Leech] Science and Technology, BIT,
15 BitTorrent: Overall Architecture Web Server Tracker C A [Seed] B [Leech] Downloader 15 School of Computer [Leech] Science and Technology, BIT,
16 BitTorrent: Overall Architecture Web Server Tracker C A [Seed] B [Leech] Downloader 16 School of Computer [Leech] Science and Technology, BIT,
17 BitTorrent chop file into many pieces works well in practice 17
18 CDN Question: Content Delivery Network How to share large amount of files efficiently? Answer: More servers? More storage? CDN 18
19 CDN Distribution Content Providers origin server in North America CDN distribution node Content Distributor CDN server in S. America CDN server in Europe CDN server in Asia 19
20 CDN Yahoo MSNBC CNN CBC Youku Content Provider Content Distributor Akamai Cisco, Oracle Sun H/W and S/W Vendor Hosting Provider Bell 20
21 How Akamai Works cnn.com (content provider) DNS root server GET index. html nn.com/af/cnn.com/foo.jpg HTTP Akamai Akamai global DNS server cluster Akamai regional DNS server End user Nearby Akamai cluster 21
22 How Akamai Works cnn.com (content provider) DNS root server DNS lookup cache.cnn.com Akamai global DNS server Akamai cluster 4 ALIAS: g.akamai.net Akamai regional DNS server End user Nearby Akamai cluster 22
23 How Akamai Works cnn.com (content provider) DNS root server DNS lookup g.akamai.net P Akamai global DNS server Akamai regional Akamai cluster ALIAS DNS server a73.g.akamai.net End user Nearby Akamai cluster 23
24 How Akamai Works cnn.com (content provider) DNS root server HTTP Akamai Akamai global DNS server cluster Akamai regional DNS server 8 End user Address Nearby Akamai cluster 24
25 How Akamai Works cnn.com (content provider) DNS root server HTTP Akamai Akamai global DNS server cluster Akamai regional DNS server 8 End user GET /foo.jpg Host: cache.cnn.com 9 Nearby Akamai cluster 25
26 How Akamai Works cnn.com (content provider) DNS root server GET foo.jpg HTTP Akamai Akamai global DNS server cluster Akamai regional DNS server 8 End user GET /foo.jpg Host: cache.cnn.com 9 Nearby Akamai cluster 26
27 DTN Delay Tolerant Network complicated environment 27
28 DTN 28
29 Overlay Network Layers and Overlay ( 覆盖层 ): 29
30 Conclusion P2P CDN DTN Overlay 30
31 End This page is intended blank. 31
CS 3516: Advanced Computer Networks
Welcome to CS 3516: Advanced Computer Networks Prof. Yanhua Li Time: 9:00am 9:50am M, T, R, and F Location: Fuller 320 Fall 2017 A-term 1 Some slides are originally from the course materials of the textbook
CS 3516: Computer Networks
Welcome to CS 3516: Computer Networks Prof. Yanhua Li Time: 9:00am 9:50am M, T, R, and F Location: AK219 Fall 2018 A-term 1 Some slides are originally from the course materials of the textbook Computer
Peer-to-Peer Applications Reading: 9.4
Peer-to-Peer Applications Reading: 9.4 Acknowledgments: Lecture slides are from Computer networks course thought by Jennifer Rexford at Princeton University. When slides are obtained from other sources,
CSE 486/586 Distributed Systems
CSE 486/586 Distributed Systems Content Distribution Networks Slides by Steve Ko Computer Sciences and Engineering University at Buffalo CSE 486/586 Understanding Your Workload Engineering principle Make
CSE 124: CONTENT-DISTRIBUTION NETWORKS. George Porter December 4, 2017
CSE 124: CONTENT-DISTRIBUTION NETWORKS George Porter December 4, 2017 ATTRIBUTION These slides are released under an Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0) Creative Commons
CONTENT-DISTRIBUTION NETWORKS
CONTENT-DISTRIBUTION NETWORKS George Porter June 1, 2018 ATTRIBUTION These slides are released under an Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0) Creative Commons license These
Server Selection Mechanism. Server Selection Policy. Content Distribution Network. Content Distribution Networks. Proactive content replication
Content Distribution Network Content Distribution Networks COS : Advanced Computer Systems Lecture Mike Freedman Proactive content replication Content provider (e.g., CNN) contracts with a CDN CDN replicates
416 Distributed Systems. March 23, 2018 CDNs
416 Distributed Systems March 23, 2018 CDNs Outline DNS Design (317) Content Distribution Networks 2 Typical Workload (Web Pages) Multiple (typically small) objects per page File sizes are heavy-tailed
Mul$media Networking. #9 CDN Solu$ons Semester Ganjil 2012 PTIIK Universitas Brawijaya
Mul$media Networking #9 CDN Solu$ons Semester Ganjil 2012 PTIIK Universitas Brawijaya Schedule of Class Mee$ng 1. Introduc$on 2. Applica$ons of MN 3. Requirements of MN 4. Coding and Compression 5. RTP
CS 43: Computer Networks BitTorrent & Content Distribution. Kevin Webb Swarthmore College September 28, 2017
CS 43: Computer Networks BitTorrent & Content Distribution Kevin Webb Swarthmore College September 28, 2017 Agenda BitTorrent Cooperative file transfers Briefly: Distributed Hash Tables Finding things
CS 43: Computer Networks. 14: DHTs and CDNs October 3, 2018
CS 43: Computer Networks 14: DHTs and CDNs October 3, 2018 If Alice wants to stream Mad Men over a highspeed Internet connection her browser may choose a video rate A. in the range of Mbps. B. in the range
HTTP and Web Content Delivery
HTTP and Web Content Delivery COS 461: Computer Networks Spring 2011 Mike Freedman hgp://www.cs.princeton.edu/courses/archive/spring11/cos461/ 2 Outline Layering HTTP HTTP conneclon management and caching
P2P Applications. Reti di Elaboratori Corso di Laurea in Informatica Università degli Studi di Roma La Sapienza Canale A-L Prof.ssa Chiara Petrioli
P2P Applications Reti di Elaboratori Corso di Laurea in Informatica Università degli Studi di Roma La Sapienza Canale A-L Prof.ssa Chiara Petrioli Server-based Network Peer-to-peer networks A type of network
Content Search. Unstructured P2P
Content Search Unstructured P2P Prof. Jukka K. Nurminen Data Communications Software (DCS) Lab, Department of Computer Science and Engineering, Aalto University *Partly adapted from original slides provided
Overview Computer Networking Lecture 16: Delivering Content: Peer to Peer and CDNs Peter Steenkiste
Overview 5-44 5-44 Computer Networking 5-64 Lecture 6: Delivering Content: Peer to Peer and CDNs Peter Steenkiste Web Consistent hashing Peer-to-peer Motivation Architectures Discussion CDN Video Fall
Content Distribution. Today. l Challenges of content delivery l Content distribution networks l CDN through an example
Content Distribution Today l Challenges of content delivery l Content distribution networks l CDN through an example Trends and application need " Some clear trends Growing number of and faster networks
Today s class. CSE 123b Communications Software. Telnet. Network File System (NFS) Quick descriptions of some other sample applications
CSE 123b Communications Software Spring 2004 Today s class Quick examples of other application protocols Mail, telnet, NFS Content Distribution Networks (CDN) Lecture 12: Content Distribution Networks
Content Search. Unstructured P2P. Jukka K. Nurminen
Content Search Unstructured P2P Jukka K. Nurminen *Partly adapted from original slides provided by Rüdiger Schollmeier and Jörg Eberspächer (Technische Universität München) 1 V1-Filename.ppt / yyyy-mm-dd
11/13/2018 CACHING, CONTENT-DISTRIBUTION NETWORKS, AND OVERLAY NETWORKS ATTRIBUTION
CACHING, CONTENT-DISTRIBUTION NETWORKS, AND OVERLAY NETWORKS George Porter November 1, 2018 ATTRIBUTION These slides are released under an Attribution-NonCommercial-ShareAlike.0 Unported (CC BY-NC-SA.0)
Files/News/Software Distribution on Demand. Replicated Internet Sites. Means of Content Distribution. Computer Networks 11/9/2009
Content Distribution Kai Shen Files/News/Software Distribution on Demand Content distribution: Popular web directory sites like Yahoo; Breaking news from CNN; Online software downloads from Linux kernel
CSE 123b Communications Software
CSE 123b Communications Software Spring 2002 Lecture 13: Content Distribution Networks (plus some other applications) Stefan Savage Some slides courtesy Srini Seshan Today s class Quick examples of other
How Akamai delivers your packets - the insight. Christian Kaufmann SwiNOG #21 11th Nov 2010
How Akamai delivers your packets - the insight Christian Kaufmann SwiNOG #21 11th Nov 2010 What is a Content Distribution Network? The RFCs and Internet Drafts define a Content Distribution Network, CDN,
Peer to Peer Systems and Probabilistic Protocols
Distributed Systems 600.437 Peer to Peer Systems & Probabilistic Protocols Department of Computer Science The Johns Hopkins University 1 Peer to Peer Systems and Probabilistic Protocols Lecture 11 Good
Content Distribu-on Networks (CDNs)
Second Half of the Course Content Distribu-on Networks (CDNs) Mike Freedman COS 461: Computer Networks h@p://www.cs.princeton.edu/courses/archive/spr14/cos461/ Applica-on case studies Content distribu-on,
Peer to Peer Networks
Sungkyunkwan University Peer to Peer Networks Prepared by T. Le-Duc and H. Choo Copyright 2000-2017 Networking Laboratory Presentation Outline 2.1 Introduction 2.2 Client-Server Paradigm 2.3 Peer-To-Peer
Introduction to Computer Networks
Introduction to Computer Networks Tian Song ( 嵩天 ), Ph.D., Assoc. Prof. songtian@bit.edu.cn Introduction to Computer Networks ICMP, ARP, DHCP, OSPF, BGP Tian Song ( 嵩天 ), Ph.D., Assoc. Prof. songtian@bit.edu.cn
Web, HTTP, Caching, CDNs
Web, HTTP, Caching, CDNs Outline Web HyperText Transfer Protocol (HTTP) Inefficiencies in HTTP HTTP Persistent Connections Caching CDNs Consistent Hashing CS 640 1 Web Original goal of the web: mechanism
Peer-to-Peer (P2P) Systems
Peer-to-Peer (P2P) Systems What Does Peer-to-Peer Mean? A generic name for systems in which peers communicate directly and not through a server Characteristics: decentralized self-organizing distributed
Peer-to-Peer Systems. Internet Computing Workshop Tom Chothia
Peer-to-Peer Systems Internet Computing Workshop Tom Chothia Plagiarism Reminder Plagiarism is a very serious offense. Never submit work by other people without clearly stating who wrote it. If you did
Extreme Computing. BitTorrent and incentive-based overlay networks.
Extreme Computing BitTorrent and incentive-based overlay networks BitTorrent Today we will focus on BitTorrent The technology really has three aspects A standard that BitTorrent client systems follow Some
Internet Services & Protocols
Department of Computer Science Institute for System Architecture, Chair for Computer Networks Internet Services & Protocols Content Distribution Dr.-Ing. Stephan Groß Room: INF 3099 E-Mail: stephan.gross@tu-dresden.de
EE 122: Peer-to-Peer Networks
EE 122: Peer-to-Peer Networks Ion Stoica (and Brighten Godfrey) TAs: Lucian Popa, David Zats and Ganesh Ananthanarayanan http://inst.eecs.berkeley.edu/~ee122/ (Materials with thanks to Vern Paxson, Jennifer
Page 1. How Did it Start?" Model" Main Challenge" CS162 Operating Systems and Systems Programming Lecture 24. Peer-to-Peer Networks"
How Did it Start?" CS162 Operating Systems and Systems Programming Lecture 24 Peer-to-Peer Networks" A killer application: Napster (1999) Free music over the Internet Key idea: share the storage and bandwidth
Peer-to-Peer Systems. Network Science: Introduction. P2P History: P2P History: 1999 today
Network Science: Peer-to-Peer Systems Ozalp Babaoglu Dipartimento di Informatica Scienza e Ingegneria Università di Bologna www.cs.unibo.it/babaoglu/ Introduction Peer-to-peer (PP) systems have become
Outline Applications. Central Server Hierarchical Peer-to-peer. 31-Jan-02 Ubiquitous Computing 1
Outline Applications Central Server Hierarchical Peer-to-peer 31-Jan-02 Ubiquitous Computing 1 Networked distributed system architectures Central Server based Web servers Hierarchical Services Domain Name
Peer to Peer Networks
Sungkyunkwan University Peer to Peer Networks Prepared by T. Le-Duc and H. Choo Copyright 2000-2018 Networking Laboratory P2P Applications Traditional P2P applications: for file sharing BitTorrent, Emule
Introduction to Peer-to-Peer Systems
Introduction Introduction to Peer-to-Peer Systems Peer-to-peer (PP) systems have become extremely popular and contribute to vast amounts of Internet traffic PP basic definition: A PP system is a distributed
CMSC 332 Computer Networks P2P and Sockets
CMSC 332 Computer Networks P2P and Sockets Professor Szajda Announcements Programming Assignment 1 is due Thursday Where are we? What sorts of problems are we having? 2 Recap SMTP is the language that
Internet Structural View. The Internet software layers. Package-shipping example TCP UDP
Internet Structural View WAN/Backbone WAN/Campus WAN/Corporate WAN/ISP 1 2 Package-shipping example The Internet software layers SMTP, Telnet, FTP, POP3, IMAP TCP, UDP IP: RIP, BGP, OSPF 3 Ethernet, Wireless,
Drafting Behind Akamai (Travelocity-Based Detouring)
(Travelocity-Based Detouring) Ao-Jan Su, David R. Choffnes, Aleksandar Kuzmanovic and Fabián E. Bustamante Department of EECS Northwestern University ACM SIGCOMM 2006 Drafting Detour 2 Motivation Growing
INTERNATIONAL JOURNAL OF PURE AND APPLIED RESEARCH IN ENGINEERING AND TECHNOLOGY
INTERNATIONAL JOURNAL OF PURE AND APPLIED RESEARCH IN ENGINEERING AND TECHNOLOGY A PATH FOR HORIZING YOUR INNOVATIVE WORK PEER-TO-PEER FILE SHARING WITH THE BITTORRENT PROTOCOL APURWA D. PALIWAL 1, PROF.
DISTRIBUTED SYSTEMS CSCI 4963/ /4/2015
1 DISTRIBUTED SYSTEMS CSCI 4963/6963 12/4/2015 2 Info Quiz 7 on Tuesday. Project 2 submission URL is posted on the web site Submit your source code and project report (PDF!!!) in a single zip file. If
Peer-to-peer & Energy Consumption
Peer-to-peer & Energy Consumption T-110.7100 Applications and Services in Internet, Fall 2010 Jukka K. Nurminen Principal Researcher, Nokia Research Center Adjunct Professor, Department of Computer Science
CS 470 Spring Distributed Web and File Systems. Mike Lam, Professor. Content taken from the following:
CS 470 Spring 2017 Mike Lam, Professor Distributed Web and File Systems Content taken from the following: "Distributed Systems: Principles and Paradigms" by Andrew S. Tanenbaum and Maarten Van Steen (Chapters
Lecture 17: Peer-to-Peer System and BitTorrent
CSCI-351 Data communication and Networks Lecture 17: Peer-to-Peer System and BitTorrent (I swear I only use it for Linux ISOs) The slide is built with the help of Prof. Alan Mislove, Christo Wilson, and
Internet Technology. 06. Exam 1 Review Paul Krzyzanowski. Rutgers University. Spring 2016
Internet Technology 06. Exam 1 Review Paul Krzyzanowski Rutgers University Spring 2016 March 2, 2016 2016 Paul Krzyzanowski 1 Question 1 Defend or contradict this statement: for maximum efficiency, at
EE 122: Peer-to-Peer (P2P) Networks. Ion Stoica November 27, 2002
EE 122: Peer-to-Peer (P2P) Networks Ion Stoica November 27, 22 How Did it Start? A killer application: Naptser - Free music over the Internet Key idea: share the storage and bandwidth of individual (home)
Chapter 2: Application layer
Chapter 2: Application layer 2. Principles of network applications app architectures app requirements 2.2 Web and HTTP 2.4 Electronic Mail SMTP, POP3, IMAP 2.5 DNS 2.6 P2P applications 2.7 Socket programming
CSE 486/586 Distributed Systems Peer-to-Peer Architectures
CSE 486/586 Distributed Systems eer-to-eer Architectures Steve Ko Computer Sciences and Engineering University at Buffalo CSE 486/586 Last Time Gossiping Multicast Failure detection Today s Question How
EECS 122: Introduction to Computer Networks Overlay Networks and P2P Networks. Overlay Networks: Motivations
EECS 122: Introduction to Computer Networks Overlay Networks and P2P Networks Ion Stoica Computer Science Division Department of Electrical Engineering and Computer Sciences University of California, Berkeley
Internet Technology 3/2/2016
Question 1 Defend or contradict this statement: for maximum efficiency, at the expense of reliability, an application should bypass TCP or UDP and use IP directly for communication. Internet Technology
CS 470 Spring Distributed Web and File Systems. Mike Lam, Professor. Content taken from the following:
CS 470 Spring 2018 Mike Lam, Professor Distributed Web and File Systems Content taken from the following: "Distributed Systems: Principles and Paradigms" by Andrew S. Tanenbaum and Maarten Van Steen (Chapters
12/5/16. Peer to Peer Systems. Peer-to-peer - definitions. Client-Server vs. Peer-to-peer. P2P use case file sharing. Topics
// Topics Peer to Peer Systems Introduction Client-server vs peer to peer Peer-to-peer networks Routing Overlays Structured vs unstructured Example PP Systems Skype login server Peer-to-peer - definitions
Internet Protocol Stack! Principles of Network Applications! Some Network Apps" (and Their Protocols)! Application-Layer Protocols! Our goals:!
Internet Protocol Stack! Principles of Network Applications! application: supporting network applications!! HTTP,, FTP, etc.! transport: endhost-endhost data transfer!! TCP, UDP! network: routing of datagrams
Azureus Plugin for Facebook Integration
Azureus Plugin for Facebook Integration Mike House-Vording, 100300955 mhvordin@connect.carleton.ca 1. Introduction This project seeks to integrate two major trends currently taking place on the internet:
P2P Applications. Reti di Elaboratori Corso di Laurea in Informatica Università degli Studi di Roma La Sapienza
P2P Applications Reti di Elaboratori Corso di Laurea in Informatica Università degli Studi di Roma La Sapienza Versione originale delle slides fornita da Dora Spenza e Marco Barbera P2P Paradigm Late 80
Web caches (proxy server) Applications (part 3) Applications (part 3) Caching example (1) More about Web caching
By the end of this lecture, you should be able to. Explain the idea of edge delivery Explain the operation of CDNs Explain the operation of P2P file sharing systems such as Napster and Gnutella Web caches
Distributed Systems. peer-to-peer Johan Montelius ID2201. Distributed Systems ID2201
Distributed Systems ID2201 peer-to-peer Johan Montelius 1 Idéa use resources in edge of network computing storage communication 2 Computing 3 seti@home central server millions of clients hundred of thousands
Peer-to-Peer Networks
Peer-to-Peer Networks 14-740: Fundamentals of Computer Networks Bill Nace Material from Computer Networking: A Top Down Approach, 6 th edition. J.F. Kurose and K.W. Ross Administrivia Quiz #1 is next week
Introduction to Computer Networks
Introduction to Computer Networks Tian Song ( 嵩天 ), Ph.D., Assoc. Prof. songtian@bit.edu.cn Introduction to Computer Networks DNS, FTP and Mail Tian Song ( 嵩天 ), Ph.D., Assoc. Prof. songtian@bit.edu.cn
P2P Computing. Nobuo Kawaguchi. Graduate School of Engineering Nagoya University. In this lecture series. Wireless Location Technologies
P2P Computing Nobuo Kawaguchi Graduate School of Engineering Nagoya University 1 In this lecture series Wireless Location Technologies Location Information Processing P2P Computing(Today) Plug and Play
Unit background and administrivia. Foundations of Peer-to- Peer Applications & Systems
A Course on Foundations of Peer-to-Peer Systems & Applications CS 6/75995 Foundation of Peer-to-Peer Applications & Systems Kent State University Dept. of Computer Science www.cs.kent.edu/~javed/class-p2p08/
Big Compute, Big Net & Big Data: How to be big
> 2014 HPC Advisory Council Brazil Conference Big Compute, Big Net & Big Data: How to be big Luiz Monnerat PETROBRAS 26/05/2014 > Agenda Big Compute (HPC) Commodity HW, free software, parallel processing,
Peer-to-Peer Streaming Systems. Behzad Akbari
Peer-to-Peer Streaming Systems Behzad Akbari 1 Outline Introduction Scaleable Streaming Approaches Application Layer Multicast Content Distribution Networks Peer-to-Peer Streaming Metrics Current Issues
From Internet Data Centers to Data Centers in the Cloud
From Internet Data Centers to Data Centers in the Cloud This case study is a short extract from a keynote address given to the Doctoral Symposium at Middleware 2009 by Lucy Cherkasova of HP Research Labs
Application-Layer Protocols Peer-to-Peer Systems, Media Streaming & Content Delivery Networks
COMP 431 Internet Services & Protocols Application-Layer Protocols Peer-to-Peer Systems, Media Streaming & Content Delivery Networks Jasleen Kaur February 14, 2019 Application-Layer Protocols Outline Example
Introduction to P P Networks
Introduction to P P Networks B Sc Florian Adamsky florianadamsky@iemthmde http://florianadamskyit/ cbd Internet Protocols and Applications SS B Sc Florian Adamsky IPA / Outline Introduction What is P P?
Outline Computer Networking. HTTP Basics (Review) How to Mark End of Message? (Review)
Outline 15-441 Computer Networking Lecture 25 The Web HTTP review and details (more in notes) Persistent HTTP review HTTP caching Content distribution networks Lecture 19: 2006-11-02 2 HTTP Basics (Review)
Today. Architectural Styles
Today Architectures for distributed systems (Chapter 2) Centralized, decentralized, hybrid Middleware Self-managing systems Lecture 2, page 1 Architectural Styles Important styles of architecture for distributed
15-744: Computer Networking P2P/DHT
15-744: Computer Networking P2P/DHT Overview P2P Lookup Overview Centralized/Flooded Lookups Routed Lookups Chord Comparison of DHTs 2 Peer-to-Peer Networks Typically each member stores/provides access
BitTorrent. Internet Technologies and Applications
BitTorrent Internet Technologies and Applications Aims and Contents Aims Show benefits of P2P for file downloads Explain concepts of BitTorrent as a P2P file sharing application Show how BitTorrent protocol
Content Overlays. Nick Feamster CS 7260 March 12, 2007
Content Overlays Nick Feamster CS 7260 March 12, 2007 Content Overlays Distributed content storage and retrieval Two primary approaches: Structured overlay Unstructured overlay Today s paper: Chord Not
P2P content distribution
P2P content distribution T-110.7100 Applications and Services in Internet, Fall 2010 Jukka K. Nurminen 1 V1-Filename.ppt / yyyy-mm-dd / Initials Steps of content sharing Share content Find content Transfer
Scaling Problem Computer Networking. Lecture 23: Peer-Peer Systems. Fall P2P System. Why p2p?
Scaling Problem 15-441 Computer Networking Millions of clients server and network meltdown Lecture 23: Peer-Peer Systems Peter Steenkiste Fall 2010 www.cs.cmu.edu/~prs/15-441-f10 2 P2P System Why p2p?
Q U E S T I O N 3 In the current version of IP (IPv4), the use of TCP and UDP headers differ in which of the following ways?
Preview Test: HW 2 Test Information Description Chapter 2 Instructions Due:Oct. 17 5 PM Multiple Attempts Not allowed. This test can only be taken once. Force Completion This test can be saved and resumed
Opportunities for Exploiting Social Awareness in Overlay Networks. Bruce Maggs Duke University Akamai Technologies
Opportunities for Exploiting Social Awareness in Overlay Networks Bruce Maggs Duke University Akamai Technologies The Akamai Intelligent Platform A Global Platform: 127,000+ Servers 1,100+ Networks 2,500+
Overlay and P2P Networks. Introduction and unstructured networks. Prof. Sasu Tarkoma
Overlay and P2P Networks Introduction and unstructured networks Prof. Sasu Tarkoma 14.1.2013 Contents Overlay networks and intro to networking Unstructured networks Overlay Networks An overlay network
Introduction to Computer Networks
Introduction to Computer Networks Tian Song ( 嵩天 ), Ph.D., Assoc. Prof. songtian@bit.edu.cn Introduction to Computer Networks Design Issue and Error Correction Tian Song ( 嵩天 ), Ph.D., Assoc. Prof. songtian@bit.edu.cn
CompSci 356: Computer Network Architectures Lecture 21: Overlay Networks Chap 9.4. Xiaowei Yang
CompSci 356: Computer Network Architectures Lecture 21: Overlay Networks Chap 9.4 Xiaowei Yang xwy@cs.duke.edu Overview Problem Evolving solutions IP multicast Proxy caching Content distribution networks
Architectures for distributed systems (Chapter 2)
Today Architectures for distributed systems (Chapter 2) Architectural styles Client-server architectures Decentralized and peer-to-peer architectures Lecture 2, page!1 Module 1: Architectural Styles Important
Overlay networks. To do. Overlay networks. P2P evolution DHTs in general, Chord and Kademlia. Turtles all the way down. q q q
Overlay networks To do q q q Overlay networks P2P evolution DHTs in general, Chord and Kademlia Turtles all the way down Overlay networks virtual networks Different applications with a wide range of needs
CS 640 Introduction to Computer Networks. Today s lecture. What is P2P? Lecture30. Peer to peer applications
Introduction to Computer Networks Lecture30 Today s lecture Peer to peer applications Napster Gnutella KaZaA Chord What is P2P? Significant autonomy from central servers Exploits resources at the edges
Lecture 21 P2P. Napster. Centralized Index. Napster. Gnutella. Peer-to-Peer Model March 16, Overview:
PP Lecture 1 Peer-to-Peer Model March 16, 005 Overview: centralized database: Napster query flooding: Gnutella intelligent query flooding: KaZaA swarming: BitTorrent unstructured overlay routing: Freenet
Chapter 10: Application Layer
Chapter 10: Application Layer Application, Session and Presentation Presentation and Session Layers Session layer Functions, creates, and maintains dialogs between source and destination applications Handles
Overlay and P2P Networks. Applications. Prof. Sasu Tarkoma and
Overlay and P2P Networks Applications Prof. Sasu Tarkoma 10.2.2015 and 12.2.2015 Contents Monday 9.2. Applications I BitTorrent Mainline DHT Scribe and PAST Thursday 12.2. Applications II P2PSIP Internet
Chapter 10: Application Layer CCENT Routing and Switching Introduction to Networks v6.0
Chapter 10: Application Layer CCENT Routing and Switching Introduction to Networks v6.0 CCNET v6 10 Chapter 10 - Sections & Objectives 10.1 Application Layer Protocols Explain the operation of the application
Unit 8 Peer-to-Peer Networking
Unit 8 Peer-to-Peer Networking P2P Systems Use the vast resources of machines at the edge of the Internet to build a network that allows resource sharing without any central authority. Client/Server System
DISTRIBUTED COMPUTER SYSTEMS ARCHITECTURES
DISTRIBUTED COMPUTER SYSTEMS ARCHITECTURES Dr. Jack Lange Computer Science Department University of Pittsburgh Fall 2015 Outline System Architectural Design Issues Centralized Architectures Application
Topics in P2P Networked Systems
600.413 Topics in P2P Networked Systems Week 4 Measurements Andreas Terzis Slides from Stefan Saroiu Content Delivery is Changing Thirst for data continues to increase (more data & users) New types of
Peer-to-peer. T Applications and Services in Internet, Fall Jukka K. Nurminen. 1 V1-Filename.ppt / / Jukka K.
Peer-to-peer T-110.7100 Applications and Services in Internet, Fall 2009 Jukka K. Nurminen 1 V1-Filename.ppt / 2008-10-22 / Jukka K. Nurminen Schedule Tue 15.9.2009 12-14 Tue 22.9.2009 12-14 Introduction
Overlay Networks: Motivations. EECS 122: Introduction to Computer Networks Overlay Networks and P2P Networks. Motivations (cont d) Goals.
Overlay Networks: Motivations CS : Introduction to Computer Networks Overlay Networks and PP Networks Ion Stoica Computer Science Division Department of lectrical ngineering and Computer Sciences University
Today. Architectural Styles
Today Architectures for distributed systems (Chapter 2) Centralized, decentralized, hybrid Middleware Self-managing systems Lecture 2, page 1 Architectural Styles Important styles of architecture for distributed
Lecture 8: Application Layer P2P Applications and DHTs
Lecture 8: Application Layer P2P Applications and DHTs COMP 332, Spring 2018 Victoria Manfredi Acknowledgements: materials adapted from Computer Networking: A Top Down Approach 7 th edition: 1996-2016,
P2P. 1 Introduction. 2 Napster. Alex S. 2.1 Client/Server. 2.2 Problems
P2P Alex S. 1 Introduction The systems we will examine are known as Peer-To-Peer, or P2P systems, meaning that in the network, the primary mode of communication is between equally capable peers. Basically
Distributed Systems. 17. Distributed Lookup. Paul Krzyzanowski. Rutgers University. Fall 2016
Distributed Systems 17. Distributed Lookup Paul Krzyzanowski Rutgers University Fall 2016 1 Distributed Lookup Look up (key, value) Cooperating set of nodes Ideally: No central coordinator Some nodes can
P2P Networks - General
P2P Networks-General Prof. Jukka K. Nurminen Data Communications Software (DCS) Lab, Department of Computer Science and Engineering, Aalto University Jukka K. Nurminen 137/09/2013 Aalto University P2P
BitTorrent and CoolStreaming
BitTorrent and CoolStreaming Jukka K. Nurminen Data Communications Software (DCS) Lab, Department of Computer Science and Engineering, Aalto University Jukka K. Nurminen Aalto University P2P Networks BitTorrent
Middleware and Distributed Systems. Peer-to-Peer Systems. Peter Tröger
Middleware and Distributed Systems Peer-to-Peer Systems Peter Tröger Peer-to-Peer Systems (P2P) Concept of a decentralized large-scale distributed system Large number of networked computers (peers) Each
Peer to Peer Computing
Peer to Peer Computing These slides are based on the slides made available by the authors of Computer Networking: A Top Down Approach Featuring the Internet, 2 nd edition. Jim Kurose, Keith Ross Addison-Wesley,
John S. Otto Mario A. Sánchez John P. Rula Fabián E. Bustamante
John S. Otto Mario A. Sánchez John P. Rula Fabián E. Bustamante Northwestern, EECS http://aqualab.cs.northwestern.edu ! DNS designed to map names to addresses Evolved into a large-scale distributed system!