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1 - Dening the Internet Internet Structure History of the...

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Defining the Internet Internet Structure History of the Internet Take-Home Points Defining the Internet Internet Structure and History Daniel Zappala Brigham Young University Computer Science Department Defining the Internet Daniel Zappala 1/28
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Defining the Internet Internet Structure History of the Internet Take-Home Points 1 Defining the Internet Components and Services Protocols A Network of Networks 2 Internet Structure A Network of Networks Network Edge Network Core 3 History of the Internet Early Middle Late Growth Looking Back 4 Take-Home Points Defining the Internet Daniel Zappala 2/28
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Defining the Internet Internet Structure History of the Internet Take-Home Points Questions of the Day What is the Internet? What does the Internet look like? Where did the Internet come from? Internet Mapping Project, Bill Cheswick Defining the Internet Daniel Zappala 3/28
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Defining the Internet Internet Structure History of the Internet Take-Home Points Components hosts routers networks links Defining the Internet Daniel Zappala 4/28
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Defining the Internet Internet Structure History of the Internet Take-Home Points Services distributed applications web email games commerce databases voting file sharing generic services on which applications can be built TCP : reliable data transfer UDP : unreliable data transfer Defining the Internet Daniel Zappala 5/28
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Defining the Internet Internet Structure History of the Internet Take-Home Points An Engineer’s Perspective Application Protocols HTTP FTP SMTP Gnutella BitTorrent Transport Protocols TCP UDP RTP Network Protocols IP IPv6 ICMP DHCP Link Protocols ARP Ethernet IEEE 802.11a,b,g,... PPP MPLS ATM Defining the Internet Daniel Zappala 6/28
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Defining the Internet Internet Structure History of the Internet Take-Home Points The Unique Role of the Internet Create a network of networks Develop standards so that the many existing (and yet to exist) networks can interoperate: IP, TCP the Internet is global and must run these standards your private intranet can do whatever you want it to do Defining the Internet Daniel Zappala 7/28
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Defining the Internet Internet Structure History of the Internet Take-Home Points A Network of Networks roughly hierarchical Tier-1 ISPs (UUNet, BBN/Genuity, Sprint, AT&T) provide national, international coverage treat each other as “equals” peer privately and at NAPs Defining the Internet Daniel Zappala 8/28
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Defining the Internet Internet Structure History of the Internet Take-Home Points Qwest Tier-1 USA Map Defining the Internet Daniel Zappala 9/28
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Defining the Internet Internet Structure History of the Internet Take-Home Points Tier-2, Tier-3, and local ISPs Tier-2 (regional) ISPs
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