1 7 the history of computer networking and the internet
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1.7 The history of Computer Networking and the Internet. 20 minutes of joy with Patric and Andreas. The switching 60’s. Telephone. Telephone network is the dominating communication network Used circuit switching . Computer communication. Short bursts of information

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1 7 the history of computer networking and the internet

1.7 The history of Computer Networking and the Internet

20 minutes of joy with Patric and Andreas


The switching 60 s

The switching 60’s


Telephone

Telephone

Telephone network is the dominating communication network

Used circuit switching


Computer communication

Computer communication

  • Shortbursts of information

  • Long inactivity periods

  • Packet switching

    • Moresuitable for this type of communication

    • More robust


Arpanet

ARPAnet

  • Advanced Research Projects Agency at MIT

    • The first packet switchingnetwork

  • IMP (Interface message processor) installed at

    • UCLA

    • UC Santa Barbara

    • Stanford

    • Univ. of Utah


The 70 s

The 70’s


1 7 the history of computer networking and the internet

  • 1972:

  • ARPAnet is nowconsistent of 15 nodes

  • The first host-to-hostprotocol

    • NCP (Network Control Protocol) enablesapplications to be written

    • First e-mail program


New networks emerging

New networksemerging…

  • ALOHAnet

    • Enabling communication over microwaves between the Hawaiian Islands.

  • Telenet

    • Commercial packet switching network based on ARPAnet’s technology

  • Cyclades

    • French packet switching network

  • IBM’s SNA

    • ParallelledARPAnet’s work

  • Tymnet, GE Information Services network etc.

    • Time sharing networks


Networks of networks

Networks of networks

DARPA (Defence ARPA) funded the connection of networks

Networks of networksalsocalledinernetting


Protocols

Protocols

  • (early version of) TCP wasused for connecting the networks

  • Forwardingfunctions IP

  • UDP


More protocols

MoreProtocols

  • Ethernet protocol

    • Enablingwiredbasedbroadcastsharingnetworks

    • Laying the foundation for LAN

  • ALOHA Protocol

    • Multiple access protocol


The 80 s

The 80’s


More computer networks

More computer networks

  • BITNET

    • University e-mail and filesharing

  • CSNET

    • Linking researchers without access to the ARPAnet

  • NSFNET

    • Connection to supercomputing centers

    • 56kbps backbone, later 1,5Mbps and serving as the linkingbackbonebetween regional networks


Standardisation

Standardisation

  • TCP/IP replacing NCP as the standard hostprotocol for ARPAnet

  • The late 80’s:

    • Congestioncontrol is added to TCP

    • DNS is invented


The 90 s

The 90’s


Commercialisation

Commercialisation

ARPAnetclosesdown

NSFNET serving as backboneconnecting the regional networks and opening the network for commercialpurposes

In 1995 NSFNET is decomissioned and Internet Service Providers serves as the new backbones in itsplace


Developments

Developments

  • The key components of the web: HTML, HTTP, web server and a webbrowser is developed in the early 90’s

  • 93: webbrowsers with GUI.

  • 95: Web commerce

  • Killerapplications:

    • E-mail

    • The Web

    • IM (ICQ)

    • P2P filesharing (Napster)


The rest is history

The rest is history…


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