some highly selective internet history

with apologies to the many key people i left out

benjamin black b@b3k.us

part 1: packet switching

Paul Baran

1960-1962

On Distributed Communications

communications networks

surviving nuclear war

packet-switching

Donald Davies

Leonard Kleinrock

Information Flow in Large Communication Nets

theoretical basis for packet- switching

packet-switching

invented 3 times 3 places 3 reasons

we are on the right track

ARPANet

part 2: ip

Vint Cerf

Bob Kahn

tcp/ip

simple & open

separation of concerns

ip - global routing

tcp - reliable delivery

decoupled from hardware

application presentation COMPLEXITY session transport network data link physical

independent administrative domains

federated

addressing routing policies

“network of networks”

part 3: protocol wars

meanwhile, outside academia...

explosion of communication demand

explosion of communication protocols

mainframe & mini

sna decnet

x.25 frame relay atm

ip ipx/spx appletalk ethernet ...

complexity down the stack

expensive (opex & capex)

upgrades mean forklifts

proprietary incompatible

no value-add for protocol proliferation

what we needed:

simple & open

federated/ hierarchical

ip over *

ethernet frame relay tdm ...

* over ip

ipsec and ssl vpn voip web email ...

part 4: partly cloudy

cloud computing 2008

packet-switching 1968

it won’t take 40 years this time

less than 10

we can expect:

wild proliferation of protocols

complexity will move up the stack

...into the apps.

and then...

rapid convergence of protocol

Baran’s diagrams

apps for the cloud will follow these models

winning protocol features?

simple & open

federated/ hierarchical

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benjamin black b@b3k.us

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some highly selective internet history

by Benjamin Black on Apr 10, 2009

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some highly selective internet history — Presentation Transcript