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some highly selective internet
history
with apologies to the many key people i left out
benjamin [email protected]
part 1: packet switching
Paul Baran
RAND
1960-1962
On Distributed Communications
communications networks
surviving nuclear war
packet-switching
1965
Donald Davies
1962
Leonard Kleinrock
Information Flow in Large
Communication Nets
theoretical basis for packet-switching
packet-switching
invented 3 times3 places
3 reasons
we are on the right track
1969
ARPANet
part 2: ip
Vint Cerf
Bob Kahn
1973
tcp/ip
simple & open
separation of concerns
ip - global routing
tcp - reliable delivery
decoupled from hardware
application
presentation
session
transport
network
data link
physical
CO
MP
LE
XIT
Y
independent administrative
domains
federated
addressingroutingpolicies
“network of networks”
part 3: protocol wars
meanwhile, outside
academia...
explosion of communication
demand
explosion of communication
protocols
mainframe & mini
snadecnet
telco
x.25frame relay
atm
pc
ipipx/spx
appletalkethernet
...
complexity down the stack
expensive(opex & capex)
upgrades mean forklifts
proprietaryincompatible
no value-add for protocol proliferation
what we needed:
simple & open
separation of concerns
decoupled from hardware
federated/hierarchical
ip
now:
ip over *
ethernetframe relay
tdm...
* over ip
ipsec and ssl vpnvoipweb
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
separation of concerns
decoupled from hardware
federated/hierarchical
[this slide intentionally left blank]
benjamin [email protected]
