Transcript Research is communication

Network Architecture (R02) - L1
10/10/13
Jon Crowcroft,
http://www.cl.cam.ac.uk/~jac22
http://www.cl.cam.ac.uk/teaching/1314/R02/
Course Structure
16 Lectures
several guest slots -
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Yury Audzivich - router h/w algorithmics
tba
Participation by you
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Reading &
Critique-ing papers
See “How to read a paper” by Keshav
http://www.sigcomm.org/ccr/drupal/files/p83-keshavA.pdf
Course Assessment
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Your involvement each week
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3 essays - compare/contrast
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Alternate me present & you all contribute
Due dates (Fridays < 4pm, to student admin)
Nov 1,
Nov 29,
start of next term (Jan 17)
An annotated bibligraphy
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At start of next term (Jan 17), but update each
week
Workload
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Read 1-2 papers per week
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Plus scan related material
Keep notes
Feel free to ask me more
Essays can be
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2-4 pages
Note form is fine
References/citing source material essential
Review of Internet Architecture
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Packet switching
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Datagram Network
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(video download can be faster than viewing)
“Stateless”
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No set up - fast for transactions
Work Conserving
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No circuit, virtual or otherwise
(end and router don’t share state)
(max pkt size unchanged for 30 yrs!)
Parsimony
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End to end model
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(clark et al)
Cautious Sender
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Forgiving Receiver
(postel principle)
Many different kinds
of applications
and
higher-level
protocols
IP
Many different
kinds
of networks
The “Hourglass Model”,
Steve Deering
Next week…
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Monday 14th Oct: I’ll do 2nd lecture
Thursday 17th you will be speaking
Thursday 17th Oct: I’ll set the first
essay and discuss topic #2
Remember the assignments for speaking
are online if you want to look ahead…