1. Open. Connect. Network.
Connecting the next 5 billion?
Presentation:
Sameer Verma, Ph.D.
Caribbean ITS conference 2009
Associate Professor Montego bay, Jamaica
Information Systems Department Online at http://slideshare.net/sverma
San Francisco State University
San Francisco, CA 94132 USA Creative commons license
http://creativecommons.org/
3. Workshop
work∙shop
Function: noun
Date: 1562
a usually brief intensive educational program for a relatively small
group of people that focuses especially on techniques and skills in
a particular field
5. Drivers of Change
● Better chips
● Moore’s Law: Performance doubles every 18 to 24
months, with size and cost remaining at a constant
● 1971: Intel C4004 2300 transistors
● 2009: Intel 8core Xeon (NehalemEX) – 2.3 billion
transistors
6. Drivers of Change
● Bigger pipes
● Metcalfe’s Law: Usefulness of a network increases
with the square of the number of users connected
to the network
● Internet
– 1969 – 4 nodes (October 1969)
– 2009 – 625,226,456 nodes (Jan 2009)
Source: https://isc.org/solutions/survey/history
8. Value within a network
Community X Community Y
A B
(32) = 9 connections
2 nodes C to C
C E C to D
(22) = 4 connections
C to E
A to A
D to C
A to B
D to D
B to A D D to E
B to B
3 nodes E to C
E to D
E to E
Note: Each community has some potential value, that may or may not be completely realized
9. Value of a combined network – community Z
5 nodes
A B
C E
(52) = 25 connections D
A to A B to A C to A D to A E to A
A to B B to B C to B D to B E to B
A to C B to C C to C D to C E to C
A to D B to D C to D D to D E to D
A to E B to E C to E D to E E to E
10. Where's the cheese?
● (2+3) nodes leads to (2+3)2 connections
● 5 nodes lead to 25 connections
● We already had 4 in community X and 9 in
community Y
● In the new community Z, we have an extra of 12
connections.
● This is where the cheese is at, so to speak.
11. 2ab
● Drivers of change
● Metcalfe's law
– http://en.wikipedia.org/wiki/Metcalfe's_law
● Moore's law
– http://en.wikipedia.org/wiki/Moore's_law
12. Pushing the supply side
A common question:
“Do they have a business model?”
hint: the www did not have a business model
13. Leveraging the network
For value to flow across the network,
interoperability is key
The network must be open and unencumbered
hint: look up net neutrality
14. Email works
RFC 822
STANDARD FOR THE FORMAT OF ARPA
INTERNET TEXT MESSAGES
August 13, 1982
24. Trixbox
● CentOS Linux based
● 1.6 GHz DualCore
● 1GB RAM
● Can handle
● 48 ports
● 200 SIP phones
http://www.trixbox.org/
Or simply use a PIII with 512 MB RAM
57. Activities
● Write
● A simple word processor
● Chat
● Similar to Google Talk
● Browse
● Firefoxbased
● Record
● stills and video
More activities... http://wiki.laptop.org/go/Activities
59. Mesh Networking
● Mesh does not require central hublike
infrastructure
● Wireless mesh works even when the computer
sleeps
Based on an early draft of IEEE 802.11s
60. Under a tree model
Mesh “under a tree” model.
See slide 7 at http://wiki.laptop.org/images/a/a3/Country_Technical_Support.pdf
63. Until then? Sneakernet!
● Offline Internet
● Not so far fetched. Akamai and Internet Archive do
something similar
● How long before we run the mirroring cycle?
● See project:
● Wizzy
– http://en.wikipedia.org/wiki/Wizzy_Digital_Courier
73. This presentation is made with
OpenOffice.Org Impress.
Its your intellectual property. Keep it open.
You have a choice.
Vote with your fingers.
http://openoffice.org/
