OLPC Networking Overview

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Information about OLPC Networking Overview

Published on June 30, 2009

Author: jamesmorris

Source: slideshare.net


OLPC Networking Overview
Netconf 2006, Tokyo

OLPC Networking Overview Netconf 2006 Tokyo James Morris jmorris@namei.org    

OLPC Project ● “ One Laptop per Child” ● Education project ● Every aspect is innovative    

Hardware ● $100 laptop ● 128MB RAM ● 500MHz AMD Geode ● 500MB Flash (no hard disk) ● Video camera ● Wireless ● Rugged    

Software ● LinuxBios ● Linux OS (Fedora) ● Minimal system ● Sugar GUI ● Web, chat, Wikipedia, music performance ● Localizations (Americas, Africa, Asia etc.)    

Networking Requirements ● Adapt to various scenarios: – A few users in a village, possibly with no infrastructure of any kind. – School environment, up to several thousand laptops, some infrastructure ● Full auto-configuration    

Networking Technologies ● Ad-hoc wireless mesh – 802.11s at L2, in firmware – AODV (mandatory) – OLSR (optional) ● IPv6 – Auto-configuration – End to end – Flexible, large address space   ● IPSec ?  

Topology ● Schools will have “ mesh portals” – ARM-based Debian servers w/ disk & 256MB RAM – Linked to other schools & Internet – “ Active antennas” - USB wireless w/ long cables ● Country may have 100k mesh portals ● Each mesh portal may have 3000 clients ● Bridging, tc very important ● Governments may assist with infrastructure    


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