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OLPC Networking Overview

J
James Morris

The document provides an overview of the networking aspects of the One Laptop Per Child (OLPC) project. It describes the OLPC hardware as a $100 rugged laptop with limited specs. The software is a minimal Linux-based system with a Sugar GUI. Networking requirements include adapting to various scenarios from small village networks to large school networks. Key networking technologies utilized are 802.11s wireless mesh networking with AODV and OLSR routing, IPv6 autoconfiguration, and potential IPSec encryption. The envisioned topology has schools connected to "mesh portals" that link to other schools and the internet.

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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    
Questions?    

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OLPC Networking Overview

  • 1. OLPC Networking Overview Netconf 2006 Tokyo James Morris jmorris@namei.org    
  • 2. OLPC Project ● “ One Laptop per Child” ● Education project ● Every aspect is innovative    
  • 3. Hardware ● $100 laptop ● 128MB RAM ● 500MHz AMD Geode ● 500MB Flash (no hard disk) ● Video camera ● Wireless ● Rugged    
  • 4. Software ● LinuxBios ● Linux OS (Fedora) ● Minimal system ● Sugar GUI ● Web, chat, Wikipedia, music performance ● Localizations (Americas, Africa, Asia etc.)    
  • 5. 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    
  • 6. 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 ?  
  • 7. 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