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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