TestMtg, June 6, 2007

June 6, 2007

Attending: Michail, Kim, Jim, Walter, Dan (rh), Miguel, Chris (rh), Cameron (rh), Zack (rh), Rajab (mv), Ronak (mv), Raja (mv), Javier (cb), Luis (cb)

• Michail went through his low level 802.11s test plan:

<http://wiki.laptop.org/go/802.11s_Connectivity_Test_Plan>

• Path Discovery
  • Used ping, ran tests over several hours, introduced new nodes
  • Found some lost pings in a noisy RF environment; no loss in anachoic chamber
  • Network randomly creates mesh paths if you don't force the paths
• Communications Integrity
  • Frame size (large frames) caused problems, so you need to use scp to ensure large frames

• Performance testing
  • Used Iperf
  • To establish a baseline need to use UDP between 2 nodes using 'infrastructure mode'
  • Found that XO performance does not go down as quickly as 1/n due to efficiencies in node-to-node connections
  • Very difficult to make a repeatable non-forced mesh topology
  • Need to set up tests to look for starvation or memory issues (over time)

• Walter suggested some usage cases:
  • 60 laptops, everyone talking to everyone
  • 60 laptops, everyone talking to a server
  • 15 groups of 4, or 4 groups of 15 (representing kids collaborating in smaller groups)
    • Groups defined geographically (clusters)
    • Non-cluster Groups (with remote participants)
  • Consider classroom topologies:
    • Rows of students
    • Circle of students
    • Clusters

• Tests to be added:
  • Multicast and broadcast
    • Non realtime
    • Realtime
  • Dynamic nature of the real world
    • Nodes coming and going
    • Reconfiguration of the network

• Action items:
  • Marvel India team has 20 laptops; Kim help them to get 40 more B2-2
  • India is building up knowledge and an automated test bed
  • Marvell with add their test plan to the wiki
  • Cozybit will provide programmable anycast address

• Items for Trial-2 schedule:
  • Operating while suspended
  • Mesh beacons
  • Programable anycast
  • Ascii entry for WEP keys
  • Finish support for WiFi compatibility (WPA)

• IPv6 discussion The applications driving IPv6 are:
  • management of remote XOs
  • allowing XOs to find other XOs around the world.

Need to understand what this requires for XO and for Server.