networking scenarios

[Walter Bender]

It depends upon what you mean. We have situations where even two
laptops connected by simple mesh fail to properly transfer data. Then
again, the failures also occur in the other 3 scenarios as well.

-walter

On Fri, Apr 11, 2008 at 7:46 PM, Polychronis Ypodimatopoulos
<ypod at mit.edu> wrote:
> Dafydd Harries wrote:
>  > This is something which was not completely clear to me until I talked to Wad
>  > about it the other day, and I think other people might find it useful. It
>  > should probably go on the wiki (assuming it isn't already there somewhere). I'd
>  > like some feedback about where it belongs. The closest thing I've found is this
>  > page:
>  >
>  >   http://wiki.laptop.org/go/Scenario_taxonomy
>  >
>  > Any errors are my own.
>  >
>  > There are four networking scenarios:
>  >
>  >  - simple mesh
>  >    - no access point
>  >    - no school server
>  >    - we are currently aiming to support up to 15 laptops in this case
>  >
>  We are beyond 15 laptops in the simple mesh scenario. I am consistently
>  testing "simple mesh" with 30 laptops and we are aiming for more than
>  50. Scaling the "simple mesh" somewhere between 50 - 100 laptops may
>  have significant impact on the (potential need for) other scenarios.
>
>  Pol
>
>
>  >  - simple WiFi
>  >    - access points
>  >      - which tend not to handle multicast very well (1Mbit/s peak)
>  >    - no school server
>  >    - this is what G1G1 laptops will tend to encounter
>  >    - typically in the developed world
>  >  - school mesh
>  >    - no access point
>  >    - school server with Jabber server
>  >  - school WiFi
>  >    - access points
>  >    - school server with Jabber server
>  >      - only one server at a time
>  >    - this is what is deployed in Peru
>  >
>  > Our current priority in terms of collaboration is to improve supprt for the
>  > fourth case, as this is the situation most of our existing laptops are
>  > deployed in, and it's likely that upcoming deployments will be similar. Our
>  > secondary priority is improving support for the second case, as this is what
>  > will tend happen when laptops are taken home from school.
>  >
>
>
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