[OLPC Networking] Mesh network?

[Krishna Sankar (ksankar)]

My assumption is that, there are at least 3 levels:

L0: The laptop will have a certain level of collaborative functionality
(preloaded, tailored to the sponsoring nation/school/...) even without
ever having an internet connection. 

L1: Occasional connectivity - In this case content/collaborative apps
can be cached (and refreshed whenever appropriate connectivity is
available). Need to be bandwidth sensitive.

L2: Fully connected - at school or at home with internet connectivity.
In this scenario, kids can participate in school activities, internet
level activities et al.

L0 - apps would in C and py; most probably running directly
L1,L2 - Web scripting, AJAX, py et al; most probably thru a browser.

Thoughts ?

<k/>

> -----Original Message-----
> From: Richard Dietrich [mailto:richard at praxis-uk.com] 
> Sent: Wednesday, September 06, 2006 12:33 PM
> To: Krishna Sankar (ksankar)
> Cc: networking at laptop.org; MBurns
> Subject: Re: [OLPC Networking] Mesh network?
> 
> I think you have misunderstood.. what if there is no 
> connection to the internet even for the first laptop?
> How do you provide it?
> R
> On 6 Sep 2006, at 20:26, Krishna Sankar ((ksankar)) wrote:
> 
> > ;o) Good question. In simple my mind, the connectivity and 
> deployment 
> > scenarios are as follows:
> >
> > A)	Mesh connection to each other, enabling kids to play together,
> > games, learning, writing, music et al. For example introducing the 
> > chamber music masters and try to form an orchestra together 
> ! Another 
> > example is using a Wiki collectively to write stories or essays ....
> > Annotation, IM, .. All requires connectivity ...
> >
> > B)	At school, running school software, connected to each other and
> > to the class room server
> >
> > C)	And of course the traditional scenario, at school or home,
> > connected to internet.
> >
> > D)	I have only very limited exposure, but methinks, Internet is
> > more pervasive. And the hope is that Internet will reach 
> more and more 
> > into areas (OLPC being one of the catalysts)
> >
> > Thoughts ?
> >
> > <k/>
> >
> >> -----Original Message-----
> >> From: Richard Dietrich [mailto:richard at praxis-uk.com]
> >> Sent: Wednesday, September 06, 2006 12:18 PM
> >> To: Krishna Sankar (ksankar)
> >> Cc: networking at laptop.org; MBurns
> >> Subject: Re: [OLPC Networking] Mesh network?
> >>
> >> All very well guys -  but go back one stage
> >>
> >> What are you going to connect it too?
> >>
> >> I want to put them in a South African township of 1 
> million people, 
> >> so the school kids can use them.. but there is no internet 
> >> connection.
> >> And if thats in a township.. what chance do you stand in 
> rural areas?
> >> The mesh has to link into something.
> >>
> >> So yes, technically interesting.. but?
> >>
> >> Richard
> >> On 6 Sep 2006, at 20:10, Krishna Sankar ((ksankar)) wrote:
> >>
> >>> Interesting question. Actually I was also thinking about the same 
> >>> issue ! From my (limited) view :
> >>>
> >>>  	a)    There will be py level interfaces - dials, gages, switches
> >>> and control knobs and a coherent programming model. We do
> >> need APIs at
> >>> that layer.
> >>> 	b)    But the majority of the work would be done at the L1/2/3.
> >>> 	c)    The mesh (802.11s) will be implemented as a Layer1/L2
> >>> artifact
> >>> 	d)    The mesh mobility networking primitives would be more of
> >>> OLSR/AODV/DYMO (more of DYMO/OLSR than AODV) than normal
> >> OSPF. Could
> >>> be OSPF v3 with mobility as well.
> >>> 	e)	We also would need to work with D-Bus, the Avahi
> >>> layer(mDNS, local network forming et al) as well as the twisted 
> >>> framework (if that is part of the distribution)
> >>> 	f)	And we should not forget IPv6 !
> >>> 	
> >>>
> >>> Cheers
> >>> <k/>
> >>>
> >>>
> >>> ________________________________
> >>>
> >>> 	From: networking-bounces at laptop.org 
> >>> [mailto:networking-bounces at laptop.org] On Behalf Of MBurns
> >>> 	Sent: Wednesday, September 06, 2006 11:42 AM
> >>> 	To: networking at laptop.org
> >>> 	Subject: [OLPC Networking] Mesh network?
> >>> 	
> >>> 	
> >>> 	Has there been a clear plan on how to achieve the mesh network?
> >>> Will it be some python script/framework that acts like a router, 
> >>> maintaing a routing table and OSPF of available nodes? Or
> >> is even that
> >>> too high-level, and the mesh capabilities will be done at
> >> some lower
> >>> layer?
> >>> 	
> >>> 	I am generally interested in how it will be
> >> implemented, either from
> >>> scratch or from existing technology.
> >>> 	
> >>> 	Michael Burns
> >>> 	Network Engineering
> >>> 	Oregon State University
> >>> 	
> >>> _______________________________________________
> >>> Networking mailing list
> >>> Networking at laptop.org
> >>> http://mailman.laptop.org/mailman/listinfo/networking
> >>>
> >>>
> >>
> >
> >
>