[Nepal] inter school mesh

Dev Mohanty devm at nepalwireless.net
Sun Apr 6 01:55:41 EDT 2008

Would look forward to discussing it with you and getting started on it.

Though I have worked on the linksys wrt54gl but then not with external
antennas, so guess would be great getting to tweak things on it.

As with asterisk .. there was a server that I setup for 20 odd villages
not so long ago.. where we got the linksys/sipura adapters replaced with
digium cards, for external calls. They're connected with Grandstream Ip
phones and voip soft clients.

I believe we're 4:15 hrs ahead of you.. so early morning should work great
for me. How about tomorrow..let me know a time convenient to you..


> On Apr 4, 2008, at 8:06 AM, Dev Mohanty wrote:
>> Hi Aaron!
>> We'd love to have inter-connectivity over mesh to both schools, and we
>> definitely want the network to be scalable so that we are able to
>> inter-connect the new schools as when they get setup.
> jup, I think we can achieve something here.
>> Though guess there's plenty of testing we want to do on-site at both
>> schools to get a better understanding of the mesh behavior with heavy
>> traffic. As you mention, we wouldn't get too far having them
>> networked on
>> the 802.11s as there'd be way too much traffic clogging up the
>> network. We
> I want to add that the 802.11s implementation is really good IMHO But
> it was simply intended for local use. So, let's try to climb the next
> mountain now and cross connect schools ;-)
>> would need to have different chunks of network meshing up with another
>> over olsr. Though, it all sounds good theoretically.. wonder how
>> jabber
>> would play up.
> Well, jabber runs over regular TCP/IP right? So I guess it is used a
> lot for the presence etc. services, no?
>> Would like discuss what other alternatives we have besides jabber.
>> Guess
>> for the time being we'd have an asterisk server setup on one of the
>> boxes
>> so that the teachers can call in and discuss things between them.
> asterisk is done over here. We run the whole funkfeuer.at network
> with one asterisk server, outgoing phone calls are possible via call-
> by-call uplinks and of course internal calls are for free. Most of
> the outgoing calls are dirt cheap.
>> How about discussing it over skype, sometime in the around coming
>> mon-tue
>> as am out of town for the weekend.
> Hm, my goal would be to get you started as quickly as possible. Do
> you know the linksys WRT54GL setups with external wifi antennas?
> We use those a lot. Well, I propose that we talk really early in the
> morning my time zone (CET) or at evening (> 18:00) because I will be
> loaded with stuff at work.
> Would that be ok for you? My skype name is "ipo2323"
> best,
> a.
>> Regards,
>> Dev
>>> Hey Aaron!
>>> I would love to discuss this w/ you more but I am totally swamped
>>> over
>>> the next several weeks on QA for the XO's and bundled activities. Ah,
>>> doing QA I am now one with the IT proletariat.
>>> Your idea sounds great and Dev Mohanty is the guy to pursue it. He
>>> is in
>>> charge of all things networking for us. I will leave it to him to
>>> contact you.
>>> We very much want to interconnect the two schools so they can support
>>> each other. One of the teachers at Bishwamitra, Manoj Ghimire, has
>>> quite
>>> strong technical skills. We want to set up an Asterisk server so they
>>> can easily call each other. Dev is the lead on this.
>>> On Thu, 2008-04-03 at 15:13 +0200, Aaron Kaplan wrote:
>>>> Hi Bryan !
>>>> (brief preview: we managed to port sugar to the classmate - a story
>>>> will appear soon on olpcnews the next few days - stay tuned ;-) )
>>>> I would like to help you/ support you with running an inter-school
>>>> mesh (layer 3, olsr) between the different sites.
>>>> This way you can reach high redundancy in the network.
>>>> We were talking about that in Boston but somehow everybody is
>>>> constantly busy with things.
>>>> I would envision that there are basically two meshes: one local OLPC
>>>> layer 2 802.11s mesh and a layer 3 inter school mesh.
>>>> This way you won't get into scalability problems. The 802.11s mesh
>>>> won't scale up to many schools in one cloud. That would be to much
>>>> network traffic and nothing would work anymore. But by having two
>>>> networks you can break down the problem into reasonable chunks. We
>>>> would have to find a way how to relay traffic from one cloud to the
>>>> other in case that is necessary. Maybe via jabber servers or so.
>>>> If you are interested in that - drop me a mail or let's have a brief
>>>> skype call.
>>>> a.
>>>> --
>>>> L. Aaron Kaplan
>>>> nic.at   //   cert.at
>>>> kaplan at cert.at
>>>> +43 1 505 6416 / 46
>>> --
>>> Bryan W. Berry
>>> Systems Engineer
>>> OLE Nepal, http://www.olenepal.org
> --
> L. Aaron Kaplan
> nic.at   //   cert.at
> kaplan at cert.at
> +43 1 505 6416 / 46

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