Re: [ericas] Examples of Internet protocols not working well in emergent regions

[Stephen Farrell <[e-mail]>]

On 04/29/2013 02:49 AM, Melinda Shore wrote:
> On 4/28/13 5:19 PM, Arturo Servin wrote:
>> 	Some ideas of possible challenges for the IP suite in emergent regions:
>>
>> 	- Long delay networks
>> 	- Low bandwidth networks
>> 	- Satellite networks (which are low BW and have long delays)
>> 	- Mesh wireless networks
>> 	- Networks not connected all the time
>> 	- Not reliable/slow backup networks (i.e. in many countries there is
>> just one ISP, how can we provide multi-home for critical services using
>> a not very reliable backup link, for example a satellite link, a 3/4G,
>> dial-up, etc.)
> 
> If I can split hairs for a second, these problems are not peculiar
> to emergent regions but to remote places without a lot of local
> infrastructure.  We have these same problems in Alaska (particularly
> in villages off the road system) and my understanding is that they're
> not uncommon in northern Canada and portions of some of the nordic
> countries.

True, at least based my experience off-road Northern Sweden. However,
in our case where we did DTN work, that was only true for about two
hundred people for a few weeks of the year (summer in the mountains
for the reindeer herders basically). If those conditions applied for
many more people all year 'round then that would be an entirely
different scenario.

So I for one am very interested in the nitty-gritty details as they
appear in different places.

S.