recognizing a previous connection

[david at lang.hm]

On Thu, 11 Sep 2008, rihoward1 at gmail.com wrote:

> The problem in this case is when the child closes the lid they will
> lose there connection.  When they open the lid, the XO will 1st
> attempt to connect to a mesh then the AP.
>
> Also there is the assumption that the schools using APs will have a
> single ESSID and that in practice a large number of APs will behave
> in this situation.  Prove it!

many APs with one ESSID is the normal way of deploying wifi through an 
area.

by the way, those with USENIX memebership should take a look at the most 
recent ;login. there is an article in there about managing large numbers 
of APs to give optimal coverage in very dense environments

http://usenix.org/publications/login/2008-08/pdfs/murty.pdf

David Lang

> This also assumes that the APs, that the large schools have
> purchased,  support WSD correctly.
>
>
>
> On Sep 11, 2008, at 4:28 PM, Martin Langhoff wrote:
>
>> On Fri, Sep 12, 2008 at 9:33 AM, Greg Smith
>> <gregsmitholpc at gmail.com> wrote:
>>> I'm not sure this dictates the right design, but I am aware of
>>> several
>>> sites planning to use multiple access points.
>>>
>>> One in the US will have ~40! and I believe that another in the US
>>> (NYC)
>>> has many APs and a robust network.
>>> One school in Rwanda has recently been funded to install 10 x APs.
>>
>> Concept mixup! To clarify: these sites are going to have multiple APs
>> but most likely to have a single ESSID, or perhaps a low number of
>> ESSIDs (ie: one per building or one per floor).
>>
>> When you have a large infra with many APs all using the same ESSID
>> ('name'), network manager and the rest of the wifi machinery in the XO
>> will do the right thing (that is: use the one with strongest signal).
>>
>> All this 'recognise a previous connection' thread is about recognising
>> the same ESSID. It should not be a problem.
>>
>> cheers,
>>
>>
>>
>> m
>> --
>>  martin.langhoff at gmail.com
>>  martin at laptop.org -- School Server Architect
>>  - ask interesting questions
>>  - don't get distracted with shiny stuff - working code first
>>  - http://wiki.laptop.org/go/User:Martinlanghoff
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