Hi Jonathan,

I agree with you there - these nodes would *not* be participating in real IP
or mesh forwarding. 

However the ND process needs to function with these nodes. If we rely on
4861, these nodes which are going to miss packets must have a way to defend
their address!

  -Colin

-----Original Message-----
From: Jonathan Hui [mailto:[email protected]] 
Sent: October 13, 2009 11:04 PM
To: Colin O'Flynn
Cc: 'Adam Dunkels'; '6lowpan'
Subject: Re: [6lowpan] Fundamental concerns about 6lowpan ND


Hi Colin,

On Oct 13, 2009, at 2:56 PM, Colin O'Flynn wrote:

> My concern for this sleeping method is very low power nodes. These  
> would be
> parasitic nodes for example that can only wake up every few seconds  
> at most.
>
> These super-low power nodes could not listen continuously. Forcing  
> them to
> require waking up would basically eliminate them from the picture.

For these very special devices, I often prefer to view them as  
wireless peripherals rather than IP devices.  They most likely won't  
be able to participate in forwarding/routing functions.  Any bi- 
directional communication tends not to be end-to-end since they want  
to minimize round-trip time.

--
Jonathan Hui


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