sergio masci wrote:
>> - Avoid "vague" commands ("toggle") in favor of more specific ones ("turn
>> off")
>> - Have the transmitter request the status before issuing the command 
>> again
>
> This implies that comms between two nodes is "serial" i.e. commands and
> responses must ping pong back and fore between two nodes (say A and B)
> before comms between other nodes can be accepted by either A or B
> otherwise things start getting really hairy.
>
> The other thing to consider is what happens if the "turn off" command is
> sent before the "turn on" command but arrives AFTER the "turn on" command.
> Here "toggle" actually is an advantage. Yes packet sequence numbers are
> definiately very useful for deciding what to do here.

Well, yes. We weren't talking about some abstract protocol where you could 
get messages out of sequence.

Vitaliy 

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