> The big problem with a token ring network is you take the network down
while
...

That's true. Also that's why that control message is a good idea from
Christopher, so that if the control message did not get through then there
is an error in the system - aka timed out :-)

With a daisy chain mentioned by Lee would be better in diagnosing where is
the problem (which is the last good node), however, you would need two RX/TX
pair for each node for that.

Tamas



On Tue, Aug 26, 2008 at 1:10 PM, Alan B. Pearce <A.B.Pearce@rl.ac.uk> wrote:

> >> So the 1st PIC's TX goes to the 2nd RX, then its TX to the 3rd
> >> RX and so on
> >
> >That's not a bad idea, and also if you want to cut costs a little
>
> The big problem with a token ring network is you take the network down
> while
> you remove or fit a node, between changing from the node to the blanking
> plug. You also have to have some form of recovery mechanism (time out) if
> the token gets lost due to the node removal or a noise hit on the comms
> line.
>
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-- 
Rudonix DoubleSaver
http://www.rudonix.com
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