Chris. Aubrey-Smith wrote:
> I'm trying to add the above to my existing wired network.
> 
> The setup routine provides fields for two static IP addresses: one 
> provided by the ISP and one for the device.
> 
> For the first I've entered the IP address and subnet mask provided by my 
> ISP (Zen)
> 
> For the second I've selected the next IP address in sequence, and 
> entered the same subnet mask that everything else on the LAN uses.
> 
> When I try to save these settings, I get the message "Illegal subnet 
> mask!" Reverting to the router's default address and mask, ( 
> 192.168.1.1/255.255.255.0 <http://192.168.1.1/255.255.255.0>) I get the 
> same message, so I deduce that it's the one provided by Zen that it's 
> not happy with.
> 
> Can anyone suggest what's wrong?
> 
> Chris.
> 
Can you show us all the settings on the screen that gives the error? 
Vague memories are stirring of having seen something similar in the 
past, possibly with a Linksys device.  I have a feeling that the error 
message was misleading, and the fault was with another setting.
cheers
Chris
-- 
Chris Dennis                                  cgdennis@???
Fordingbridge, Hampshire, UK