@Carlosalot 

Hi,

Look for a menu that is similar to what is shown on the screenshot below. There you can define the address pool the router uses for automatic assignment of IP addresses to the client devices.

  @woozle 

Hi

Thanks for the reply, I did do exactly that and set it to 102 to 199 but then when I tried to reserve a IP address above 200 for one of the devices on my network it wouldn't allow it saying it needs to be in the DHCP IP range.

  @Carlosalot 

If that's the case, then I am afraid there is nothing you can do about it. It's the way the AX73's firmware has been designed.

There are router models that allow reserving IP addresses outside of the DHCP address pool and there are router models that don't. (and it's not just a matter of different manufacturers doing it differently, even within TP-Link it's not consistent) 

So you will need to expand the DHCP IP Address Pool to cover the addresses you want to assign via Address Reservation.

  @woozle 

Thanks, yeah that's what I have done, a little annoying as my previous Netgear allowed it but I can live with it.

Cheers