Optimizer Link Local Address (Default IP)

 Link-local addressing 

• If a DHCP server is not found, the controller will switch to Auto IP mode, in which it follows link-local addressing for address resolution. 
• It will acquire an IP address in the range 169.254.1.0 - 169.254.254.254. The controller will use the last two characters of its serial number as the last octet for starting address search. For example, if the serial number ends with 36 (Conversion HexToDec = 54), the IP address is set to 169.254.1.54). 
• If the controller has link-local addressing, the controller will periodically (every 1 minute) search for the DHCP server. If a server is found, the controller will acquire a new IP address from the server and start using it immediately.  

Subnet must be set to 255.255.0.0