ISY-99i/ISY-26 INSTEON:Assign a Static IP Address

From Universal Devices, Inc. Wiki

Assigning a Static IP Address For Your ISY

  • If you have access to ISY Admin Console, simply go to Admin Console | Configuration tab | Network and assign static values. Otherwise:
  1. Telnet to ISY Telnet To Your ISY
  2. Login using your ISY credentials
  3. Issue "CT" command (case sensitive - all UPPERCASE)
  4. Follow the instructions on the screen to enter
    • IP Address (example
    • Netmask (usually
    • Gateway (usually the IP address of your router, example
    • DNS (usually the IP address of your router, example

Please note that all the commands in the shell are in UPPERCASE.

Many routers start DHCP addresses at a higher range such as static addresses so these need to be avoided

To assign the ISY a dynamic IP (assigned by a DHCP server), set the IP address to

ISY-26 INSTEON / ISY-99i Series INSTEON : How-To Guide