Each device is assigned an IP address from the Gateway's DHCP server. When a device leaves, is turned off, or the lease time of the address expires, then the IP address becomes available.
If you want to run a service on a network device, such as a web server or network printer, then we recommend assigning a static IP to the device.
Your Static IP address is located in your Cox Business MyAccount.
Do not change the WAN Network Mode field.