An automatic device stack configuration system includes a master stack unit coupled to a management device and member stack devices. The master stack device receives member stack device addresses from the management device, identifies a first subset of member stack device addresses received via its respective ports, and configures each of those respective ports as stack ports. The master stack device then transmits a second subset of member stack device addresses that were not received via its ports to the member stack devices associated with the first subset of member stack device addresses. When the master stack device receives identifications that ports on the member stack devices that received the second subset of the member stack device addresses have been configured as stack ports, it reboots the master stack device and member stack devices. Following the reboot, a stack including the master stack device and member stack devices is provided.