If you are not able to run the management GUI because you do not know the management IP address, you can retrieve the management IP address. To do so, follow the procedure in Initializing the system by using the technician port.
The management IP address is set when the clustered system is created. An address for port 2 can be added after the clustered system is created.
The management IP address is part of the data that is shown in the service assistant home panel or the data that is returned by the USB flash drive.