This depends on which gateway you are using and which port. When the Niagara port is loaded on, all factory settings of the IP ports are not modified.
For the 5000 series, both ports are set for DHCP.
For the 3001 there is only one port and is set for DHCP.
For the 3002 port 1 is set for DHCP and port 2 is set for 192.168.2.1
For the 3003 there is one port and it is set for 192.168.2.1