If you do not wish to use the default MGT IP of 192.168.1.1 with your new Palo Alto Networks device, you can set it via the command line interface (CLI) by following these couple steps:
Connect to the console port using the standard 9600 8-N-1.
At the login prompt use admin/admin as the default credentials:
PA-220 login: admin Password: admin@PA-220>
Enter configuration mode:
admin@PA-220> configure Entering configuration mode [edit] admin@PA-220#
Set the IP, gateway and DNS server:
admin@PA-220# set deviceconfig system ip-address 10.0.0.2 netmask 255.255.255.0 default-gateway 10.0.0.1 dns-setting servers primary 8.8.8.8
Then simply commit and you’re done.