Cisco Firepower 1120 - Static IP

[Exor]

Hello everyone, I became a System Administrator for a company that manages IT things including Firepower. ATT and I worked together last week to replace their modem.

After replacing modem, the port on Firepower that is connected to modem (GE1/1) kept trying to get the old WAN IP that was in the old modem. I tried to find an option to change the static IP for that port so that it will obtain the correct WAN IP that is usable from the new modem.

I have CCNA cert so I know more about switches and L3 but I don't know much about Firepower. I recently learned that Firepower uses "scope" instead of "configure terminal". I am still unable to find the static IP that is already set to the port.

Do you know where it may be located in? Thank you!

[Exor]

Hello, I am working on it right now. When I set it to static IP, it shows down in both link and protocol. And when I set it to DHCP, it is still trying to retrieve the old wan IP. Both were deployed.

[Exor]

The Firepower kept getting the same old WAN IP turned out was inaccurate ip address information in the ATT's system. They had to fix it and we were finally getting internet access, but everything couldn't resolve hostname. ATT disabled the firewall inside the modem. Everything's working. I was able to use deploy as well. Thank you so much for assistance!