...
You will be prompted to MFA since this is considered an off-campus network. If the registered device is the same as the one being used to login, the Duo app will notify & prompt for confirmation and users can confirm access the usual way. Alternatively, a secondary device can also be used to confirm the MFA.
MFA Device Management
How do I add a new device or manage an existing one?
Please refer to the MFA Self-Service Guides for instructions on managing devices and enrolling/registering a new phone, tablet, desk phone.
What happens if I upgrade or replace my phone with the same number?
If you have a new phone with the same number, it can be activated using the steps as before. See the section on MFA Self-Service for directions on how to enable the mobile app and activate MFA Service.