FTD Configuration Reset

I recently run into an issue that I needed to clear the configuration on a FTD 2100 series .

The steps followed are

1. Remove the FTD from FMC
2. SSH to FTD 
3. configure manager delete
4. You will be prompted to reset the configuration, choose yes
5.  configure firewall transparent
6.  Check configuration is clear and..
7. configure firewall routed

Now you have a FTD with clear configuration.


Another way is to connect to FTD and run the following

1. connect local-mgmt
2. erase configuration

This will reset the configuration and you have to go through the setup again after you reboot the device. Keep in mind that FTD instance will be reinstalled after that.