Intrinsic HA
This mode is always in effect. The device will automatically switch to Layer-2 Fallback when a failure is detected. This window allows the user to immediately force the device into Normal or Layer-2 Fallback mode.
Normal
Device inspects and handles traffic according to its current Threat Suppression Engine (TSE) settings.
Layer-2 Fallback
Each segment on the device permits all traffic or blocks all traffic according to its configured fallback settings.