If you replace a failed Sensor with the same model Sensor (for example, replace an NS5100 with another NS5100), you need only install the new Sensor and configure it with the same information as the failed Sensor.
Remove the failed Sensor. You must turn it off, unplug it from its electrical source, unplug its cables, and remove it from its rack mounting.
Mount the new Sensor in the rack.
Follow the entire configuration process. See the section Configuring the Sensor in Trellix Intrusion Prevention System Intstallation Guide. Make sure to configure the Sensor with the same name and shared key as the failed Sensor. (You can reuse the name of the failed Sensor; however, the name must be unique to the Sensor. The Manager will not recognize two active Sensors with the same name.)
Note
The new Sensor does not need to have the same IP address and can reside on a different network. (If the Sensor is on a different network from the Manager, you must set the gateway IP address, and you may need to configure the Management port's speed and determine whether it is full-duplex or half-duplex.) See the Manager Administration section for more details.
For a standalone Sensor, go to Devices → <Admin Domain Name> → Devices → <Device Name> → Maintenance → Reboot.
For Sensors in a stack, go to Devices → <Admin Domain Name> → Devices → <Device Name> → Member Sensors → <Stackname-node id> → Maintenance → Reboot.
Click Reboot Now.
Note
You can also perform Sensor reboot from Devices → <Admin Domain Name> → Global → Device Manager. Select the required Sensor and click Reboot from Other Actions drop-down.
The Sensor restarts and is ready for operations once it comes up.