# l2ping > Send an L2CAP echo request and receive an answer. > More information: . - Ping a Bluetooth device: `sudo l2ping {{mac_address}}` - Reverse ping a Bluetooth device: `sudo l2ping -r {{mac_address}}` - Ping a Bluetooth device from a specified interface: `sudo l2ping -i {{hci0}} {{mac_address}}` - Ping Bluetooth device with a specified sized data package: `sudo l2ping -s {{byte_count}} {{mac_address}}` - Ping flood a Bluetooth device: `sudo l2ping -f {{mac_address}}` - Ping a Bluetooth device a specified amount of times: `sudo l2ping -c {{amount}} {{mac_address}}` - Ping a Bluetooth device with a specified delay between requests: `sudo l2ping -d {{seconds}} {{mac_address}}`