Send an L2CAP echo request and receive an answer. More information: https://manned.org/l2ping.
sudo l2ping mac_address
sudo l2ping -r mac_address
sudo l2ping -i hci0 mac_address
sudo l2ping -s byte_count mac_address
sudo l2ping -f mac_address
sudo l2ping -c amount mac_address
sudo l2ping -d seconds mac_address