Whenever, I want to get the firmware & driver details of my physical network interface card in the ESXi I use below command.
root@my_host.me.local:~> esxcli network nic get -n vmnic0
Advertised Auto Negotiation: true
Advertised Link Modes: Auto
Auto Negotiation: false
Cable Type: FIBRE Current Message Level: 0
Driver Info:
Bus Info: 0000:06:00:0
Driver: qfle3
Firmware Version: FW: 7.13.109.0 BC: 7.15.24 Version: 1.0.69.0
@Version: 1.0.69.0
I am interested in knowing the significance of BC version over there in the line where there is Firmware version mention.