For some network scenarios, users may get confused why the management Ethernet ports cannot be shut off (totally Down) when operation system was OFF.
Everyone who needs to understand why the management Ethernet ports keeps on when it's connected.
The rule can be applied for most of Advantech products which have BMC inside
- The management Ethernet chip was powered by standby power , means when the system was powered off , the chip for Management purpose still keeps the power fed.
- For system which is having management Ethernet ports, there's BMC inside. The side band channel of Ethernet chipset redirect the traffic to BMC device, so the ports must keep on for the manageability on the system.