is short for maximum transmit unit, which represents the length of an L3 packet or IP data packet. is short for Maximum Received Unit, which represents the maximum frame which can be received on the link.  is short for maximum frame length, which represents the length of an L2 packet or Ethernet MAC frame. To better explain, let’s look at the structure of an Ethernet frame:   From the diagram, we can see that: – The IP data packet ranges from 46 bytes to 1500 bytes. So the MTU is 1500 bytes. – The Ethernet MAC frame ranges from 64 … Continue reading Jumbo, MTU and MFL