Maximum Transmission Unit Mtu Definition Standard Sizes

Maximum Transmission Unit (MTU)

The Maximum Transmission Unit ( MTU ) is the maximum amount of data that can be transmitted in a single packet over a network. It is measured in bytes and is determined by the underlying network technology.

The maximum transfer unit ( MTU ) specifies the maximum transmission size of an interface. A different MTU value might be specified for each interface that TCP/IP uses. The MTU is determined by negotiating with the lower-level driver. However, this value might be overridden.

What is MTU ? MTU ( Maximum Transmission Unit ) is the largest payload a single Ethernet frame can carry without fragmentation. The standard default is 1500 bytes. When people say "jumbo frames," they mean an MTU of 9000 bytes - six times the payload per packet. One thing to keep straight: MTU is not the total frame size .