Maximum Transmission Unit (MTU)

Also known as: MTU Jumbo Frames

A maximum transmission unit (MTU) is the largest packet or frame size, specified in octets (eight-bit bytes) that can be sent in a packet or frame-based network such as the internet. The internet’s transmission control protocol (TCP) uses the MTU to determine the maximum size of each packet in any transmission. MTU is usually associated with the Ethernet protocol, where a 1500-byte packet is the largest allowed in it (and hence over most of the internet).

Jumbo Frames - Some networks allow for packet sizes that are greater than 1500 bytes. These are called “jumbo frames”.