What is the maximum transmission unit?

The Maximum Transmission Unit (MTU) is the largest size of a packet that can be transmitted over a network protocol. It is measured in bytes and varies depending on the network technology; for example, Ethernet typically has an MTU of 1500 bytes. Setting the MTU correctly is crucial for optimizing network performance and avoiding fragmentation, which can lead to inefficiencies and increased latency. Adjusting the MTU can help improve the reliability and speed of data transmission across different types of networks.