The maximum network segment length specified in 100base-tx standard is 100m. 100Base-TX meaning of each field: 100: indicates that the transmission rate is 100 mbit/s Base: indicates baseband transmission. T: means that the transmission medium is twisted pair (including UTP of Category 5 or STP of Category/kloc-0), and F means optical fiber. X: different standards at the same transmission rate (for example, there are two standards X or 4 under 100BASE-T). TX refers to two pairs of high-quality twisted-pair transmission media, one for sending data and the other for receiving data, and the maximum distance from the network node to the hub is no more than1100mm. ..