MTU stands for Maximum Transmission Unit. In TCP/IP networking, this setting
defines how many bytes are in each packet that moves across the network. By
default, all PPP connections at speeds below 128K use an MTU of 576. At higher
speeds, Windows 98 uses an MTU of 1,500.To adjust these settings, open the
Network option in Control Panel, select Dial-Up Adapter, and click on the
Properties button. Click on the Advanced tab, and select the IP Packet Size
entry in the Property list. The Automatic setting shifts MTU size to match the
connection speed; choose Large to set MTU size to 1,500, Medium for 1,000, or
Small for 576.