NetBEUI

NetBEUI ( NetBIOS Extended User Interface ) - An advanced NetBIOS datagram transfer user interface. In the mid-1990s, it was widely used for small LANs , then TCP / IP was gradually supplanted.

The combined L3 / L4 protocol used as a broadcast mechanism for NetBIOS based broadcasts. This protocol is an implementation of the NetBIOS standard.

The transport part of NetBEUI is NBF ( NetBIOS Frame Protocol ). Now NetBIOS over TCP / IP (NBT) is usually used instead of NetBEUI, since NetBEUI on Windows has been discontinued since Windows 2003 . Samba (SMB file server for Unix) has only NBT implementation, not supporting either IPX or NetBEUI.

The NetBEUI protocol, because of its primitiveness, requires the least resources and provides the highest speed, but due to a number of its inherent disadvantages, such as the inability to route and strong noise in a large network, NetBEUI can be effectively used only in small local networks ( IBM developed the NetBEUI protocol for local networks containing about 20 - 200 workstations). Since NetBEUI is not routable, it does not allow the creation of wide area networks by combining several local area networks. NetBEUI-based networks are easy to implement, but difficult to extend because NetBEUI is not routable.