It is a 100 Mbps voice grade local area network. It is defined by IEEE as 802.12. 100VG-AnyLAN uses a centrally controlled access method referred to as Demand Priority. This access method is a simple, deterministic request method that maximizes network efficiency by eliminating network collisions and token rotation delays. 10BASE-T. Therefore, it is more efficient.
Repeater acts like a central network controller.
End node is like a computer or workstation or bridge. It functions for exchanging data via the repeater. The basic structure of 100VG-AnyLAN is shown below. It is divided into several layers. Each layer has its own function which will be described below.