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4.4] What is the difference between a MAU, a CAU, and a LAM? (Token Ring Physical Layer)
Description
This article is from the Token Ring FAQ, by James Messer James@NetworkUptime.com with numerous contributions by others.
4.4] What is the difference between a MAU, a CAU, and a LAM? (Token Ring Physical Layer)
A MAU is a 8228 Multistation Access Unit. This unit provides eight
workstation connectors and 2 MAU ports (also called Ring In/Ring Out
ports).
A CAU is a 8230 Controlled Access Unit (Basically a MAU with
intelligence). A CAU supports up to four LAMs. The Ring In/Ring Out
ports of a CAU are copper, but can replaced with fiber connectors.
A LAM is a Lobe Attachment Module for the 8230. Each LAM supports 20
workstations.
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