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token ring

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token ring

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Also known as IEEE 802.5

technology developed by IBM for local area networks

~19 min read

Encyclopedic overview

Two examples of Token Ring networks: a) Using a single MAU b) Using several MAUs connected to each other Token Ring network Token Ring network: operation of an MAU explained IBM hermaphroditic connector with locking clip. Screen contacts are prominently visible, gold-plated signal contacts less so.

Token Ring is a physical and data link layer computer networking technology used to build local area networks. It was introduced by IBM in 1984, and standardized in 1989 as IEEE 802.5. It uses a special three-byte frame called a token that is passed around a logical ring of workstations or servers. This token passing is a channel access method providing fair access for all stations, and eliminating the collisions of contention-based access methods.

Excerpted from Wikipedia’s “token ring” article, available under the CC BY-SA 4.0 licence.

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