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Network Performance Baselining by Daniel Nassar

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Chapter 9. Token Ring and Switched Environments

The Token Ring architecture was developed in the early 1980s. Throughout the early phases of development, many companies participated in the evaluation of different design and circuitry possibilities for a LAN based on the deterministic operation. The Token Ring topology was created and released by IBM and Texas Instruments, although other companies, such as Madge, were also directly involved in the final evolution of the design.

In 1985, the Institute of Electrical and Electronic Engineers (IEEE) released the 802.5 design specification for the Token Ring LAN. The Token Ring topology is designed as a physical star, but is called a logical ring. Various devices connect across an electrical ring that ...

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