Abstract
A token-passing mechanism allows orderly access to a network. Apart from Token Ring the most commonly used token-passing network is the Fiber Distributed Data Interchange (FDDI) standard. This operates at 100 Mbps and, to overcome the problems of line breaks, has two concentric Token Rings, as illustrated in Figure 41.1. Fiber optic cables have a much high-specification than copper cables and allow extremely long connections. The maximum circumference of the ring is 100 km (62 miles), with a maximum 2 km between stations (FDDI nodes are also known as stations). It is thus an excellent mechanism for connecting networks across a city or over a campus. Up to 500 stations can connect to each ring with a maximum of 1000 stations for the complete network. Each station connected to the FDDI highway can be a normal station or a bridge to a conventional local area network, such as Ethernet or Token Ring.
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© 1999 Springer Science+Business Media Dordrecht
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Buchanan, B. (1999). FDDI. In: Handbook of Data Communications and Networks. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-0905-6_41
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DOI: https://doi.org/10.1007/978-1-4757-0905-6_41
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4757-0907-0
Online ISBN: 978-1-4757-0905-6
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