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-- About Token Ring --
Token Ring is a networking technology that uses a token to pass information around the network. A network using Token Ring
is configured in a ring topology where each computer or node is connected to it's neighbors to the left and right. This
forms a logical ring and allows the token to be passed from one computer to the next. Computers with something to transmit
over the network must wait for possession of the token to send the information. Token Ring techology was popularized in the
mid 1980's by IBM but has since become rarely used. The token ring technology is shared by ARCNET, token bus, and Fiber
Distributed Data Interface, or FDDI. Ethernet has become the worlds main networking technology since it offered faster
transmission speeds and cheaper equipment.
What does a Token Ring cable look like?
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- IEEE 802.5 specifies Token Ring Standards
- "Token ring LAN speeds of 4 Mbit/s and 16 Mbit/s were standardized by the IEEE 802.5 working group. An increase to
100 Mbit/s was standardized and marketed during the wane of token ring's existence while a 1000 Mbit/s speed was actually
approved in 2001, but no products were ever brought to market."
- "Token Ring and IEEE 802.5 support two basic frame types: tokens and data/command frames. Tokens are 3 bytes in
length and consist of a start delimiter, an access control byte, and an end delimiter. Data/command frames vary in size,
depending on the size of the Information field. Data frames carry information for upper-layer protocols, while command
frames contain control information and have no data for upper-layer protocols."
was used as a source for this information. Thank you
to all those who contributed to it.