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| Token Ring |
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A local area network (LAN) access method developed by IBM. Conforming to the IEEE 802.5 standard, Token Ring uses a token ring access method and connects up to 255 nodes in a star topology at 4, 16 or 100 Mbps. All stations connect to a central wiring hub called the "Multistation Access Unit" (MAU) using twisted wire cable.
Different than Ethernet
The Token Ring MAU may be a central hub, but does not function like a shared Ethernet hub. The Token Ring method is more deterministic and ensures that all users get regular turns at transmitting their data. With Ethernet, all users compete to get onto the network.
Type 1 and Type 3
Type 1 Token Ring networks allow up to 255 stations per network and use shielded twisted pair wires with IBM style Type 1 connectors. Type 3 Token Rings allow up to 72 devices per network and use unshielded twisted pair (Category 3, 4 or 5) with RJ-45 connectors.
Like Ethernet, Token Ring is a data link protocol (MAC layer protocol) and functions at layers 1 and 2 of the OSI model. See data link protocol and OSI.
Token Ring uses a logical ring topology, which provides more equal opportunity for each station to gain access to the network than the broadcast method used by Ethernet. All nodes connect to the MAU.
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Entries before Token Ring
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token
token bus network
token passing
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Entries after Token Ring
Token Ring adapter
Token Ring connector
token ring network
TokenTalk
TOLED
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