(1) A type of computer network in which all the computers are arranged (schematically) in a circle. A token, which is a special bit pattern, travels around the circle. To send a message, a computer catches the token, attaches a message to it, and then lets it continue to travel around the network.
(2) When capitalized, Token Ring refers to the PC network architecture developed by IBM. The IBM Token-Ring specification has been standardized by the IEEE as the IEEE 802.5standard.
Interactive Token-Ring Network Troubleshooting Start from a page of common network symptoms and work your way through tests and results until you arrive at a solution that solves your problem.
Token Ring/IEEE 802.5 This pdf looks at the history of Token Ring and explains how it works.