IBM 689912U Hardware Maintenance Manual - Page 23

Token-Ring Table Terms and Definitions Auto-removal Beaconing Hard error Initialization Open Wire fault The state in which a token-ring adapter port removes itself from the network to perform self-tests to verify that it is not the cause of a hard error. If the tests are successful, the port will reattach itself to the network. The state that a token-ring adapter port enters after it has detected a hard error. The error condition is reported to the other devices on the network. Beaconing can result in the port removing itself from the network (auto-removal) to determine whether it is the cause of the hard error. An error condition on a network that requires removing the source of the error or reconfiguring the network before the network can resume reliable operation. The first step taken to prepare the port for use after the computer has been booted. During initialization, the port runs a series of internal self-diagnostic tests. The state in which the port has established connection with other devices on the ring. An error condition caused by a break or short circuit in the cable segment that connects the port to its access unit, such as an IBM 8230 Token-Ring Network Controller Access Unit. Service Information 13