
FDDI Applications
The FDDI ConÞguration window displays the following Þelds:
MAC State
This Þeld indicates the current state of the MAC on the FDDI ring associated with the selected SMT entity. The RMT component of SMT monitors MAC operation and takes actions necessary to aid in achieving an operational ring. RMT occurs on a
¥Not AvailableÑthere is no MAC on the FDDI ring associated with this SMT entity, or the selected SMT entity is not attached to the main ring through the backplane FNB A and B ports.
¥
¥IsolatedÑthe SMT has just initialized RMT or RMT has entered this state during a path test (trace) after ring beaconing; RMT is not aware of the ring path or state.
¥
¥DetectÑthe claim (beacon) process of the FDDI ring protocol has exceeded one second. In this state, the ring is still alive, but no data is being transmitted. This may indicate a problem on the ring, including the detection of duplicate address conditions.
¥
¥
¥DirectedÑthe beacon process did not complete within 7 seconds. The selected SMT has directed the controlled MAC to send beacon frames to notify the other stations that a serious problem exists on the ring, and a Trace state is soon to follow.
¥TraceÑa problem exists on the ring which could not be corrected during the beaconing process, and a Trace has been initiated. During a Trace (or Path Test), the SMT sends a signal that forces its nearest upstream neighbor to remove from the ring and conduct a
The Configuration Window |