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Concentrator Configuration 6-3
FDDI Applications
Figure 6-2. The Concentrator ConÞguration Window
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. As described
by the FDDI Station Management (SMT) Draft Proposed American National
Standard, RMT occurs on a per-MAC basis and aids in the detection and
resolution of failures, such as stuck beaconing and the presence of duplicate
addresses.
Not Available There 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.
Ring-Op The ring is functioning normally. While in this state, the
MAC being managed is part of an operational FDDI ring.
Isolated 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.
Non-Op The MAC being managed by the selected SMT is
participating in ring recovery; the ring is not operational.
Detect The claim (beacon) process of the FDDI ring protocol has
exceeded one second. There may be a problem on the
ring; any duplicate address conditions are being
detected. In this state, the ring is still alive, but no data is
being transmitted.