
Using Technician Interface Scripts
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Sample Display – show fddi mac
FDDI Modules MAC Parameters:
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Upstream Downstream TNeg Ring Mgmt Ring Op
Slot Conn Circuit Neighbor Neighbor (ms) State Count
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0 entries in table.
Ring Mgmt State State of the Ring Management (RMT) within SMT. RMT reports the status of
the MAC, including stuck beacon conditions. It initializes the trace function,
and detects duplicate address conditions that prevent the ring from operating.
RMT passes through a variety of states as follows:
• Isolated – Initial state of RMT.
• NonOp – MAC being managed is participating in ring recovery and the ring
is not operational.
• RingOp – MAC being managed is part of an operational FDDI ring.
• Detect – Ring has not been operational for a certain period of time. In this
state, RMT detects duplicate addresses, a condition that prevents ring
operation.
• NonOpDup – TMAC under control is a duplicate of another MAC on the
ring. The ring is not operational in this state.
• RingOpDup – MAC under control is a duplicate of another MAC on the
ring. The ring is operational in this state.
• Directed – RMT has instructed the MAC it is controlling to send beacon
frames notifying the ring of a stuck condition. Beacon frames indicate that
the interface doesn’t see the token and that this condition should be
transient. If this state persists, contact your customer service representative.
• Trace – RMT has initiated the trace function.
Ring Op Count Number of times the ring has entered the “Ring Operational” state from the
“Ring Not Operational” state. This count is updated when there is a change in
the state, but does not have to be exact.
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