Information Technology Reference
In-Depth Information
Table5-2
show interfaces fddi Field Descriptions (continued)
Field
Description
CFM is...
Contains information about the current state of the MAC
connection. The configuration management state can be
one of the following:
isolated
—MAC is not attached to any Physical type.
•
wrap_a
—MAC is attached to Physical A. Data is
received on Physical A and transmitted on Physical
A.
•
wrap_b
—MAC is attached to Physical B. Data is
received on Physical B and transmitted on Physical
B.
•
wrap_s
—MAC is attached to Physical S. Data is
received on Physical S and transmitted on Physical S.
This is the normal mode for a SAS.
•
— is...
— (ring management) is the SMT MAC-related state
machine. The — state can be one of the following:
•
isolated
—MAC is not trying to participate in the
ring. This is the initial state.
•
non_op
—MAC is participating in ring recovery, and
ring is not operational.
•
ring_op
—MAC is participating in an operational
ring. This is the normal state while the MAC is
connected to the ring.
•
detect
—Ring has been nonoperational for longer
than normal. Duplicate address conditions are being
checked.
•
non_op_dup
—Indications have been received that
the address of the MAC is a duplicate of another
MAC on the ring. Ring is not operational.
•
ring_op_dup
—Indications have been received that
the address of the MAC is a duplicate of another
MAC on the ring. Ring is operational in this state.
•
directed
—MAC is sending beacon frames notifying
the ring of the stuck condition.
•
trace
—Trace has been initiated by this MAC, and the
— state machine is waiting for its completion before
starting an internal path test.
token rotation
Token rotation value is the default or configured rotation
value as determined by the
fddi token-rotation-time
command. This value is used by all stations on the ring.
The default is 5,000 microseconds. For FDDI full-duplex,
this indicates the value in use prior to entering full-duplex
operation.
negotiated
Actual (negotiated) target token rotation time.
