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LOCAL MANAGEMENT
4-25
KBytes Received
This field displays the sum in kilobytes of frames received by the
MicroMMAC-T.
Errors Received
This field displays the Isolating and Non-Isolating Errors (described
below) detected on the ring.
Beacon States
This field displays the beacon conditions detected on the ring. Stations
transmit beacons when they detect bit streaming or signal loss on the ring.
Ring Purges
This field displays the ring purge frames transmitted by the active monitor.
Active Monitor Changes
This field displays the number of times the active monitor has changed.
ISOLATING ERRORS
Isolating Errors are “soft” ring errors that indicate the domain of a fault.
That is, the active monitor can isolate the fault’s region to the transmitting
adapter, the receiving adapter, the cable, and the components between
them. The errors are described below:
Line Errors
This field displays the total line errors detected on the ring. Line Errors are
corrupted frames that are detected by a node. This type of error normally
occurs when stations enter and leave the ring.
This error can also indicate a problem with the receiver of the reporting
node, or the transmitter of its Nearest Active Upstream Neighbor (NAUN),
or the cabling and hub hardware between them.
Burst Errors
This field displays the total burst errors detected on the ring. Burst Errors
are the absence of clocking signals at a node’s receiver. This error normally