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Repeater Statistics 5-11
Managing Ethernet MicroLAN Switches
Nothing The Percent Load function is not currently measuring
any statistics.
Frames (Blue)
Frames The total number of packets (both good and error)
processed by the selected repeater, board, or port.
Nothing The Frames scale is not currently measuring any
statistics.
Total Errors (Red)
Total Errors The total number of errors of any kind processed by the
selected repeater, board, or port.
Collisions The total number of collisions (combined transmit and
receive) detected by the selected repeater, board, or port.
CRC Errors The total number of packets with CRC (Cyclical
Redundancy Check) errors that the selected repeater,
board, or port has received from the network.
Runt Packets The number of runt packets detected by the selected
repeater, board, or port. A runt frame is one that is less
than the minimum Ethernet frame size of 64 bytes.
Giant Packets The number of giant packets detected by the selected
repeater, board, or port. A giant frame exceeds the
maximum Ethernet frame size of 1518 bytes (excluding
the preamble).
Algn. Errors The number of misaligned packets detected by the
selected repeater, board, or port. Misaligned packets are
those which contain a non-integral number of bytes; they
can result from a MAC layer packet formation problem,
or from a cabling problem that is corrupting or losing
data. Alignment errors are also known as framing errors.
OOW Collns. The number of collisions out of the standard collision
window (51.2 µs) experienced by the selected repeater,
board, or port. There are two conditions which can cause
this type of error to occur: either the networkÕs physical
length exceeds IEEE 802.3 speciÞcations, or a node on the
net is transmitting without Þrst listening for carrier sense
(and beginning its illegal transmission more than 51.2 µs
after the Þrst station began transmitting).
Nothing The Errors scale is not currently monitoring error
packets.