Managing Ethernet MicroLAN Switches
5-10 Repeater Statistics
2. Click on Performance Graph. The port-level Performance Graph window
opens.
The Board and Port Performance Graph windows are similar to the Repeater
Performance Graph window displayed in Figure5-4, except that they display
statistics applicable to the board or port level.
For each chosen statistic, Performance Graphs display both average and peak
activity, as well as the date and time the peak values were recorded; average
values are also displayed graphically.
The Average statistics are updated every two seconds, as averaged over the
previous four two-second intervals; the graphical display also updates at
two-second intervals. For the first 60 seconds of graphing, you will note the graph
lines extending as each interval’s data is added to the graph. Once the first 60
seconds has passed, the newest data is added at the right edge of the graph, and
the oldest data is scrolled off to the left.
Each Performance Graph window allows you to graph the following statistical
variables:
Percent Load (Green)
Percent Load Reflects the network load generated by the selected
repeater, board, or port, compared to the theoretical
maximum load (10 Mbits/s) of an Ethernet network.
Active Users The number of users transmitting or receiving on the
selected repeater, board, or port, as determined by the
current number of Ethernet (MAC) addresses stored in
each port’s Source Address Table.
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.