Port Statistics 6-3Port StatisticsWith the Switch Management screen displayed,choose the management level Port, then select theSTATISTICS button. The Port Statistics screen is dis-played, as shown in Figure 6-2. As well as showingstatistics for the port, the Port Statistics screenallows you access to traffic and error counterscreens.If the port is an ATM OC-3c Module port, the ATMPort Statistics screen is displayed. For more informa-tion, refer to the “SuperStack ® II Switch ATMOC-3c Module User Guide”.The Port Statistics screen shows the following:Port ID The ID of the port you are currently manag-ing.Bandwidth Used This counter provides a runningaverage of the bandwidth used by the port,expressed as a percentage of the maximum band-width available for the port. A sampling period ofone minute is used. The value gives an indication ofthe general traffic level of the network. A high utili-zation for single endstation segments is an indica-tion that your network is operating efficiently.However, if multiple endstations are connected tothis port and you see values of around 40% youshould reconsider the topology of your networkbecause each user will see degraded network per-formance.Figure 6-2 Port Statistics screenFrames Forwarded This counter provides a runningaverage of the proportion of frames received by theport that are forwarded, expressed as a percentageof all frames received by the port. A samplingperiod of one minute is used.Broadcast Frame Bandwidth This counter providesa running average of the broadcast frame band-width used by the port, expressed as a percentageof the maximum bandwidth available for the port. Asampling period of five seconds is used.Error Frames This counter provides a running aver-age of the number of errors per 10,000 framesreceived by the port, expressed as a percentage.Refer to the field description for Errors on page 6-5.TRAFFIC STATISTICS Select this button to accesstraffic counters for this port.ERROR ANALYSIS Select this button to accesserror counters for this port.
