8-20DuraLAN Fast Ethernet NICs User’s GuideWindows NT Performance MonitorYou can view system traffic for selected groups and stand-aloneports in the Performance Monitor, as shown in Figure 8-18. In thiswindow, each line represents the performance of the group or portlisted at the bottom of the screen. When a group/port’s activitydrops, its line drops. Use the following instructions to select portsand groups you wish to view.1 From the Start menu, point to Programs, point toAdministrative Tools, and then click Performance Monitor.Figure 8-18. Performance Monitor2 In the Performance Monitor, click the Add counter button toenter the Add to Chart window, shown in Figure 8-19.Add Counter