I've got a client who is attempting to use the Duplex Mismatch detection that's available in NPM 11.5.1 and for some reason it doesn't seem to work/alert. The proper interfaces are monitored and the alert is enabled but when we initiate a duplex mismatch it just doesn't pop up. For example we hard coded a workstation to 100/hdx and the switch port to 100/fdx. If I drill down into the interface on the switch (which is monitored via NPM) it acknowledges the half duplex (hdx) but still no warning. Am I doing something wrong?
