I am trying ot understand Ngenius now I have it running with a switch and i can not get it to do packet captures or moniotor and layer 3 activity its all greyed out. Do you need a probe to monitor a network on the layer 3 level. I'm lost I can only see the span port that I have enabled on the seitch please someone give me a clue because the doucmentation is awful.
Yes, in order to view Network/Application Layer data and do Packet Capture, you must have a NAM or a Probe. Without it, for switches you'll only get mini-rmon data. Data Link Layer graphs only and no Packet Capture.