The sniffer command console filled with sniffer log messages
Using iDrac to access the APM sniffer command console, for some reasons it was filled with sniffer log messages so it seemed not able to get to its setup menu. The attached screen shot is what was showing on the screen.
Just like a Linux box, there could be varous screen consoles that can be swapped by pressing alt-Fx.
Press "Alt-F1" swapped the console back to its normal logon screen.