I need a way to visualize bandwidth utilization on each LIF or physical network port for a period of time (e.g. for the past 10 days). Is there an easy way to do so? I've seen other discussions about pushing the data to 3rd party tool or query the DB using PowerShell etc. but this is something basic that should be part of OnCommand solution.
Alternatively, if all you are after is network utilization you may check with your networking team to see how they are monitoring their network infrastructure. Network centric tools such as cacti may already have this data if the switches are being monitored.