I would like to ask you a question .i am using solarwind monitoring tool for bandwith monioring.
I would like to know which interface we should use for monitoring ? Physical interface or tunnel interface .
I am using GRE tunnel in each of my remote locations.
and in some locations when i compare my physical interface graph and tunnel interface graph ,there is always hugh difference ,tunnel interface always has high utilization. but for some sides physical interface and tunnel interface graph are same .
please do let me know which is the best for monitoing .