I am currently managing a large datacenter spine-and-leaf topology. On our leafs, we use stacked 3750-X switches.
I want to know how much bandwidth is currently going across the stack links (currently 6 switches in the stack, about to be 8). We currently use 10GB uplinks to our spine using a SM module (only two links currently up to the spine from different switches in the stack). I can look at the total available bandwidth (which is 32Gbps) but not what is being used. I tried to graph the stack links in Cacti but nothing is showing up using the standard graphs.
Is there a way to tell current bandwidth or dropped frames due to oversubscription? Can I graph this is Cacti to monitor for a period of time to tell peak usage?
Not finding much information on Google right now, thanks.