I can check it on PI 2.x where Interface Rx and Tx utilization is available per interface basis on graph as per either octet or Percent basis:
This is under Operate > Monitoring Dashboards > Detail Dashboards > Interface. As it is a dashlet, unfortunately you can't export it.
I am not aware of other places, may be other community members can share from their experience.
-Thanks
Vinod
-Thanks
Vinod
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