which tools or command i could use to check all my traffic in/out from my interface, i have a router with an interface 100 mbits with 10 Sub-interface hanging on it, i would like to measure how many traffic is passing throught it and if i also need to separate the traffic or even change my router for one with Gigabit interface.
Set up snmp on the switch and use software like cacti or observium. You will get nice graphs this way.
If you want more detailed data on where traffic is actually being routed look for netflow.
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