We have Cisco-C2960S with a 10G uplink. Our normal usage is between 1000 Mbps to 2000 Mbps depending on the time of day. Occasionally SNMP Traffic sensor graph shows odd value of up to 4000 Mbps. This should not be possible this is a VPN tunnel that can only go up to 2000 Mbps. In fact I saw it happen on every Cisco-C2960S switch we have deployed.
I'm trying to understand if PRTG for some reason interprets values coming for Cisco the wrong way or our Cisco has an issue with values it sends.