Hello,

CHR 6.44.2
PRTG Network Monitor SNMP Traffic sensor

When i copy file via gigabit adapter, SNMP sensor show only 430 Mbit/s

This is a bug in Mikrotik SNMP or in PRTG?

Try to read that info with something like iReasoning MiB Browser and see what data you get. If you get the correct data, than it is a MRTG issue.

I monitor Mikrotik SNMP with 3 other softwares and everything works very well!