the values are - more or less - the same: MRTG/PRTG reports in BITs/sec, check_mk by default in BYTEs/sec. When you take the 181 kByte/s and multiply them by 8 you get the 1.5 mBIT/s.
Bit/Byte can be configured in WATO → Host & service parameters → Parameters for discovered/inventoried services → Netwrok interfaces and switch ports → param “Measurement unit”.
the values are - more or less - the same: MRTG/PRTG reports in BITs/sec, check_mk by default in BYTEs/sec. When you take the 181 kByte/s and multiply them by 8 you get the 1.5 mBIT/s.
Bit/Byte can be configured in WATO → Host & service parameters → Parameters for discovered/inventoried services → Netwrok interfaces and switch ports → param “Measurement unit”.