I am trying to monitor ports on a Cisco Small Business SG300 switch with SNMPv3. I receive an error "SNMPERR_AUTHENTICATION_FAILURE (SNMP error # -35)" on some of the ports but not always. Like right now port gigabitethernet24 is giving this error, but it will then report up with kbit/s. A few minutes later it will then say down with the "SNMPERR_AUTHENTICATION_FAILURE (SNMP error # -35)". I have tried changing the delay. I have deleted the snmp user on the Cisco switch and recreated it. I am also trying to use the SNMP system time up sensor, which is experiencing the same behavior as the port sensors.
Any help will be appreciated
Thank you Joe