I have a customer that set up SNMP polling with SolarWinds. The MIB file is available in the MCD software package that you load on the machine you install software from in the /mibs folder. Be careful how much detail and how frequently you poll, when this customer first set it up it was bogging down the SNMP agent on the 3300 which led to very slow poll responses and they had to dial back on the frequency and level of detail.