When performing an SNMP sync, I get the following errors if the appropriate MIBs are installed on the server. I have these installed for other applications also located on the server. Server is Debian Lenny and the mibs are installed in /usr/share/snmp/mibs With just the CISCO-SMI-V1SMI.my installed: Unknown OID 'OID: CISCO-SMI::ciscoProducts.696' With the above and CISCO-PRODUCTS-MIB-V1SMI.my installed: Unknown OID 'OID: CISCO-PRODUCTS-MIB::catalyst2960G24' (Side note: I had to restart Apache after I moved a MIB in or out for that change to register within RT. Not a bug... just an FYI) I also made a temporary change in RackTables' snmp.php just for testing: I stuck this at the very top to ignore the translated MIB output and just show the numeric OID. This seems to me like the more sane way to go. Unless, of course, this breaks other snmp checks within RT. snmp_set_oid_output_format(SNMP_OID_OUTPUT_NUMERIC); Unknown OID 'OID: .1.3.6.1.4.1.9.1.696' So, if I pull out my MIBs(and the test code), RT works just fine. But, IMO, there should be a way to either ignore the system MIBs or, better yet, accept a full OID value.