I just updated the MIB file on my web server, because our upgrade to NPM 12.3 was not done on-line so the MIB file was only updated to 5/3/18, but now it is updated to 3/29/19. I was hoping that this would help with some of our devices using the snmp V3 protocol, but so far on the few I've tried, the updated MIB file doesn't seem to have made a difference. Since most of my unknown devices are CISCO devices, why hasn't updating the MIB helped?