You can try to get the mib file from this link.
ftp://ftp.cisco.com/pub/mibs/supportlists/ucs/ucs-C-supportlist.html
楼主可以参考一下下面的帖子讨论
Hardware Monitoring for Cisco UCS C240 M3 Rack Servers
https://thwack.solarwinds.com/product-forums/network-performance-monitor-npm/i/feature-requests/hardware-monitoring-for-cisco-ucs-c240-m3-rack-servers