From Net-SNMP Wiki

What MIBs are supported?

The following MIBs are supported (at least in part and on some systems):

• MIB-2 General network statistics
  (RFC 1213 and subsequent revisions)
• Host Resources (RFC 1514 and 2790)
• SNMPv3 framework (RFCs 2571-5, 3411-3418)
  (including USM, VACM, Target and Notification MIBs)
• DisMan Event and Schedule MIBs
• MTA-MIB (sendmail)
• private UCD/Net-SNMP agent extensions
  (monitor specified processes and disks, memory, CPU, load average, plus extending the agent using shell commands)

See README.agent-mibs for details.

Not all MIB modules are included by default on all systems, and some of these may need to be explicitly requested when the software is first configured and built. From Net-SNMP 5.3 and above, this primarily applies to the MTA-MIB of those listed above.

There are a few other MIB implementations distributed as part of the source tarball, but these are basically unsupported and most of the core developers have little or no experience with using them.

   FAQ:Agent
   

1. What MIBs are supported?
2. What protocols are supported?
3. How do I configure the agent?
4. How do I remove a MIB from the agent?
5. I've installed a new MIB file. Why can't I query it?
6. How do I add a MIB to the agent?
7. What's the difference between 'exec', 'sh' and 'pass'?
8. What's the difference between AgentX, SMUX and proxied SNMP?
9. What about 'dlmod' - what's that about?
10. Which should I use?
11. Can I use AgentX when running under Windows?
12. Can I use AgentX (or an embedded SNMP agent) in a threaded application?
13. How can I run AgentX with a different socket address?
14. How can I turn off SMUX support?
15. How can I combine two copies of the 'mib2' tree from separate subagents?
16. What traps are sent by the agent?
17. Where are these traps sent to?
18. How can I send a particular trap to selected destinations?
19. When I run the agent it runs and then quits without staying around. Why?
20. After a while the agent stops responding, and starts eating CPU time. Why?
21. How can I stop other people getting at my agent?
22. How can I listen on just one particular interface?
23. How do I configure access control?
24. I don't understand the new access control stuff - what does it mean?
25. How do I configure SNMPv3 users?
26. The 'createUser' line disappears when I start the agent. Why?
27. What's the difference between /var/net-snmp and /usr/local/share/snmp?
28. My new agent is ignoring the old snmpd.conf file. Why?
29. Why am I getting "Connection refused"?
30. Why can't I see values in the UCDavis 'extensible' or 'disk' trees?
31. Why can't I see values in the UCDavis 'memory' or 'vmstat' tree?
32. What do the CPU statistics mean - is this the load average?
33. How do I get percentage CPU utilization using ssCpuRawIdle?
34. What about multi-processor systems?
35. The speed/type of my network interfaces is wrong - how can I fix it?
36. The interface statistics for my subinterfaces are all zero - why?
37. Does the agent support the RMON-MIB?
38. What does "klread: bad address" mean?
39. What does "nlist err: wombat not found" (or similar) mean?
40. How about "Can't open /dev/kmem"?
41. The agent is complaining about 'snmpd.conf'. Where is this?
42. The system uptime (sysUpTime) returned is wrong!
43. Can the agent run multi-threaded?