MIBs and Traps
MIBs are either standard or enterprise-specific. Standard MIBs are created by the IETF and documented in various RFCs. A trap reports significant events occurring on a network device, most often errors or failures. SNMP traps are defined in either standard or enterprise-specific MIBs. Standard traps are created by the IETF and documented in various RFCs. SNMP traps are compiled into the ASA software.
If needed, you can also download RFCs, standard MIBs, and standard traps from the following locations:
Browse the SNMP Object Navigator to look up Cisco MIBs, traps, and OIDs from the following location:
https://snmp.cloudapps.cisco.com/Support/SNMP/do/BrowseOID.do?local=en
In addition, download Cisco OIDs by FTP from the following location: