SNMP OID: How to find the firmware version of a cisco switch from MIB

Question

I am looking for a OID to get the firmware version of a Cisco Switch using SNMP.

I tried the below MIB files, i couldn't.

OLD-CISCO-CHASSIS-MIB.mib
ENTITY-MIB.my
CISCO-ENTITY-ASSET-MIB

Do anybody know the OID, if so, kindly post me. Thanks

Answer 1

Probably you already did that but try querying the sysDescr OID. Usually it contains model number and software information.