SNMP (MIB, Polling/Trap, Message)
puchi-engineerSNMP (MIB: Management Information Base)
Network devices that support SNMP have a database that stores management information about network devices called MIB (Management Information Base).
Each piece of management information stored in the MIB is called an object, and each object has a unique OID (Object Identifier) to uniquely identify the management information.
MIB objects are managed in a hierarchical structure as shown below.
OIDs are expressed as numbers separated by periods.
For example, sysDescr, which means a description string about the device, is ".1.3.6.1.2.1.1", and sysContact, which means the information of the node administrator, is ".1.3.6.1.2.1.4". express.
The agent notifies MIB information in response to a request from the manager, and no