Patent ID: 8595339

Claim:
A network management apparatus comprising: a hardware processor; a device connection management unit, under control of the processor, which receives an object identifier (OID) of a device connected to a network, the OID of the device having an OID root value, and determines whether to extend a predetermined management information base (MIB) according to whether the OID root value of the received OID is the same as a predetermined value; and a virtual MIB connection unit which, if the device connection management unit determines that the predetermined MIB is to be extended, creates an object in the predetermined MIB, creates a virtual object for the device under the object in the predetermined MIB, assigns a serial number to the virtual object for the device according to a time in which the device has been connected to the network, replaces the OID root value of the received OID of the device with the serial number and redefines the OID of the device according to the serial number, to thereby extend the predetermined MIB.