Abstract: A data storage device includes a CMIP application component which receives data on network objects using the CMIP protocol from the network manager of a main network. For each attribute of each object, a CMIP/SNMP mapper component converts the CMIP object class name, attribute name and distinguished name of the object into the corresponding SNMP attribute value and this data is stored in an MIB. An SNMP application component receives requests for information from a network manager of a local network. In order to service a valid request, the SNMP application component retrieves the required data from MIB and supplies this data to the network manager for the local network using the SNMP protocol. For changes in the values of certain attributes of certain objects, the SNMP application component issues traps to the manager of the local network.