Abstract: A network management apparatus according to an embodiment includes: a storage device configured to store information indicating a correspondence relationship between information objects related to a logical layer, information objects related to a physical layer in a network configuration, and information objects related to a facility layer which are objects in which the information objects related to the physical layer are housed; an acquisition unit configured to acquire an information object related to an occurrence path of a failure in the logical layer of the network configuration, from the storage device; and a search unit configured to search for, among the information objects related to the facility layer stored in the storage device, an information object related to the facility layer and the physical layer associated with the information object related to the occurrence path of the failure acquired from the acquisition unit, as a candidate for a facility that causes the failure.

Abstract: A network management apparatus acquires a given information object related to a plurality of occurrence paths of a failure in a logical layer of a network configuration; and retrieves, as a candidate of a facility to be a failure cause, information objects related to the facility layer and the physical layer commonly associated with the given information object; calculates, for each of the retrieved information objects, the number of information objects which are associated with the object and which are related to the plurality of occurrence paths of the failure as a multiplicity; and calculates, for each of the retrieved information objects, a proportion of the multiplicity with respect to the number of information objects in the logical layer which are affected when the failure occurs in the object.

Abstract: A network management apparatus according to an embodiment includes a storage device configured to store information indicating connection relationships between a plurality of communication devices and communication paths in a network configuration and rank information indicating ranks of the plurality of communication devices in the network configuration and a determination unit configured to, when a fault has occurred in a communication device, determine that a communication device influenced by the fault is within a fault influence range based on the information stored in the storage device.

Abstract: There is provided a network management device (1) including a capacity management unit (10) for managing the capacity in a network to be managed and a storage unit (20) for storing management information. The storage unit stores specification information of entities included in the network, and entity information including information indicative of relationships between the entities. The capacity management unit 10 includes a capacity request acquisition section (11) which receives a generation request of a first entity; reads the specification information about the first entity from the storage unit, and determines whether or not the first entity needs to consume a resource; when it is determined that the first entity needs to consume a resource, identifies a second entity capable of providing capacity consumed by the first entity, based on the entity information stored in the storage unit; and outputs information about the identification result.

Abstract: A network management apparatus according to an embodiment includes: a storage unit configured to store information indicating a correspondence relationship between information objects related to a physical layer and information objects related to a logical layer in a network configuration, an acquisition unit configured to acquire a first information object related to a location where a failure occurs in the physical layer of the network configuration from the storage unit, an identification unit configured to identify, as a failure influence range, a second information object associated with the first information object related to the location where the failure occurs, of the information objects related to the logical layer stored in the storage unit, the first information object being acquired by the acquisition unit, and an outputting unit configured to output information indicating the failure influence range identified by the identification unit.

Abstract: A network management apparatus according to an embodiment includes: an acquiring unit which acquires an information object related to a plurality of occurrence paths of a failure in a logical layer of a network configuration; and a retrieving unit which: retrieves, as a candidate of a facility to be a failure cause, information objects related to the facility layer and the physical layer commonly associated with the information object related to the plurality of occurrence paths of the failure having been acquired by the acquiring unit among information objects related to the facility layer; calculates, for each of the retrieved information objects related to the candidate of a facility to be the failure cause, the number of information objects which are associated with the object and which are related to the plurality of occurrence paths of the failure as a multiplicity; and calculates, for each of the retrieved information objects related to the candidate of a facility to be the failure cause, a proportion

Abstract: A network management apparatus according to an embodiment includes a storage device configured to store information indicating connection relationships between a plurality of communication devices and communication paths in a network configuration and rank information indicating ranks of the plurality of communication devices in the network configuration and a determination unit configured to, when a fault has occurred in a communication device, determine that a communication device influenced by the fault is within a fault influence range based on the information stored in the storage device.

Abstract: A network management apparatus according to an embodiment includes: a storage device configured to store information indicating a correspondence relationship between information objects related to a logical layer, information objects related to a physical layer in a network configuration, and information objects related to a facility layer which are objects in which the information objects related to the physical layer are housed; an acquisition unit configured to acquire an information object related to an occurrence path of a failure in the logical layer of the network configuration, from the storage device; and a search unit configured to search for, among the information objects related to the facility layer stored in the storage device, an information object related to the facility layer and the physical layer associated with the information object related to the occurrence path of the failure acquired from the acquisition unit, as a candidate for a facility that causes the failure.

Abstract: A network management device according to an embodiment includes: a first storage unit that stores entities representing substances of information objects in a network; a second storage unit that stores information on a start point and an end point of the network; a third storage unit that stores information on a rule of a path indicating types of and a connection order of a plurality of communication devices provided between the start point and the end point of the network; path calculation processing means for obtaining the information on the start point and the end point of the network from the second storage unit, and calculating, based on the entities stored in the first storage unit, a plurality of physical-layer paths between the start point and the end point of the network and obtaining entities between the start point and the end point in each of the plurality of physical-layer paths from the first storage unit; and path assessment processing means for assessing a path indicated by the obtained entiti

Abstract: There is provided a network management device (1) including a capacity management unit (10) for managing the capacity in a network to be managed and a storage unit (20) for storing management information. The storage unit stores specification information of entities included in the network, and entity information including information indicative of relationships between the entities. The capacity management unit 10 includes a capacity request acquisition section (11) which receives a generation request of a first entity; reads the specification information about the first entity from the storage unit, and determines whether or not the first entity needs to consume a resource; when it is determined that the first entity needs to consume a resource, identifies a second entity capable of providing capacity consumed by the first entity, based on the entity information stored in the storage unit; and outputs information about the identification result.

Abstract: A network management device according to an aspect includes a processing circuitry configured to perform acquiring a network configuration of a logical layer concerning a communication network having a redundant configuration in a communication section between a first network device and a second network device, the network configuration being a network configuration of a logical layer including a plurality of logical entities including a first logical entity corresponding to a first virtual port set in the first network device and a second logical entity corresponding to a second virtual port set in the second network device and, in response to occurrence of a failure of the communication network, retrieving a communicable path leading from the first logical entity to the second logical entity.

Abstract: A network management apparatus according to an embodiment includes: a storage unit configured to store information indicating a correspondence relationship between information objects related to a physical layer and information objects related to a logical layer in a network configuration, an acquisition unit configured to acquire a first information object related to a location where a failure occurs in the physical layer of the network configuration from the storage unit, an identification unit configured to identify, as a failure influence range, a second information object associated with the first information object related to the location where the failure occurs, of the information objects related to the logical layer stored in the storage unit, the first information object being acquired by the acquisition unit, and an outputting unit configured to output information indicating the failure influence range identified by the identification unit.

Abstract: An operation apparatus for outputting a request to a management apparatus which manages a Network Service (NS) constructed on a NetWork (NW) including a core NW serving as a virtualization area and an access NW serving as a non-virtualization area including: a storage unit configured to store new configuration information obtained by updating NW configuration information indicating an NW configuration including devices disposed on the NW due to a fault of the NS, a catalog which is a template of the NS, a record describing a lifecycle of the NS, and an order for requesting the management apparatus to control the NS; an optimal configuration determination unit configured to determine an optimal configuration of the NS based on the new configuration information, the catalog, the record, and the order; and an order generation unit configured to generate a change order for changing an NS configuration of the NS to the optimal configuration determined by the optimal configuration determination unit.

Abstract: A network management device according to an embodiment includes: a path selection processing unit configured to perform path selection processing of selecting a path of a physical layer between a start point and an end point of a network based on a first entity stored in a first storage device configured to store the first entity, the first entity representing an entity of an information object of the network; and an entity generation processing unit configured to perform entity generation processing of generating a second entity of a logical layer corresponding to the path of the physical layer selected by the path selection processing unit based on a specification of the information object stored in a second storage device configured to store the specification.

Abstract: A network management device according to an embodiment includes network property storage means for storing information representing network properties, information object storage means for storing an information object relating to a network configuration corresponding to information representing network properties stored in the network property storage means, network property acquisition means for acquiring, from the network property storage means, information representing network properties corresponding to an optional protocol layer, information object acquisition means for acquiring, from the information object storage means, the information object corresponding to information representing network properties acquired by the network property acquisition means, and display means for displaying the information object acquired by the information object acquisition means.

Abstract: An operation apparatus for outputting a request to a management apparatus which manages a Network Service (NS) constructed on a NetWork (NW) including a core NW serving as a virtualization area and an access NW serving as a non-virtualization area including: a storage unit configured to store new configuration information obtained by updating NW configuration information indicating an NW configuration including devices disposed on the NW due to a fault of the NS, a catalog which is a template of the NS, a record describing a lifecycle of the NS, and an order for requesting the management apparatus to control the NS; an optimal configuration determination unit configured to determine an optimal configuration of the NS based on the new configuration information, the catalog, the record, and the order; and an order generation unit configured to generate a change order for changing an NS configuration of the NS to the optimal configuration determined by the optimal configuration determination unit.

Abstract: A network management device according to an embodiment includes network property storage means for storing information representing network properties, information object storage means for storing an information object relating to a network configuration corresponding to information representing network properties stored in the network property storage means, network property acquisition means for acquiring, from the network property storage means, information representing network properties corresponding to an optional protocol layer, information object acquisition means for acquiring, from the information object storage means, the information object corresponding to information representing network properties acquired by the network property acquisition means, and display means for displaying the information object acquired by the information object acquisition means.