Nippon Telegraph and Telephone Corporation

Motomu Nakajima

Yuji Soejima

Aiko Oi

Kosuke Sakata

Yuichi Suto

Masataka Sato

Shingo Horiuchi

Kimihiko Fukami

Kyoko Yamagoe

To appropriately exclude alarms not requiring maintenance operator confirmation. An alarm control deviceincludes: an individual filter determination unitwhich acquires, from a storage unit, a determination condition (an individual filter) for whether or not maintenance operator confirmation corresponding to a device alarm issued from a network element deviceis necessary; an alarm evaluation unitwhich acquires information corresponding to a determination criterion of the determination condition from a management databasemanaging the network element device, checks the acquired information with the determination condition, and determines whether or not maintenance operator confirmation is necessary; and an alarm notification unitwhich transmits a device alarm to a maintenance operator terminalwhen the maintenance operator confirmation is determined to be necessary and does not transmit the device alarm to the maintenance operator terminalwhen the maintenance operator confirmation is determined to be unnecessary.

Alarm control device and alarm control method

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.

Operation device and operation method

A management apparatus is configured to manage a network service (NS) constructed on a network (NW) including a core NW configured to serve as a virtualization area and an access NW configured to serve as a non-virtualization area includes an E2EO configured to control the NS, an SVRO configured to control server-type apparatuses located on the NW, and a NWRO configured to control NW-type apparatuses located on the NW. The E2EO includes a single data center (DC) determination unit configured to determine whether a group of apparatuses used for providing the NS is located in a single DC. The group of apparatuses is designated by an order acquired from an upper level apparatus U. Among the NW-type apparatuses, ToRs located in the DC are controlled by the SVRO, instead of by the NWRO, when it is determined that the group of apparatuses is located in the single DC.

Management device and management method

[Problem] A network service selection apparatus is provided that is able to suitably realize dynamic switching of a network service with a simple method. [Solution] A network service selection apparatusis provided that includes a network service switching unitconfigured to, based on a specification of a network service stored and a service request from a user terminal apparatus, extract a combination of the network services of an initial operation and a spare network service and to connect two service providing systems corresponding to the combination of the network services of the initial operation, and a network service state confirmation unitconfigured to confirm a state of a network service between the two service providing systems

Growing community of inventors

Tokyo, Japan

Motomu Nakajima