Nippon Telegraph and Telephone Corporation

Yuji Minato

Hideki Maeda

Masahiro Yokota

Daisaku Shimazaki

Masaaki Inami

Masatoshi Namiki

The network device information management apparatus includes: a log data acquisition unit configured to acquire log data from each of the plurality of devices, the log data including information about components of the plurality of devices; and an inventory information estimation unit configured to exclude a common portion of the log data before and after registration of the component to extract a component configuration indicating information about the component newly registered to the device, compare the extracted component configuration with the component configuration extracted from a component registered to another device, estimate the common portion as inventory information, and store the estimated inventory information in storage means.

Network apparatus information management device and network apparatus information management method

[Problem] A transmission system, an apparatus management server, a failure management method, and a program enabling the cause of a failure associated with a silent change of an article to be swiftly identified are provided. [Solution] An apparatus management serverof a transmission system includes a collection unit configured to collect history information on an introduction instance of articles to an optical transmission apparatusand an information analysis unitconfigured to visualize and display, based on the history information collected, a graph in which a starting date of use for each of the articles is associated with the number of introductions of the article.

Transmission system, device management server, fault management method, and program

A management device of a transmission system includes a new path information input unit, a statistical information collecting unit that collects statistical information of actual traffic from nodes, and an uninterruptible path designing unit that calculates a delay fluctuation in an entire path with respect to a fluctuation for each section of the path, and designs a path in which the calculated delay fluctuation is smaller than a maximum fluctuation amount according to a buffering amount in the reception node as an uninterruptible path, a path information setting unit that updates path information of the path and stores the updated path information in an existing path information storage unit, and sets a bandwidth permitted in a node constituting the path in the node, and a notification unit that notifies a user of a path that was not designed as the uninterruptible path.

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Tokyo, Japan

Yuji Minato