Abstract: A monitoring device is configured to couple to a transmission apparatus having a plurality of interface cards, and control a replacement of the plurality of interface cards, the monitoring device includes a memory in which state information including attribute information and an operating state are stored, a processor coupled to the memory and the processor configured to monitor the operating state of each of the plurality of interface cards associated with internal address information assigned to each of the plurality interface cards, determine whether first attribute information of a first interface card of the plurality of interface cards of a replacement source matches second attribute information of a second interface card of the plurality of interface cards of a replacement destination, and update external address information of the first interface card to external address information of the second interface card when the first attribute information matches the second attribute information.

Abstract: An optical transmission device in an optical network in which a first optical path and a second optical path are set, the optical transmission device locating on the second optical path, the optical transmission device includes; a storage unit configured to store control data for a control of an optical transmission power to the second optical path, the control being performed based on a training signal received through the second optical path; and a controller configured to control the optical transmission power to the second optical path, based on the control data stored in the storage unit, according to a detection of an optical path change by which an optical path transmitting a main signal is changed from the first optical path to the second optical path.

Abstract: An optical transmission apparatus includes: a variable optical attenuation section configured to independently adjust, for each wavelength, attenuation of light of a plurality of wavelengths and adjust output optical power of wavelength multiplexed light that is output to an optical transmission line by adjustment of the attenuation; and a control section configured to stop, in accordance with control in which a wavelength included in the wavelength multiplexed light in a first wavelength band is wavelength-shifted to a second wavelength band that is different from the first wavelength band, adjustment of attenuation performed on the first wavelength band by the variable optical attenuation section.

Abstract: An optical transmission device includes: a wavelength filter configured to allow passage of an optical signal having a band; a monitor configured to monitor a wavelength of the optical signal; and a controller configured to detect, based on a monitoring result of the monitor, a change in the wavelength of the optical signal, to predict, based on the detected result, a direction of the change in the wavelength of the optical signal, and to expand a passband of the wavelength filter in the direction of the change.

Abstract: A transmission apparatus includes: a first output unit configured to generate a first optical signal of which a first wavelength is variable and control the first wavelength to be close to a second wavelength of a second optical signal transmitted as a multiplexed optical signal with the first optical signal, the first output unit outputting the first optical signal to another transmission apparatus; and a second output unit configured to generate a third optical signal that is replication of the first optical signal in a wavelength band opposite to the first wavelength across the second wavelength, the second output unit outputting the third optical signal to the another transmission apparatus, wherein the first output unit stops outputting the first optical signal when the another transmission apparatus switches an optical signal to be received from the first optical signal to the third optical signal.

Abstract: An optical transmission device in an optical network in which a first optical path and a second optical path are set, the optical transmission device locating on the second optical path, the optical transmission device includes; a storage unit configured to store control data for a control of an optical transmission power to the second optical path, the control being performed based on a training signal received through the second optical path; and a controller configured to control the optical transmission power to the second optical path, based on the control data stored in the storage unit, according to a detection of an optical path change by which an optical path transmitting a main signal is changed from the first optical path to the second optical path.

Abstract: An optical transmission apparatus includes: a variable optical attenuation section configured to independently adjust, for each wavelength, attenuation of light of a plurality of wavelengths and adjust output optical power of wavelength multiplexed light that is output to an optical transmission line by adjustment of the attenuation; and a control section configured to stop, in accordance with control in which a wavelength included in the wavelength multiplexed light in a first wavelength band is wavelength-shifted to a second wavelength band that is different from the first wavelength band, adjustment of attenuation performed on the first wavelength band by the variable optical attenuation section.

Abstract: A route setting apparatus having a processor and a memory which stores an instruction to cause the processor to generate a layer label in which a first signal type for transmission of a main signal is described on a layer-by-layer basis, to store, on a layer-by-layer basis, a score correspondingly associated with one or more of second signal types, and to generate data based on the score correspondingly associated for one of the second signal types that matches the first signal type in the layer label. The instruction causes the processor to determine an optimal route based on the generated data which includes data received from another apparatus included in a route for the transmission of the main signal, and transmit and receive the layer label and the generated data.

Abstract: A transmission apparatus includes: a first output unit configured to generate a first optical signal of which a first wavelength is variable and control the first wavelength to be close to a second wavelength of a second optical signal transmitted as a multiplexed optical signal with the first optical signal, the first output unit outputting the first optical signal to another transmission apparatus; and a second output unit configured to generate a third optical signal that is replication of the first optical signal in a wavelength band opposite to the first wavelength across the second wavelength, the second output unit outputting the third optical signal to the another transmission apparatus, wherein the first output unit stops outputting the first optical signal when the another transmission apparatus switches an optical signal to be received from the first optical signal to the third optical signal.

Abstract: In an apparatus having data installed therein, the apparatus includes a data storage part for storing a (n+1)th-order file obtained by bundling an nth-order file and (n+1)th data corresponding to an (n+1)th function level into one file, wherein n is an integer, an identifier storage part for storing an identifier indicating a function level of data to be installed in the apparatus, and a controller for detecting the function level based on the identifier stored in the identifier storage part, de-bundling the (n+1)th-order file stored in the data storage unit as many as times corresponding to the function level, and applying the de-bundled data to the apparatus.

Abstract: A route setting apparatus having a processor and a memory which stores an instruction to cause the processor to generate a layer label in which a first signal type for transmission of a main signal is described on a layer-by-layer basis, to store, on a layer-by-layer basis, a score correspondingly associated with one or more of second signal types, and to generate data based on the score correspondingly associated for one of the second signal types that matches the first signal type in the layer label. The instruction causes the processor to determine an optimal route based on the generated data which includes data received from another apparatus included in a route for the transmission of the main signal, and transmit and receive the layer label and the generated data.

Abstract: A relay station has an optical switch that switches a reception path of an optical signal. The relay station generates a subsignal that has a wavelength different from the wavelength of a data signal corresponding to a signal to be transmitted and transmits an optical signal obtained by multiplexing the generated subsignal and the data signal. In this state, when the data signal is not included in the received optical signal, the relay station determines whether the subsignal is included in the optical signal. When it is determined that the subsignal is included, the relay station maintains a connection path of the optical switch without switching the connection path.

Abstract: In a transmission system, a first transmitting apparatus (server node) acquires distribution data, which includes multiple update data sets and attribute information of the update data sets, from a file server via a second network. The first transmitting apparatus (server node) stores the attribute information so as to allow a second transmitting apparatus (client node) connected to the first transmitting apparatus (server node) via a first network to acquire the attribute information and determine necessity of acquisition with respect to each of the update data sets. The first transmitting apparatus (server node) also stores the update data sets to be acquired by the second transmitting apparatus (client node).

Abstract: A relay station has an optical switch that switches a reception path of an optical signal. The relay station generates a subsignal that has a wavelength different from the wavelength of a data signal corresponding to a signal to be transmitted and transmits an optical signal obtained by multiplexing the generated subsignal and the data signal. In this state, when the data signal is not included in the received optical signal, the relay station determines whether the subsignal is included in the optical signal. When it is determined that the subsignal is included, the relay station maintains a connection path of the optical switch without switching the connection path.

Abstract: To provide a transmission apparatus capable of setting the same control data to the entire child transmission apparatuses instantaneously at a time, thereby leading to improved maintenance operation and bringing about efficient maintenance and system stability. The transmission apparatus receives from a maintenance operator a designation of a parent apparatus having the control data set in advance. That control data is to be inherited to a child apparatus. The transmission apparatus determines whether any transmission apparatus has already been registered as parent apparatus in the child apparatus, and also determines whether the designated parent apparatus has already been registered as a child apparatus in the child apparatus. The transmission apparatus then requests the designated parent apparatus to transfer the control data in the designated parent apparatus to the child apparatus, when the designated parent apparatus is not registered in the child apparatus.

Abstract: When a primary failure occurs, each agent device (information processing device) checks itself to determine whether non-notification setting has been performed for alarm notification of the primary failure. If no non-notification setting has been performed, the agent device sends the alarm notification to a manager device (network management device). At the same time, the agent device sends a set alarm mask request to the agent device located downstream in the signal flow to request to perform non-notification setting for alarm notification of a secondary failure caused by the primary failure.

Abstract: In an apparatus having data installed therein, the apparatus includes a data storage part for storing a (n+1)th-order file obtained by bundling an nth-order file and (n+1)th data corresponding to an (n+1)th function level into one file, wherein n is an integer, an identifier storage part for storing an identifier indicating a function level of data to be installed in the apparatus, and a controller for detecting the function level based on the identifier stored in the identifier storage part, de-bundling the (n+1)th-order file stored in the data storage unit as many as times corresponding to the function level, and applying the de-bundled data to the apparatus.

Abstract: The present invention provides a node device for connecting a plurality of networks. The node device comprises a plurality of input units for respectively inputting data from first transmission lines installed in each of the networks, a plurality of output units for respectively outputting data to second transmission lines installed in each of the networks, and a switching unit for switching the data input from the input units to the output units. The input unit that inputs data from a transmission line shared by the networks among the first transmission lines has a higher transmission speed than other input units.

Abstract: A first determining unit determines whether a first software installed in a communication control unit is compatible with a second software installed in a transmission apparatus. A second determining unit determines whether a communication control by the communication control unit is interrupted by an update of the first software. An updating unit installs a predetermined software to the communication control unit based on a result of determination by a third determining unit that determines whether to automatically update the first software based on results of determination by the first and the second determining units.

Abstract: When a tunable laser is operating at any one of the different wavelengths, wavelength data is sampled and stored in a memory device. In the case where the same operating wavelength as a wavelength hitherto operated needs to be reset to the tunable laser, the wavelength data stored in the memory device is set to the tunable laser. This makes it possible to avoid a shift in wavelength due to age degradation of the tunable laser that selectively outputs any one of light signals of different wavelengths in dependence on the wavelength data set to the tunable laser.