Operation management device, operation management method, and program

Abstract

An information registration unit 11 enters a configuration for an optical path. A path opening unit 12 inputs the configuration into each ROADM along the optical path and acquires correlation information between the logically structured optical path and physically structured subports from each ROADM. An alarm mapping unit 13 references the correlation information between the optical path and the subports upon receiving an alarm including information concerning a subport, and adds information concerning the optical path to the alarm. The information registration unit 11 enters information concerning a port connecting a device and information concerning an OTN path used by the device. The alarm mapping unit 13 retains correlation information between the OTN path and the port, references the correlation information between the OTN path and the port upon receiving the alarm including information concerning the subport inside the port, and adds information concerning the OTN path to the alarm.

Description

Operation management device, operation management method, and program

[0001] The present disclosure relates to an operation management device, an operation management method, and a program.

[0002] All-photonics networks (APNs) can achieve high-speed, large-capacity, low-latency, and low-power-consumption transmission. APN maintenance and monitoring is essential to maintain high network reliability and ensure service stability.

[0003] Gentaro Funatsu and seven others, "APN Controller Technology for Providing and Expanding IOWN Services," [online], November 10, 2023, Nippon Telegraph and Telephone Corporation, Internet <URL: https: / / www.rd.ntt / research / JN202311_23716.html>

[0004] In optical path alarm monitoring, the logical configuration and physical configuration can only be linked when the optical path is set up, so conventional technology had the problem of not being able to link sub-port-level alarms to optical paths, making it impossible to monitor the alarms using the optical path configuration diagram.

[0005] In the operation of Optical Transport Network (OTN) paths, alarms are issued on a sub-port basis, so devices must be registered on a sub-port basis. In other words, with conventional technology, designers had to register the settings of transponder clients on OTN paths down to the sub-port level for each interface, which created the problem of a heavy workload for registering device information. Another issue was that alarms were issued at unnecessary granularity (for example, on a sub-port level).

[0006] The present disclosure has been made in view of the above, and aims to make it easier to monitor optical transmission networks.

[0007] An operation management device of one aspect of the present disclosure inputs optical path settings, inputs the settings to each of the optical transmission devices along the optical path, obtains correspondence information between the logically configured optical path and the physical configuration subports from each of the optical transmission devices, and when it receives an alert including subport information, refers to the correspondence information and assigns optical path information to the alert.

[0008] An operation management device of one aspect of the present disclosure inputs information about a port to which a device is connected and information about an optical transport network path used by the device, retains correspondence information between the port information and the optical transport network path information, and when it receives an alert including information about a lane within the port, refers to the correspondence information and assigns information about the optical transport network path to the alert.

[0009] According to the present disclosure, monitoring of an optical transmission network can be made easier.

[0010] Fig. 1 is a diagram illustrating an example of the configuration of an operation management device according to a first embodiment. Fig. 2 is a diagram illustrating an example of association information between optical paths and subports. Fig. 3 is a diagram illustrating an example of the configuration of an operation management device according to a first embodiment. Fig. 4 is a diagram illustrating an example of association information between OTN paths and ports. Fig. 5 is a diagram illustrating an example of the hardware configuration of an operation management device.

[0011] First Embodiment An example of the configuration of an operation management device according to a first embodiment will be described with reference to FIG. 1. In the first embodiment, when an optical path is set, association information between the optical path and a subport is acquired, and an alarm is associated with the optical path based on the association information. An optical path refers to the physical transmission path of an optical signal, and is a route for transmitting data end-to-end at a specific wavelength. A subport is a physical port for each wavelength. An alarm is issued on a subport-by-subport basis.

[0012] The operation management device shown in FIG. 1 includes an information registration unit 11, a path establishment unit 12, an alarm mapping unit 13, and a display unit 14.

[0013] The information registration unit 11 accepts registration of optical paths from a network designer and transmits it to the path establishment unit 12, and also receives correspondence information between optical paths and subports from the path establishment unit 12 and registers it in the alarm mapping unit 13.

[0014] The path opening unit 12 opens the optical path by inputting settings to each optical transmission device along the optical path based on the optical path information received from the information registration unit 11 in response to instructions from a network engineer. For example, the optical transmission device is a relay device or a Reconfigurable Optical Add / Drop Multiplexer (ROADM). A ROADM is an optical transmission device that enables the addition and drop of optical signals in an optical transmission network.

[0015] Furthermore, the path opening unit 12 acquires association information between optical paths and subports from each of the optical transmission devices, and transmits the association information to the information registration unit 11 .

[0016] The alarm mapping unit 13 holds correspondence information between optical paths and subports, and upon receiving an alarm from an optical transmission device, identifies the optical path associated with the subport of the Alarm ID (AID) included in the alarm, and transmits an alarm including information about the optical path to the display unit 14. The alarm mapping unit 13 may transmit information about the optical path to the display unit 14 in response to an inquiry from the display unit 14.

[0017] The display unit 14 associates alarms on a subport basis with optical paths and displays an optical path configuration diagram or a list of alarms. An optical path configuration diagram is a visual representation of the routes and configurations of optical paths in an optical transmission network. By associating alarms with optical paths in the optical path configuration diagram, network operators can monitor alarms on the optical path configuration diagram.

[0018] Next, an example of the processing flow of the operation management device will be described with reference to FIG.

[0019] In step S10, the designer registers an optical path in the information registration unit 11. In the example of Fig. 1, an Optical Channel (OCh) with an ochid of "och-1 / 1 / 0 / E1.1.1" (hereinafter, A = och-1 / 1 / 0 / E1.1.1) is registered. An OCh is a basic unit for forming an optical path within an optical transmission network.

[0020] In step S11 , the information registration unit 11 transmits to the path establishment unit 12 information on the optical path registered by the designer.

[0021] In step S12, the installer operates the path opening unit 12 to open the optical path.

[0022] In step S13, the path opening unit 12 inputs settings to each of the optical transmission devices on the optical path to be opened. Although only one ROADM XXX is shown in Fig. 1, settings are input to each of the optical transmission devices on the optical path.

[0023] In step S14, each optical transmission device assigns a subport that accommodates the optical path to the optical path, and the optical path and the subport are associated with each other. In the ROADM XXX in Figure 1, a subport with subportid "1 / 1 / 0 / E1 / 40" (hereinafter, B=1 / 1 / 0 / E1 / 40) is assigned to the optical path with ochid=A.

[0024] In step S15, the path establishment unit 12 acquires correspondence information between optical paths and subports from each of the optical transmission devices. For example, the path establishment unit 12 acquires correspondence information between optical paths and subports from an Alarm ID (AID) in the optical path setting, as shown below.

[0025] och-<shelfid> / <slotid> / 0 / <portid>.<oms#>.<och-id#>

[0026] In step S16 , the path establishing unit 12 transmits the association information between the optical path and the sub-port to the information registration unit 11 .

[0027] In step S17, the information registration unit 11 registers correspondence information between optical paths and subports in the alarm mapping unit 13. Fig. 2 shows an example of correspondence information between optical paths and subports held by the alarm mapping unit 13. In the example shown in the figure, an entry with a device ID of XXX, an ochid of "och-1 / 1 / 0 / E1.1.1", and a subportid of "1 / 1 / 0 / E1 / 40" is registered.

[0028] The network operator monitors the optical path of ochid=A.

[0029] In step S21, the alarm mapping unit 13 receives an alarm from ROADM XXX. The alarm includes an alarm AID including a device ID and a subport ID. The alarm AID is, for example, as shown below. The AID of the optical path setting described above and the alarm AID below indicate the same location.

[0030] Subport-<shelfid> / <slotid> / 0 / <portid> / <subportid>

[0031] In step S22, the alarm mapping unit 13 refers to the correspondence information between optical paths and subports, identifies the optical path associated with the subportid included in the alarm, and sends an alarm with information about the optical path to the display unit 14.

[0032] In step S23, the display unit 14 associates the alarm with the optical path and displays an optical path configuration diagram or a list of alarms.

[0033] As described above, in the operation management device of this embodiment, the information registration unit 11 inputs optical path settings, the path establishment unit 12 inputs the settings to each ROADM on the optical path, and acquires correspondence information between the optical paths of the logical configuration and the subports of the physical configuration from each ROADM. When the alarm mapping unit 13 receives an alarm including subport information, it references the correspondence information between the optical paths and the subports and assigns the optical path information to the alarm. This makes it possible to monitor alarms on a subport-by-subport basis using an optical path configuration diagram or the like, while eliminating the need to manually associate optical paths with subports.

[0034] [Second embodiment] An example of the configuration of an operation management device according to the second embodiment will be described with reference to Fig. 3. In the second embodiment, device registration is accepted on a port-by-port basis, and when an alarm is issued, the device is aggregated on a port-by-port basis according to the device type and associated with an OTN path. An OTN path is a logical path constructed on an optical path.

[0035] 3 includes, as in the first embodiment, an information registration unit 11, a path establishment unit 12, an alarm mapping unit 13, and a display unit 14. The operation management device of the first embodiment may also be used.

[0036] The information registration unit 11 accepts registration of devices on a port-by-port basis from a network designer and transmits device information to the path establishment unit 12. In addition, it accepts information on OTN paths used by the devices and transmits information on ports connecting the devices and information on the OTN paths to the alarm mapping unit 13. The devices to be registered here are transponder clients connected to optical transmission devices (e.g., transponders).

[0037] The path establishment unit 12 sets up the optical transmission device in accordance with instructions from the network engineer.

[0038] The alarm mapping unit 13 holds correspondence information between the device type, OTN path, and port of the optical transmission device, and upon receiving an alarm from the optical transmission device, aggregates the alarms on a port-by-port basis according to the device type, associates them with the OTN path, and transmits an alarm including information about the OTN path to the display unit 14. The alarm mapping unit 13 may transmit information about the OTN path to the display unit 14 in response to an inquiry from the display unit 14.

[0039] The display unit 14 associates alarms aggregated on a port-by-port basis with OTN paths, and displays an optical path configuration diagram or a list of alarms.

[0040] Next, an example of the processing flow of the operation management device will be described with reference to FIG.

[0041] In step S30, the designer registers the device on a port-by-port basis and registers the OTN path information in the information registration unit 11. In the example of Fig. 3, the designer registers that the device is connected to a port of TRANSPONDER YYY with a portid of "35 / 4 / 0 / C1" (hereinafter, portid = A) and that the OTN path with an otnid of "y_to_z" (hereinafter, otnid = C) is used.

[0042] In step S31, the information registration unit 11 transmits to the path establishment unit 12 information on the device and port registered by the designer.

[0043] In step S32, the information registration unit 11 registers the port information and the OTN path information in the alarm mapping unit 13. Fig. 4 shows an example of the correspondence information between the OTN path and the port held by the alarm mapping unit 13. In the example shown in the figure, an entry is registered in which the device ID is YYY, the device type is transponder, the otnid is "y_to_z", and the portid is "35 / 4 / 0 / C1".

[0044] In step S33, the installer operates the path establishment unit 12 to perform the setting work for the optical transmission device.

[0045] In step S34, the path establishing unit 12 inputs the settings to the optical transmission device. Although only one TRANSPONDER YYY is shown in Fig. 3, the path establishing unit 12 inputs the settings to each of the optical transmission devices.

[0046] The network operator monitors the OTN path with otnid=C.

[0047] In step S41, the alarm mapping unit 13 receives an alarm from TRANSPONDER YYY. The alarm includes an alarm AID, which includes a device ID and a subport ID. If the transceiver module attached to the transponder is a Quad Small Form-factor Pluggable (QSFP) type, each module has four subports (also called lanes or channels). In other words, there are four subports within a port. The alarm includes information about the subports within the port.

[0048] In step S42, the alarm mapping unit 13 refers to the correspondence information between the OTN paths and the ports to identify the type of optical transmission device that issued the alarm, and if the device type is a transponder, it aggregates the alarms on a port-by-port basis and transmits an alarm with OTN path information attached to it to the display unit 14. For other device types, the alarm mapping unit 13 transmits an alarm with OTN path information attached to it to the display unit 14.

[0049] In step S43, the display unit 14 associates the alarm with the OTN path and displays an optical path configuration diagram or a list of alarms.

[0050] As explained above, in the operation management device of this embodiment, the information registration unit 11 inputs information about the ports to which the devices are connected and information about the OTN paths used by the devices, and the alarm mapping unit 13 holds information relating to the OTN paths and ports. When an alarm including information about a subport within a port is received, the alarm mapping unit 13 references the information relating to the OTN paths and ports and assigns the OTN path information to the alarm. This eliminates the need for setting on a subport-by-subport basis without affecting alarm monitoring.

[0051] When an operation management device of this embodiment receives an alarm containing subport information, if the type of optical transmission device that issued the alarm is a transponder, the operation management device aggregates the alarm by port, thereby enabling alarms to be aggregated at a desired granularity.

[0052] The above-described operation management device can be, for example, a general-purpose computer system including a central processing unit (CPU) 901, memory 902, storage 903, communication device 904, input device 905, and output device 906, as shown in Fig. 5. In this computer system, the operation management device is realized by the CPU 901 executing a predetermined program loaded onto memory 902. This program can be recorded on a computer-readable non-transitory recording medium such as a magnetic disk, optical disk, or semiconductor memory, or can be distributed via a network.

[0053] 11 Information registration unit 12 Path opening unit 13 Alarm mapping unit 14 Display unit

Claims

1. An operation and management device for an optical transmission network, which inputs optical path settings, inputs the settings to each of the optical transmission devices along the optical path, obtains correspondence information between the optical path of a logical configuration and the subport of a physical configuration from each of the optical transmission devices, and, when an alarm including subport information is received, refers to the correspondence information and adds optical path information to the alarm.

2. An operation management device for an optical transmission network, which inputs information about a port to which a device is connected and information about an optical transport network path used by the device, stores information relating to the port and the optical transport network path, and, when an alarm including information about lanes within the port is received, refers to the information relating to the port and adds information about the optical transport network path to the alarm.

3. An operation management device according to claim 2, wherein, when an alarm including information about lanes within the port is received, if the type of optical transmission device that issued the alarm is a transponder, the alarm is aggregated by port.

4. An operation and management method using an operation and management device for an optical transmission network, comprising: inputting optical path settings; inputting the settings into each of the optical transmission devices along the optical path; acquiring correspondence information between the optical path of a logical configuration and the subport of a physical configuration from each of the optical transmission devices; and, when an alarm including subport information is received, referring to the correspondence information and adding optical path information to the alarm.

5. An operation and management method using an operation and management device for an optical transmission network, comprising: inputting information on a port to which a device is connected and information on an optical transport network path used by the device; retaining correspondence information between the port information and the optical transport network path information; and, when an alarm including information on lanes within the port is received, referring to the correspondence information and adding optical transport network path information to the alarm.

6. An operation management method according to claim 5, wherein, when an alarm including information about lanes within the port is received, if the type of optical transmission device that issued the alarm is a transponder, the alarm is aggregated by port.

7. A program for causing a computer to operate as each part of the operation management device according to any one of claims 1 to 3.

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