Network anomaly analysis method, transport network and related device

Abstract

Provided in the embodiments of the present application are a network anomaly analysis method, a transport network and a related device, which can collaboratively analyze anomaly events of cable layers, optical layers, electrical layers or service layers comprised in transport networks, thereby improving the efficiency of discovery of hidden risks of networks. The method comprises: a network management device receives an anomaly message from a target optical device; the network management device obtains an anomaly event of a first optical layer channel caused by the anomaly message, and the network management device obtains an anomaly event of a first electrical layer channel caused by the anomaly event of the first optical layer channel; and the network management device obtains an anomaly event of a target service caused by the anomaly event of the first electrical layer channel.

Description

Method for analyzing network anomaly, transport network and related device

[0001] The present application claims priority from the Chinese patent application No. 202411319604.2 filed on September 20, 2024, and entitled "A method for analyzing network anomaly, a transport network and related device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of optical communication technology, in particular to a method for analyzing network anomaly, a transport network and related device. BACKGROUND

[0003] The optical transport network transmits services by optical signals, has the characteristics of large bandwidth, low latency and high reliable protection, and is generally used as a high-quality transmission network. The optical transport network needs to realize real-time discovery of network hidden dangers to ensure the high quality and reliability of transmission services.

[0004] The optical transport network is composed of multiple layers of networks. The optical fibers laid between sites form the cable layer at the bottom layer. The optical layer uses wavelength division multiplexing technology to multiplex different wavelengths of optical signals into one optical fiber span for transmission. The electrical layer uses optical channel data units (ODUs) to carry services. In the multi-layer network, hidden dangers affecting service transmission may occur in the cable layer, the optical layer and the electrical layer. Some hidden dangers may also have complex situations of layer-by-layer influence or combined influence.

[0005] However, the existing analysis of hidden dangers in the multi-layer network is scattered. For example, hidden dangers in the cable layer, the optical layer, the electrical layer or the service layer are analyzed independently, which leads to incomplete discovery and processing of hidden dangers and reduces the efficiency of hidden danger discovery. SUMMARY

[0006] The embodiments of the present application provide a method for analyzing network anomaly, a transport network and related device, which can cooperatively analyze abnormal events in the cable layer, the optical layer, the electrical layer or the service layer included in the transport network, and improve the efficiency of network hidden danger discovery.

[0007] In a first aspect, the embodiments of the present application provide a network exception analysis method, which comprises: a network management device receiving an exception message from a target optical device, the exception message being used to indicate that an exception occurs in a first optical fiber span, and the target optical device being connected to the first optical fiber span; the network management device obtaining an exception event of a first optical layer channel, an optical signal carrying a target service being transmitted through the first optical layer channel, the first optical layer channel comprising M optical devices and N optical fiber spans, the M and the N being any integers not less than 1, the M optical devices comprising the target optical device, the N optical fiber spans comprising the first optical fiber span, and the exception event of the first optical layer channel corresponding to the exception message; the network management device obtaining an exception event of a first electrical layer channel, the first electrical layer channel corresponding to the first optical layer channel, an electrical signal carrying the target service being transmitted through the first electrical layer channel, and the exception event of the first electrical layer channel corresponding to the exception event of the first optical layer channel; and the network management device obtaining an exception event of the target service, the exception event of the target service corresponding to the exception event of the first electrical layer channel.

[0008] According to the embodiments of the present application, when the network management device detects that an exception event occurs in the first optical fiber span through which the target service is transmitted, the network management device can detect the exception event of the first optical layer channel caused by the exception event of the first optical fiber span, detect the exception event of the first electrical layer channel caused by the exception event of the first optical layer channel, and detect the exception event of the target service caused by the exception event of the first electrical layer channel. The target service is transmitted through the first optical fiber span in the cable layer, through the first optical layer channel in the optical layer, and through the first electrical layer channel in the electrical layer. Therefore, based on the exception event of the first optical fiber span, the network management device can analyze the exception event of the first optical fiber span, the exception event of the first optical layer channel, the exception event of the first electrical layer channel, and the exception event of the target service in sequence. The collaborative analysis capability of the transport network fault event is improved. When an exception event occurs in the cable layer, the network management device can timely find the hidden trouble caused by the first optical layer channel and the first electrical layer channel to the transmission of the target service, and detect the exception event of the target service in the service layer. The comprehensiveness of hidden trouble analysis, the efficiency and accuracy of hidden trouble finding, and the real-time finding of hidden troubles in each network layer of the transport network are improved.

[0009] Based on the first aspect, in an optional implementation manner, after the network management device obtains the exception event of the target service, the method further comprises: the network management device obtaining a corresponding relationship among the exception event of the first optical fiber span, the exception event of the first optical layer channel, the exception event of the first electrical layer channel, and the exception event of the target service, wherein the exception event of the first optical fiber span corresponds to the exception message.

[0010] According to the implementation, in the case that the abnormal event occurs in the first fiber span, the corresponding relationship among the abnormal event of the first fiber span, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service can be detected in time, the abnormal events among the networks of different layers included in the transport network are analyzed cooperatively, the comprehensiveness of hidden danger analysis is improved, and the efficiency of hidden danger discovery is improved.

[0011] According to the first aspect, in an optional implementation, after the network management device obtains the corresponding relationship among the abnormal event of the first fiber span, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service, the method further includes: a display model of the network management device displays the corresponding relationship among the abnormal event of the first fiber span, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service.

[0012] According to the implementation, the network management device can visually display the corresponding relationship among the abnormal event of the first fiber span, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service through the display model, so that the user can visually check the abnormal events of the networks of different layers of the transport network through the display model, the comprehensive realization of the abnormal events of the networks of different layers is ensured, the display mode is more systematic, the hidden dangers of the networks of different layers can be accurately excluded, and the efficiency of cooperative analysis of the abnormal events of the networks of different layers included in the transport network is improved.

[0013] According to the first aspect, in an optional implementation, the display model is in a semicircular structure, and the abnormal event of the first fiber span, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service are sorted in descending order according to the distance from the center of the semicircle.

[0014] According to the implementation, the efficiency of reflecting the corresponding relationship among the abnormal event of the first fiber span, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service is improved through the display model in a semicircular structure, and the efficiency and accuracy of transport network analysis are further improved.

[0015] In an optional implementation of the first aspect, the abnormal message includes an identifier of the first fiber span, and before the network management device obtains the abnormal event of the first optical layer channel, the method further includes: the network management device obtaining the first optical layer channel, an identifier of the first optical layer channel corresponding to the identifier of the first fiber span; before the network management device obtains the abnormal event of the first electrical layer channel, the method further includes: the network management device obtaining the first electrical layer channel, an identifier of the first electrical layer channel corresponding to the identifier of the first optical layer channel; before the network management device obtains the abnormal event of the target service, the method further includes: the network management device obtaining the target service, an identifier of the target service corresponding to the identifier of the first electrical layer channel.

[0016] With the implementation, the network management device can accurately obtain the first optical layer channel through which the target service is transmitted according to the identifier of the first fiber span, and accurately obtain the first electrical layer channel through which the target service is transmitted according to the identifier of the first optical layer channel, and further accurately obtain the target service according to the identifier of the first electrical layer channel, thereby ensuring the accuracy of the corresponding relationship between the abnormal event of the first fiber span, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service.

[0017] In an optional implementation of the first aspect, if the abnormal message is used to indicate that the first fiber span has a degradation abnormal event, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service are degradation respectively.

[0018] With the implementation, if the network management device detects that the first fiber span has a degradation abnormal event, the network management device can accurately obtain the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service as degradation respectively, thereby realizing the collaborative analysis of abnormal events between the layers of networks included in the transport network.

[0019] In an optional implementation of the first aspect, if the abnormal message is used to indicate that the first fiber span has a degradation abnormal event, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service are out-of-limit of bit error rate respectively.

[0020] With the implementation, if the network management device detects that the first fiber span has a degradation abnormal event, the network management device can accurately obtain the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service as out-of-limit of bit error rate respectively, thereby realizing the collaborative analysis of abnormal events between the layers of networks included in the transport network.

[0021] In an optional implementation of the first aspect, if the abnormal message is used to indicate that the abnormal event of the first fiber span is degradation, the abnormal event of the first optical layer channel and the abnormal event of the first electrical layer channel are respectively out-of-limit of bit error rate, and the abnormal event of the target service is out-of-limit of packet loss rate.

[0022] With the implementation, if the network management device detects the abnormal event of the first fiber span being degradation, the abnormal event of the first optical layer channel and the abnormal event of the first electrical layer channel are respectively out-of-limit of bit error rate, and the abnormal event of the target service is out-of-limit of packet loss rate, which achieves the cooperative analysis of the abnormal events between the layers of the transport network.

[0023] In an optional implementation of the first aspect, if the abnormal message is used to indicate that the abnormal event of the first fiber span is flash-off, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service are respectively flash-off.

[0024] With the implementation, if the network management device detects the abnormal event of the first fiber span being flash-off, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service are respectively flash-off, which achieves the cooperative analysis of the abnormal events between the layers of the transport network.

[0025] In an optional implementation of the first aspect, if the abnormal message is used to indicate that the abnormal event of the first fiber span is interruption, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service are respectively interruption.

[0026] With the implementation, if the network management device detects the abnormal event of the first fiber span being interruption, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service are respectively interruption, which achieves the cooperative analysis of the abnormal events between the layers of the transport network.

[0027] In an optional implementation of the first aspect, the target optical device is further connected to a second fiber span, and the abnormal message is further used to indicate that the first fiber span and the second fiber span are a pair of fiber spans in the same cable or the same trench, and the first fiber span and the second fiber span are both used to transmit the target service, the abnormal event of the first optical layer channel obtained by the network management device includes: the abnormal event of the first optical layer channel and a second optical layer channel obtained by the network management device, the second optical layer channel includes the second fiber span, and the abnormal events of the first optical layer channel and the second optical layer channel have a shared risk link group (SRLG) that includes an identifier of the first fiber span and an identifier of the second fiber span; the abnormal event of the first electrical layer channel obtained by the network management device includes: the abnormal event of the first electrical layer channel and a second electrical layer channel obtained by the network management device, the second electrical layer channel corresponds to the second optical layer channel, and the abnormal events of the first electrical layer channel and the second electrical layer channel have the SRLG; and the abnormal event of the target service obtained by the network management device includes: the abnormal event of the target service obtained by the network management device is that a route for transmitting the target service has the SRLG.

[0028] With the implementation, the transmission network includes a working route and a protection route. If the route for transmitting the target service is switched from the working route to the protection route, the abnormal events of the first optical layer channel and the second optical layer channel caused by the switching can be detected, the abnormal events of the first electrical layer channel and the second electrical layer channel caused by the abnormal events of the first optical layer channel and the second optical layer channel can be detected, and the abnormal event of the target service caused by the abnormal events of the first electrical layer channel and the second electrical layer channel can be detected. Therefore, the abnormal events of the cable layer, the abnormal events of the optical layer, the abnormal events of the electrical layer, and the abnormal events of the service layer caused by the switching of the working route to the protection route can be analyzed in a coordinated manner, the coordinated analysis capability of the transmission network fault events is improved, the comprehensiveness of the hidden danger analysis is improved, and the efficiency of the hidden danger discovery is improved.

[0029] In an optional implementation of the first aspect, if the fiber span through which the optical signal carrying the target service is switched from the first fiber span to the second fiber span, the abnormal events of the first optical layer channel and the second optical layer channel are that the optical layer channel through which the optical signal carrying the target service is switched from the first optical layer channel to the second optical layer channel, the abnormal events of the first electrical layer channel and the second electrical layer channel are that the electrical layer channel through which the electrical signal carrying the target service is switched from the first electrical layer channel to the second electrical layer channel, and the abnormal event of the target service is a flash.

[0030] According to the implementation, if the network management device detects that the optical signal carrying the target service is switched from the first optical fiber span to the second optical fiber span, the abnormal event of switching the first optical layer channel to the second optical layer channel, the abnormal event of switching the first electrical layer channel to the second electrical layer channel, and the abnormal event of the target service can be accurately detected as interruption, so that the abnormal events between the layers of the transport network are cooperatively analyzed.

[0031] In a second aspect, the embodiments of the present application provide a network management device, comprising: a receiving module configured to receive an abnormal message from a target optical device, the abnormal message being used to indicate that a first optical fiber span is abnormal, and the target optical device being connected to the first optical fiber span; and a processing module configured to: obtain an abnormal event of a first optical layer channel, the first optical layer channel being used to carry transmission of an optical signal of a target service, the first optical layer channel comprising M optical devices and N optical fiber spans, the M and the N being any integer greater than or equal to 1, the M optical devices comprising the target optical device, the N optical fiber spans comprising the first optical fiber span, and the abnormal event of the first optical layer channel corresponding to the abnormal message; obtain an abnormal event of a first electrical layer channel, the first electrical layer channel corresponding to the first optical layer channel, the first electrical layer channel being used to carry transmission of an electrical signal of the target service, and the abnormal event of the first electrical layer channel corresponding to the abnormal event of the first optical layer channel; and obtain an abnormal event of the target service, the abnormal event of the target service corresponding to the abnormal event of the first electrical layer channel. The beneficial effects of the present aspect are described in the first aspect, and will not be repeated here.

[0032] Based on the second aspect, in an optional implementation, the processing module is further configured to obtain a corresponding relationship among the abnormal event of the first optical fiber span, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel, and the abnormal event of the target service, wherein the abnormal event of the first optical fiber span corresponds to the abnormal message.

[0033] Based on the second aspect, in an optional implementation, the network management device further comprises a display module configured to display the corresponding relationship among the abnormal event of the first optical fiber span, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel, and the abnormal event of the target service through the display module.

[0034] In an optional implementation based on the second aspect, the target optical device is further connected to a second fiber span, and the abnormality message is further used to indicate that the first fiber span and the second fiber span are a pair of fiber spans in the same cable or the same trench, and the first fiber span and the second fiber span are both used to transmit the target service, and the processing module is further used to: obtain an abnormal event of the first optical layer channel and a second optical layer channel, the second optical layer channel including the second fiber span, the abnormal event of the first optical layer channel and the second optical layer channel being a shared risk link group (SRLG) including an identifier of the first fiber span and an identifier of the second fiber span; obtain an abnormal event of a first electrical layer channel and a second electrical layer channel, the second electrical layer channel corresponding to the second optical layer channel, the abnormal event of the first electrical layer channel and the second electrical layer channel being the SRLG; and obtain an abnormal event of the target service, the abnormal event of the target service being that a route for transmitting the target service has the SRLG.

[0035] In a third aspect, an embodiment of the present application provides a network management device, including a processor and a receiver, the receiver being configured to perform the steps related to receiving in any one of the first aspect, and the processor being configured to perform the steps related to processing in any one of the first aspect.

[0036] In a fourth aspect, an embodiment of the present application provides a transport network, including a network management device, M optical devices and N fiber spans, M and N being any integer greater than or equal to 1, each of the M optical devices being connected to one of the N fiber spans, and the network management device being connected to each of the M optical devices, the network management device being configured to perform the method in any one of the first aspect.

[0037] In a fifth aspect, an embodiment of the present application provides a chip, including a logic circuit and a communication interface, the communication interface being configured to receive data and transmit the data to the logic circuit, or send data from the logic circuit to another chip, and the logic circuit being configured to perform the method in any one of the first aspect.

[0038] In a sixth aspect, an embodiment of the present application provides a computer readable storage medium, including computer program instructions, when the computer program instructions are executed by a processor, the processor performs the method in any one of the first aspect.

[0039] In a seventh aspect, an embodiment of the present application provides a computer program product, including instructions, when the instructions are executed by a computer, the computer performs the method in any one of the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0040] Fig. 1 is a structure example diagram of a communication system to which the network anomaly analysis method is applied;

[0041] Fig. 2 is a step flow chart of a first embodiment of the network anomaly analysis method provided by the present application;

[0042] Fig. 3 is a structure example diagram of a first embodiment of the transport network provided by the present application;

[0043] Fig. 4 is a step flow chart of a second embodiment of the network anomaly analysis method provided by the present application;

[0044] Fig. 5 is a structure example diagram of a second embodiment of the transport network provided by the present application;

[0045] Fig. 6 is a structure example diagram of an embodiment of the display model provided by the present application;

[0046] Fig. 7 is a schematic block diagram of an embodiment of the network management device provided by the present application;

[0047] Fig. 8 is a schematic block diagram of another embodiment of the network management device provided by the present application;

[0048] Fig. 9 is a schematic diagram of an embodiment of the chip provided by the present application. DETAILED DESCRIPTION

[0049] In order to better understand the network anomaly analysis method provided by the embodiments of the present application, first, the structure of the communication system to which the method provided by the present application is applied will be described in combination with Fig. 1. Fig. 1 is a structure example diagram of a communication system to which the network anomaly analysis method is applied.

[0050] The communication system 100 includes a first network domain 110, a transport network 120, and a second network domain 130. The transport network 120 is configured to connect the first network domain 110 and the second network domain 130, and to implement transmission of services between the first network domain 110 and the second network domain 130. The transport network 120 includes a plurality of optical devices. The type of the optical devices is not limited, as long as one or more optical devices connected between the first network domain 110 and the second network domain 130 can implement transmission of services between the first network domain 110 and the second network domain 130. For example, the transport network 120 can be an optical transport network (OTN), and each optical device can be a transport device. For another example, the type of the transport network 120 can also be a synchronous digital hierarchy (SDH) network, a packet transport network (PTN), a microwave transmission network, etc., and is not limited. The first network domain 110 and the second network domain 130 can be an internet protocol (IP) network, etc.

[0051] Specifically, the transport network 120 can include a plurality of transport routes. Each transport route included in the transport network 120 is connected between the first network domain 110 and the second network domain 130, and different transport routes include different optical devices and / or different numbers of optical devices. For example, one transport route includes the optical device 121 and the optical device 123. For another example, another transport route includes the optical device 121 and the optical device 124. It should be noted that the optical devices included in the transport route and the number of the optical devices are not limited. In this example, different transport routes can correspond to different bandwidths and / or different time delays. Transmission of different services between the first network domain 110 and the second network domain 130 through different transport routes can achieve bandwidth isolation and stable time delay.

[0052] The transmission network 120 shown in the example further includes a network management device 140 connected with each optical device, for example, the network management device 140 is connected with the optical device 121, the optical device 122, the optical device 123 and the optical device 124 respectively. The network management device 140 centrally controls the transmission network 120. For example, the first network domain 110 and the second network domain 130 can both be server-side network domains. Taking the first network domain 110 as an example, the first network domain 110 can include network devices connected with the optical device 121 and the optical device 122 respectively, and the network devices can be routers or switches. Each network device can be connected with one or more servers. It should be noted that the number of network devices included in the first network domain 110 and the number of network devices connected with the same optical device are not limited in the example. For the second network domain 130, please refer to the description of the first network domain 110, and details are not described herein. For another example, the first network domain 110 can be a user-side network domain, and the second network domain 130 can be a server-side network domain. Alternatively, the first network domain 110 can be a server-side network domain, and the second network domain 130 can be a user-side network domain. Taking the first network domain 110 as a user-side network domain as an example, the first network domain 110 can include an optical line terminal (OLT) connected with the optical device 121. It should be noted that the number of OLTs included in the first network domain 110, the specific optical devices connected with the OLTs, and the number of OLTs connected with the same optical device are not limited in the example. Each OLT is further connected with one or more optical network units (ONUs), and the number of ONU connected with the OLT is not limited in the example. The ONU included in the first network domain 110 can be connected with one or more user devices, which can be referred to as terminals, mobile stations (MS) or mobile terminals (MT), etc. Specifically, the user device can be a mobile phone, a tablet computer or a computer with wireless transceiver function. The user device can also be a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in remote medical treatment, a wireless terminal in smart power grid, a wireless terminal in smart city, a wireless terminal in smart home, a vehicle-mounted terminal, etc., without limitation.

[0053] It should be noted that FIG. 1 is only an exemplary diagram, and the number of devices included is not limited. In addition, the communication system can include other devices in addition to the devices shown in FIG. 1. The names of the devices in FIG. 1, the names of the transmission routes are not limited, and in addition to the names shown in FIG. 1, the devices, the transmission routes can also be named as other names, for example, when the first network domain and the second network domain communicate through the OTN, the transmission route can also be named as an OTN pipe, etc., which is not limited.

[0054] Based on the communication system shown in FIG. 1, the network exception analysis method provided by the embodiments of the present application is explained in combination with FIG. 2. Wherein, FIG. 2 is a first embodiment step flow chart of the network exception analysis method provided by the present application. It should be clear that the target optical device for executing the method of the present embodiment can be a logical module, a network protocol stack, a software protocol stack, a transmission protocol stack, a component or device (such as a processor, a chip, a network card, etc.) included in the target optical device. Wherein, the software protocol stack can be in the kernel state or in the user state. The network management device for executing the method of the present embodiment can be a logical module, a network protocol stack, a software protocol stack, a transmission protocol stack, a component or device (such as a processor, a chip, a network card, etc.) included in the network management device.

[0055] Step 201, the target optical device sends an exception message to the network management device.

[0056] Figure 3 is a diagram illustrating an example of a first embodiment of a transport network provided by the present application. The transport network shown in this embodiment includes multiple layers, for example, the transport network includes a cable layer 300, an optical layer 310, an electrical layer 320, and a service layer 330. The cable layer 300 includes a fiber span 301, and an optical device 311 of the optical layer 310 is connected to a first network domain via the fiber span 301 and receives a first service optical signal from the first network domain via the fiber span 301, the first service optical signal carries a first frame, and the first frame supports the same protocol as the first network domain. The optical device 311 performs optical-electric conversion on the first service optical signal to obtain a first service electrical signal, and sends the first service electrical signal to an electrical node 321, which can demodulate the first service electrical signal to obtain a target service and send the target service to a service node 331, which encapsulates the target service into a transport frame, for example, an ODU. The service node 331 sends the transport frame to the electrical node 321, and the electrical node 321 processes the transport frame to obtain an electrical signal, for example, the electrical node 321 performs signal amplification, signal filtering, signal shaping, signal error correction, etc., which are not limited in particular. The electrical node 321 sends the electrical signal to the optical device 311 of the optical layer 310, which performs electric-optical conversion on the electrical signal to obtain an optical signal and sends the optical signal to an optical device 312 via a fiber span 302. The optical device 312 is configured to cross the transmission optical path of the optical signal and sends the optical signal to an optical device 313 via a fiber span 303, which can perform optical-electric conversion on the optical signal to obtain an electrical signal and send the electrical signal to an electrical node 322, which performs signal amplification, signal filtering, signal shaping, signal error correction, etc., on the electrical signal and returns the processed electrical signal to the optical device 313, which performs electric-optical conversion on the electrical signal to obtain an optical signal and sends the optical signal to an optical device 314 via a fiber span 304, which crosses the transmission optical cable of the optical signal and sends the optical signal to an optical device 315 via a fiber span 305. The optical device 315 performs optical-electric conversion on the optical signal to obtain an electrical signal, and sends the electrical signal to an electrical node 323, which demodulates the electrical signal to obtain a target service and sends the target service to a service node 332, which encapsulates the target service into a second frame, which supports the same protocol as a second network domain. The service node 332 sends the second frame to the electrical node 323, which processes the second frame to obtain a second service electrical signal, which carries the second frame, and sends the second service electrical signal to the optical device 315, which performs electric-optical conversion on the second service electrical signal to obtain a second service optical signal, and sends the second service optical signal to the second network domain.

[0057] It should be noted that the number of optical fiber spans included in the cable layer 300 and the connection relationship, the number of optical devices included in the optical layer 310 and the connection relationship, the number of electrical nodes included in the electrical layer 320 and the connection relationship, and the number of service nodes included in the service layer 330 and the connection relationship are not limited in the embodiment.

[0058] In the embodiment, the optical signal carrying the target service will pass through N optical fiber spans in sequence in the process of transmission in the cable layer 300, where N is any integer not less than 1. For example, in the example shown in FIG. 3, the optical signal carrying the target service passes through the optical fiber span 301, the optical fiber span 302, the optical fiber span 303, the optical fiber span 304, and the optical fiber span 305 in sequence. The optical signal carrying the target service will pass through M optical devices in sequence in the process of transmission in the optical layer 310, where M is any integer not less than 1. For example, in the example shown in FIG. 3, the optical signal carrying the target service passes through the optical device 311, the optical device 312, the optical device 313, the optical device 314, and the optical device 315 in sequence, where the optical device 311 is connected to the optical fiber span 301, the optical device 311 is connected to the optical device 312 through the optical fiber span 302, the optical device 312 is connected to the optical device 313 through the optical fiber span 303, the optical device 313 is connected to the optical device 314 through the optical fiber span 304, and the optical device 314 is connected to the optical device 315 through the optical fiber span 305. The electrical signal carrying the target service will pass through at least one electrical node in the process of transmission in the electrical layer 320. For example, in the example shown in FIG. 3, the electrical signal carrying the target service passes through the electrical node 321, the electrical node 322, and the electrical node 323 in sequence. The target service will pass through two service nodes in the process of transmission in the service layer 330. For example, in the example shown in FIG. 3, the target service passes through the service node 331 and the service node 332 in sequence. It should be noted that the number of optical fiber spans through which the target service passes in the cable layer 300, the number of optical devices through which the target service passes in the optical layer 310, the number of electrical nodes through which the target service passes in the electrical layer 320, and the number of service nodes through which the target service passes in the service layer 330 are not limited in the embodiment.

[0059] The target service transmits in the optical layer 310, and will pass through M optical devices. The target optical device in the embodiment can be each of the M optical devices. The target optical device detects the optical power of the optical signal received through the connected fiber span. For example, the optical device 311 receives the optical signal through the fiber span 301 and detects the optical power of the optical signal. For example, the optical device 311 receives the optical signal from the first network domain through the fiber span 301. The optical device 311 includes a photodetector for detecting the optical power of the optical signal received through the fiber span 301. For example, the photodetector can be a photodiode (PD), an avalanche photodiode (APD), or a photomultiplier tube (PMT), etc. By analogy, the optical device 312 detects the optical power of the optical signal received through the fiber span 302, the optical device 313 detects the optical power of the optical signal received through the fiber span 303, the optical device 314 detects the optical power of the optical signal received through the fiber span 304, and the optical device 315 detects the optical power of the optical signal received through the fiber span 305.

[0060] For example, taking the target optical device as the optical device 312, the optical device 312 sends an exception message to the network management device, and the exception message is used to indicate that the first fiber span 302 is abnormal. The first fiber span 302 is the fiber span connected to the optical device 312. For description of the exception message, refer to the following examples:

[0061] Example 1

[0062] The optical device 312 sends the detected optical power to the network management device. The exception message in the example includes the identification of the first fiber span 302 and the optical power detected by the optical device 312. For example, the optical device 312 detects the optical power of the optical signal received through the first fiber span 302 in the detection period. In order to improve the detection accuracy, the time interval between the detection periods can be milliseconds. The optical device 312 reports the detected optical power in the detection period to the network management device through the exception message. Specifically, the reporting period configured by the optical device 312 includes multiple detection periods. The optical device 312 reports the optical power detected in each detection period to the network management device in the reporting period. Optionally, in order to improve the efficiency of the optical device 312 reporting the optical power of the optical signal transmitted by the first fiber span 302 to the network management device, the optical device 312 can report the maximum value of the optical power and the minimum value of the optical power in the detection period to the network management device. The specific limitation is not limited to reduce the bandwidth occupied by the exception message sent by the optical device 312 to the network management device.

[0063] Example 2

[0064] The optical device 312 detects the deterioration of the first fiber span 302 according to the detected optical power. For example, the optical device 312 presets a first threshold value, and determines that the first fiber span 302 is deteriorated if the optical device 312 detects that the optical power is less than or equal to the first threshold value. If the first fiber span 302 is deteriorated, the signal quality of the optical signal transmitted through the first fiber span 302 is affected. The embodiment does not limit the cause of the deterioration of the first fiber span 302. For example, the first fiber span 302 is bent, the first fiber span 302 is squeezed, the connection between the first fiber span 302 and the optical device 312 is misaligned or not in good contact, the first fiber span 302 is aged, or the first fiber span 302 is contaminated. The abnormal message shown in the example includes the identifier of the first fiber span 302, the detected optical power of the optical device 312, and the deterioration indication information, which indicates that the first fiber span 302 is deteriorated.

[0065] Optionally, the optical device 312 further detects the specific position of the deterioration of the first fiber span 302 if the optical device 312 detects that the optical power received through the first fiber span 302 is less than or equal to the first threshold value. For example, the optical device 312 detects the specific position of the deterioration of the first fiber span 302 based on an optical time domain reflectometer (OTDR), a fiber detector, a fiber analyzer, or the like. The abnormal message shown in the example further includes the deterioration position indication information, which indicates the specific position of the deterioration of the first fiber span 302.

[0066] Optionally, the abnormal message shown in the example includes the identifier of the first fiber span 302, and at least one of the detected optical power of the optical device 312, the deterioration indication information, and the deterioration position indication information.

[0067] Example 3

[0068] The optical device 312 detects the interruption of the first fiber span according to the detected optical power. For example, the optical device 312 presets a second threshold value, and determines that the first fiber span 302 is interrupted if the optical device 312 detects that the optical power received through the first fiber span 302 is less than or equal to the second threshold value or the optical device 312 does not detect the optical power received through the first fiber span 302. The second threshold value is less than the first threshold value. The abnormal message shown in the example includes the identifier of the first fiber span 302, the detected optical power of the optical device 312, and the interruption indication information, which indicates that the first fiber span 302 is interrupted.

[0069] Optionally, upon detecting the interruption via the first fiber span 302, the optical device 312 can further detect the specific location of the interruption in the first fiber span 302. For example, the optical device 312 detects the specific location of the interruption in the first fiber span 302 based on OTDR, fiber detector, fiber analyzer, etc. The abnormality message shown in this example can further include interruption location indication information indicating the specific location of the interruption in the first fiber span 302.

[0070] Optionally, the abnormality message shown in this example includes the identification of the first fiber span 302, and at least one of the optical power detected by the optical device 312, the interruption indication information, and the interruption location indication information.

[0071] Example 4

[0072] Upon detecting the optical power, the optical device 312 detects a flicker in the first fiber span. For example, the optical device 312 detects a significant drop or a dramatic fluctuation in the optical power received via the first fiber span, and determines that a flicker occurs in the first fiber span. As another example, the optical device 312 detects the flicker in the first fiber span 302 based on OTDR, fiber detector, fiber analyzer, etc. The abnormality message shown in this example includes the identification of the first fiber span 302, the optical power detected by the optical device 312, and flicker indication information indicating that a flicker occurs in the first fiber span 302.

[0073] Optionally, upon detecting the flicker via the first fiber span 302, the optical device 312 can further detect the specific location of the flicker in the first fiber span 302. For example, the optical device 312 detects the specific location of the flicker in the first fiber span 302 based on OTDR, fiber detector, fiber analyzer, etc. The abnormality message shown in this example can further include flicker location indication information indicating the specific location of the flicker in the first fiber span 302.

[0074] Optionally, the abnormality message shown in this example includes the identification of the first fiber span 302, and at least one of the optical power detected by the optical device 312, the flicker indication information, and the flicker location indication information.

[0075] In the embodiment, the optical device that detects the abnormal event sends the abnormal message to the network management device. For example, if the optical device detects the abnormal event (such as the degradation, interruption, or flicker described in the above examples), the optical device sends the abnormal message to the network management device. If the optical device does not detect the abnormal event, the optical device does not need to send the abnormal message to the network management device.

[0076] In step 202, the network management device obtains the abnormal event of the first optical layer channel according to the abnormal message.

[0077] The first optical layer channel in the embodiment includes one or more optical channels with full functionality (OCH). It should be noted that the number of OCHs included in the first optical layer channel is not limited in the embodiment, as long as the first optical layer channel can successfully transmit the optical signal carrying the target service. It can be understood that the first optical layer channel includes M optical devices, and the optical signal carrying the target service is transmitted through the M optical devices in sequence. The first optical layer channel also includes N fiber spans, and the optical signal carrying the target service is transmitted through the N fiber spans in sequence. For the description of the M optical devices and the N fiber spans, please refer to step 301, and the specific description is omitted.

[0078] The network management device can obtain the abnormal event of the first optical layer channel according to the following process, wherein the abnormal event of the first optical layer channel corresponds to the abnormal message.

[0079] First, the network management device determines the abnormal event of the first fiber span according to the abnormal message.

[0080] For example, if the abnormal message is as shown in Example 1, the network management device detects the abnormal event of the first fiber span 302 according to the optical power included in the abnormal message. For example, if the network management device detects that the optical power included in the abnormal message is less than or equal to a first threshold value, it is determined that the abnormal event of the first fiber span 302 is degradation. For another example, if the network management device detects that the optical power included in the abnormal message is less than or equal to a second threshold value, it is determined that the abnormal event of the first fiber span 302 is interruption of the first fiber span 302. For another example, if the network management device detects that the optical power included in the abnormal message decreases significantly or fluctuates sharply, it is determined that the abnormal event of the first fiber span is flicker of the first fiber span 302.

[0081] For example, if the abnormal message is as shown in the above example 2, the network management device directly determines, according to the degradation indication information included in the abnormal message, that the abnormal event of the first fiber span 302 is that the first fiber span 302 has degradation. If the abnormal message includes degradation location indication information, the network management device can also directly determine the specific location of the degradation in the first fiber span 302.

[0082] For example, if the abnormal message is as shown in the above example 3, the network management device directly determines, according to the interruption indication information included in the abnormal message, that the abnormal event of the first fiber span 302 is that the first fiber span 302 has interruption. If the abnormal message includes interruption location indication information, the network management device can also directly determine the specific location of the interruption in the first fiber span 302.

[0083] For example, if the abnormal message is as shown in the above example 4, the network management device directly determines, according to the flash interruption indication information included in the abnormal message, that the abnormal event of the first fiber span 302 is that the first fiber span 302 has flash interruption. If the abnormal message includes flash interruption location indication information, the network management device can also directly determine the specific location of the flash interruption in the first fiber span 302.

[0084] Secondly, the network management device determines the abnormal event of the first optical layer channel according to the abnormal event of the first fiber span.

[0085] Example 1. This example takes the case that the network management device detects that the abnormal event of the first fiber span is degradation as an example:

[0086] The network management device has created a first correspondence relationship, which includes the correspondence relationship between the identifier of the first optical layer channel and the identifiers of the N fiber spans through which the optical signal carrying the target service is transmitted. It can be understood that the identifiers of the N fiber spans include the identifier of the first fiber span shown above. In combination with FIG. 3, the first correspondence relationship is shown in Table 1:

[0087] Table 1

[0088] It can be understood that the transmission of the target service is through a first optical layer channel with an identifier P0, for example, the example shown in FIG. 3, the first optical layer channel with the identifier P0 includes the optical device 311, the optical device 312, the optical device 313, the optical device 314 and the optical device 315. The first correspondence includes the identifiers of the N fiber spans corresponding to the identifier P0 of the first optical layer channel, the N fiber spans are used to connect the optical device 311, the optical device 312, the optical device 313, the optical device 314 and the optical device 315 in sequence to successfully transmit the optical signal carrying the target service. Then, the identifiers of the N fiber spans specifically include the identifier P1 of the fiber span 301, the identifier P2 of the fiber span 302, the identifier P3 of the fiber span 303, the identifier P4 of the fiber span 304 and the identifier P5 of the fiber span 305. Because the abnormal messages received by the network management device from each optical device already include the identifier of the fiber span, for example, the abnormal message received by the network management device from the optical device 311 already includes the identifier P1 of the fiber span 301, and so on, the abnormal message received from the optical device 315 already includes the identifier P5 of the fiber span 305. Then, the network management device can obtain the identifier P0 of the first optical layer channel corresponding to the identifier P1, the identifier P2, the identifier P3, the identifier P4 and the identifier P5 by querying in the manner shown in Table 1. In the case where the network management device determines that the first fiber span 302 has the above-mentioned abnormal event, the network management device determines whether the abnormal event of the first fiber span 302 will cause the first optical layer channel to have an abnormal event. For example, if the network management device determines that the abnormal event of the first fiber span 302 is degradation, the network management device obtains a preset OCH performance analysis model, and takes the abnormal messages reported by each optical device included in the first optical layer channel as the input of the OCH performance analysis model, for example, the example shown in FIG. 3, the target service passes through the first optical layer channel including five optical devices, then each optical device will report an abnormal message to the network management device, that is, the optical device 311, the optical device 312, the optical device 313, the optical device 314 and the optical device 315 respectively send an abnormal message to the network management device, for details, please refer to the description of the target optical device 311 sending an abnormal message to the network management device shown in step 201. Taking the optical power detected by each optical device as an example, the OCH performance analysis model can directly output a performance degradation parameter corresponding to the first optical layer channel, if the network management device determines that the performance degradation parameter is greater than or equal to a third threshold value, it is determined that the first optical layer channel has an abnormal event, and the abnormal event is a degradation abnormal event of the first optical layer channel. The performance degradation parameter is not limited in the embodiment, for example, the performance degradation parameter can be an optical signal-to-noise ratio (OSNR) or a quality factor (Q) value.It should be noted that the embodiment does not limit the type of performance degradation parameter, as long as the size of the performance degradation parameter can reflect whether the abnormal event of degradation occurs in the first optical layer channel. The embodiment does not limit the OCH performance model, for example, the OCH performance model can be an artificial intelligence (AI) model or a physical model.

[0089] If the network management device determines that at least one of the M fiber spans has an abnormal event of degradation that causes the abnormal event of degradation in the first optical layer channel, the network management device obtains the corresponding relationship as shown in Table 2:

[0090] Table 2

[0091] The network management device shown in the example can also detect whether the error rate is over limit according to the optical power included in the abnormal message reported by the optical device. For example, the error rate can be pre-correction error rate or post-correction error rate, which is not limited. Taking the target optical device 311 as an example, the network management device detects the pre-correction error rate of the optical signal transmitted by the first fiber span 301 according to the optical power included in the abnormal message from the target optical device 311. The pre-correction error rate of the optical signal transmitted by the first fiber span 301 refers to the ratio of the number of existing errors in the optical signal transmitted by the first fiber span 301 to the total number of transmission bits. The post-correction error rate refers to the ratio of the number of errors that still exist after the target service is processed by the forward error correction (FEC) technology to the total number of transmission bits. If the network management device detects that the error rate is greater than the error rate threshold, it is determined that the abnormal event of the first optical layer channel is that the error rate is over limit, and the network management device can obtain the corresponding relationship as shown in Table 3:

[0092] Table 3

[0093] Example 2

[0094] The example takes the interruption of the abnormal event of the first fiber span detected by the network management device as an example, then the network management device can directly create the corresponding relationship shown in Table 4, it can be understood that if the first fiber span included in the first optical layer channel has an abnormal event of interruption, the abnormal event of the first optical layer channel is interruption.

[0095] Table 4

[0096] Example 3

[0097] The example takes the first fiber span as an example. If the network management device detects the abnormal event of the first fiber span as a flash, the network management device can directly create the corresponding relationship shown in Table 5. It can be understood that if the first fiber span included in the first optical layer channel has an abnormal event of flash, the abnormal event of the first optical layer channel is flash.

[0098] Table 5

[0099] Because the first optical layer channel includes N fiber spans, the transmission of the optical signal carrying the target service successively passes through the N fiber spans. For example, as shown in FIG. 3, the transmission of the optical signal carrying the target service successively passes through fiber span 301, fiber span 302, fiber span 303, fiber span 304, and fiber span 305. If the fiber span transmits the optical signal with a flash, it will cause the downstream fiber span to transmit the optical signal with a flash. For example, if the fiber span 304 transmits the optical signal with a flash, it will cause the downstream fiber span 305 to transmit the optical signal with a flash. It can be understood that if the network management device determines that the fiber span 304 has a flash, the flash may be caused by the upstream fiber span 303 or may be caused by the fiber span 304 itself, such as fiber span 304 failure, fiber joint failure, optical signal interference, etc. In order to determine the cause of the flash, the network management device determines that the first fiber span that has a flash in the process of transmitting the target service of the N fiber spans is caused by the abnormality of the fiber span itself. For example, the network management device detects that the fiber span 303, the fiber span 304, and the fiber span 305 all have a flash, and the network management device determines that the first fiber span that has a flash among the fiber span 303, the fiber span 304, and the fiber span 305 is the fiber span 303. Then, the flash of the fiber span 304 and the fiber span 305 is caused by the flash of the fiber span 303, and the flash of the fiber span 303 is caused by the fiber span 303 itself.

[0100] It should be noted that the above description of the abnormal event type of the first fiber span and the description of the abnormal event type of the first optical layer channel are optional examples and are not limited. As long as the network management device can obtain the corresponding abnormal event of the first optical layer channel according to the abnormal event of the first fiber span.

[0101] Step 203, the network management device obtains the abnormal event of the first electrical layer channel.

[0102] In combination with FIG. 3, the electrical layer 320 of the transport network includes a first electrical layer channel through which the electrical signals carrying the target service pass. The first electrical layer channel corresponds to the first optical layer channel. For example, the first electrical layer channel can be an ODU, and the ODU as the first electrical layer channel can correspond to K OCHs, where K is any integer no less than 1. Continuing to refer to the example shown in FIG. 3, the first electrical layer channel includes the electrical signals carrying the target service, which pass through the electrical node 321, the electrical node 322, and the electrical node 323 in sequence.

[0103] The network management device has created a second correspondence relationship including a correspondence relationship between the identifier of the first optical layer channel and the identifier of the first electrical layer channel, which can be seen from Table 6:

[0104] Table 6

[0105] As shown in Table 6, the network management device obtains the identifier W0 of the corresponding first electrical layer channel according to the identifier P0 of the first optical layer channel, and then obtains the first electrical layer channel with the identifier W0. In the case where the network management device obtains the identifier of the first electrical layer channel, the network management device obtains the abnormal event of the first electrical layer channel with the identifier W0, wherein the abnormal event of the first electrical layer channel corresponds to the abnormal event of the first optical layer channel. For the abnormal event of the first electrical layer channel, please refer to the correspondence relationship between the abnormal event of the fiber span, the abnormal event of the first optical layer channel, and the abnormal event of the first electrical layer channel shown in Table 7 below:

[0106] Table 7

[0107] It can be understood that if the abnormal event of the first optical layer channel is degradation, then the abnormal event of the first electrical layer channel also corresponds to degradation. If the abnormal event of the first optical layer channel is out-of-limit of the bit error rate, then the abnormal event of the first electrical layer channel also corresponds to out-of-limit of the bit error rate. If the abnormal event of the first optical layer channel is interruption, then the abnormal event of the first electrical layer channel corresponds to interruption, and if the abnormal event of the first optical layer channel is flicker, then the abnormal event of the first electrical layer channel is flicker.

[0108] In step 204, the network management device obtains the abnormal event of the target service.

[0109] Through the above steps, in the case where the network management device detects the first fiber span, the first optical layer channel, and the first electrical layer channel with the abnormal event, the identifier of the target service affected by the abnormal event of the first fiber span, the abnormal event of the first optical layer channel, and the abnormal event of the first electrical layer channel is obtained. Specifically, the network management device has created a third correspondence relationship including a correspondence relationship between the identifier of the first electrical layer channel and the identifier of the target service, which can be seen from Table 8:

[0110] Table 8

[0111] As shown in Table 8, the network management device obtains the identifier W1 of the target service according to the identifier W0 of the first electrical layer channel, and then the target service with the identifier W1 is the service affected by the abnormal event of the first fiber span, the abnormal event of the first optical layer channel, and the abnormal event of the first electrical layer channel. The abnormal event of the target service corresponds to the abnormal event of the first electrical layer channel, and details can be referred to Table 9. Table 9 includes the correspondence between the abnormal event of the fiber span, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel, and the abnormal event of the target service.

[0112] Table 9

[0113] It can be understood that if the first electrical layer channel has a degradation abnormal event, the target service also has a corresponding degradation event. If the first electrical layer channel has a bit error rate exceeding limit abnormal event, the target service also has a corresponding bit error rate exceeding limit abnormal event. Specifically, if the first electrical layer channel has a bit error rate exceeding limit abnormal event, the abnormal event of the target service is that the pre-correction bit error rate or the post-correction bit error rate is greater than or equal to a threshold value. If the first electrical layer channel has a degradation abnormal event, the target service has a corresponding packet loss rate exceeding limit abnormal event. If the first electrical layer channel has an interruption abnormal event, the target service also has a corresponding interruption abnormal event. If the first electrical layer channel has a flash interruption abnormal event, the target service also has a corresponding flash interruption abnormal event.

[0114] Step 205, the network management device displays a target interface.

[0115] In this embodiment, the network management device can display the target interface in a visual manner. The target interface includes a target correspondence relationship, which includes the correspondence between the abnormal event of the first fiber span, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel, and the abnormal event of the target service. This embodiment does not limit the specific display form of the target interface. For example, the target interface can directly display a table as shown in Table 9. For another example, the target interface can display the target correspondence relationship through specific graphics, such as a semicircle, a circle, a triangle, an irregular shape, etc. For another example, the target interface can display the target correspondence relationship through a specific structure, such as a data dashboard. For another example, the target interface can display the target correspondence relationship in a three-dimensional (3D) form.

[0116] The step 205 shown in this embodiment is an optional step and is not limited.

[0117] With the method shown in the embodiment, when the network management device detects that an abnormal event occurs in the first fiber span through which the target service is transmitted, the network management device detects an abnormal event of the first optical layer channel caused by the abnormal event of the first fiber span, detects an abnormal event of the first electrical layer channel caused by the abnormal event of the first optical layer channel, and detects an abnormal event of the target service caused by the abnormal event of the first electrical layer channel. The target service is transmitted through the first fiber span in the cable layer, through the first optical layer channel in the optical layer, and through the first electrical layer channel in the electrical layer. Therefore, based on the abnormal event of the first fiber span, the abnormal event of the first fiber span can be analyzed in combination with the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel, and the abnormal event of the target service, the cooperative analysis capability of the transport network fault event is improved, and in the case that an abnormal event occurs in the cable layer, hidden dangers caused by the first optical layer channel and the first electrical layer channel to the transmission of the target service can be found in time, and an abnormal event of the target service in the service layer is detected, the comprehensiveness of hidden danger analysis is improved, and the efficiency of hidden danger finding is improved.

[0118] FIG. 4 is a step flowchart of a second embodiment of the network abnormality analysis method provided in the application.

[0119] In step 401, the target optical device sends an abnormality message including the identification of a pair of fiber spans in the same cable or the same trench to the network management device.

[0120] Referring to FIG. 5, wherein FIG. 5 is a structural example diagram of a second embodiment of the transport network provided in the application. The transport network shown in FIG. 5 includes a cable layer 300, an optical layer 310, an electrical layer 320, and a service layer 330. For the description of the cable layer 300, the optical layer 310, the electrical layer 320, and the service layer 330, please refer to the corresponding description of FIG. 3, and details are not described herein. The difference between the transport network shown in FIG. 5 and the transport network shown in FIG. 3 is that the route of the target service shown in FIG. 5 includes a working route and a protection route. For example, in the cable layer 300, the working route includes the fiber spans 301, 302, 303, 304, and 305 connected in sequence, and the protection route includes the fiber spans 501, 502, 503, and 504 connected in sequence. For another example, in the optical layer 310, the working route includes the optical devices 311, 312, 313, 314, and 315 connected in sequence, and the protection route includes the optical devices 311, 511, 313, and 315 connected in sequence. For another example, in the electrical layer 320, the working route includes the electrical nodes 321, 322, and 323 connected in sequence, and the protection route includes the electrical nodes 321, 322, and 521. In the service layer 330, both the working route and the protection route correspond to the service nodes 331 and 332.

[0121] The working route and the protection route are a pair of routes for primary and backup protection. For example, if the working route fails to successfully transmit the target service, the protection route is used to replace the working route to transmit the target service through the protection route. The target optical device is connected to the first fiber span and the second fiber span at the same time, wherein the working route includes the first fiber span and the protection route includes the second fiber span. If the target optical device detects that the first fiber span and the second fiber span are a pair of fiber spans in the same cable or the same trench, the abnormal message includes the identification of the first fiber span and the identification of the second fiber span, and the abnormal message is used to indicate that the first fiber span and the second fiber span are a pair of fiber spans in the same cable or the same trench. Wherein, the same cable means that the optical fiber used by the first fiber span and the optical fiber used by the second fiber span are located in the same fiber span. It can be understood that the first fiber span and the second fiber span in the same cable state share the same physical path, and if the physical path is affected (for example, construction, damage, bending, vibration, etc.), the impact will affect the first fiber span and the second fiber span at the same time. The same trench means that the first fiber span and the second fiber span use different fiber spans in the same pipe or trench, and the first fiber span and the second fiber span in the same trench are physically separated, but since they share the same trench or pipe, if the pipe or trench is affected (for example, construction, damage, bending, vibration, etc.), the impact will affect the first fiber span and the second fiber span at the same time.

[0122] The transmission network shown in the embodiment includes a plurality of optical devices, and the target optical device is an optical device connecting the first fiber span and the second fiber span in the plurality of optical devices. In the embodiment, the working route includes the first fiber span and the protection route includes the second fiber span, and in other examples, the working route can include the second fiber span and the protection route includes the first fiber span. As shown in the example of FIG. 5, the target optical device is the optical device 313, and in the example, the first fiber span and the second fiber span are connected to the optical device 313, and the outgoing fiber span for sending optical signals is taken as an example. The embodiment does not limit the manner in which the optical device 313 detects that the first fiber span 304 and the second fiber span 504 are in the same cable or the same trench, for example, the optical device 313 can be connected to W fiber spans, and the first fiber span 304 and the second fiber span 504 are two of the W fiber spans. For this purpose, the optical device 313 needs to divide the W fiber spans into a plurality of detection groups, and each detection group includes a pair of fiber spans in the W fiber spans. The optical device 313 can detect the characteristic data of the first fiber span 304 and the characteristic data of the second fiber span 504 based on a detection technology, and if the characteristic data of the first fiber span 304 is consistent or approximately consistent with the characteristic data of the second fiber span 504, the first fiber span 304 and the second fiber span 504 are in the same cable or the same trench. The detection technology can be based on detection technologies realized by Rayleigh scattering effect, Brillouin scattering effect, Raman scattering effect, and optical polarization change.

[0123] In the embodiment, the first fiber span and the second fiber span are connected to the same target optical device, and in other examples, the first fiber span and the second fiber span can be connected to different optical devices. The different optical devices will report the characteristic data of the connected fiber spans detected by the abnormal message to the network management device, and the network management device will obtain the first fiber span and the second fiber span in the same cable or the same trench according to the characteristic data of the different fiber spans.

[0124] In step 402, the network management device obtains the abnormal events of the first optical layer channel and the second optical layer channel according to the abnormal message.

[0125] The network management device has previously created a correspondence between the identifier of the first fiber span included in the exception message and the identifier of the first optical layer channel. The specific correspondence is shown in step 202 of FIG. 2, and a detailed description is not repeated. The network management device has also created a correspondence between the identifier of the second fiber span included in the exception message and the identifier of the second optical layer channel. The specific correspondence is described in the correspondence between the identifier of the first fiber span and the identifier of the first optical layer channel, and a detailed description is not repeated. If the working route includes the first optical layer channel and the protection route includes the second optical layer channel, if the first optical layer channel carrying the target service fails, the first optical layer channel is switched to the second optical layer channel to realize the transmission of the target service. Continuing to refer to the example shown in FIG. 5, if the first fiber span 304 and the second fiber span 504 are fiber spans in the same cable or the same trench, the first optical layer channel and the second optical layer channel at least include the same optical device (i.e., the optical device 313).

[0126] In the case where the network management device obtains the identifier of the first optical layer channel and the identifier of the second optical layer channel, the exception events corresponding to the first optical layer channel and the second optical layer channel can be obtained, wherein the exception events of the first optical layer channel and the second optical layer channel correspond to the exception event indicated by the exception message. In the case where the exception message includes the identifier of a pair of fiber spans in the same cable or the same trench (for example, the identifier of the fiber span 304 and the identifier of the fiber span 504), the exception events of the first optical layer channel and the second optical layer channel are that the first optical layer channel and the second optical layer channel have a shared risk link group (SRLG). It can be understood that in the case where the first optical layer channel and the second optical layer channel have an SRLG, it is indicated that the first optical layer channel and the second optical layer channel include at least a pair of fiber span pairs in the same cable or the same trench, for example, as shown in Table 10 below:

[0127] Table 10

[0128] It can be understood that because the exception events of the first optical layer channel and the second optical layer channel have an SRLG, if the first optical layer channel has an exception, because the first fiber span and the second fiber span are in the same cable or the same trench, the second optical layer channel will also have an exception, which will cause the working route and the protection route carrying the target service to fail at the same time, and further cause the first optical layer channel and the second optical layer channel to fail to achieve the purpose of mutual protection, thereby increasing the possibility of failure of the target service transmission.

[0129] It can be understood that if the working route appears abnormal conditions such as flash-off, interruption, degradation, etc., the optical layer will switch the route of the transmission target service from the working route to the protection route. For this reason, the abnormal message sent by the optical device to the network management device further includes switching indication information, which is used to indicate that the route of the transmission target service is switched from the working route to the protection route. For this reason, the network management device configures the corresponding relationship as shown in Table 11 according to the switching indication information:

[0130] Table 11

[0131] The working route exception shown in Table 11 can mean that at least one fiber span included in the working route appears events such as flash-off, interruption or degradation, and the change of the optical layer route means that the route of the transmission target service is switched from the working route to the protection route.

[0132] Optionally, the target optical device shown in the embodiment can also send a probe light signal to the second fiber span included in the protection route through the OTDR. The target optical device detects whether the second fiber span appears degradation, interruption, flash-off, etc. through the reflected light signal returned through the second fiber span. The target optical device can report the detected abnormal events of the second fiber span to the network management device through the abnormal message. The network management device can create the corresponding relationship as shown in Table 12:

[0133] Table 12

[0134] The protection fiber span shown in Table 12 is the second fiber span shown above, and the protection optical layer channel is the optical layer channel corresponding to the second fiber span. For the corresponding relationship between the abnormal events of the fiber span shown in Table 12 and the abnormal events of the optical layer channel, please refer to the above description of the corresponding relationship between the abnormal events of the fiber span and the abnormal events of the optical layer channel of the corresponding fiber span of Table 2, and the specific description is omitted.

[0135] Step 403, the network management device obtains the abnormal events of the first electrical layer channel and the second electrical layer channel.

[0136] The network management device has previously created a correspondence between the identifier of the first optical layer channel and the identifier of the first electrical layer channel. For a specific correspondence, refer to the description of step 203 in FIG. 2, and a detailed description is omitted. The network management device also creates a correspondence between the identifier of the second optical layer channel and the identifier of the second electrical layer channel. For a specific description, refer to the description of the correspondence between the identifier of the first optical layer channel and the identifier of the first electrical layer channel, and a detailed description is omitted. It can be understood that the working route includes the first electrical layer channel, and the protection route includes the second electrical layer channel. Therefore, if the first electrical layer channel that transmits the target service fails, the first electrical layer channel is switched to the second electrical layer channel to realize the transmission of the target service. Continuing to refer to the example shown in FIG. 5, if the first fiber span 304 and the second fiber span 504 are the same cable or the same trench fiber span, the first electrical layer channel and the second electrical layer channel at least include the same electrical node (for example, the electrical node 322).

[0137] In the case that the network management device obtains the abnormal event of the fiber span and the abnormal event of the optical layer channel, the corresponding abnormal event of the electrical layer channel can be obtained. For details, refer to Table 13 shown in the table:

[0138] Table 13

[0139] It can be understood that if the abnormal event of the optical layer channel is that the abnormal event of the first optical layer channel and the second optical layer channel has SRLG, then the abnormal event of the electrical layer channel is that the first electrical layer channel and the second electrical layer channel have SRLG. If the optical layer route of the first optical layer channel changes, that is, on the optical layer, the route of the target service transmission is switched from the working route to the protection route, then the electrical layer route of the first electrical layer channel changes, that is, on the electrical layer, the route of the target service transmission is switched from the working route to the protection route. If the protection optical layer channel deteriorates, then the protection electrical layer channel corresponding to the protection optical layer channel deteriorates, wherein the protection electrical layer channel corresponds to the second fiber span. If the error rate of the protection optical layer channel exceeds the limit, then the error rate of the protection electrical layer channel corresponding to the protection optical layer channel exceeds the limit. If the protection optical layer channel is interrupted, then the protection electrical layer channel corresponding to the protection optical layer channel is interrupted. If the protection optical layer channel is interrupted, then the protection electrical layer channel corresponding to the protection optical layer channel is interrupted.

[0140] Step 404, the network management device obtains the abnormal event of the target service.

[0141] The network management device obtains the target service corresponding to the first electrical layer channel and the second electrical layer channel. For details, refer to step 204 in FIG. 2, and a detailed description is omitted. In the case that the network management device obtains the target service, the abnormal event corresponding to the target service can be obtained, and the abnormal event of the target service can be referred to Table 14 shown in the table:

[0142] Table 14

[0143] It can be understood that if the abnormal event of the electrical layer channel is that the first electrical layer channel and the second electrical layer channel have SRLG, then the abnormal event of the target service is that the working path and the protection path of the target service have SRLG, that is, the working route and the protection route for transmitting the target service at least partially overlap, reducing the reliability of the transmission of the target service. If the abnormal event of the electrical layer channel is that the electrical layer route of the first electrical layer channel changes, then the route for transmitting the target service is switched from the working route to the protection route, and then in the process of switching from the working route to the protection route, the target service has the risk of flickering, so that the abnormal event of the target service is target service flickering. If the abnormal event of the electrical layer channel is that the protection electrical layer channel deteriorates, then the target service transmitted through the protection route will have the abnormal event of deterioration. If the abnormal event of the electrical layer channel is that the protection electrical layer channel has an error code rate exceeding the limit, then the abnormal event of the target service is that the target service has an error code rate exceeding the limit or a packet loss rate exceeding the limit. If the abnormal event of the electrical layer channel is that the protection electrical layer channel is interrupted, then the abnormal event of the target service is that the protection of the target service is degraded. Specifically, because the protection route is interrupted, the protection route cannot achieve the purpose of transmitting the target service, so that the protection route fails, and then the transmission of the target service cannot be successfully guaranteed through the protection route, so that the abnormal event of the target service is that the protection of the target service is degraded. If the abnormal event of the electrical layer channel is that the protection electrical layer channel flickers, then the abnormal event of the target service is target service flickering.

[0144] Step 405, the network management device displays a target interface.

[0145] The description of the process of step 405 shown in this embodiment is shown in step 405 shown in FIG. 2, and will not be repeated here.

[0146] By using the method shown in this embodiment, the transmission network includes a working route and a protection route. If the route for transmitting the target service is switched from the working route to the protection route, the method shown in this embodiment can detect the abnormal event of the first optical layer channel and the second optical layer channel caused by the switching, then detect the abnormal event of the first electrical layer channel and the second electrical layer channel caused by the abnormal event of the first optical layer channel and the second optical layer channel, and then detect the abnormal event of the target service caused by the abnormal event of the first electrical layer channel and the second electrical layer channel. Then, the abnormal event of the cable layer, the abnormal event of the optical layer, the abnormal event of the electrical layer and the abnormal event of the service layer caused by the process of switching from the working route to the protection route can be analyzed in coordination, the comprehensive analysis of the hidden danger is improved, and the efficiency of hidden danger discovery is improved.

[0147] In the embodiments shown in FIG. 2 and FIG. 4, the display form of the target interface is not limited, for example, FIG. 6 is an embodiment structure example of the display model provided by the present application. The example shown in FIG. 6 takes a semi-circular structure of the display model as an example. The area close to the center of the circle in the display model shown in FIG. 6 can display multiple dimensions, for example, bandwidth dimension, availability dimension and latency dimension. Different dimensions reflect the corresponding relationship between different abnormal events of cable layer, optical layer, electrical layer and service layer. It should be noted that the description of the type and number of dimensions included in the display model in the present embodiment is only an optional example and is not limited. The abnormal events of the cable layer, the optical layer, the electrical layer and the service layer are ordered in descending order according to the distance from the center of the semi-circular. It can be understood that in the display model, the distance between the area displaying the abnormal events of the cable layer and the center, the distance between the area displaying the abnormal events of the optical layer and the center, the distance between the area displaying the abnormal events of the electrical layer and the center, and the distance between the area displaying the abnormal events of the service layer and the center decrease in turn. For example, when the abnormal event of the cable layer corresponding to the bandwidth dimension is degradation, then the abnormal events of the optical layer and the electrical layer are respectively out-of-limit of the bit error rate, and the abnormal event of the service layer is out-of-limit of the bit error rate or out-of-limit of the packet loss rate. For specific description, please refer to the corresponding description in Table 9, and specific details are not described herein. The abnormal events corresponding to the bandwidth dimension shown in the present embodiment can also only include the abnormal events of the service layer, for example, the network management device detects that the utilization rate of the service layer is out-of-limit, wherein the out-of-limit of the utilization rate of the service layer refers to that the utilization rate of various resources (such as servers, network bandwidth, storage devices, etc.) used by the target service exceeds the threshold value, which brings hidden dangers such as performance degradation and service interruption of the target service. For another example, the abnormal events corresponding to the bandwidth dimension can also only include traffic burst of the service layer, etc.

[0148] In the case that the abnormal event of the cable layer corresponding to the availability dimension is interruption, the abnormal event of the optical layer, the abnormal event of the electrical layer and the abnormal event of the service layer are all interruption, which can be seen from the corresponding description in Table 9 and will not be repeated here. In the case that the abnormal event of the cable layer corresponding to the availability dimension is fiber abnormality (such as degradation, flash interruption, interruption, etc.), the abnormal event of the optical layer and the abnormal event of the electrical layer can be optical layer route change and electrical layer route change respectively, and the abnormal event of the service layer is flash interruption, which can be seen from the corresponding description in Table 14 and will not be repeated here. In the case that the abnormal event of the cable layer corresponding to the availability dimension is fiber same cable or same trench, the abnormal event of the optical layer and the abnormal event of the electrical layer are both with SRLG, and the abnormal event of the service layer is that the working path and the protection path of the target service have SRLG, which can be seen from the corresponding description in Table 14 and will not be repeated here. In the case that the abnormal event of the optical layer and the abnormal event of the electrical layer corresponding to the availability dimension are both master-slave shared nodes, the abnormal event of the service layer is that the working path and the protection path of the target service have SRLG, which can be seen from the corresponding description in Table 14 and will not be repeated here. The abnormal event of the optical layer being master-slave shared nodes can mean that the working route and the protection route of the optical layer include at least one same optical device. The abnormal event of the electrical layer being master-slave shared nodes can mean that the working route and the protection route of the electrical layer include at least one same electrical node. The abnormal event of the cable layer corresponding to the availability dimension can be a risk fiber interruption combination, which means that the working route and the protection route for transmitting the target service include at least one same fiber span, the corresponding abnormal event of the optical layer is also a risk optical device combination, which means that the multiple optical devices included in the working route and the multiple optical devices included in the protection route include at least one same optical device, the corresponding abnormal event of the electrical layer is also a risk electrical device combination, which means that the multiple electrical nodes included in the working route and the multiple electrical nodes included in the protection route include at least one same electrical node, and the corresponding abnormal event of the service layer is rerouting risk, wherein the rerouting risk means that in order to ensure the successful transmission of the target service, the network management device needs to configure another route different from the working route and the protection route to transmit the target service through the another route. In the case that the abnormal event of the cable layer corresponding to the availability dimension is interruption, the abnormal event of the optical layer and the abnormal event of the electrical layer are optical layer route change and electrical layer route change respectively, which can be seen from the corresponding description in Table 14 and will not be repeated here, and the abnormal event of the service layer can be working time delay out of limit, that is, in the transmission process of the target service, the optical layer route change and the electrical layer route change may cause the hidden danger of the transmission time delay of the target service out of limit.In the case that the abnormal event of the cable layer corresponding to the availability dimension is a working fiber span bypass, the abnormal event of the optical layer and the abnormal event of the electrical layer are working optical layer path bypass and working electrical layer path bypass respectively, wherein the working fiber span bypass refers to that, in order to ensure successful transmission of the target service, more number and / or longer distance of the working route in the optical fiber span is passed through in the cable layer, the working optical layer path bypass refers to that, in order to ensure successful transmission of the target service, more number of the working route in the optical device is passed through in the optical layer, and the working electrical layer path bypass refers to that, in order to ensure successful transmission of the target service, more number of the working route in the electrical contact point is passed through in the electrical layer, and then the abnormal event of the service layer can be working time delay out of limit. In the case that the abnormal event of the cable layer corresponding to the availability dimension is a protection fiber span bypass, the abnormal event of the optical layer and the abnormal event of the electrical layer are protection optical layer path bypass and protection electrical layer path bypass respectively, wherein the protection fiber span bypass refers to that, in order to ensure successful transmission of the target service, more number and / or longer distance of the protection route in the optical fiber span is passed through in the cable layer, the protection optical layer path bypass refers to that, in order to ensure successful transmission of the target service, more number of the protection route in the optical device is passed through in the optical layer, and the protection electrical layer path bypass refers to that, in order to ensure successful transmission of the target service, more number of the protection route in the electrical contact point is passed through in the electrical layer, and then the abnormal event of the service layer can be protection time delay out of limit.

[0149] It should be noted that the above description of the abnormal events, the arrangement of the abnormal events, and the display of the abnormal events in the display model are all optional examples and are not limited. For example, the abnormal events of different layers are displayed by different colors, such as the color displayed by the abnormal event of the cable layer, the color displayed by the abnormal event of the optical layer, the color displayed by the abnormal event of the electrical layer, and the color displayed by the abnormal event of the service layer, which are different from each other. For another example, the abnormal events of different degrees are displayed by different colors, such as the color displayed by the abnormal event of interruption and the color displayed by the abnormal event of flash interruption.

[0150] FIG. 7 is a schematic block diagram of an embodiment of the network management device provided by the present application. Specifically, the network management device 700 includes a receiving module 701 and a processing module 702. Optionally, the network management device 700 further includes a display module 703. The receiving module 701 and the display module 703 are connected to the processing module 702 respectively.

[0151] The receiving module 701 can also be referred to as a receiver, a receiving unit, a receiving device, a communication interface, or a communication unit. The processing module 702 is configured to implement corresponding processing functions. The display module 703 is configured to implement corresponding display functions.

[0152] Optionally, the network management device 700 further comprises a storage unit, which can be used to store instructions and / or data, and the processing module 702 can read the instructions and / or data in the storage unit to perform corresponding processing control actions.

[0153] For example, the network management device 700 is configured to perform the embodiment corresponding to FIG. 2, the receiving module 701 is configured to perform step 201 to receive the exception message from the target optical device, the processing module 702 is configured to perform steps 202 to 204, and the display module 703 is configured to perform step 205.

[0154] For another example, the network management device 700 is configured to perform the embodiment corresponding to FIG. 4, the receiving module 701 is configured to perform step 401 to receive the exception message from the target optical device, the processing module 702 is configured to perform steps 402 to 404, and the display module 703 is configured to perform step 405.

[0155] It should be understood that the specific processes of the respective modules performing the above corresponding steps have been described in detail in the above method embodiments, and for the sake of brevity, will not be repeated here.

[0156] FIG. 7 illustrates the structure of the network management device from the perspective of software modules, and FIG. 8 illustrates the structure of the network management device from the perspective of hardware. FIG. 8 is a schematic block diagram of another embodiment of the network management device provided in the present application. The network management device 800 specifically includes a processor 801 and a receiver 803. Optionally, the network management device 800 further includes a memory 802. The processor 801 is connected to the memory 802 and the receiver 803 through a system bus 811. The processor 801 can access the memory 802 through the system bus 811, for example, the processor 801 can read and write data in the memory 802 or execute code in the memory 802 through the system bus 811. The system bus 811 can be, for example, a quick path interconnect (QPI) or an ultra path interconnect (UPI). The system bus 811 is divided into an address bus, a data bus, a control bus, etc. The function of the processor 801 is mainly to interpret the instructions (or code) of the computer program and process the data in the computer software. The instructions of the computer program and the data in the computer software can be saved in the memory 802. The processor 801 can include one or more chips or one or more integrated circuits. For example, the processor can include one or more neural processing units (NPUs), optical digital signal processors (oDSPs), field-programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), system on chips (SoCs), central processor units (CPUs), microcontroller units (MCUs), programmable logic devices (PLDs), network card chips, storage interface chips or other integrated chips, without limitation. The receiver 803 can realize communication with the optical device. The receiver 803 can be a module, a circuit, a transceiver or any device capable of realizing communication. The memory 802 is used to store instructions. The instructions can be a computer program.The memory 802 can be a read-only memory (ROM) or other type of static storage device that can store static information and / or instructions, or a random access memory (RAM) or other type of dynamic storage device that can store information and / or instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, an optical disk storage including a compact disc, a laser disc, an optical disc, a digital versatile disc, a Blu-ray disc, and the like, a magnetic disk storage or other magnetic storage devices, and the like, without limitation. It is noted that the memory 802 can exist independently of the processor 801 or can be integrated with the processor 801. The memory 802 can be used to store instructions or program codes or some data, and the like. The memory 802 can be located within the network management device 800 or outside the network management device 800, without limitation. The processor 801 is configured to execute the instructions stored in the memory 802 to implement the method provided by the network management device, and the specific process is described with reference to FIG. 2 or FIG. 4, without limitation.

[0157] FIG. 9 is a schematic diagram of a chip according to an embodiment of the present application. The chip 900 (or also referred to as a processing system) includes a logic circuit 910 and a communication interface 920.

[0158] The logic circuit 910 can be a processing circuit in the chip 900. The logic circuit 910 can be coupled to a storage unit to call instructions in the storage unit, so that the chip 900 can implement the method and function of each embodiment of the present application. The communication interface 920 can be an input / output circuit in the chip 900 to output information processed by the chip 900 or input data or signaling information to be processed by the chip 900.

[0159] Optionally, the logic circuit 910 can be implemented by one or more processors, including the one or more processors or a processing part of the one or more processors.

[0160] Optionally, the communication interface 920 can include a transceiver circuit, a transceiver, an input / output circuit, or a communication interface.

[0161] As a solution, the chip 900 is configured to implement the operations performed by the network management device in the above method embodiments. Specifically, the logic circuit 910 is configured to implement the processing-related operations performed by the network management device in the above method embodiments; and the communication interface 920 is configured to implement the sending and / or receiving-related operations performed by the network management device in the above method embodiments.

[0162] The embodiments of the present application further provide a computer readable storage medium, which has stored thereon computer instructions for implementing the method performed by the network management device in the above method embodiments.

[0163] For example, the computer program is executed by a computer, so that the computer can implement the method performed by the network management device in the above method embodiments.

[0164] The embodiments of the present application further provide a computer program product, which contains instructions, and the instructions are executed by a computer to implement the method performed by the network management device in the above method embodiments.

[0165] The embodiments of the present application further provide a transport network, which includes a network management device, M optical devices and N fiber spans, where M and N are any integers not less than 1, each of the M optical devices is connected to one of the N fiber spans, the network management device is connected to each of the M optical devices, and the structure of the transport network is described in detail with reference to any of the embodiments of FIG. 1, FIG. 3 and FIG. 5, and the network management device is configured to implement the method performed by the network management device in any of the embodiments of FIG. 2 or FIG. 4.

[0166] The above merely illustrates the embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method of analyzing a network anomaly, characterized by, The method comprises: The network management device receives an exception message from a target optical device, the exception message being used to indicate that an exception occurs in a first fiber span, the target optical device being connected to the first fiber span; The network management device obtains an exception event of a first optical layer channel, the first optical layer channel being used to carry transmission of an optical signal of a target service, the first optical layer channel comprising M optical devices and N fiber spans, the M and the N being any integer not less than 1, the M optical devices comprising the target optical device, the N fiber spans comprising the first fiber span, the exception event of the first optical layer channel corresponding to the exception message; The network management device obtains an exception event of a first electrical layer channel, the first electrical layer channel corresponding to the first optical layer channel, the first electrical layer channel being used to carry transmission of an electrical signal of the target service, the exception event of the first electrical layer channel corresponding to the exception event of the first optical layer channel; The network management device obtains an exception event of the target service, the exception event of the target service corresponding to the exception event of the first electrical layer channel.

2. The method of claim 1, wherein, After the network management device obtains the exception event of the target service, the method further comprises: The network management device obtains a correspondence relationship among the exception event of the first fiber span, the exception event of the first optical layer channel, the exception event of the first electrical layer channel and the exception event of the target service, wherein the exception event of the first fiber span corresponds to the exception message.

3. The method of claim 2, wherein, After the network management device obtains the correspondence relationship among the exception event of the first fiber span, the exception event of the first optical layer channel, the exception event of the first electrical layer channel and the exception event of the target service, the method further comprises: The display model of the network management device displays the correspondence relationship among the exception event of the first fiber span, the exception event of the first optical layer channel, the exception event of the first electrical layer channel and the exception event of the target service.

4. The method of claim 3, wherein, The display model is in a semicircular structure, and the exception event of the first fiber span, the exception event of the first optical layer channel, the exception event of the first electrical layer channel and the exception event of the target service are sorted in descending order of distance from the center of the semicircle.

5. The method according to any one of claims 1 to 4, characterized in that, The exception message comprises an identifier of the first fiber span, and before the network management device obtains the exception event of the first optical layer channel, the method further comprises: The network management device obtains the first optical layer channel, an identifier of the first optical layer channel corresponding to the identifier of the first fiber span; Before the network management device obtains the exception event of the first electrical layer channel, the method further comprises: The network management device obtains the first electrical layer channel, an identifier of the first electrical layer channel corresponding to the identifier of the first optical layer channel; Before the network management device obtains the exception event of the target service, the method further comprises: The network management device obtains the target service, an identifier of the target service corresponding to the identifier of the first electrical layer channel.

6. The method according to any one of claims 1 to 5, characterized in that, If the abnormal message is used to indicate that the abnormal event of the first fiber span is a degradation event, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service are respectively a degradation.

7. The method according to any one of claims 1 to 6, characterized in that, If the abnormal message is used to indicate that the abnormal event of the first fiber span is a degradation event, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service are respectively a degradation.

8. The method according to any one of claims 1 to 7, characterized in that, If the abnormal message is used to indicate that the abnormal event of the first fiber span is a degradation event, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service are respectively a degradation.

9. The method according to any one of claims 1 to 8, characterized in that, If the abnormal message is used to indicate that the abnormal event of the first fiber span is a degradation event, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service are respectively a degradation.

10. The method according to any one of claims 1 to 9, characterized in that, If the abnormal message is used to indicate that the abnormal event of the first fiber span is a degradation event, the abnormal event of the first optical layer channel, the abnormal event of the first electrical layer channel and the abnormal event of the target service are respectively a degradation.

11. The method according to any one of claims 1 to 10, characterized in that, The target optical device is further connected with a second fiber span, and the abnormal message is further used to indicate that the first fiber span and the second fiber span are a pair of fiber spans in the same cable or the same trench, and the first fiber span and the second fiber span are both used to transmit the target service, and the abnormal event of the first optical layer channel obtained by the network management device comprises: The network management device obtains the abnormal event of the first optical layer channel and a second optical layer channel, the second optical layer channel comprises the second fiber span, and the abnormal event of the first optical layer channel and the second optical layer channel is a shared risk link group (SRLG), the SRLG comprises an identifier of the first fiber span and an identifier of the second fiber span. The network management device obtains the abnormal event of the first electrical layer channel comprises: The network management device obtains the abnormal event of the first electrical layer channel and a second electrical layer channel, the second electrical layer channel corresponds to the second optical layer channel, and the abnormal event of the first electrical layer channel and the second electrical layer channel is the SRLG. The network management device obtains the abnormal event of the target service comprises: The network management device obtains the abnormal event of the target service is that a route for transmitting the target service has the SRLG.

12. The method of claim 11, wherein, If the transmission of the optical signal carrying the target service is switched from the first fiber span to the second fiber span, the abnormal event of the first optical layer channel and the second optical layer channel is that the optical layer channel for transmitting the optical signal carrying the target service is switched from the first optical layer channel to the second optical layer channel, the abnormal event of the first electrical layer channel and the second electrical layer channel is that the electrical layer channel for transmitting the electrical signal carrying the target service is switched from the first electrical layer channel to the second electrical layer channel, and the abnormal event of the target service is a flash.

13. A network management device, characterized by comprising: Comprise: receive a fault message from a target optical device, the fault message being used to indicate that a first fiber span is abnormal, the target optical device being connected to the first fiber span; the processing module is configured to: obtain a fault event of a first optical layer channel, the first optical layer channel being used to carry transmission of an optical signal of a target service, the first optical layer channel comprising M optical devices and N fiber spans, the M and the N being any integer greater than or equal to 1, the M optical devices comprising the target optical device, the N fiber spans comprising the first fiber span, the fault event of the first optical layer channel corresponding to the fault message; obtain a fault event of a first electrical layer channel, the first electrical layer channel corresponding to the first optical layer channel, the first electrical layer channel being used to carry transmission of an electrical signal of the target service, the fault event of the first electrical layer channel corresponding to the fault event of the first optical layer channel; obtain a fault event of the target service, the fault event of the target service corresponding to the fault event of the first electrical layer channel.

14. The network management device of claim 13, wherein, The processing module is further configured to obtain a correspondence between the fault event of the first fiber span, the fault event of the first optical layer channel, the fault event of the first electrical layer channel and the fault event of the target service, wherein the fault event of the first fiber span corresponds to the fault message.

15. The network management device of claim 14, wherein, The network management device further comprises a display module, the display module being configured to display the correspondence between the fault event of the first fiber span, the fault event of the first optical layer channel, the fault event of the first electrical layer channel and the fault event of the target service.

16. The network management device according to any one of claims 13 to 15, wherein, The target optical device is further connected to a second fiber span, the fault message is further used to indicate that the first fiber span and the second fiber span are a pair of fiber spans in the same cable or the same trench, the first fiber span and the second fiber span are both used to transmit the target service, and the processing module is further configured to: obtain fault events of the first optical layer channel and a second optical layer channel, the second optical layer channel comprising the second fiber span, the fault events of the first optical layer channel and the second optical layer channel being a shared risk link group (SRLG), the SRLG comprising an identifier of the first fiber span and an identifier of the second fiber span; obtain fault events of the first electrical layer channel and a second electrical layer channel, the second electrical layer channel corresponding to the second optical layer channel, the fault events of the first electrical layer channel and the second electrical layer channel having the SRLG; obtain a fault event of the target service, the routing of the target service having the SRLG.

17. A network management device, comprising: A device comprising a processor and a receiver, the receiver being configured to perform the steps related to receiving of any one of claims 1 to 12, and the processor being configured to perform the steps related to processing of any one of claims 1 to 12.

18. A transport network characterized by, The network management device, M optical devices and N fiber spans, M and N are any integer not less than 1, each of the M optical devices is connected to one of the N fiber spans, the network management device is connected to each of the M optical devices, and the network management device is configured to perform the method of any one of claims 1 to 12.

19. A chip, characterized by The chip comprises a logic circuit and a communication interface, the communication interface is configured to receive data and transmit the data to the logic circuit, or send data from the logic circuit to another chip, and the logic circuit is configured to perform the method of any one of claims 1 to 12.

20. A computer-readable storage medium, characterized in that, The computer program instructions, when executed by a processor, perform the method of any one of claims 1 to 12.

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