Control method, device and equipment for optical transport network rerouting, and storage medium

Abstract

The application discloses a control method, device and equipment of optical transport network rerouting and a storage medium. The method comprises the following steps: determining a target node in an optical transport network in which an optoelectronic inter-rack fault exists; performing rerouting configuration on the target node based on electrical cross and optical cross to recover the communication of the optical transport network; wherein the optoelectronic inter-rack fault is a line path fault between an electronic rack and a photon rack of the target node. The embodiment of the application performs rerouting configuration on the target node based on electrical cross and optical cross, can perform rerouting configuration on only the target node in the original service transmission path, i.e. only needs to switch the ports and connections between the electronic rack and the photon rack of the target node, and the rest of the resources all use the resources of the original service transmission path, so that the network resources can be saved and the service interruption time can be effectively reduced.

Description

Technical Field

[0001] This application relates to optical transport networks (OTN), and more particularly to a control method, apparatus, device, and storage medium for rerouting in optical transport networks. Background Technology

[0002] Optical transport networks are transport networks based on wavelength division multiplexing (WDM) technology and organized at the optical layer. They can transmit, multiplex, route, and monitor service signals within the optical domain, ensuring their performance indicators and survivability. They are the next-generation backbone transport networks. In related technologies, when an optical transport network fails, recovery is often based on electrical layer rerouting.

[0003] Because rerouting occurs at the electrical layer, the rerouting path does not overlap with the original path resources, resulting in higher resource consumption for rerouting. Furthermore, establishing new connections requires configuring a large number of node devices, leading to prolonged service interruptions. Summary of the Invention

[0004] In view of this, embodiments of this application provide a control method, apparatus, device, and storage medium for rerouting in an optical transport network, aiming to save network resources and reduce service interruption time.

[0005] The technical solution of this application embodiment is implemented as follows:

[0006] This application provides a method for controlling rerouting in an optical transport network, including:

[0007] Identify the target node in the optical transport network that has an inter-rack fault in optoelectronics;

[0008] The target node is rerouted based on electrical cross-connection and optical cross-connection to restore communication in the optical transport network;

[0009] The aforementioned optoelectronic rack fault refers to a fault in the line path between the electronic rack and the photonic rack of the target node.

[0010] In the above scheme, determining the target node in the optical transport network where an inter-rack optoelectronic fault exists includes:

[0011] In response to a service interruption failure, the target node is determined based on the fault detection information reported by each node in the service delivery path.

[0012] In the above scheme, determining the target node based on the fault detection information reported by each node in the service transmission path includes:

[0013] Based on the fault detection information reported by each node in the service transmission path, the node in the service transmission path with an optoelectronic inter-rack fault is identified as the target node.

[0014] In the above scheme, determining the node with an optoelectronic rack fault in the service transmission path as the target node based on the fault detection information reported by each node in the service transmission path includes:

[0015] It is determined that a first alarm message indicating a board failure in any of the nodes in the service transmission path and a second alarm message indicating a fiber optic line failure between the nodes have not been received.

[0016] Based on the third alarm message indicating no light received at the photonic rack port or the fourth alarm message indicating no light received at the electronic rack port reported by any node in the service transmission path, the node that reported the third alarm message or the fourth alarm message is determined as the target node.

[0017] In the above scheme, the target node is the source node, destination node, or intermediate node in the service transmission path.

[0018] In the above scheme, the rerouting configuration of the target node based on electrical cross-connection and optical cross-connection includes:

[0019] For the target node, select an idle optoelectronic connection port pair between the photonic rack and the electronic rack;

[0020] Based on the selected optoelectronic connection port pair, configure the electrical cross-connection of the electronic frame and the optical cross-connection of the photonic frame of the target node.

[0021] In the above scheme, configuring the electrical cross-connection of the electronic frame and the optical cross-connection of the photonic frame of the target node based on the selected optoelectronic connection port pair includes:

[0022] For the electronic rack port in the optoelectronic connection port pair, the electronic rack line port of the target node in the service transmission path is restored based on the electrical cross-connection.

[0023] For the photonic rack port in the optoelectronic connection port pair, the photonic rack line port of the target node in the service transmission path is restored based on optical cross-connection.

[0024] This application also provides a control device for rerouting in an optical transport network, including:

[0025] The fault detection module is used to identify target nodes in the optical transport network that have optoelectronic inter-rack faults.

[0026] The rerouting configuration module is used to reroute the target node based on electrical cross-connection and optical cross-connection to restore communication of the optical transmission network;

[0027] The aforementioned optoelectronic rack fault refers to a fault in the line path between the electronic rack and the photonic rack of the target node.

[0028] This application embodiment provides a controller for an optical transport network, including: a processor and a memory for storing a computer program that can run on the processor, wherein the processor, when running the computer program, executes the steps of the method described in this application embodiment.

[0029] This application also provides an optical transport network, including: multiple nodes and a controller as described in this application embodiment.

[0030] This application embodiment also provides a storage medium storing a computer program, which, when executed by a processor, implements the steps of the method described in this application embodiment.

[0031] The technical solution provided in this application identifies a target node in an optical transport network that has an inter-rack fault in optoelectronics; it performs rerouting configuration on the target node based on electrical cross-connection and optical cross-connection to restore communication in the optical transport network; wherein, the inter-rack fault in optoelectronics refers to a fault in the line path between the electronic rack and the photonic rack of the target node. This application's embodiment performs rerouting configuration on the target node based on electrical cross-connection and optical cross-connection, which only requires rerouting the target node in the original service transmission path. That is, it only needs to switch the ports and connections between the electronic rack and the photonic rack of the target node, while other resources use the resources of the original service transmission path, thereby saving network resources and effectively reducing service interruption time. Attached Figure Description

[0032] Figure 1 This is a schematic diagram illustrating the principle of optical transport network service rerouting in related technologies.

[0033] Figure 2 This is a schematic diagram illustrating the process of rerouting optical transport network services in related technologies.

[0034] Figure 3 This is a flowchart illustrating the control method for optical transport network rerouting according to an embodiment of this application;

[0035] Figure 4 This is a schematic diagram illustrating the principle of optical transport network service rerouting in the application example of this application;

[0036] Figure 5 This is a schematic diagram illustrating the process of rerouting a target node based on electrical cross-connection and optical cross-connection in an embodiment of this application.

[0037] Figure 6 This is a schematic diagram of the control method for service rerouting in the application example of this application;

[0038] Figure 7 This is a schematic diagram of the control device for optical transport network rerouting according to an embodiment of this application;

[0039] Figure 8 This is a schematic diagram of the structure of the controller of the optical transmission network according to an embodiment of this application;

[0040] Figure 9 This is a schematic diagram of the structure of the optical transmission network according to an embodiment of this application. Detailed Implementation

[0041] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0043] In optical transport networks, although both the optical and electrical layers of each node can be controlled by a centralized management platform, scheduling is primarily based on the electrical layer, and there is a lack of effective coordination between the management of the optical and electrical layers. In practical applications, dynamic scheduling of the optical layer is not widely used; the optical layer often serves as a static conduit, rarely changing once wavelength connections or optical cross-matching are established.

[0044] In related technologies, service rerouting in optical transport networks is typically implemented based on electrical layer scheduling. For example, when a service failure occurs, the controller recalculates an end-to-end path (between client-side ports), such as... Figure 1 As shown, the original working path between node A and node Z is the path corresponding to wavelength λ1. When a service failure occurs, the controller establishes a recovery path with wavelength λ2 between node A and node Z based on electrical layer scheduling.

[0045] Specifically, such as Figure 2 As shown, the service rerouting includes: the controller configures the electrical cross-connect, switches the service line side port, thereby selecting a new electronic rack port on the electronic racks of nodes A and Z respectively, and connecting it to the corresponding photonic rack port; subsequently, for each node, the optical wavelength connection route is calculated in the optical layer according to the new port, and a new optical layer connection is established.

[0046] The above solution, because it calculates rerouting at the electrical layer and the rerouting path does not overlap with the original path resources, consumes a lot of resources for rerouting. In addition, establishing new connections requires configuring a large number of node devices, resulting in a long service interruption time (currently on the order of seconds).

[0047] Based on this, in various embodiments of this application, under the optoelectronic cooperative control mechanism, for optoelectronic rack faults, the photonic rack and electronic rack of the faulty node (also known as the target node) are configured simultaneously, i.e., optoelectronic cross-configuration, to realize fault service recovery. Compared with the traditional rerouting mechanism, it can enable services to bypass the line path of the optoelectronic rack fault, and the remaining resources use the resources of the original service transmission path, saving a lot of network resources. At the same time, rerouting only needs to configure the faulty node (a single node), which can significantly reduce the service interruption time.

[0048] This application provides a control method for rerouting in an optical transport network. This method can be applied to the controller of the optical transport network, which can be an optoelectronic co-controller, capable of configuring the optical and electrical layers of each node. For example... Figure 3 As shown, the method includes:

[0049] Step 301: Identify the target node in the optical transport network that has an inter-rack fault in optoelectronics.

[0050] Here, the fault between the optoelectronic racks is a fault in the line path between the electronic rack and the photonic rack of the target node.

[0051] Step 302: Re-route the target node based on electrical cross-connection and optical cross-connection to restore communication in the optical transport network.

[0052] For example, such as Figure 4 As shown, if the controller determines that there is an inter-rack fault in the optical transmission network, it can re-route node A based on electrical cross-connection and optical cross-connection to restore the original service transmission path of wavelength λ1.

[0053] based on Figure 1 and Figure 4 According to the comparison, the embodiments of this application can re-route the target node based on electrical cross-connection and optical cross-connection. It can re-route the target node only in the original service transmission path, that is, it is only necessary to switch the ports and connections between the electronic rack and the photonic rack of the target node. The remaining resources use the resources of the original service transmission path, thereby saving network resources and effectively reducing the service interruption time.

[0054] For example, the controller determines a target node in the optical transport network where an inter-rack optoelectronic fault exists, including:

[0055] In response to service interruption failures, the target node is determined based on the fault detection information reported by each node in the service delivery path.

[0056] It should be noted that each node in the optical transport network can support fault monitoring. When a fault is detected, it immediately reports alarm information (i.e., fault detection information) to the controller. For example, the alarm information monitored by each node may include equipment board faults, line faults, etc. When the controller receives a service interruption alarm, it can confirm that a service interruption fault exists. If it determines that there is an optoelectronic rack fault based on the fault detection information reported by each node, it will perform the rerouting configuration of this embodiment on the target node.

[0057] For example, rerouting configuration for the target node based on electrical cross-connection and optical cross-connection includes:

[0058] For the target node, select the pair of available optoelectronic connection ports between the photonic rack and the electronic rack;

[0059] Based on the selected optoelectronic connection port pair, configure the electrical cross-connection of the electronic rack and the optical cross-connection of the photonic rack of the target node.

[0060] Here, the ports between the electronic rack and the photonic rack can form optoelectronic connection port pairs based on the mapping relationship of optoelectronic cooperative connections. The ports between the electronic rack and the photonic rack correspond one-to-one based on this mapping relationship. Electrical cross-connection refers to establishing a connection between the electronic rack line port and the electronic rack port on the electronic rack, while optical cross-connection refers to establishing a connection between the photonic rack port on the photonic rack and the photonic rack line port. Specifically, the electronic rack line port is the port connecting the node's electronic rack to the outside world, the photonic rack line port is the port connecting the node's photonic rack to the outside world, and the electronic rack port and photonic rack port are the ports between the electronic rack and the photonic rack.

[0061] For example, based on the selected optoelectronic connection port pair, the electrical cross-connection of the electronic frame and the optical cross-connection of the photonic frame of the target node are configured, including:

[0062] For the electronic rack port in the optoelectronic connection port pair, the electronic rack line port of the target node in the service transmission path is restored based on the electrical cross-connection.

[0063] For the photonic rack port in the optoelectronic connection port pair, the photonic rack line port of the target node in the service delivery path is restored based on optical cross-connection.

[0064] For example, such as Figure 5 As shown, the rerouting configuration for the target node based on electrical cross-connection and optical cross-connection includes:

[0065] Step 501: Configure electrical crossbar and switch electronic rack ports.

[0066] If the controller determines that there is an inter-rack fault in the optoelectronic rack at the target node of the service delivery path, it will perform electrical cross-connection on the optoelectronic rack at the target node and select an idle optoelectronic rack port as the new optoelectronic rack port for the service delivery path.

[0067] Step 502: Configure the wavelength of the new electronic rack port to the operating wavelength of the original service transmission path.

[0068] The controller configures the wavelength of the new electronic rack port to the operating wavelength of the original service delivery path.

[0069] Step 503: Query the corresponding photonic rack port.

[0070] The controller queries the photonic rack port corresponding to the new electronic rack port based on the mapping relationship of the optoelectronic cooperative connection.

[0071] Step 504: Cross the wavelength of the photonic rack port to the original service transmission path.

[0072] The controller performs optical crossover at the photonic rack of the target node, and crossovers the wavelength of the photonic rack port determined in step 503 to the original service transmission path.

[0073] For example, determining the target node based on fault detection information reported by each node in the service delivery path includes:

[0074] Based on the fault detection information reported by each node in the service delivery path, the node with the optoelectronic inter-rack fault in the service delivery path is identified as the target node.

[0075] For example, based on the fault detection information reported by each node in the service delivery path, the node in the service delivery path with an optoelectronic rack fault is identified as the target node, including:

[0076] The system determines that a first alarm message indicating a board failure has occurred at any of the nodes that have not received the indication of the service transmission path, and a second alarm message indicating a fiber optic line failure has occurred between the nodes.

[0077] Based on the third alarm message (no light received at the photonic rack port) or the fourth alarm message (no light received at the electronic rack port) reported by any node in the service transmission path, the node that reported the third alarm message or the fourth alarm message is determined as the target node.

[0078] It is understandable that the target node can be a source node, destination node, or intermediate node in the business transmission path.

[0079] It should be noted that if the controller does not receive the first alarm message indicating that any node in the service delivery path has failed, it means that none of the nodes in the service delivery path have experienced board failures, that is, the service interruption failure is not caused by a hardware failure of the node.

[0080] It should be noted that if the controller does not receive a second alarm message indicating a fiber optic line fault between any node in the service delivery path, it means that the fiber optic cable in the service delivery path is not faulty, i.e., the service interruption is not caused by a fiber optic cable fault. For example, the second alarm message can be generated by a node based on the absence of light at the photonic rack line port.

[0081] For example, in the case of an optoelectronic rack fault, the source node can report a third alarm message, the destination node can report a fourth alarm message, and the intermediate node can report the third alarm message and / or the fourth alarm message.

[0082] The following application example will be used to further describe this application in detail.

[0083] The schematic diagram of the optical transport network service rerouting principle in this application example is shown below. Figure 4 As shown. Figure 6 As shown, the control method for this service rerouting includes:

[0084] Step 601, fault location, confirming that there is an optoelectronic inter-rack fault at node A.

[0085] Here, the controller can determine that there is a photonic rack fault in node A based on the alarm information of no light received at the photonic rack port OP1 reported by node A.

[0086] Step 602: Select an available optoelectronic connection port pair.

[0087] For example, the controller can randomly select an idle electronic rack port EP2 and a photonic rack port OP3 as an optoelectronic connection port pair based on the mapping relationship of optoelectronic cooperative connection.

[0088] Step 603: Configure the electronic rack of node A so that the original customer-side port services are cross-connected to the electronic rack port EP2, and the wavelength is set to the original working wavelength λ1.

[0089] The controller configures the electrical cross-connection of node A so that the electronic rack port EP2 is connected to the original electronic rack line port of the service transmission path, and sets the wavelength to the original operating wavelength λ1.

[0090] Step 604: Configure the photonic rack of node A so that the photonic rack port OP3 is cross-connected to the original service delivery path.

[0091] The controller configures node A to connect the photonic rack port OP3 to the original photonic rack line port of the service transmission path, and sets the wavelength to the original working wavelength λ1.

[0092] In this way, the controller can restore faulty services by configuring optoelectronic cross-connects on node A. Compared with the traditional rerouting mechanism, it can allow services to bypass the faulty line path between optoelectronic racks, and the remaining resources can use the resources of the original service transmission path, saving a lot of network resources. At the same time, rerouting only requires the configuration of a single node, which can significantly reduce the service interruption time.

[0093] To implement the method of the embodiments of this application, the embodiments of this application also provide a control device for optical transport network rerouting. This control device for optical transport network rerouting corresponds to the control method for optical transport network rerouting described above. The steps in the embodiments of the control method for optical transport network rerouting are also fully applicable to the control device embodiment for optical transport network rerouting.

[0094] like Figure 7 As shown, the control device for rerouting in the optical transport network includes a fault detection module 701 and a rerouting configuration module 702. The fault detection module 701 is used to identify a target node in the optical transport network that has an inter-rack fault in optoelectronics; the rerouting configuration module 702 is used to perform rerouting configuration on the target node based on electrical cross-connection and optical cross-connection to restore communication in the optical transport network; wherein, the inter-rack fault in optoelectronics refers to a fault in the line path between the electronic rack and the photonic rack of the target node.

[0095] For example, the fault detection module 701 is specifically used for:

[0096] In response to a service interruption failure, the target node is determined based on the fault detection information reported by each node in the service delivery path.

[0097] For example, the fault detection module 701 is specifically used for:

[0098] Based on the fault detection information reported by each node in the service transmission path, the node in the service transmission path with an optoelectronic inter-rack fault is identified as the target node.

[0099] For example, the fault detection module 701 determines the target node based on the fault detection information reported by each node in the service transmission path, including:

[0100] It is determined that a first alarm message indicating a board failure in any of the nodes in the service transmission path and a second alarm message indicating a fiber optic line failure between the nodes have not been received.

[0101] Based on the third alarm message indicating no light received at the photonic rack port or the fourth alarm message indicating no light received at the electronic rack port reported by any node in the service transmission path, the node that reported the third alarm message or the fourth alarm message is determined as the target node.

[0102] For example, the target node is the source node, destination node, or intermediate node in the service delivery path.

[0103] For example, the rerouting configuration module 702 is specifically used for:

[0104] For the target node, select an idle optoelectronic connection port pair between the photonic rack and the electronic rack;

[0105] Based on the selected optoelectronic connection port pair, configure the electrical cross-connection of the electronic frame and the optical cross-connection of the photonic frame of the target node.

[0106] For example, the rerouting configuration module 702 configures the electrical cross-connection of the electronic rack and the optical cross-connection of the photonic rack of the target node based on the selected optoelectronic connection port pair, including:

[0107] For the electronic rack port in the optoelectronic connection port pair, the electronic rack line port of the target node in the service transmission path is restored based on the electrical cross-connection.

[0108] For the photonic rack port in the optoelectronic connection port pair, the photonic rack line port of the target node in the service transmission path is restored based on optical cross-connection.

[0109] In practical applications, the fault detection module 701 and the rerouting configuration module 702 can be implemented by the processor in the optical transport network rerouting control device. Of course, the processor needs to run the computer program in memory to implement its functions.

[0110] It should be noted that the optical transport network rerouting control device provided in the above embodiments is only illustrated by the division of the above-described program modules when controlling optical transport network rerouting. In practical applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device can be divided into different program modules to complete all or part of the processing described above. In addition, the optical transport network rerouting control device and the optical transport network rerouting control method embodiments provided in the above embodiments belong to the same concept, and their specific implementation process can be found in the method embodiments, which will not be repeated here.

[0111] Based on the hardware implementation of the above program modules, and in order to implement the method of the embodiments of this application, the embodiments of this application also provide a controller for an optical transmission network. Figure 8This is only an exemplary structure of the controller, not the entire structure; it can be implemented as needed. Figure 8 The structure shown may be part or all of the structure.

[0112] like Figure 8 As shown, the controller 800 provided in this embodiment includes at least one processor 801, a memory 802, a user interface 803, and at least one network interface 804. The various components in the controller 800 are coupled together via a bus system 805. It can be understood that the bus system 805 is used to implement communication between these components. In addition to a data bus, the bus system 805 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 8 The general labeled all buses as Bus System 805.

[0113] The user interface 803 may include a monitor, keyboard, mouse, trackball, click wheel, buttons, touchpad, or touch screen.

[0114] The memory 802 in this embodiment is used to store various types of data to support the operation of the controller. Examples of such data include any computer program used to operate on the controller.

[0115] The optical transport network rerouting control method disclosed in this application embodiment can be applied to, or implemented by, processor 801. Processor 801 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the optical transport network rerouting control method can be completed by integrated logic circuits in the hardware of processor 801 or by instructions in software form. The processor 801 can be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Processor 801 can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of this application can be directly manifested as execution by a hardware decoding processor, or execution by a combination of hardware and software modules in the decoding processor. The software modules can be located in a storage medium, specifically memory 802. Processor 801 reads information from memory 802 and, in conjunction with its hardware, completes the steps of the optical transport network rerouting control method provided in the embodiments of this application.

[0116] In an exemplary embodiment, the controller may be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers (MCUs), microprocessors, or other electronic components to perform the aforementioned methods.

[0117] It is understood that memory 802 can be volatile memory or non-volatile memory, or both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), ferromagnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM); magnetic surface memory can be disk storage or magnetic tape storage. Volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SyncLink Dynamic Random Access Memory (SLDRAM), and Direct Rambus Random Access Memory (DRRAM).The memories described in the embodiments of this application are intended to include, but are not limited to, these and any other suitable types of memories.

[0118] like Figure 9 As shown in the illustration, this application also provides an optical transport network, including: multiple nodes and the controller 800 described in the foregoing embodiments. For example, the multiple nodes may include: nodes A, B, C, D, E, and Z. The controller 800 can execute the optical transport network rerouting control method of this application embodiment, which will not be described in detail here.

[0119] In an exemplary embodiment, this application also provides a storage medium, namely a computer storage medium, specifically a computer-readable storage medium, such as a memory 802 storing a computer program. This computer program can be executed by the processor 801 of the controller 800 to complete the steps described in the method of this application embodiment. The computer-readable storage medium can be a ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM, etc.

[0120] It should be noted that terms such as "first" and "second" are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0121] Furthermore, the technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.

[0122] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A control method for rerouting in an optical transport network, characterized in that, include: Identify the target node in the optical transport network that has an inter-rack fault in optoelectronics; The target node is rerouted based on electrical cross-connection and optical cross-connection to restore communication in the optical transport network; The aforementioned optoelectronic rack fault refers to a fault in the line path between the electronic rack and the photonic rack of the target node; The determination of a target node in the optical transport network that exhibits an inter-rack fault in optoelectronics includes: In response to a service interruption failure, the target node is determined based on the fault detection information reported by each node in the service delivery path; The rerouting configuration of the target node based on electrical cross-connect and optical cross-connect includes: For the target node, select an idle optoelectronic connection port pair between the photonic rack and the electronic rack; Based on the selected optoelectronic connection port pair, the electrical crossbar of the electronic frame and the optical crossbar of the photonic frame of the target node are configured simultaneously; The optoelectronic connection port pair is formed by the mapping relationship between the ports of the electronic frame and the photonic frame based on optoelectronic cooperative connection; The determination of the target node based on the fault detection information reported by each node in the service delivery path includes: Based on the fault detection information reported by each node in the service transmission path, it is determined that a first alarm message indicating a board fault in any node of the service transmission path and a second alarm message indicating a fiber optic line fault between the nodes have not been received. Based on the third alarm message indicating no light received at the photonic rack port or the fourth alarm message indicating no light received at the electronic rack port reported by any node in the service transmission path, the node that reported the third alarm message or the fourth alarm message is determined as the target node.

2. The method according to claim 1, characterized in that, The target node is the source node, destination node, or intermediate node in the service transmission path.

3. The method according to claim 1, characterized in that, The configuration of the electrical cross-connection of the electronic frame and the optical cross-connection of the photonic frame of the target node based on the selected optoelectronic connection port pair includes: For the electronic rack port in the optoelectronic connection port pair, the electronic rack line port of the target node in the service transmission path is restored based on the electrical cross-connection. For the photonic rack port in the optoelectronic connection port pair, the photonic rack line port of the target node in the service transmission path is restored based on optical cross-connection.

4. A control device for rerouting in an optical transmission network, characterized in that, include: The fault detection module is used to identify target nodes in the optical transport network that have optoelectronic inter-rack faults. The rerouting configuration module is used to reroute the target node based on electrical cross-connection and optical cross-connection to restore communication of the optical transmission network; The aforementioned optoelectronic rack fault refers to a fault in the line path between the electronic rack and the photonic rack of the target node; The fault detection module is specifically used to: in response to a service interruption fault, determine the target node based on the fault detection information reported by each node in the service delivery path; The rerouting configuration module is specifically used to: select an idle photoelectric connection port pair between the photonic rack and the electronic rack for the target node; Based on the selected optoelectronic connection port pair, the electrical crossbar of the electronic frame and the optical crossbar of the photonic frame of the target node are configured simultaneously; The optoelectronic connection port pair is formed by the mapping relationship between the ports of the electronic frame and the photonic frame based on optoelectronic cooperative connection; The fault detection module is specifically used to: determine, based on the fault detection information reported by each node in the service transmission path, that a first alarm message indicating a board fault has occurred in any of the nodes in the service transmission path and a second alarm message indicating a fiber optic line fault has occurred between the nodes. Based on the third alarm message indicating no light received at the photonic rack port or the fourth alarm message indicating no light received at the electronic rack port reported by any node in the service transmission path, the node that reported the third alarm message or the fourth alarm message is determined as the target node.

5. A controller for an optical transmission network, characterized in that, include: A processor and memory for storing computer programs that can run on the processor, wherein, The processor, when running a computer program, performs the steps of the method according to any one of claims 1 to 3.

6. An optical transmission network, characterized in that, include: Multiple nodes and the controller as described in claim 5.

7. A storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 3.

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