133 results about "Network recovery" patented technology

The invention relates to the technical field of power supply services, in particular to a method and system for monitoring the business expansion process of a power supply enterprise in real time. The mobile terminal collects field data, and the edge data server generates a feature sequence to be subjected to compliance comparison; and the rule fusion container fuses the rule base and the historical problem base to generate compliance data. On the basis of field standardized mapping and version abstracts, existence, applicability, consistency and validity period verification is executed on the forced / recommended attributes, and compliance, element missing or non-compliance items are output; and generating positioning information for the non-conformity items, including an informatization problem identifier of a version and a rectification suggestion, converting the positioning information into a work order with a time limit, caching the work order in a weak network, and performing reconciliation and bidirectional verification with a central server after the network is recovered. And the nodes finish event triggering compliance record uploading, and the center summarizes and archives to form process-level compliance. According to the scheme, rule upgrading controllability, evidence chain traceability and process compliance closed loop are realized, and accuracy and efficiency are improved.

The invention relates to the technical field of Internet of Things gateways, and discloses an Internet of Things gateway device and system based on edge computing, and the device comprises a hardware heterogeneous computing module and a multi-interface protocol adaptation module. The edge calculation local processing module is used for performing preprocessing, feature extraction and local decision on the acquired terminal data; the network redundancy and self-healing module is used for realizing accurate network disconnection detection, seamless switching of a main network and a standby network and equipment fault self-recovery through a multi-dimensional network health degree evaluation algorithm; the local autonomous storage module is used for realizing hierarchical storage of high-frequency data and network disconnection emergency data and seamless synchronization after network recovery through network disconnection data hierarchical caching and an incremental synchronization algorithm; and the cloud collaborative management module is used for realizing remote configuration, OTA upgrading and state monitoring. The method is high in integration, low in delay and fast in response, adapts to real-time scenes, saves bandwidth cost, improves cloud efficiency, is high in reliability, and realizes network disconnection and continuous operation.

The invention relates to an inventory data synchronization and consistency verification system supporting network disconnection fault tolerance, and discloses an inventory data synchronization and consistency verification system which realizes continuous recording of inventory operation during a network disconnection period through network state detection and local cache, performs batch transmission after network recovery through a synchronous uploading and verification mechanism, and ensures data integrity. According to the inventory data synchronization and consistency verification system supporting network disconnection fault tolerance, data conflicts are automatically solved through a conflict detection and strategy processing module, a difference report is generated through consistency verification, and secondary synchronization is executed, so that safe synchronization and final consistency guarantee of inventory data are achieved, and it is ensured that the service process is continuous and stable. The system is characterized by comprising a network state detection module, a local cache module, a transaction log management module, a synchronous uploading module, a conflict detection module, a conflict resolution strategy module, a consistency verification module and an abnormity alarm and manual intervention interface module.

The invention discloses a metering inspection platform and method, and the method comprises the following steps: carrying out the extraction of communication parameters and function information of metering equipment, building a unified data model, distributing a unique identifier, and achieving the automatic access of different types of equipment. The platform automatically generates an adaptive inspection flow path according to equipment functions and inspection requirements, can temporarily cache and collect data when a network is abnormal in a flow execution process, and adds a timestamp and verification information to the data. And after the network is recovered, the system compares and verifies the cached data, updates the process state after ensuring the data consistency, records and archives the effective data, and generates a traceable record entry. According to the invention, the access flexibility of the metering equipment is improved, and automatic construction of a process and reliable transmission and storage of data are supported.

The invention discloses a road berth charging and control system for realizing multi-level fault tolerance and a method thereof, and belongs to the technical field of intelligent traffic systems and Internet of Things. The system adopts an edge computing and distributed sensing collaborative architecture, and is composed of an edge controller (ECU) and a sensing and control unit (SCU) deployed in a berth. High availability of the system is ensured through fault-tolerant design of three core dimensions: firstly, perception layer fault tolerance dynamically adjusts data fusion weights of geomagnetism, millimeter wave radar and visual AI according to real-time environment data such as rainfall and electromagnetic interference by integrating an environment perception sub-module; secondly, network layer fault tolerance utilizes an immutable transaction log and a Saga distributed transaction compensation mechanism to realize local charging and digital RMB double offline payment when cloud connection is interrupted, and data consistency is ensured after network recovery; and finally, a hardware layer establishes a neighborhood cooperation protocol based on a signature agent command through fault tolerance, and a healthy node is allowed to act as an agent fault node through safety verification to execute an unlocking instruction. According to the invention, the problems of environmental interference, network interruption, single-point hardware failure and the like in unattended parking management are effectively solved, and the robustness and financial security of the system are remarkably improved.

The invention belongs to the technical field of power distribution network fault diagnosis, and particularly relates to a power distribution network primary and secondary equipment cooperative fault diagnosis method, which comprises the following steps: constructing a bidirectional association training data set, and carrying out tetrad space-time labeling on primary and secondary equipment data; a synchronous acquisition device is adopted to synchronously acquire real-time data and preprocess the real-time data, bidirectional anomaly detection is performed, and a threshold value is dynamically adjusted in combination with distribution network topology and meteorological conditions; a bidirectional cross validation mechanism is designed, primary abnormity needs secondary state quantity matching evidence, secondary abnormity needs primary physical quantity real feature support, and accurate judgment of fault types is ensured; based on a cloud edge-end collaborative architecture, an edge node quickly isolates a fault, and a cloud digital twin model generates a whole-network recovery strategy. Through multi-source data fusion, dynamic adaptive detection and efficient collaborative decision making, the fault diagnosis accuracy and processing efficiency under complex working conditions are improved, the method is suitable for a modern power distribution network containing a high-proportion distributed power supply, and key technical support is provided for intelligent operation and maintenance of the power distribution network.

The invention discloses a data synchronization method and device, electronic equipment and a readable storage medium, and the method comprises the steps: determining a network connection state between gateway equipment and a cloud server according to the network performance indexes of the gateway equipment at a plurality of moments; under the condition that the network connection state is disconnected, first operation data generated by all terminal devices connected with the gateway device are structured and stored in a classified mode; when the network connection state is recovered to connection, the priority of each terminal device is determined based on the multi-dimensional factor, and the first operation data of each terminal device and the second operation data stored in the cloud server are synchronized in sequence according to the priority, so that the integrity of the data on the terminal device during the network disconnection period is ensured, and after the network is recovered, the network connection state of the terminal device is ensured. And consistency of cloud data and local data.

The invention provides a network switching method, terminal equipment and a computer readable storage medium. The method and the device relate to the technical field of communication and are used for solving the problem that terminal equipment cannot recover connection with a high-standard network for a long time. The method comprises the following steps: when the terminal equipment is in a first network coverage area but does not reside in a first communication network, judging whether the terminal equipment currently reside in a second communication network, and if the terminal equipment does not reside in the second communication network, initiating frequency point search for the second communication network. Based on the method, the terminal equipment can be ensured to quickly recover the connection with the high-standard network.

A computing system is disclosed, comprising a host computer and multiple CGRPs (coarse-grained reconfigurable architecture processors) connected to the host computer through external communication links. Each CGRP includes an internal network, external interface circuits, memory interface circuits, arrays of configurable units, hang detection circuits, force-quit controllers, and a network recovery circuit with control registers. The host computer is programmed to configure and execute applications across the arrays of configurable units in both CGRPs. In case of a hang detection in one CGRP, the network recovery circuit initiates a force quit process and notifies the host computer. Additionally, the network recovery circuit compares application IDs and halts execution in the other CGRP if necessary. This system provides efficient failure tolerance and recovery mechanisms for parallel processing applications.

A key value store is maintained at a destination and includes pages of a B+ tree holding filing metadata of first and second files belonging to a logical partition of a filesystem. The pages are associated with KVS keys, each KVS key including a logical partition id, snapshot id, and page number. The snapshot id corresponds to a current snapshot id at a time the pages were written to the KVS. A clone is created at the destination. The parent is assigned a first logical partition id, clone child is assigned a second logical partition id, and current snapshot id is incremented. The destination receives changes to the first and second files. As soon as updates are applied to one of the first or second files, the updated file is scanned for viruses while updates continue to be applied to another of the first or second files.

The invention discloses an equipment ledger management system, equipment and method based on an NFC module, and the system comprises an NFC data interaction module which triggers the near field communication between an NFC tag and a read-write terminal, and achieves the on-site reading and writing of equipment data; the standing book management core module integrates equipment information input, state updating, full life cycle recording and query statistics functions; the data synchronization module realizes real-time data interaction between a terminal and a server, and supports automatic synchronization after offline caching and network recovery; the authority management module allocates access authority based on roles and records an operation log; and the data encryption module encrypts the sensitive information and the transmission data. According to the equipment ledger management system and method, the equipment ledger data entry process can be effectively simplified, manual operation is reduced, the data collection efficiency is improved, full-period tracing and query of the ledger and real-time data updating can be achieved, and the application scene is wide.

The application discloses a cluster abnormal recovery method based on a PBFT algorithm. In a cluster network composed of 3f+1 nodes, the PBFT algorithm can only tolerate at most f abnormal nodes at the same time, but in an actual deployment network, the whole cluster often enters an abnormal state due to reasons such as network delay, network disconnection or node restart. The abnormal node will try to initiate a view change request, and the view change request will eventually time out before the cluster network recovers, at which time the abnormal node will enter a recovery state and initiate a recovery request until more than 2f+1 nodes in the recovery state can select a consistent view value, determine a new master node, wait for a new view start message of the master node, and thus complete the abnormal recovery of the cluster. The method solves the problem that the cluster cannot autonomously recover after a failure in the PBFT algorithm, and greatly improves the availability of the PBFT algorithm.

The invention provides a non-contact double-recording signature method and device based on end intelligence, and the method comprises the steps: loading a face recognition model and a gesture recognition model preset in end side equipment, and initializing a real-time video stream of a camera; face detection, living body judgment and facial feature comparison are carried out based on the real-time video stream, and an identity verification result is generated; synchronously recognizing a gesture of a user or an object moving track, matching a standard signature template through dynamic time warping, and generating a track consistency verification result; the identity verification result, the track consistency verification result and the signature track data are locally encrypted and stored, and are asynchronously uploaded to a server when the network is recovered; and through a timestamp alignment mechanism, audio and video streams in a signature process, an identity verification result and track data are synchronously recorded, encrypted and stored. According to the invention, the authenticity and security of signature are effectively improved, the risk of data leakage is reduced, and the system stability is enhanced.

A neural network is able to reconfigure hardware accelerators on-the-fly without stopping downstream hardware accelerators. The neural network inserts a reconfiguration tag into the stream of feature data. If the reconfiguration tag matches an identification of a hardware accelerator, a reconfiguration process is initiated. Upstream hardware accelerators are paused while downstream hardware accelerators continue to operate. An epoch controller reconfigures the hardware accelerator via a bus. Normal operation of the neural network then resumes.

The invention discloses an off-line multi-scene collaboration and data synchronization mechanism and system based on a light guide film. State data of a user in multiple application scenes such as health monitoring, safety protection, social service, virtual world and smart home are subjected to local temporary storage, priority ranking and intelligent synchronization after network disconnection recovery through a unified identity authentication center. The unique identity feature code is locally cached after the user registers for the first time, and the user does not need to depend on online authentication in an offline state. The system comprises an off-line data temporary storage module, a priority ranking module, an off-network recovery synchronization module, a conflict arbitration module, a storage space management module and a manager off-line response module. When the network is interrupted, state change is temporarily stored in a local circular queue according to the priority (the highest life safety class), sequencing is carried out in real time during writing, and low-priority data is preferentially discarded when the space is full (coverage operation is executed at the head of the queue). And after the network is recovered, reporting according to a priority sequence, and reporting overtime retry by adopting a fragment transmission and breakpoint resume mechanism. The multi-device offline conflict is automatically arbitrated according to a version number, a timestamp and a device priority rule, and a conflict log retention period can be set. And when the supervisor is offline, automatically electing a temporary supervisor, and synchronizing data after recovery. According to the method, the problems that multi-scene state data are lost when the network is interrupted, off-line operation cannot be coordinated, and data conflicts are generated after recovery are solved, and a complete closed loop of online real-time synchronization, off-line temporary storage and supplementary transmission and high availability of a manager is realized.

The invention discloses an implementation method for one-in and one-out control of construction site access control, and relates to the technical field of access control. The implementation method for one-in and one-out control of the construction site access control comprises the following steps of: initializing a configuration gate by a system; identifying the identity of a person when the person enters and exits the construction site; monitoring the passage by the gate; through a strict access verification process and a real-time communication mechanism, the accuracy of the on-site state of personnel is ensured, and the reliability of on-site people counting and safety management and control is improved. And secondly, a flexible strategy is adopted when network communication is interrupted, the edge end firstly releases and stores a record, and supplementary transmission is carried out after the network is recovered, so that the continuity of construction site operation is ensured, and the integrity of data is also ensured. Finally, the method enhances the accuracy of attendance management, and reduces the attendance statistical deviation caused by wrong entry and exit records, thereby ensuring the salary calculation fairness of workers, and improving the overall efficiency and level of construction site management.

The invention relates to the technical field of low-voltage power distribution network operation control and fault processing, and discloses a low-voltage power distribution network multi-mode collaborative self-healing method, system and device based on a capacity regulating transformer and a medium. And according to the tap position of the capacity-regulating transformer and the state of the distributed power supply, a system reconstruction mode is decided. And an optimal power supply island is divided by utilizing an improved graph theory algorithm, so that the distributed power supply can be utilized to supply power to the key load to the maximum extent. An optimization model with capacity regulating transformer loss, network loss and switching action times as targets is established for a main network recovery part, and meanwhile, a GA-BFGS hybrid algorithm is adopted for efficient solving. The method effectively solves the problems that a traditional low-voltage power distribution network is insufficient in recovery capability, and the cooperation efficiency of the transformer and the distributed power supply is low, and remarkably improves the power supply reliability and economy.

The invention relates to the technical field of computer software, in particular to an SDK (Software Development Kit) system for synchronizing offline order processing and network recovery of a designated driver end, which comprises a data acquisition module for acquiring network state data of a driver end, local operation data of an order and local cache data of the order in real time; the off-line operation processing module serializes order operation of a driver into a structured operation log and locally stores the structured operation log in a network off-line state, and updates a local order cache state; after the network is recovered, the network synchronization module uploads the unsynchronized structured operation log increment to the server and receives a server synchronization response result; the conflict coordination module identifies operation logs with conflicts, and performs conflict arbitration and processing according to a timestamp priority strategy; and the state management module maintains and broadcasts online, offline and synchronous states of the SDK in real time, and drives the user interface to update the visual identification of the corresponding state. Therefore, the problems of low synchronization efficiency, non-visual state feedback and the like in the prior art are solved.

The invention provides a Bluetooth data synchronization method, which comprises the following steps: monitoring the mobile network signal intensity of an environment where a vehicle is located, and judging that the environment is a weak network environment if continuous multiple detection values are lower than a preset threshold value; activating a Bluetooth module of a vehicle end, and broadcasting a communication signal containing a vehicle identity identifier; establishing a secure Bluetooth connection with the mobile terminal and transmitting the vehicle state data according to a preset priority; the mobile terminal receives and decrypts the vehicle state data, stores the vehicle state data in a local database and updates a user interface; and when the mobile terminal detects that the network is recovered, the local data is synchronized to the cloud server, and the vehicle end is notified to stop the Bluetooth broadcast. According to the invention, the coverage blind area of the mobile network is compensated through the Bluetooth link, the vehicle data can be obtained by the user in any environment, the problem that the data of the vehicle cannot be synchronized to the user terminal in real time in a weak network or no network environment is solved, the near-field data synchronization with low power consumption and high safety is realized, and the user experience is improved. And the user experience and the data reliability are improved.

The application relates to the technical field of smart grid dispatching and communication network recovery, and proposes a post-disaster power communication network cooperative recovery system and method. The system comprises: a power network model used for allocating power supply resources to each node with the target of recovering power supply of the power network node in a target area in the shortest time; a line repair model used for supplying electric vehicles as loads and mobile repair units, and realizing joint optimization of power network topology reconstruction and power recovery in the target area by coordinating path planning and resource allocation of the electric vehicles; an electric vehicle path planning model used for optimizing the moving path of the electric vehicles with the target of recovering power supply in the target area to the greatest extent, so that the electric vehicles quickly repair the power network within a limited time; a UAV deployment communication network recovery model used for recovering the communication network in the shortest time, and deploying the UAV as a temporary air base station while recovering power supply of a base station node in combination with cooperative work of the electric vehicles and the UAV; and an optimal scheme solving unit provided with a hierarchical multi-objective optimization problem with a target function of maximizing total communication coverage time in the case of minimizing power communication network recovery time, and used for solving the hierarchical multi-objective optimization problem in real time under the constraints of the above models to obtain a real-time optimal scheme of power communication network recovery.

The invention provides a power distribution network recovery method and device for coping with man-in-the-middle attack, and the method comprises the steps: inputting a state parameter of a target power distribution network and a man-in-the-middle attack parameter into a first fault recovery model when the target power distribution network is subjected to the man-in-the-middle attack; based on the state parameter of the target power distribution network, the man-in-the-middle attack parameter, and a target function, a communication network recovery constraint, a physical system recovery constraint, a communication and physical coupling constraint and a man-in-the-middle attack influence constraint of a first fault recovery model, solving to obtain a first fault recovery strategy of the target power distribution network; the first fault recovery strategy comprises a line switching sequence, a load recovery plan and a communication link recovery sequence of the target power distribution network; and based on the first fault recovery strategy of the target power distribution network, recovering the target power distribution network. In this way, the fault recovery strategy is optimized by comprehensively considering the coupling relation between the communication network and the physical system and the man-in-the-middle attack influence, and the fault recovery efficiency of the power distribution network when the power distribution network is subjected to the man-in-the-middle attack can be improved.

The invention provides a method and a system for quickly recovering a network after roaming switching in Mesh networking, which are characterized in that the network can be quickly recovered through all-node information synchronization when wireless terminal equipment is online, real-time updating in a use process, direct loading of backup information after roaming and backup state maintenance of an original node. The function of quickly recovering network connection during roaming switching is realized. The connection information and various table items of the wireless terminal equipment do not need to be regenerated after roaming, the network service interruption time during roaming switching is shortened to the maximum extent, it is guaranteed that the wireless terminal equipment keeps a high-quality access state through roaming switching, the influence of transient network interruption on use of a user in the switching process is avoided, and the user experience is improved. And the user experience of Mesh networking is obviously improved.

This invention relates to the field of network communication and online conferencing technology, and discloses a method and system for compensating for core information lost during conferencing. After a conferencing terminal experiences a network outage and reconnects, the server determines the compensation range based on the outage information reported by the terminal, processes the cached conferencing data from the outage period, and extracts the key information most impactful on conferencing continuity through a multicast and unicast collaborative transmission mechanism and a core information filtering model based on semantic similarity and time decay. This information is then encapsulated into a data compensation packet and sent to the terminal, achieving rapid compensation and synchronization of core content. Compared with existing technologies, this invention can effectively reduce redundant data transmission under bandwidth-constrained conditions, improve conferencing continuity and information integrity after network recovery, and enhance system stability and user experience.

The web-based EMR backup system empowers Healthcare facility administrators by building cyber resilience to ransomware threats, data breaches, power outages, or planned downtimes. A web-based EMR backup process is provided in embodiments of the invention, enabling administrators to activate a web-based EMR system in the event of a debilitating cyber-attack, power outage, or planned downtime, that allows healthcare professionals to maintain their daily workflow using the web-based EMR backup system in order to maintain business continuity and clinical resiliency. The web-based EMR system minimizes the risks that would arise due to errors generated because of traditional record keeping methods, such as manual record keeping, while also maintaining the workflow efficiencies modern EMR systems provide. The web-based EMR backup system synchronizes any changes made during the cyber-threat, power outage, or planned downtime once the main EMR is restored to ensure data consistency and provide significant financial savings by preventing the need to reconcile the two databases by hand.

The invention discloses a reactive compensation method for cooperative mobile energy storage and conventional energy storage configuration, and belongs to the field of energy storage. The method comprises the following three core steps: firstly, constructing an MESS motorcade driving model which covers a road condition matrix, position constraint, operation constraint and power output constraint, and ensuring the moving and power scheduling feasibility of the MESS; and secondly, establishing a coordination power grid reactive power optimization model, integrating power limitation and load flow calculation of the DG, the static reactive power compensator and the fixed energy storage system, and realizing multi-resource coordination. And finally, considering load and DG prediction errors, and constructing a robust variant of a coordination network recovery model so as to enhance the recovery capability of the active power distribution network. The problem that a traditional fixed reactive power compensation device is flexible when dealing with load fluctuation and output uncertainty of a distributed power supply is solved. According to the method, dynamic reactive power optimization is realized by integrating space-time maneuverability of a mobile energy storage system and continuity of fixed energy storage.

This invention discloses a method and system for offline emergency toll collection on highways. The method constructs a three-layer collaborative architecture of "cloud-edge-device" and deploys edge nodes equipped with offline operating engines to solve the problems of excessive load on industrial control computers and lane paralysis caused by equipment malfunction after network outages at toll stations. Under normal circumstances, the cloud is responsible for overall management, and edge nodes coordinate business operations. When a network interruption is detected, the system automatically switches to offline emergency mode. In this mode, the edge nodes or local industrial control computers act as the control core, executing toll collection business logic based on locally cached parameters and directly controlling intelligent lane equipment through IoT protocols to complete offline billing, deduction, and passage control for ETC and MTC vehicles. Offline data is encrypted and stored locally and automatically synchronized to the cloud after network recovery. This invention significantly improves the reliability and robustness of highway toll collection systems.

The invention discloses a flow compensation and remote transmission integrated system for an ultrasonic gas meter, which relates to the technical field of ultrasonic gas metering, and identifies whether the system is in a low-flow weak-signal state or not by collecting parameters such as environment temperature, pipeline pressure and signal interference intensity; if the working condition is the abnormal working condition, constructing a gas density dynamic model, and generating a flow velocity correction factor in combination with gas component parameters to realize flow compensation; the compensated flow velocity is packaged after stability judgment, and is uploaded to a remote server when power supply and a network meet conditions; if the condition is not met, caching the data and entering dormancy, and intermittently awakening and detecting the network recovery condition; meanwhile, the system has the capability of difference self-learning optimization and compensation model updating, and a remote maintenance mechanism is triggered in combination with an error trend; the system has the advantages of high metering precision, strong anti-interference capability, good remote transmission stability and strong self-maintenance capability.

The invention relates to a power transmission line defect information pushing method and device, equipment, a storage medium and a computer program product. The method comprises the steps that defect information of the power transmission line is acquired, network state information is acquired, and the defect information is used for indicating at least one of the defect position, the defect type and the defect grade of the power transmission line; under the condition that the network state information indicates that the network is abnormal, encrypting the defect information based on a preset encryption algorithm to obtain encrypted defect information, storing the encrypted defect information in a cache, and generating a tracing identifier of the encrypted defect information; monitoring network state information, acquiring encryption defect information from the cache based on the tracing identifier under the condition that the network state information indicates that the network returns to normal, and decrypting the encryption defect information to obtain defect information; and packaging the defect information based on a preset interface specification, and pushing the packaged defect information. By adopting the method, the pushing efficiency of the defect information can be improved.

This application discloses a roaming network recovery method, apparatus, device, and medium, relating to the field of computer technology. The method includes: when a roaming redial policy switch is enabled, obtaining a first operator identifier for the current communication coverage area at preset intervals, and comparing it with a second operator identifier maintained internally by the device; if the two are different, updating the accumulated handover count; when the count exceeds a preset threshold and the second operator identifier is valid, triggering a soft reset of the network connection control module, matching the network configuration parameters corresponding to the first operator identifier, re-initiating an access request to the operator, and updating the second operator identifier, thereby achieving roaming network recovery. This application can accurately identify whether a problem occurs during roaming, indicating that the network has entered a new operator's network rather than experiencing temporary fluctuations; it can avoid problems such as "long periods without network" or "false online"; it can automatically adapt to the configuration requirements of new operators, solving problems such as data bearer establishment failure and unavailability of related voice functions.

Provided are a communication method and apparatus, and a system, relating to the technical field of communications. The method is executed by a communication apparatus in a network system. The method comprises: determining that a first internal gateway protocol (IGP) network topology is a stable topology; generating a first IGP path on the basis of the first IGP network topology; and upon generation of the first IGP path, on the basis of a routing protocol fault occurring on a second IGP path, switching the second IGP path to the first IGP path, wherein the second IGP path includes a path from a first communication apparatus to another communication apparatus. The first IGP path includes a path from the first communication apparatus to another communication apparatus, and the second IGP path includes a path from the first communication apparatus to another communication apparatus. In this way, by means of path fallback, it is ensured that a network is restored to a stable topology state capable of normal communication, a routing protocol fault caused by problems such as routing oscillation and the introduction of routing configuration errors can be solved, thereby improving the universality of network recovery.