120results about How to "Reduce failure recovery time" patented technology

In general, techniques are described for representing services, network resources, and relationships between such services and resources in a graph database with which to validate, provision, and manage the services in near real-time. In one example, a controller device includes at least one processor; and at least one memory to store a graph database comprising a graph that represents network resources and relationships between network resources. The controller device receives, at an application programming interface, a data-interchange formatted message that indicates a service request to configure a network service; queries, at least a portion of the plurality of the graph, to determine whether a set of the plurality of network resources can satisfy the service request to provision the network service within the network; and configures the set of the plurality of network resources to provide the network service.

The invention discloses a control and switch method for redundant submodules of a modular multilevel converter. The converter monitors a voltage value of a redundant submodule support capacitor in the normal running process. When voltage of two ends of the redundant submodule support capacitor of a phase of bridge arm is larger than or equal to a first preset value and smaller than or equal to a second preset value, the redundant submodules are in a switch-out state; when the voltage of two ends of the redundant submodule support capacitor is smaller than the first preset value, the on-off states of a first switch tube and a second switch tube are determined according to a modulation mode and a submodule direct voltage balance control strategy; and till the voltage of two ends of the redundant submodule support capacitor is equal to the second preset value, the second switch tube is connected for afterflow, otherwise, a message of a overvoltage fault of the redundant submodules is sent, so that the protection action is executed. According to the control and switch method, the redundant submodules can be connected to bridge arms at the highest speed to replace fault submodules, so that the stability of voltage of the direct current side of the converter is maintained, the balance in voltage between capacitors of the submodules of the upper bridge arm and the lower bridge arm is kept, the reliability is improved, and the availability ratio is increased.

The embodiment of the invention provides a data processing method and apparatus for SDN (Software Defined Networking) Mobile Ad-Hoc Network, being able to acquire the latest connection state between a controller and a switch. The data processing method for SDN Mobile Ad-Hoc Network includes the steps: performing self-learning on a data message to be processed and constructing a first flow entry; judging whether a flow entry being identical to a matching domain of the first flow entry exists in a disaster backup flow table; if so, deleting the flow entry being identical to the matching domain of the first flow entry and adding the first flow entry in the disaster backup flow table; and if not, adding the first flow entry in the disaster backup flow table; judging whether the data message to be processed matches the first flow entry added in the disaster backup flow table; if so, according to the first flow entry in the disaster backup flow table, processing the data message; and if not, according to the default flow entry, processing the data message. Therefore, the data processing method and apparatus for SDN Mobile Ad-Hoc Network can reduce the fault recovery time when a controller malfunctions, and can improve the reliability and stability of the network.

When a transaction layer circuit detects an error, error information in respect of transmission data is set in a TLP digest. The method includes: a step in which, at an endpoint (3a) that receives a memory read request transmitted by the root complex 1, if an error is detected during transmission of first data corresponding to the requested TLP, error information is set in the TLP digest and a completion with data attached is returned; a step in which the root complex (1) returns a memory read request based on the error information to the endpoint; a step in which the endpoint returns requested second data; and a step in which the root complex terminates the response after overwriting the error location of the first data that was held, with the second data.

The invention discloses a JMX (Java Management Extensions)-based customization real-time monitoring and automatic exception handling system. The JMX-based customization real-time monitoring and automatic exception handling system comprises a data sampling information library, a monitoring model library, an exception handling library, a network communication module, a data collection module, a data exception handling analysis module, a page presentation module and a monitoring database, wherein monitored systems are used for starting a JMX access port, and establish remote access connection between the monitoring system and the monitored systems; the data sampling information library is a warehouse for storing data sample information; the monitoring model library is a warehouse for storing monitoring models corresponding to all the monitored systems; the exception handling library is a warehouse for storing exception handling methods and flows; the network communication module is used for constructing and managing network data transmission between the monitoring system and each monitored system, and maintaining normal network communication between the monitoring system and all the monitored system; and the monitoring database is used for storing data monitored and acquired by the real-time data collection module.

The embodiments of the application disclose a network fault positioning method. The method comprises the following steps that: a network device detects a fault and determines a fault cause; the network device generates a fault packet according to the fault cause, and sends the fault packet to a fault analysis device; and the fault analysis device receives the fault packet sent by the network device, obtains the fault information corresponding to the fault packet, and determines that the network device is a target device if the fault information meets a preset condition. According to the network fault positioning method, a related device, and a computer storage medium, the problems that the positioning is inaccurate, the efficiency is low, and the like when the network fault caused by a spanning tree protocol is artificially analyzed are solved.

The invention provides a utility-based interlayer coordination method in a WDM (Wavelength Division Multiplexing) optical network, which comprises the following steps of: calculating the utilization rate of resources protected by a WDM layer; calculating the failure recovery utility of a light path of an IP (Internet Protocol) layer; and comparing the failure recovery utility of the WDM layer with the failure recovery utility of the IP layer. When the method is adopted, a failure recovery sequence of determining respective layers can be realized in case of a failure, and a utility-based interlayer coordination mechanism used for balancing the failure recovery time and the utilization rate of the protected resources is designed to be used for dynamically assessing and deciding the failure recovery in comprehensive consideration of the failure recovery time and the utilization rate of the protected resources; thus, the advantages of the recovery of the WDM layer and the recovery of the IP layer can be better utilized, the failure recovery time is reduced, and the utilization rate of the protected resources is increased.

The invention relates to a high-availability virtual machine pooling management system based on roles. According to the virtual machine pooling management method, a master node, a slave node and a backup node are included. The master node is the only logic entrance of a virtual machine resource pool and responsible for managing all nodes in the resource pool. The slave node is mainly responsible for managing a life cycle of a virtual machine of the slave node. The backup node is used for backing up state information of the master node, ensuring consistency with the state information of the master node, and taking over the work of the master node when the master node fails. During a virtual machine pooling management process, all the nodes can switch over three roles along with different conditions, wherein the three roles are the master node, the slave node and the backup node. A serial method is used for ensuring that only one master node and one backup node exist in the system and a double-direction asynchronous communication mechanism is used for ensuring consistency of data of the master node and the backup node. The high-availability virtual machine pooling management system based on the roles improves reliability of a virtualized system and flexibility of management.

The invention discloses switch equipment which comprises master control cards, switching cards and a line card, wherein the master control cards comprise control processors and PCIE (peripheral component interface express) switching chips; the switching cards comprise PCIE switching chips and switched network chips; the line card comprises a PCIE switching chip and a packet processing chip; in the master control cards, the PCIE switching chips are connected with the control processors by up PCIE interfaces, and connected with up PCIE interfaces of the PCIE switching chips of the line card and the switching cards by down PCIE interfaces and control buses; the PCIE switching chips of the line card and the switching cards are connected with a packet processing chip and a switched network chip of a board card by down PCIE interfaces respectively; PCIE networks form a centralized control plane; and the packet processing chip of the line card is connected with the switched network chips of the switching cards by an internal data bus to form a distributed data plane. With the adoption of the switch equipment, the realization complexity of software required to run on the switch equipment can be reduced, and the processing efficiency of the switch equipment is improved.

The invention provides a node failure recovery method for a micro network. The method comprises the following steps that cells are defined, namely, network nodes are classified into different cells, and the same community is set for the nodes classified in the same cell; the network nodes are initialized, namely, according to the mutual relations among the nodes in the same cell, network node roles, network node attributes and network node fields are set, and a single point failure recovery path of each node is precomputed; node failure recovery paths are determined; namely, when any node in the cells has failures, a single point failure negotiation process is carried out; when a plurality of nodes have failures, a failure recovery path dynamic calculation process and a multipoint failure negotiation process are carried out on each failure node in sequence. The node failure recovery method for the micro network is realized on the basis of the thought of local optimum and collective wisdom and efforts, and can rapidly and effectively recovery single point failures, rapidly recovery multipoint failures in the mode of local optimum, avoid tedious calculation and effectively accumulate failure removing experience.

The invention relates to a control method for preventing continuous commutation failure of DC power transmission. A line voltage effective value of a conversion bus at an inversion side is acquired by a three-phase voltage inductor, and a current of a DC system at the inversion side is acquired by a DC current sensor. The change conditions of a DC current and the conversion bus voltage after a fault are considered, meanwhile, the effect of a DC system control link after the fault is considered, a starting voltage value of a low-voltage current limiter is calculated, and the control method is used for preventing continuous commutation failure of DC power transmission caused by abrupt change of the starting voltage of the low-voltage current limiter.

The invention discloses a method for realizing a standby route based on active detection technique. The method comprises the following steps: a primary route and a standby route are configured according to the network topology requirement; the primary route and the standby route are continually subjected to active detection, and the healthy state of each route is maintained; when the primary route is unavailable, the standby route is automatically switched on; and the primary route is switched on once recovers. For overtime caused by passively waiting for the routes, by adopting the method provided by the invention, routing faults can be discovered more quickly and accurately, the fault recovery time is shortened to provide a simple, efficient, flexible and reliable standby route solution for small and medium-sized networks.

The invention discloses a method for recovering a fault of a data center network based on multi-routing configuration, and belongs to the field of data center networks. The method comprises the following steps: using a multi-routing configuration method in the data center network to establish backup topology in combination with the data center network and a quick recovery mechanism, and adaptively adjusting the link weight according to the size of data flow in the network to optimize the routing forwarding strategy of link load distribution. The method comprises a data center network topology modeling module, a backup topology module, a weight optimization module and a load balancing module. The method disclosed by the invention can be used for realizing the balanced load distribution of the data flow between data centers, namely adaptively adjusting the link weight according to the size of data flow on the link to adjust the routing forwarding path, so as to reduce the load of the link with a high utilization rate and reduce the congestion probability of the network.

The invention discloses a method and system for configuring protective resources in dense light wave multiplexing networks according to 2:N protection. The method comprises the steps that alternative route sets are calculated by using the shortest path algorithm K; according to idle capacity in the networks at current time and the weight ratio of a work route, a first protective route and a second protection route, three routes, having irrelevant shared risk link groups, of the alternative route sets are selected to constitute a work-protection route set; wave duct resources are distributed for the work routes and the protective routes in the work-protection route set. According to the method and system, the use rate of the resources in the high-dense light wave multiplexing networks can be improved, fault recovery time is shortened, and reliability of the networks is improved.

The invention discloses a locating device for fault discharge of a cable. The locating device is characterized by comprising an optical fiber vibration module, a sensing optical fiber, a high-voltage cable, a high-voltage pulse module, and a data acquisition system, wherein the optical fiber vibration module is connected with the sensing optical fiber and is laid along the high-voltage cable; the high-voltage pulse module outputs a pulse signal which is injected into the high-voltage cable; a vibration signal is generated at a discharge point of the high-voltage cable , and then is returned to the optical fiber vibration module through the sensing optical fiber; the data acquisition system acquires a distributed vibration signal which is measured by the optical fiber vibration module and along the cable and a synchronous pulse signal of the high-voltage pulse module and then sends the signals to a data processor which analyzes and processes the signals to obtain the specific location of the discharge point. Due to the adoption of the structure, the locating device can locate a fault accurately so as to save the human resources and reduce the waste of cable caused by maintenance, is high in fault locating speed and can locate the fault point within several minutes in case of the fault discharge of the cable so as to shorten the fault recovery time of the high-voltage cable; moreover, the device can locate a plurality of fault discharge points at the same time so as to implement a real distributed cable fault location.

The invention provides a method, device and system for processing equipment failures in a virtual machine system, and relates to the technical field of information. The method comprises the following steps: obtaining failure factors of the virtual machine system; positioning a host server, a virtual machine and/or storage equipment with failures in the virtual machine system according to the failure factors; and carrying out switching processing on the host server, the virtual machine and/or the storage equipment with failures. According to the scheme, the defect of only recognizing the failure of the host server in the prior art is solved, the host server, the virtual machine and/or the storage equipment with failures in the virtual machine system can be positioned, and switching processing can be carried out, so that the failure restoration time is shortened and the failure positioning accuracy is improved.

The invention provides a failure recovery method, which comprises: when a failure occurs, a detection node determines the recovery connection of the work connection influenced by the failure; the detection node sends the recovery connection information to the work node corresponding to the work connection influenced by the failure; the work node acquires the recovery connection information and establishes corresponding recovery connection according to the recovery connection information. The invention further provides corresponding failure recovery system, detection node network equipment andwork node network equipment. By the calculating of recovery connection and the informing are performed by the detection node network equipment in concentration, the invention effectively avoids resource conflict, reduces connection return in the network, and reduces network failure recovery time.

The invention discloses a data backup and recovery method and device, a computer device and a storage medium, and belongs to the technical field of data processing. The method comprises: when data backup is conducted on a main database, synchronizing data of the main database to a plurality of backup databases at different time intervals in a delayed mode; when an error occurs in the main database, determining a target backup database used for performing data recovery on the main database in the backup databases; and performing data recovery on data of main database by using data of the target backup database. Compared with a data recovery method in the prior art, the data recovery method can rapidly recover the main database, the fault recovery time can be obviously shortened, the fault recovery failure can be avoided, and the overall usability of the database system is improved.

The application discloses a distributed storage fault recovery information management system and method. The method comprises the following steps: a recovery scheme management module sends an error information query log to a fault detection module, and presents the screened fault recovery scheme to a user, and sends the fault recovery scheme selected by the user to the fault recovery scheme base; the fault detection module positions the error reason by analyzing the error information query log, and sends the error reason to the fault recovery scheme base; the fault recovery scheme screens out an applicable fault recovery scheme by through the comparison and analysis according to the error reason, and sends the fault recovery scheme to the recovery scheme management module; and a fault recovery operation packet corresponding to the selected fault recovery scheme is sent to the fault recovery module; the fault recovery module resolves the fault recovery operation packet to perform the fault recovery action. Through the mutual effect of the above-mentioned recovery scheme and three modules, the system fault problem can be fast solved, the fault recovery time is shortened, and the fault recovery efficiency and the system usability are improved.

The invention discloses a device and method for failure recovery; a media recovery controller is used for monitoring working state of a media processing unit through a media monitoring unit and recording the necessary media order and key media data from the main control unit in the media order queue and the media data queue; when a failure occurs in the media processing unit, the media recovery controller will reset the failure and send the necessary media order and key media data stored in the media order queue and the media data queue to the media processing unit and empty all orders and data stored in the media order queue and the media data queue after recovering failure by the media processing unit. By using the device and method in the invention, the media processing unit can be quickly reset to the state before the failure so as to shorten the failure recovery time of the media processing unit.

The invention relates to an Ethernet port fault detection and automatic correcting technology and discloses a method and a system for automatically correcting faults of Ethernet ports on the basis that consumed time for fault correcting of Ethernet ports is long, data interruption time is long and manual intervention is required in the prior art. The technical scheme includes that polling is used for monitoring states and automatic correction mechanisms of Ethernet ports, and the system is composed of a port monitoring module and a port correcting module. The port monitoring module screens Ethernet ports to be monitored and monitors Ethernet ports. When faults of Ethernet ports are monitored, Ethernet port fault messages are sent to the port correcting module for processing. According to the method and the system, manual intervention is not required, the fault restoration time is greatly shortened, and the reliability of communication service transmission is guaranteed. The consumed time from starting of faults to automatic restoration of faults can be controlled within milliseconds.