27 results about "Multiple homing" patented technology

A method for use in a system including an Ethernet Virtual Private Network (EVPN) core network and a VXLAN data plane, a first gateway device GW1 and a second gateway device GW2 operating in an all-active multihoming mode to interconnect the EVPN core network and VXLAN data plane, is described. The method includes establishing, by the second gateway device GW2, a VXLAN tunnel to a remote VTEP X before traffic is sent by the remote VTEP X and received by the second gateway device GW2, but after traffic is sent by the remote VTEP X and received by the first gateway device GW1. wherein the first and second gateway devices GW1 and GW2 use an anycast IP address as a source address for VTEP X.

An ingress provider edge (IPE) device of a provider network receives a packet from outside of the provider network. The IPE device determines the packet is to be transmitted to a device on an Ethernet segment on which the IPE device is multihomed. The IPE device transmits the packet on the Ethernet segment even though the designated forwarder for the Ethernet segment is from IPE device. Furthermore, the IPE device labels the packet with an IPE identifier that identifies the IPE device for the packet, and forwards the labeled packet to other devices on the provider network. An egress provider edge (EPE) device that is (a) multihomed on the same Ethernet segment as the IPE device and (b) is the designated forwarder for the Ethernet segment receives the packet. The EPE device refrains from transmitting the packet on the Ethernet segment.

A method by a network device functioning as a provider edge (PE) in an ethernet virtual private network (EVPN) to prevent transient loops between multi-home peer PEs. The method includes advertising a first EVPN label to one or more PEs that are multi-home peer PEs of the PE, advertising a second EVPN label to one or more PEs that are not multi-home peer PEs of the PE, receiving first traffic for a CE that is encapsulated with the first EVPN label as opposed to the second EVPN label, and discarding the first traffic in response to determining that a link between the PE and the CE is not operational and the first traffic for the CE is encapsulated with the first EVPN label.

Techniques are described herein for resolving conflicts in role statuses assigned to a customer edge device by multiple provider edge devices in communication with that customer edge device. In embodiments, such techniques may involve receiving information about a customer edge device in communication with the first provider edge device and storing, based on the information about the customer edge device, an indication of a first role status of the customer edge device. The techniques may further involve receiving, from at least one second provider edge device in communication with the customer edge device, an advertisement message that includes a second role status of the customer edge device, comparing the first role status to the second role status, and upon determining that the first role status does not match the second role status, updating the first role status of the customer edge device.

A first network device may receive a first advertisement of a network destination from a second network device and may detect multihoming with the second network device. The second network device may detect the multihoming with the first network device. The first network device and the second network may enable egress protection for the multihoming. The first network device may allocate, from a first pool, a protection group identifier for a group of multihomed network devices and may allocate, from a second pool, a network destination identifier for the network destination. The first network device may provide, to a network and the second network device, a second advertisement that includes the protection group identifier and the network destination identifier. The protection group identifier and the network destination identifier may cause the network to direct traffic for the network destination, via the group of multihomed network devices.

The application discloses a fault processing method and device, equipment and a storage medium, and relates to the technical field of communication. The method is applied to an EVPN multi-homing networking, the EVPN multi-homing networking comprises a CE, a first PE and N second PEs, the CE, the first PE and the N second PEs are connected with each other, N is an integer greater than 1, and the method comprises the following steps: when detecting that a link channel between the first PE and the CE for forwarding traffic data fails, obtaining an escape channel link table, and determining a target PE from the N second PEs according to the escape channel link table; according to the target PE, determining a target link channel for forwarding the traffic data, and forwarding the traffic data according to the target link channel, so that convergence of the traffic data is quickly completed.

The present application relates to a network access method, apparatus, computer equipment, storage medium and computer program product, which are applied to the PCF network element of the home location corresponding to the user terminal. The method includes: in response to a general DNN session establishment request initiated by the user terminal at the visited location, obtaining a target service range mapping table corresponding to the dedicated DNN contracted with the user terminal; in the target service range mapping table, determining the nearest home service range that matches the location information of the visited location as the target home service range; sending the policy information obtained based on the target home service range to the SMF network element of the visited location; the SMF network element of the visited location is used to send a dedicated DNN session establishment request to the target nearest home location SMF network element that matches the target home service range and the dedicated DNN contracted with the user terminal according to the policy information, so as to connect the user terminal to the private network of the nearest home location. The use of this method can optimize the service delay of dual-domain private network users in multi-home access scenarios.

The present disclosure provides a network device multi-homing management method, a network device multi-homing management system, an electronic device, a computer readable medium, and a computer program product, the network device multi-homing management method being applied to a tree hierarchy controller network comprising at least three levels of controllers, the method comprises the following steps: a network device establishes a first management channel with a first hierarchy controller in the tree hierarchy network; based on the establishment of the first management channel, synchronizing the registration information of the network equipment to at least one higher-level controller by the first-level controller; and carrying out collaborative management on the network equipment by the first-level controller and the at least one higher-level controller. According to the invention, collaborative management of the network equipment among the multi-level controllers is realized, registration information reporting and strategy issuing unification are supported, and reliability, flexibility and cross-domain strategy consistency of equipment management are improved.

A system and method for handling multicast traffic in Ethernet Virtual Private Network multi-homed networks includes receiving a first route table for a first route, determining that the first route table is associated with another peer device in the multi-home network, generating a second route table for a second route, determining a route to transmit data and the determined route is the first route or the second route based on the first preference value and the second preference value, and transmitting the data using the determined route.

The invention provides a method and equipment for realizing horizontal segmentation forwarding. The method comprises the following steps: receiving an opposite-end shared Ethernet segment identifier ESI announced by opposite-end equipment of a redundant backup group; the local shared ESI is notified to the opposite terminal equipment; receiving a broadcast unknown unicast multicast (BUM) message which is sent by the opposite terminal equipment and carries the opposite terminal shared ESI; the opposite terminal with the BUM message peeled off shares the ESI; searching a multi-homing access port of the multi-homing access equipment in a working state on the opposite-end equipment; determining that the BUM message is not sent through the local multi-homing access port connected with the multi-homing access equipment; and sending a BUM message through a local single-homing access port of the single-homing access equipment.

The application belongs to the technical field of unmanned aerial vehicle communication, and particularly relates to an unmanned aerial vehicle communication system based on IPv6 multi-homing and multi-path transmission. The system configures independent IPv6 addresses for multiple heterogeneous links of the unmanned aerial vehicle, establishes a binding relationship between the links and the addresses, and generates a service session identifier; address-level state vectors are generated by periodically collecting link state parameters and associating the link state parameters with the IPv6 addresses; the available IPv6 addresses are comprehensively scored based on the state vectors, and the sending proportion of each address is determined according to the service category, so that data fragments are bound to different IPv6 source addresses and sent in parallel; when the link deteriorates, address-level degradation and rapid traffic switching are performed without changing the session identifier; the receiving end uniformly recombines the fragments from the multiple addresses according to the session identifier and the fragment sequence number, and delivers the fragments to the upper layer application. The application improves the communication throughput, stability and continuity of the unmanned aerial vehicle in a multi-link environment.

The embodiment of the invention provides a multi-homing disaster recovery system and method based on an EPDT230M digital trunking system, and the system comprises a management module which is configured to manage the configuration information of a core network, the working state of the core network, and the link state between the core networks; the core network comprises a master home core network and a plurality of slave home core networks; the data synchronization module is configured to synchronize redundant data to the slave home core network in real time when the master home core network performs service processing; wherein the management module dynamically adjusts the working states of the system according to the system configuration information and the link states and registration states of the master home core network and the plurality of slave home core networks, the working states comprise service entry, service waiting and service exit, and only the core network in the working state of the service entry carries out service processing; the data synchronization module supports data active redundancy and data passive redundancy and comprises a dependency detection mechanism and a data packet retransmission mechanism. And non-perception, quick and high-reliability pipe connection is realized.

An Optical Line Terminal (OLT) includes a transmitter and a receiver, each connected to a Passive Optical Network (PON) having protection therein where the OLT is in a protection group with one or more additional OLTs, and wherein the OLT is in a Standby state; and circuitry configured to turn on the transmitter based on detection of a fault in the PON, and check if the fault is still detected after the transmitter is turned on, and, responsive to the fault not being detected after the state of the transmitter is turned on, change the OLT to an Active state.

In one embodiment, a method comprises determining, by a first networking device, that a first subflow of a multipath transmission control protocol (MPTCP) connection has been established between a first internet protocol (IP) address of a first computing device and an IP address of a second computing device, wherein the first computing device is multihomed to the first networking device and a second networking device. The method also includes determining, by the first or second networking device, a request to establish a second subflow of the MPTCP connection between a second IP address of the first computing and the IP address of the second computing device. In addition, the method includes advertising, by the first networking device, a primary IP address (PIP) of the first networking device for the first subflow and advertising, by the second networking device, a PIP of the second networking device for the second subflow.

The application discloses a three-level architecture-based intelligent inspection method and device for an oilfield station, and relates to the technical field of oilfield gathering and transferring station inspection, which comprises the following steps: S1, the physical structure of the current oilfield gathering and transferring station is split into a region layer, a device layer and a point layer, an index table is established through a hash index to construct a three-level mapping table, the monitoring devices are multi-homedly bound, the sequence of the region layer, the device layer and the point layer is used to dequeue, a round of inspection sequence is constructed, a mechanism equation of a key process is constructed in a model layer and is linearized online to output a prediction residual error, the confidence is improved when the alarms are consistent, and when conflicts occur, a hierarchical Bayesian method is used to perform prior correction and threshold self-adaptation, and a physical event is output when the alarm is confirmed; and S2, multi-source alarms are generated based on sensor raw data. The application shortens the fault positioning path and improves the diagnosis accuracy by systematically managing the station objects, integrating multi-source alarms and adaptively determining faults.

The invention provides a path construction method and device for a multi-homing map, electronic equipment and a storage medium, and the method comprises the steps: generating basic search terms with direction information based on a basic connection relation of track equipment, and combining the basic search terms into a small path which has no internal branch and has a unique trend. According to the method, when the path construction request containing the starting point and the ending point is responded through the preprocessing mechanism, the whole path can be quickly constructed by combining the matched small paths, so that combination matching can be directly carried out based on the pre-generated small paths, and the path construction efficiency is improved. According to the method, repeated retrieval and direction judgment on the equipment connection relation in the whole path searching process are avoided, so that backtracking operation caused by improper direction selection in a traditional method is effectively eliminated, and the efficiency and stability of path construction are improved. The same track equipment belongs to different small paths according to different directions, so that natural multiplexing of the equipment in a multi-path scene is realized, and the manufacturing cost of a map is reduced.

This application provides a communication method and apparatus. The method is applied to a first PE, which is located within an EVPN network. The EVPN network also includes a second PE. The CE establishes connections with the first PE and the second PE through different links, respectively. The first PE and the second PE form a multi-homed group. The method includes: when the second PE fails, obtaining an ESI from the EAD per ES route sent by the second PE, wherein the ESI is an identifier of the same ES associated with the first PE and the second PE; obtaining a MAC-IP route sent by the second PE including the ESI based on the ESI; obtaining a first MAC entry generated corresponding to the MAC-IP route based on the MAC-IP route; and converting the first MAC entry into a second MAC entry.

The invention relates to the technical field of falling block homing, in particular to a drilling falling block homing method and device based on mineral data, electronic equipment and a storage medium. Determining a plurality of homing well depth methods, selecting k depths from the basic mineral data of different depths in the whole well section by utilizing each homing well depth method, and outputting the measurement result of each depth, wherein the measurement result of the k depths and the mineral data of the to-be-homed falling block meets a set threshold condition; and determining the comprehensive index of each selected depth, wherein the depth with the maximum comprehensive index is the most suspected source well section of the to-be-homed falling block. Compared with a traditional method which mostly depends on visual inspection and empirical judgment, the method has the advantages that the to-be-homed falling blocks and mineral data of different well sections are collected, comprehensive quantitative analysis is carried out by applying multiple homing well depth methods, the source well section of the to-be-homed falling blocks is accurately judged, the homing accuracy of the falling blocks is greatly improved, and the homing accuracy of the to-be-homed falling blocks is improved. And a reliable basis is provided for subsequent well wall stability judgment.

A method for a network device to act as a Provider Edge (PE) in an Ethernet Virtual Private Network (EVPN) to prevent transient loops between multi-homed peer PEs. The method includes: advertising a first EVPN label to one or more PEs that are multi-homed peer PEs acting as PEs, advertising a second EVPN label to one or more PEs that are multi-homed peer PEs not acting as PEs, receiving a first traffic of a CE encapsulated with the first EVPN label instead of the second EVPN label, and discarding the first traffic in response to determining that a link between the PE and the CE is not operable and the first traffic of the CE is encapsulated with the first EVPN label.

A Provider Edge (PE) node is configured to provide a Layer 2 Virtual Private Local Area Network (LAN) service (VPLS) having a simplified control plane. The PE node includes circuitry configured to receive a packet from a second PE node in the network, wherein the packet includes (1) a Destination Media Access Control (MAC) address associated with a destination Customer Edge (CE) node, (2) a source MAC address associated with a source CE node, and (3) a Virtual Local Area Network (VLAN) Identifier used to represent one of the second PE node and a multihome configuration including the second PE node, and learn the source MAC address associated with the source CE node as being reachable via the one of the second PE node and the multihome configuration.

The invention relates to the technical field of online car-hailing service platform pricing, and discloses an online car-hailing platform bilateral pricing optimization method and system based on user preference differences and multi-homing behaviors, and the method comprises the steps: obtaining the historical behavior data of passengers and drivers, quantifying the price sensitivity and quality sensitivity, and constructing user preference feature portraits; based on a significance theory and a Hotelling model, respectively constructing utility functions including heterogeneity preferences of passengers and drivers, and depicting selection behaviors of different user groups; the market structures of passenger single homing, multi-homing and driver single homing are distinguished, a double-homing platform competition model is constructed, and the pricing game process between platforms is simulated; solving the optimal pricing and profit function of the platform under the combination of the four user sensitive types through a reverse induction method; and analyzing the action mechanism of the significant thinking and the multi-homing behavior of the user on the pricing strategy. According to the method, the problems of pricing failure and profit loss caused by neglecting user preference heterogeneity and multi-platform use behaviors of a traditional online car-hailing platform are effectively solved, and the user matching efficiency, the resource allocation capability and the overall market competitiveness of the platform are remarkably improved through refined modeling and strategy optimization.

An Optical Line Terminal, OLT, (14A, 14B) with Passive Optical Network, PON, protection (12) includes a transmitter and receiver in a Standby state, grouped with additional OLTs. Circuitry detects faults (24, 50, 70) within the PON (10), activates the transmitter upon detection (52, 54), and subsequently verifies fault clearance (56). If cleared, the OLT transitions from Standby to Active state and notifies an associated router (18A, 18B) (60). If the fault persists, the transmitter is turned off (62). The OLT can be implemented as a pluggable module in routers, communicating state changes by toggling pins or via register reads. Coordination between multiple OLTs is unnecessary, thereby preventing an Active / Active state (110).

Aspects of the subject disclosure may include, for example, identifying, by an apparatus, a media access control (MAC) address of a customer edge (CE) device, and advertising the MAC address in a MAC route based on the identifying, wherein the MAC route is tagged with an extended community that identifies an Ethernet Segment (ES) associated with the apparatus, the extended community enabling another apparatus that is also associated with the ES to import the MAC route. Other embodiments are disclosed.

This invention provides a method and system for drone nest control based on image analysis. The invention relates to the field of drone nest control technology. The method includes acquiring information on multiple homing drones and multiple nests, whereby the homing drone information includes battery level and location information; clustering the multiple homing drone information to obtain K clusters; determining the nest information corresponding to each homing drone in the low-battery emergency homing cluster and the nest information corresponding to each representative homing drone in each cluster based on the low-battery emergency homing cluster, multiple representative homing drones in each cluster, and multiple nests corresponding to each cluster; generating homing route information for each homing drone based on the nest information corresponding to each homing drone; generating nest control commands based on the homing route information of each homing drone; and controlling multiple nests based on the nest control commands. This method can accurately allocate homing positions for multiple drones and formulate suitable nest cooperative control schemes.

The invention discloses an oil field station intelligent inspection method and device based on a three-level architecture, and relates to the technical field of oil field gathering and transportation station inspection, and the method comprises the following steps: S1, splitting a physical structure of a current oil field gathering and transportation station into a region layer, an equipment layer and a point location layer, building an index table through a Hash index, and constructing a three-level mapping table, meanwhile, monitoring equipment is subjected to multi-homing binding, dequeueing is conducted according to the hierarchical sequence of areas, equipment and point locations, a routing inspection sequence of this round is constructed, a mechanism equation of a key process is constructed in a model layer, prediction residual errors are output in an online linearization mode, the confidence coefficient is improved when alarms are consistent, and prior correction and threshold value self-adaption are executed through hierarchical Bayes when contradictions occur; if the alarm is confirmed, outputting a physical event; and S2, performing multi-source alarm generation based on the original data of the sensor. According to the method, the station field object is systematically managed, multi-source alarm is integrated, and the fault is adaptively judged, so that the fault positioning path is shortened, and the diagnosis precision is improved.

The invention belongs to the technical field of unmanned aerial vehicle communication, and particularly relates to an unmanned aerial vehicle communication system based on IPv6 multi-homing and multipath transmission. The system configures independent IPv6 addresses for a plurality of heterogeneous links of the unmanned aerial vehicle, establishes a binding relationship between the links and the addresses, and generates a service session identifier; the method comprises the following steps: periodically collecting link state parameters and associating the link state parameters with an IPv6 address to generate an address-level state vector; the available IPv6 addresses are comprehensively scored based on the state vectors, the sending proportion of each address is determined according to the service category, and data fragments are bound to different IPv6 source addresses and sent in parallel; when the link is degraded, on the premise that the session identifier is not changed, address level degradation and flow rapid switching are executed; and the receiving end carries out unified recombination on the fragments from the multiple addresses according to the session identifier and the fragment serial number, and delivers the recombined fragments to an upper-layer application. According to the invention, the communication throughput rate, stability and continuity of the unmanned aerial vehicle in a multi-link environment are improved.

The present invention discloses a method and apparatus for implementing EVPN multi-homing by modifying the BGP routing mechanism. The method comprises the following steps: in an EVPN multi-homing network, a switching device determines whether a received BGP neighbor route is a Type 1 route; and if so, transmits the BGP neighbor route to a neighboring device and distributes the route to a local forwarding plane, which is used to forward data. This method effectively solves the problem of Type 1 routes from remote PEs not being selected, and Type 1 routes from different PEs not being selected and distributed.