22 results about "Anycast" patented technology

A node, in a first network, includes circuitry configured to determine a next hop as decided by Border Gateway Protocol (BGP) is an anycast prefix to a Route Reflector (RR) interconnecting the first network with a second network, responsive to the next hop being the anycast prefix to the RR, create a tunnel with a destination based on the anycast prefix, and utilize the tunnel for traffic having the next hop as the anycast prefix to the RR. The anycast prefix is assigned to two or more RRs interconnecting the first network and the second network. A first path is decided by BGP based on a BGP Path Selection Algorithm that is independent of a second path determined by Interior Gateway Protocol (IGP). The first path and the second path can be different, and wherein tunnel is utilized to ensure the traffic always follows the first path.

The invention discloses an exit selection method and system for multi-door lock selection, and the method comprises the steps: obtaining a device identifier, a router ID and a transaction ID of a target door lock according to a service request sent by a user APP to an anycast address; according to a device identifier carried in a control connection request initiated by a user APP, a receiving door lock carries out identifier comparison, and if matching fails, an intelligent forwarding mechanism based on a router ID and a transaction ID is triggered; according to an intelligent forwarding mechanism, an error receiving door lock forwards the request message to a specified router, and correct delivery of the request message is realized; and according to a specific path flag bit in a confirmation message returned by the correct door lock, the user APP and the router along the way record the binding relation between the transaction ID and the path, and it is ensured that a subsequent control instruction is transmitted along the binding path. By utilizing the embodiment of the invention, the control instruction can be quickly, stably and reliably transmitted from the user to the target door lock, and the response efficiency and the control success rate of the system are improved.

Methods and techniques are provided that employ multicast transmission and anycast transmission to coordinate and distribute tasks and / or processing requests amongst groups of resources on a network. In one embodiment, the groups of resources can include nodes or other resources of a blockchain network that implement all or part of a particular blockchain protocol (e.g., Bitcoin SV protocol), and / or service providers that provide services to a blockchain-related organisation, group or network.

A method of establishing a dynamic PUD session for an anycast service by means of an Anycast Application Function (AF) includes: subscribing to a PDU session establishment event exposure notification for traffic targeting an anycast IP address; receiving a user plane management event exposure notification message including a UE address and optional UE location information via a Network Exposure Function (NEF) from a Session Management Function (SMF) determining that an AF notification trigger has been satisfied through the anycast IP address in accordance with a PDU session establishment request for an anycast IP address-based service of UE; selecting an optimal Data Network Access Identifier (DNAI) for the requested PDU session on the basis of currently monitored network and computer metrics and the UE location information; and transmitting the selected DNAI and routing information to the NEF through a preset message.

Anycast addressing is utilized to support the connection of multiple application connectors fronting an application(s) to a network element and anycast routing of network traffic destined for the application(s). When an application is indicated for onboarding in a tenant's network fabric, a network controller allocates virtual and anycast addresses to the application. Allocation of anycast addresses is per domain name and port / protocol combination. Upon determining that the application is available, the application connector(s) advertises reachability of the application via the anycast address. The network controller orchestrates configuration of a domain name system entry that resolves the application name to its virtual Internet Protocol (IP) address and destination network address translation rules that translate the virtual IP address to the anycast address and the anycast address to the application's private IP address. Application network traffic can thus be forwarded to the application via any application connector that advertised the anycast address.

A detection method based on a network service, a device, a program product, and a storage medium, relating to the technical field of Internet and used for detecting a network service system. The network service system comprises an access point device cluster and a plurality of intermediate network devices connected to the access point device cluster; at least one Anycast address is configured for the access point device cluster; different Anycast addresses correspond to different types of network services; different types of network services indicate that a destination end is accessed by means of different network paths; and each network path involves one or more intermediate network devices. The method comprises: sending to an Anycast address a plurality of Anycast detection packets accessing a destination end; upon successfully receiving the Anycast detection packets, access point devices in an access point device cluster sending the Anycast detection packets to the destination end on the basis of a target Anycast address in the Anycast detection packets by means of a target network path corresponding to the target Anycast address; and on the basis of the number of successfully responded Anycast detection packets among the plurality of Anycast detection packets, determining whether a network service system is normal.

A content distribution system as discussed herein includes one or more instances of communication management hardware. The communication management hardware tracks a status of multiple different groupings of edge nodes in a content delivery network. Each of the edge nodes is operative to distribute content (such as video content, video segments, digital assets, etc.) in a network environment. The communication device is redirected to the communication management hardware for selection of an appropriate edge node to deliver content to the communication device. To provide load balancing, the communication management hardware selects an appropriate edge node from the different available edge nodes in different edge node clusters. The communication management hardware then communicates an identity of the selected edge node to the communication device. The communication device then communicates with the selected edge node to retrieve the content.

The application discloses a selection method and system of a multi-door lock pan-tilt, the method comprising: according to a video connection request sent by a user APP to a anycast address, selecting an optimal door lock through anycast routing to establish an initial connection, and receiving a connection response containing a device identifier, a router ID and a transaction ID; according to a pan-tilt control requirement initiated by the user APP, constructing a control connection request with the router ID as a destination address and carrying the device identifier and the transaction ID, and forwarding the request to a specific door lock through a transaction ID mapping mechanism of the router; according to a connection confirmation message returned by the specific door lock, establishing a session path binding based on the router ID and the transaction ID; and according to a session path binding state, ensuring that an instruction is accurately sent to the specific door lock through address conversion of the router. By using the embodiment of the application, the accuracy of pan-tilt control instruction transmission, the connection reliability and the overall expansibility of the system can be improved.

A dynamic anycast service-supported packet data unit (PDU) session establishment method includes: (a) transmitting / receiving a session management context (CreateSMContext) request / response with an Access Management Function (AMF) by means of a Session Management Function (SMF) when there is a PDU session establishment request for an anycast service of UE; (b) performing a PDU session establishment procedure for logical connection between the UE and a data network without selecting a User Plane Function (UPF) for packet transmission and reception by means of the SMF; and (c) sending session information including Core Network (CN) Tunnel Info to a Computing-Aware Traffic Steering-Mobile User Plane-Controller (CATS-MUP-C) through a Nsmf_EventExposure service by means of the SMF, wherein the CATS-MUP-C sets up uplink by a segment routing underlay network by converting the session information into routing information of a UE-RAN and the data network.

Disclosed herein are system, method, and computer program product aspects for implementing anycast gateways. Some aspects of this disclosure relate to a method including receiving, by an access node, a first TLV from a first gateway. The first TLV includes a CMAC address for the first gateway, an IP address of the first gateway, and an L2 I-SID associated with the first gateway. The method further includes receiving, by the access node, a second TLV from a second gateway, where the second TLV includes the CMAC address, the IP address, and the L2 I-SID. The method further includes, in response to determining that the L2 I-SID exists in an LSDB of the access node, determining that the first gateway is closer to the access node than the second gateway. The method also includes storing the CMAC address in a database to point to the first gateway based on the determination.

This provides a method for identifying a load balancer to select a cache within a Content Delivery Network (CDN) to use to deliver requested objects to a user. [Solution] The method involves the user device performing a DNS lookup to identify anycast IP addresses of multiple load balancers in the CDN, initiating anycast routing using the anycast IP address, and automatically identifying the nearest load balancer. Once the identified load balancer selects a cache, it closes the anycast connection with the user device and uses an HTTP redirect to provide the user device with a unicast route to the selected cache. The user device then establishes a unicast connection with the cache to retrieve an object (e.g., stream).

Disclosed herein are system, method, and computer program product aspects for implementing anycast gateways. Some aspects of this disclosure relate to a method including receiving, by an access node, a first TLV from a first gateway. The first TLV includes a CMAC address for the first gateway, an IP address of the first gateway, and an L2 I-SID associated with the first gateway. The method further includes receiving, by the access node, a second TLV from a second gateway, where the second TLV includes the CMAC address, the IP address, and the L2 I-SID. The method further includes, in response to determining that the L2 I-SID exists in an LSDB of the access node, determining that the first gateway is closer to the access node than the second gateway. The method also includes storing the CMAC address in a database to point to the first gateway based on the determination.

The application provides a computing power network service anycast method and system, and the steps of the method include: a gateway forwards a service request to a controller; the controller calculates the transmission cost and propagation cost of the gateway to each cloud node and edge node based on the transmission distance and bandwidth of the gateway to the cloud node and the edge node, calculates a network transmission cost matrix based on the transmission cost and propagation cost, calculates an arrival rate matrix based on the forwarding probability weight of the gateway to the cloud node and the edge node, calculates a target anycast forwarding weight strategy matrix by using a Sinkhorn algorithm based on the arrival rate matrix and the network transmission cost matrix, and the target anycast forwarding weight strategy matrix includes the weight value of each cloud node and edge node; the number of positions of the cloud node and the edge node in a queuing queue is determined based on the weight value of the cloud node and the edge node, the queuing queue is constructed, and the processing task corresponding to the service request is distributed to the corresponding cloud node or edge node based on the queuing queue.

This invention discloses a method and system for reliable acquisition of mineral video from mobile devices. Each mobile device is configured with the same anycast service IP address. A gateway router establishes a record list including the mobile device's identifier, IP address, and MAC address, and announces the mobile device's connection information to the network. When a client requests a video stream from a mobile device, the gateway router receives the request message, finds the corresponding MAC address based on the mobile device's identifier and IP address, and sends the request to the mobile device. When a mobile device switches its connected wireless access point during movement, the second gateway router after the switch announces the mobile device's connection information to the network, while the first gateway router before the switch announces the cancellation of the mobile device's connection information to the network. This invention effectively enhances the reliability of video data transmission from mobile devices in mining environments, achieving an effective mechanism for uninterrupted and reliable video data acquisition even during gateway switching scenarios.

The specification provides a network service-based probing method, device, program product and storage medium, relates to the technical field of Internet, and a network service system comprises an access point device cluster and a plurality of intermediate network devices connected with the access point device cluster; the access point device cluster is configured with at least one Anycast address, and different Anycast addresses correspond to different types of network services; different types of network services refer to accessing a destination through different network paths, and the network path comprises one or more intermediate network devices; the method comprises the following steps: sending a plurality of Anycast probing packets for accessing the destination to the Anycast address; in the case that the Anycast probing packet is successfully received, the access point device sends the Anycast probing packet to the destination through a target network path corresponding to a target Anycast address based on the target Anycast address in the Anycast probing packet; and whether the network service system is normal is determined based on the number of successful responses in the plurality of Anycast probing packets.

The application discloses a public resolver anycast node enumeration method and device based on a forwarding relationship inference. The method comprises the following steps: obtaining a plurality of indirect analyzers which have a forwarding relationship with a public resolver to be inferred, forming an initial forwarding relationship set based on all the forwarding relationships, determining initial forwarders served by the public resolver to be inferred based on forwarding relationship measurement data, and forming an initial forwarder set based on all the initial forwarders; obtaining autonomous domain organization information of each indirect analyzer in the initial indirect analyzer set in a detection mode, and obtaining an initial indirect analyzer autonomous domain organization information set; obtaining forwarders and candidate indirect analyzers involved in a real-time forwarding relationship measurement packet and a forwarding relationship response packet transmission process; and performing indirect analyzer aggregation. The method reduces the measurement resources required for public resolver anycast node enumeration, and improves the recall rate of public resolver anycast node enumeration.

An example egress network device includes at least one computer processor and a memory. The memory includes instructions that cause the at least one computer processor to receive messages from each of a plurality of ingress network devices. Each message specifies a multicast source as an anycast address that belongs to two or more sources, a multicast group, and a customer site identifier that uniquely identifies a customer network device via which the anycast address is reachable. The instructions cause the at least one computer processor to select, based on the customer site identifiers, one of the plurality of ingress network devices to which to send a multicast join message of a plurality of multicast join messages for the multicast source and multicast group. The instructions cause the at least one computer processor to send the multicast join message to the selected one of the plurality of ingress network devices.

This application relates to the field of communication technology, and provides a data forwarding method, apparatus, electronic device, and storage medium. The method includes: distributively deploying multiple instance replicas of user plane network elements on a mobile IP bearer network; each instance replica includes a primary instance replica and multiple secondary instance replicas; the primary instance replica is used to synchronize configuration and status information of the primary instance replica with each secondary instance replica; and announcing anycast address routing messages of the service interfaces of each instance replica to forwarding devices in the mobile IP bearer network, so that the forwarding devices send the user's uplink traffic to a target instance replica according to the anycast address routing messages, and the target instance replica forwards the user's uplink traffic according to the configuration and status information. This application, by distributively deploying multiple instance replicas of user plane network elements on a mobile IP bearer network, achieves automatic selection of the nearest instance replica of the user plane network element for forwarding traffic data through dynamic routing of the bearer network, thereby improving data forwarding efficiency.

Anycast IP addressing and policy-based forwarding are implemented so that resources deployed in association with different accounts of a tenant but have overlapping IP addresses appear distinct to the tenant. A service that executes on a network controller configures a DHCP address pool for an account for which associated resources are indicated for deployment. The service also orchestrates instantiation of one or more connectors configured to front the resource(s) and allocates an anycast IP address to the connector(s) that is unique with respect to other connectors that front resources associated with the same account or different accounts. The service then creates a policy-based forwarding rule to forward network traffic originating from an IP address within the account's DHCP address pool and with a destination address that matches the resource(s) IP address to the anycast IP address allocated to the connector(s) that fronts the resources.

Systems and methods for domain Border Router (BR) resiliency with segment compaction in Segment Routing include obtaining a compressed segment list for a calculated path in a Segment Routing network, wherein the Segment Routing network includes a plurality of domains with the calculated path being through at least two domains, wherein the compressed segment list includes a plurality of Segment Identifiers (SID) each SID identifying a segment, and wherein, when expanded, the compressed segment list matches the calculated path; analyzing the compressed segment list for any domain border routers between two domains of the at least two domains to determine associated anycast SID for the any domain border routers; and utilizing the associated anycast SID in the compressed SID list for resiliency between the two domains.

The application discloses a multi-door lock selection exit selection method and system, and the method comprises the following steps: obtaining the device identifier, router ID and transaction ID of a target door lock according to a service request sent by a user APP to an anycast address; performing identifier comparison by a receiving door lock according to the device identifier carried in a control connection request initiated by the user APP, and triggering message forwarding based on the router ID and the transaction ID if the comparison fails; forwarding the request message to a specified router by an error receiving door lock, so that the correct delivery of the request message is realized; and recording the binding relationship between the transaction ID and the path according to a specific path flag bit in an acknowledgement message returned by a correct door lock, so that the user APP and the routers along the path ensure the transmission of subsequent control instructions along the binding path. By using the embodiment of the application, the fast, stable and reliable transmission of the control instructions from the user to the target door lock can be realized, and the response efficiency and the control success rate of the system are improved.