53 results about "Anycast" patented technology

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 network fabric of a tenant, 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 DNS entry that resolves the application name to its virtual IP address and destination NAT 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.

The invention relates to a data processing method and device, routing equipment, a storage medium and a program product. The method comprises the steps that a calculation task sent by a client side is acquired, and the calculation task carries a data packet of a target service identifier; when it is determined that a first forwarding path corresponding to the target service identifier exists according to the recorded relationship between the service identifier and the forwarding path, sending the data packet to a data center according to the first forwarding path; and under the condition of determining that the target service identifier does not have a corresponding target forwarding path according to the recorded relationship between the service identifier and the forwarding path, determining a second forwarding path based on an anycast mechanism, and sending the data packet to a data center according to the second forwarding path. By adopting the method, efficient forwarding can be ensured for the calculation task of the calculation-intensive application, the correctness and integrity of information transmission are ensured, and the reliability and stability of information transmission are improved.

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 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.

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 provides a computing power sensing method and system for a router, a gateway, an IPC and an ONU, and belongs to the technical field of computing power sensing. The method comprises the steps that S1, networking is carried out after a computing power node is started; s2, each computing power node detects network resources, computes computing resources of the node and further creates a service state information table; s3, each computing power node performs computing power evaluation on the computing power request based on the service state information table of the node to generate a computing power evaluation result; step S4, based on the network bandwidth, the network rate, the data flow viscosity and the dynamic anycast availability, calculating the scheduling priority of the other computing power nodes, and forwarding the computing power request based on the scheduling priority and the computing power evaluation result; and S5, the computing power node receives the forwarded computing power request through the computing power entry, calls the computing power service based on the computing power request, and outputs an execution result through the computing power exit. The method has the advantages that the load balancing capacity and expansibility of the computing power node are greatly improved.

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.

The present application provides a method, apparatus, computing device, and storage medium for sending a response message, and belongs to the technical field of network communication technology. The method includes: a network device receives a response message sent by a DHCP service device, where the destination address of the response message is the first IP address of a relay device, and the relay device has established a communication connection with a client. The network device determines a first next-hop address among multiple next-hop addresses corresponding to the destination IP address of the response message, where the first next-hop address is the first tunnel endpoint IP address of the relay device and is different from the tunnel endpoint IP addresses of other relay devices in the target anycast group to which the relay device belongs, and each relay device in the target anycast group has established a communication connection with the client. The network device can forward the response message to the relay device according to the first next-hop address. By adopting the present application, the detour situation of the response message can be reduced.

In examples, a first Anycast advertisement is received from a first server identifying the first server as a primary address for a service. In addition, a second Anycast advertisement is received from the first server identifying the first server as a secondary address for the service. Further, a third Anycast advertisement is received from a second server identifying the second server as the secondary address for the service. A first community advertisement is also from the first server identifying the first server as a member of a first community. Thereafter, a first request is received from a client including the primary address, and the request is routed to the first server. When a second request from the client is received including the secondary address, based at least on the community advertisement, the first server is ignored, and the second request is routed to the second server.

An autonomous system border router (ASBR) provided in a domain in which routers share an anycast address, may perform a method comprising: (a) receiving, from an exterior Border Gateway Protocol (eBGP) peer, first reachability information for a first prefix, the first reachability information including a first next hop (NH) address; (b) communicating first link state information about the first prefix to another router in the domain, the first link state information associating the first prefix with the anycast address; (c) receiving, from an eBGP peer, second reachability information for a second prefix, the second reachability information including a second next hop (NH) address; and (d) communicating second link state information about the second prefix to the other router in the domain, the second link state information associating the second prefix with the anycast address. This effectively reduces the number of next hops related to a prefix learned by two or more ASBRs (e.g., one or more spine routers in a Clos of an aggregate spine) via eBGP, stored as forwarding information on a non-ASBR in an IGP domain (e.g., on a leaf node in a Clos of an aggregate spine).

The embodiment of the invention provides a message processing method and a related device, and the method comprises the steps: carrying out the copying and forwarding of a first anycast message after the network equipment receives the first anycast message. A first serial number is carried in a first original message corresponding to the first anycast message, the first serial number corresponds to the first controller, and a destination address of the first anycast message points to the first controller. And copying the first anycast message to obtain a first copied message, the first copied message carrying a second serial number, the second serial number corresponding to the second controller, and the second controller being an attribution determined according to semantics of the first anycast message. The first serial number carried by the first original message is the same as the second serial number carried by the first copy message. The first serial number increases progressively as the network device sends the first original message, the second serial number increases progressively as the network device sends the first copy message, and the increasing amount of the first serial number is the same as the increasing amount of the second serial number.

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.

The invention provides a computing power network service anycast method and system. The method comprises the steps that a gateway forwards a service request to a controller; the controller calculates the transmission cost and the propagation cost from the gateway to each cloud node and each edge node based on the transmission distance and the bandwidth between the gateway and the cloud nodes and the edge nodes, and calculates a network transmission cost matrix based on the transmission cost and the propagation cost; calculating an arrival rate matrix based on the forwarding probability weights of the gateway, the cloud node and the edge node; calculating a target anycast forwarding weight strategy matrix based on the arrival rate matrix and the network transmission cost matrix by adopting a Sinkhorn algorithm, wherein the target anycast forwarding weight strategy matrix comprises weight values of each cloud node and each edge node; and determining the number of positions of the cloud nodes and the edge nodes in a queue based on the weight values of the cloud nodes and the edge nodes, constructing the queue, and issuing a processing task corresponding to the service request to the corresponding cloud nodes or the edge nodes based on the queue.

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.

In examples, a first Anycast advertisement is received from a first server identifying the first server as a primary address for a service. In addition, a second Anycast advertisement is received from the first server identifying the first server as a secondary address for the service. Further, a third Anycast advertisement is received from a second server identifying the second server as the secondary address for the service. A first community advertisement is also from the first server identifying the first server as a member of a first community. Thereafter, a first request is received from a client including the primary address, and the request is routed to the first server. When a second request from the client is received including the secondary address, based at least on the community advertisement, the first server is ignored, and the second request is routed to the second server.

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.

A map of IP addresses of a distributed cloud computing network to one or more groupings is stored. The IP addresses are anycast IP addresses for which compute servers of the distributed cloud computing network share. These IP addresses are to be used as source IP addresses when transmitting traffic to destinations external to the cloud computing network. The map is made available to external destinations. Traffic is received at the distributed cloud computing network that is destined to an external destination. An IP address is selected based on the characteristic(s) applicable for the traffic and the map. The distributed cloud computing network transmits the traffic to the external destination using the selected IP address.

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.

Disclosed are a client device, a routing device and a server device for re-establishing an anycast communication session with a service function (SF) and corresponding methods of operating the same. The client device comprises a processor, being configured to: obtain a trigger for the re-establishing of the anycast communication session; send a calibration request message (CREQ) to a routing device being adjacent to the client device; and receive a calibration response message (CRES) from the routing device. The CREQ comprises the identifier (SID) of the SF, a locator address (IPC) of the client device, and a locator address (IPS) of a particular server device of the SF currently serving the client device. The CRES comprises the SID of the SF, the IPC, and a locator address (IPS′) of a specific server device of the SF prospectively serving the client device.

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.

A content delivery system for delivering an audio and / or video content to a mobile terminal is deployed on top of a mobile network and includes plural edge cache servers arranged using a star or hierarchical topology. The edge cache servers are connected to respective aggregation nodes of the mobile network such that a configurable breakout function of the nodes enables routing thereto packets addressed to an anycast addressing associated with the servers. When receiving a request, from the mobile terminal, for obtaining a manifest file of the audio and / or video content, an edge cache controller of the content delivery system creates a session identifier including a unicast addressing part pointing to the controller, and redirects the mobile terminal to the anycast addressing of the servers. The servers then obtain the session identifier from the mobile terminal and use the unicast addressing contained therein to receive context information from the controller.

The present invention relates to the field of IP positioning technology, and discloses a multi-target anycast IP positioning method. The method comprises: determining the anycast IP address to be positioned and the total number of detection resources; generating an ordered probe set; allocating the same number of detection resources to each anycast IP address, and selecting a corresponding number of probes for detection, obtaining an RTT value, and obtaining a coordinate pair set through a positioning algorithm; fitting a utility curve according to the coordinate pair set, and calculating the corresponding gradient function and the utility gradient value of the gradient function under the number of allocated detection resources in the previous round; allocating the remaining resources to be allocated based on the utility gradient value to obtain an allocation plan; and locating the anycast IP address based on the allocation plan. The method can dynamically allocate detection resources in batches, and realize the positioning of multiple anycast IP addresses based on the positioning algorithm, consume less detection resources, and have a high detection resource utilization rate and anycast IP positioning efficiency, and a low detection cost and time consumption.