176 results about "Anycast" patented technology

A distributed network-attached storage network provides content distribution using conventional file transfer protocols such as NFS and CIFS. A filer proxy accepts a client request and translates the client request to a file transfer protocol accepted at the file system having the file requested in the client request. The filer proxy generates a file handle for the file containing redundant filer proxy information to be used for failover to a backup filer proxy in the event of a network error or failure of an original filer proxy. The file handle also contains information for network security purposes such as detection of forged file handles.

A distributed data center topology having at least a pair of active data centers that can recover from a disaster at one of the data centers and achieves load balancing using IGP (Interior Gateway Protocol) between data centers. The distributed data centers use virtual IP addresses, route health injection and Border Gateway Protocol (BGP) for business continuance, disaster recovery and load balancing. The active / active topology supports load balancing where each site concurrently hosts active applications or applications can be hosted in a logical active / standby mode. IGP and RHI (Route Health Injection) are used to propagate routes to an edge router and BGP (Border Gateway Protocol) and IP Anycast are used for site-to-site recovery and load balancing between data center sites.

Some embodiments implement systems and methods to monitor CDN performance from the end user's perspective. To achieve full end-to-end monitoring, the systems and methods monitor the performance of Anycast routing for routing an end user to the optimal PoP of the CDN and monitor the performance of different routes that deliver content from the optimally selected PoP back to the end user. Systems and methods are also provided to leverage the monitored performance in order to automatically optimize the performance of the CDN by optimizing or modifying Anycast routing and by performing route grooming as needed to ensure that the optimal route is selected to deliver content to different sets of end users that request content from a particular PoP.

The invention provides for conversion of latitude and longitude to an addressing scheme that supports current TCP / IP (Ipv4) and future addressing (Ipv6 / Ipng) requirements. More specifically, it allows a decentralization of the unicast point to a device on the hosted network. Geographical Internet Protocol (geoIP) addressing will facilitate anycast routing schemes in which the nearest node has a statically assigned geoIP. Geo-routing and network management become a function of the geoIP address.

Managing TCP anycast requests at content delivery network nodes is disclosed. In some embodiments, managing traffic includes receiving a request at a first node of a content delivery network, determining at the first node that the request should be serviced by a second node of the content delivery network, and redirecting the request to the second node, wherein the first node and the second node of the content delivery network comprise endpoints for serving content and wherein the content delivery network is at least in part an anycast network.

Embodiment of the present invention provides a method according to any multicast service registration method and apparatus, and system for switching equipment, communications, involving registration method comprising: receiving a service registration request, the service name of the service registration request, the network including access requirements, and the service provider unicast address, the network access requirements for describing the services provided by the network server and the data transmission requirements; determining the service providing terminal sections provide a corresponding network, the network slice including the current network service provider for each switch to the side of the unicast address path, the path of the network to meet the access needs; determining anycast anycast address and the domain name services to establish that the controller said anycast addresses with the corresponding relationship between the network slicing complete service registration. The present invention can reduce costs anycast technology applications.

Some embodiments provide a method for providing redundancy and fast convergence for modules operating in a network. The method configures modules to use a same anycast inner IP address, anycast MAC address, and to associate with a same anycast VTEP IP address. In some embodiments, the modules are operating in an active-active mode and all nodes running modules advertise the anycast VTEP IP addresses with equal local preference. In some embodiments, modules are operating in active-standby mode and the node running the active module advertises the anycast VTEP IP address with higher local preference.

A distributed caching and redistribution system, method, and mobile client for caching and redistributing data content in a wireless data network. The system enables mobile clients to cache data content that has been distributed by means of broadcast or multicast, and to redistribute the content from the cache to other users. Using anycast techniques applied to the PLMN, a user who wants to retrieve data that was distributed earlier locates the nearest user that has the content available, and asks the nearest user to forward the content. The “nearest” user may be the closest user, but may also be the optimal user from a Quality of Service (QoS) point of view.

A request for an information object at an address identified by a uniform resource locator (URL) is received; and the URL is mapped to a corresponding unicast address for the information object. Thereafter, the unicast address for the information object may be used as an anycast address.

A method and system for automatically interconnecting IPv4 networks across an IPv6 network are disclosed. The method includes receiving an IPv4 packet at an ingress router in the IPv6 network and finding the longest match IPv4 routing entry for IPv4 addresses in the received packet to identify an egress router in the IPv6 network. The IPv4 packet is encapsulated to create an IPv6 packet, wherein destination and source addresses of the encapsulated packet identify a subnet router anycast corresponding to the ingress router and the egress router in the IPv6 network. The encapsulated packet is forwarded to the egress router.

A protocol associated with an Internet protocol version six (IPv6) network address included within a network packet provides both unicast and anycast addressing, while having the same bit locations and bit functions associated with a top-level aggregation identifier, a next-level aggregation identifier, and a site-level aggregation identifier. A prefix associated with the three most significant bits of the network address identifies the network address as being a unicast address, an anycast address, or both a unicast and an anycast address. The prefix that identifies the network address as being both a unicast and an anycast address allows routers to have smaller routing tables.

Disclosed is a SIP client having a session initiation protocol module. A router that is capable of communicating with the SIP client, the router having a closest anycast IP server module. A SIP proxy server having an anycast address and a unicast address replacement module, the unicast address replacement module capable of replacing the anycast IP address of a received IP packet, that includes a session initiation protocol request message, with a unicast IP address of the SIP proxy server.

The invention relates to a domain name management system, a domain name management method and a domain name analysis method based on a block chain. The domain name management system based on the blockchain comprises a block chain of a hierarchical structure, the block chain of the hierarchical structure comprises a root chain and a plurality of top level domain name chains; the root chain and thetop level domain name chains are alliance chains; and the root chain manages and stores the information of all top level domain name chains, and each top level domain name chain manages and stores the information of the same top level domain name. The domain name management system based on the block chain realizes the decentration management of the domain names, eliminates the number limitation of the root server, and enables different organizations to impartially share the domain name management authority; and on the synchronous mode, each node can be synchronized at any time, thereby changing the problem that the original anycast mode has a synchronization sequence. The problem of domain name hijacking can also be solved by managing and updating an analysis database by using the block chain.

For a managed network implementing at least one logical router having centralized and distributed components, some embodiments provide a method that better supports the provision of certain network applications and / or services. The method receives at a host implementing (1) a distributed logical router and (2) a plurality of logical switches of a logical network along with other hosts, a message from a first data compute node (DCN) executing on the host. The host logically forwards the message to the distributed logical router that uses a particular anycast internet protocol (IP) address using a first media access control (MAC) address. The distributed router determines that the message requires processing by a centralized logical router (e.g., a service router, edge node, etc.) executing on an edge node host and forwards the message to the centralized logical router using the same anycast IP address and a second, unique MAC address.

Various methods and systems for performing data-driven route advertisement are disclosed. One method involves inhibiting advertisement of a route that is associated with a data source. Advertisement of the route is then allowed in response to detecting data sent by the data source. For example, advertisement of the route can be allowed in response to detecting that the data source is sending data at a rate that exceeds a user-specified data rate. The data source can be a multicast source that is identified by an anycast address.

Conventional anycast networks provide a service which allows a sender to access the nearest of a group of receivers sharing a common anycast address. In contrast thereto, multicast networks establish data communications between a sender and all receivers confined by a group having the same multicast address. Thus, the networks providing both anycast and multicast routing only allow for accesses by a sender to one receiver being specified according to the employed anycast protocol or to a plurality of receivers forming a multicast group. In order to provide accesses by a sender to a specified number of nearest receivers, the present invention provides a method and a system for multiple hosts anycast routing in a network. An indicator specifying the number of nearest receivers to be set up for data communications with a sender is included in an anycast address or associated thereto as an extension. On the basis of the indicator, a corresponding number of anycast members of an anycast group identified by the anycast address are contacted / allocated for data communications with the sender.

An information handling system is provided. The information handling system includes systems and methods for providing an anycast MAC addressing of a virtual redundancy router protocol instance that spans a plurality of aggregation switches. The anycast MAC address may be provided by a virtual bridging device and then used as an address of a virtual IP instance accessible through the virtual bridging device. Using the anycast MAC address with the virtual IP instance, a packet to be routed from one rack to another rack in a data center may be dynamically routed based a current load distribution.

An information object repository is configured to resolve a network layer anycast address to a network layer unicast address in response to a request for an information object at the network layer anycast address. The information object repository may be further configured to resolve the network layer anycast address by transmitting a request for the network layer unicast address and awaiting a response thereto, and, in some cases, to return a failure message to a source of the request for the information object if the response to the request for the network layer unicast address is not received within a timeout period. Preferably, the request for the network layer unicast address is a single IP packet that includes the network layer anycast address. Similarly, the request for the network layer unicast address is preferably a single IP packet that includes the network layer unicast address. The response to the request for the network layer unicast address may be returned by a host having the network layer unicast address, or another network node configured to do so.

An anycast routing method and apparatus for supporting a consecutive service flow are provided. In the any cast routing method, an anycast service is requested to at least one of the servers, and a packet including a destination option header with an anycast address is received as a response for the anycast service request from at least one of the servers. Then, the anycast address is stored in an anycast cache. The packet is transmitted through an anycast routing operation using the anycast address stored in the anycast cache if data to transmit to the service flow of at least one of the servers is received from an application.

Some embodiments implement systems and methods to monitor CDN performance from the end user's perspective. To achieve full end-to-end monitoring, the systems and methods monitor the performance of Anycast routing for routing an end user to the optimal PoP of the CDN and monitor the performance of different routes that deliver content from the optimally selected PoP back to the end user. Systems and methods are also provided to leverage the monitored performance in order to automatically optimize the performance of the CDN by optimizing or modifying Anycast routing and by performing route grooming as needed to ensure that the optimal route is selected to deliver content to different sets of end users that request content from a particular PoP.

A specific address of a server in a data communication network is found when using anycast addressing defined for available servers that provide a predetermined service by providing a first server having a memory and a processor coupled to the memory, sending a request from a client to use the first server for the predetermined service by the anycast address of the service, receiving the request at the first server and detecting that the request was addressed using an anycast address, and sending a response to the client, instructing the client to use an alternative server and providing a specific address of the alternative server to the client, instead of providing the requested predetermined service by the first server in response to the request.

An information handling system is provided. The information handling system includes systems and methods for providing an anycast MAC addressing capability to a network. The anycast MAC address may be provided by creating and using virtual routing bridges, which in the network topology appear in front of service-providing nodes associated with the anycast MAC address. The physical routing bridges that neighbor the virtual routing bridge in the network are configured so as to provide the routing bridge functions to the virtual routing bridge, including propagating network topology information representing the virtual routing bridge to the rest of the network.

The invention discloses a DTN network Anycast routing method based on opportunity communication, which belongs to the field of wireless communication. The method of the invention is: 1) the sending utility value u of each target group node is maintained by each node; 2) the maximum sending utility value u and the density perception measure rho of a node j meeting with a node i is obtained by the node i; 3) if the maximum sending utility value u of i is bigger than the setting threshold u, the size of u and u is compared; if u is smaller than u, the information is transmitted to j, otherwise, no transmission is carried out; 4) if u is not bigger than u, compare the density perception measure rho of i and compare rho and rho; if rho is less than rho, the information is transmitted by the node i to the node j, otherwise, no forwarding. Compared with current technology, the invention has the advantages of improving the success delivery rate of the network data, reducing the transmission delay of the data, and possibility of producing circle during the forwarding, and improving the approaching speed of information to the target node.

The invention discloses a method for realizing an Anycast-RP mechanism. The method comprises that a multicast source sends a multicast stream to an SDR; the SDR sends a packaged registration message to an RP; the RP is added with an SPT in the multicast source direction and establishes the SPT from the multicast source to a multicast receiver; the RPT is switched to the SPT and the SDR sends the multicast stream to a UDR by the SPT. The invention also discloses a system for realizing the Anycast-RP mechanism. According to the technical scheme of the invention, the Anycast-RP mechanism is simply realized.

Systems and methods are described that instruct routers having constrained hardware / memory to redirect all outbound traffic to a helper router. The helper router contains a full routing table that can forward any packet to its destination. In a large service provider network, helper routers may be distributed at multiple locations across the network. Since packets must detour through the helper router, the distributed helper routers minimize latency.

The invention discloses a method for realizing load balancing. The method comprises the steps that load balancing equipment collocates an unified anycast address to be as an objective IP (internet protocol) address of service request message for each service server according to anycast address request message sent to the load balancing equipment by each service server in a server group, and records the MAC (media access control) address of each service server; and the load balancing equipment determines one service server in the server group to be as an objective server according to the principle of load balancing when receiving the service request message from a client side, and transmits the service request message to the objective service server according to the objective IP address and the MAC of the objective service server. The invention also discloses the load balancing equipment and a system for realizing load balancing. By adopting the method, the frequency of network address conversion of the load balancing equipment is reduced.