Embodiments of the present invention relate to an approach for reconfiguring interrelationships between components of virtual computing networks (e.g., a grid computing network, a local area network (LAN), a cloud computing network, etc.). In a typical embodiment, a set of information pertaining to a set of components associated with a virtual computing network is received in a computer memory medium or the like. Based on the set of information, a graphical representation (e.g., hierarchical tree) depicting the set of interrelationships between the set of components is generated. When a failure in the virtual computing network is detected, at least one of the set of interrelationships between the set of components is reconfigured based on the graphical representation and the set of rules to address the failure.

An example involves assigning a first logical circuit identifier to a logical failover circuit prior to a failure of a dedicated logical circuit. The dedicated logical circuit includes first variable communication paths to route data through a first local access and transport area (LATA), second variable communication paths to route the data through a second LATA, and fixed communication paths to route the data between the first LATA, the second LATA, and an inter-exchange carrier. The failure of the dedicated logical circuit is identified based on status information pertinent to the dedicated logical circuit. The logical failover circuit includes an alternate communication path for communicating the data. When the first logical circuit identifier does not match the second logical circuit identifier, the second logical circuit identifier is renamed to match the first logical circuit identifier. The data is rerouted to the logical failover circuit without manual intervention.

A redundant storage device includes a first port, a second port different from the first port, a first storage device connected to the first port, and a second storage device connected to the second port. The first storage device changes an operation mode of the second storage device from a standby mode to an active mode using an internal communication.

An information processing apparatus includes a plurality of devices, each including a memory that stores link-status information indicating whether or not an error occurs in a link connected to the each device. When a first device among the plurality of devices fails to receive within a predetermined time period a response for a request that has been transmitted by the first device, the first device obtains the link-status information from relevant devices each related to at least one of transfer of the request and transfer of the response, and identifies a link in which the error has occurred or a device that is connected to the link, based on the obtained link-status information.

According to one aspect of the present invention there is provided a system, method, and computer program product for recovering from a network failure in a communication network using network function virtualization (NFV-based network), the method including: selecting a first network component of the NFV-based network, detecting at least one probable failure of the first network component, identifying at least one virtual network function (VNF) instance using the first network component, selecting a second network component to be used by same VNF for replacing the VNF instance in the first network component when the first network component is faulty, and securing at least one resource of the second network component for the VNF.

Systems and techniques are described for a path maximum transmission unit (MTU) discovery method that allows the sender of IP packets to discover the MTU of packets that it is sending over a conduit to a given destination. The MTU is the largest packet that can be sent through the network along a path without requiring fragmentation. The path MTU discovery method actively probes each sending path of each conduit with fragmentation enabled to determine a current MTU and accordingly increase or decrease the conduit MTU. The path MTU discovery process is resilient to errors and supports retransmission if packets are lost in the discovery process. The path MTU discovery process is dynamically adjusted at a periodic rate to adjust to varying network conditions.

Method/system is disclosed for recovering computing capacity and critical applications after a catastrophic failure. The method/system involves distributing the computing capacity over multiple computing clusters, each computing cluster having concurrent access to shared data and software applications of other computing clusters. Sufficient backup computing capacity is reserved on each computing cluster to recover some or all active computing capacity on the other computing clusters. Message traffic throughout the computing clusters is monitored for indications of a catastrophic failure. Upon confirmation of a catastrophic failure at one computing cluster, the workloads of that computing cluster are transferred to the backup computing capacity of the other computing clusters. Software applications that have been designated for recovery are then brought up on the backup computing capacity of the other computing clusters. Such an arrangement allows computing capacity and critical software applications to be quickly recovered after a catastrophic failure.

Systems and techniques for capturing audio and delivering the audio in digital streaming media formats are disclosed. Several aspects of the systems and techniques operate in a cloud computing environment where computational power is allocated, utilized, and paid for entirely on demand. The systems and techniques enable a call to be made directly from a virtual machine out to a Public Switch Telephone Network (PSTN) via a common Session Interface Protocol (SIP) to PSTN Breakout service, and the audio to be delivered onward to one or more Content Delivery Network (CDN). An audio call capture interface is also provided to initiate and manage the digital streaming media formats.

A communication system for sub-devices from a first sub-device to an n.sup.th sub-device, which are connected to a main device through a communication line, includes a switch provided at each of both ends of the main device and the plurality of sub-devices to open and close the communication line, a termination resistor and a termination switch provided at each of both ends of the main device and the sub-devices to form one termination end of the communication line when the switch is opened, a first communication line sequentially connecting the main device to each of the sub-devices from the first sub-device to the n.sup.th sub-device, a second communication line directly connecting one end of the main device to one end of the n.sup.th sub-device, and a processor electrically connected to the switch and the termination switch to control opening/closing operations of the switch and the termination switch.

The embodiments of the disclosure provide a method for managing data drop rate, a client device, and a computer readable storage medium. The method includes: determining, by the client device, a first data component corresponding to a t-th time point and a second data component, wherein the first data component belongs to a first data type, and the second data component belongs to the first data type or a second data type; sending, by the client device, a first data packet to a host at the t-th time point, wherein the first data packet comprises a first payload having a fixed size, and the first payload comprises the first data component and the second data component.