A system for providing media services on behalf of a customer contact center includes: a processor; and a memory, wherein the memory has stored thereon instructions that, when executed by the processor, cause the processor to: transmit and receive signaling messages to and from a control server over an established data network connection; in response to the signaling messages, invoke a media device for transmitting media to an end-user device; detect loss of the data network connection; identify a configurable parameter for determining whether a failed message transmission should be retried; and in response to determining that the failed message transmission should be retried, re-transmitting the failed message to the control server.

Described is an approach that provides an adaptive solution to missing data for machine learning systems. A gradient solution is provided that is attentive to imputation needs at each of several missingness levels. This multilevel approach treats data missingness at any of multiple severity levels while utilizing, as much as possible, the actual observed data.

Method, management node and processing node are disclosed for continuous availability in a cloud environment. According to an embodiment, the cloud environment comprises a plurality of layers and each layer includes at least two processing nodes. Each processing node in a layer can pull job(s) from the processing nodes in the upper layer if any and prepare job(s) for the processing nodes in the under layer if any. A method implemented at a management node comprises receiving measurement reports from the plurality of layers. The measurement report of each processing node comprises information about job(s) pulled from the upper layer if any and job(s) pulled by the under layer if any. The method further comprises determining information about failure in the cloud environment based on the measurement reports.

A method for expanding a high-availability server cluster is disclosed. The method includes configuring at least two nodes comprised in a server cluster to be expanded as one or more server units, each server unit consisting of at least two nodes; configuring a newly added node into the server cluster, and configuring the newly added node as at least one newly added server unit in the server cluster; and broadcasting routing information of the newly added server unit. The method realizes an expansion of a server cluster by adding a newly added server unit to the server cluster, i.e., increasing the number of server units in the server cluster, so that the number of sessions and processing performance of the expanded server cluster can be improved, with a relatively low expansion cost.

Methods, systems, and storage media for telemetry adaptation are disclosed herein. In an embodiment, a networking device may include a data collector agent module to receive measurement data from measurement sources according to an initial telemetry policy and to provide the measurement data to the one or more servers of the monitoring system. The networking device may include an anomaly detection module to receive measurement data from the data collector agent module, to detect an anomaly in the measurement data, and to provide an indication of the anomaly to the data collector agent module for the data collector agent module to provide a first modified telemetry policy for the measurement sources.

Methods, systems, and storage media for telemetry adaptation are disclosed herein. In an embodiment, a networking device may include a data collector agent module to receive measurement data from measurement sources according to an initial telemetry policy and to provide the measurement data to the one or more servers of the monitoring system. The networking device may include an anomaly detection module to receive measurement data from the data collector agent module, to detect an anomaly in the measurement data, and to provide an indication of the anomaly to the data collector agent module for the data collector agent module to provide a first modified telemetry policy for the measurement sources.

A virtual machine fault tolerance method, including receiving a network request, and separately sending the network request to a primary virtual machine and a secondary virtual machine, receiving a network response data packet, where the network response data packet is a primary-end data packet transmitted by the primary virtual machine or a secondary-end data packet transmitted by the secondary virtual machine, comparing data of the received network response data packet with the peer-end data according to data byte order when peer-end data is stored, and generating and sending a newly created data packet to the client when the compared data is the same, where the newly created data packet includes the compared data. Hence, network performance and computing performance of the primary virtual machine can be improved without modifying network protocol stacks of the primary virtual machine and the secondary virtual machine.

Techniques are described for providing an indication of an impending control plane disruption of a router using forwarding plane liveliness detection protocols. A forwarding plane of the router outputs liveliness detection messages that, when received by a peer router, provide an indication that the forwarding plane is operational and able to forward packets. When constructing the liveliness detection messages, the forwarding plane may embed additional information indicative of any impending disruption in the control plane of the network device. In this way, the forwarding plane of the transmitting router provides an indication to the peer router that, although currently operational, the control plane of the router may in the near term become non-operational. The peer router, in response to receiving an enhanced liveliness detection message indicating an impending control plane disruption, suppresses a recovery action otherwise triggered by a loss of communication with a control plane of the network device.

Examples of the present disclosure describe a testing framework for adaptive virtual services. In an example, a function vendor provides a network function having stated specifications to a service provider. A derived signature is generated for the network function (e.g., based on associated metadata, an image associated with the network function, and/or a network signature for the network function), which is used to classify the network function. The testing framework is used to test the network function according to its classification, thereby determining a set of capabilities. In examples, a network function having the same or similar signature as a previously tested network function may be categorized according to the previously tested network function. The network function is categorized according to its determined capabilities and added to an inventory of network functions for the service provider. Network functions in the inventory can then be selected to form a computer network.

A method and system for automatic redirection of control channel messages in response to a control channel failure with a target switch in a software defined networking (SDN) network, the automatic redirection occurring before a topology of the SDN network is updated in response to the control channel failure. The method includes determining whether a control channel message is to be sent to an SDN controller, checking availability of the control channel, selecting a backup port to reach the SDN controller in response to the control channel being unavailable, and forwarding the control channel message to the SDN controller via the backup port.