The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for determining a to-be-uploaded NSD, so as to resolve a technical problem of a relatively low network service generation efficiency. In embodiments of the present invention, multiple NSDs are pre-stored, and when an NSD needs to be uploaded, it is only required to select an appropriate NSD from the stored NSDs for uploading; and when there is a service requirement, an NSD does not need to be generated before being uploaded. Therefore, a time required for uploading an NSD is reduced, and network service generation efficiency is improved.

Embodiments of the present invention provide an access network system, and a data packet processing method and apparatus. The system includes: a controller, configured to perform configuration a flow table for a switching module and a protocol function for at least one functional module; the switching module, configured to send a first data packet to a first functional module of the at least one functional module according to the flow table configured by the controller, where the first functional module is a functional module first indicated in the flow table to process the first data packet; and the at least one functional module, configured to process the first data packet according to the protocol function configured by the controller.

A service request processing method, a related apparatus, and a system are provided. In the service request processing method provided in embodiments of the present invention, after receiving a service request reported by a network element, a load balancer first determines whether status information of a data node that corresponds to the service request indicates that the data node is available; and rejects, if the status information indicates that the data node is unavailable, to deliver the service request to an application node.

A controller network device receives command input for providing services over a service provider network and receives a verification request to verify an initial output of a control communication sent to a forwarding network device by a second controller network device in a group of peer controller network devices. The controller network device receives, from other controller network devices in the group of peer controller network devices, results that are responsive to the verification request and based on the command input and identifies a majority output from the results. The controller network device compares the initial output from the second controller network device to the majority output to determine that the initial output failed a verification vote and determines when a threshold number of control communications from the second controller network device, including the initial output, have failed verification votes.

An example method of detecting device malfunctions at a subject device includes: obtaining a device event indicator representing an event detected at a device sensor of the subject device; obtaining an external event indicator representing an external event detected by an environmental sensor, the external event occurring external to the subject device; and identifying a device malfunction at the subject device based on the device event indicator and the external event indicator.

A method for applying a plurality of vehicles each including an onboard server and at least two apparatuses, an onboard server and each of the apparatuses storing initial data, each onboard server being connected to the apparatuses mounted in the same vehicle with a local network. The method includes the steps of transferring modified data, through an extended radiofrequency communication network, from a server on the ground towards the onboard servers, when the modified data have been stored in memory in each onboard server, emitting via the extended network, an updating command, and transmitting modified data to at least one apparatus through the corresponding local network, the modified data replacing, in said apparatus, the initial data.

A kind of transmission method based on the learnable power model, which conducts periodic record for the historical change trend of the network. This method conducts weighting smooth processing on the round trip time and judges the changing trend of congestion control window. Then, it establishes model for the relationship between network power and the congestion control widow. When a new ACK is received, it immediately updates the window of power model. Finally, it forecasts the size of the congestion control window of the next time period by combining the congestion window and the network power changing trend. For the network packet loss or time-out events, the retransmission mechanism of traditional TCP is used, and when the packet loss ends, the power model process is used again. This invention reduces the influence of the network random events of the estimation error of traditional algorithm.

Systems, methods, and computer-readable media provide for collection of statistics relating to network traffic between virtual machines (VMs) in a network. In an example embodiment, a virtual switch hosted on a physical server provides network address information of VMs deployed on the physical server to a virtual switch controller. The controller collects this network address information from each virtual switch under its control, and distributes the aggregate address information to each switch. In this manner, the controller and each switch within the controller's domain can learn the network address information of each VM deployed on physical servers hosting switches under the controller's control. Each virtual switch can determine a classification of a frame passing through the switch (e.g., intra-server, inter-server and intra-domain, or inter-domain traffic), and statistics relating to the traffic. In an example embodiment, the virtual switch controller can collect the statistics from each switch within its domain.

A method includes obtaining first information associated with control of multiple computing devices, where the first information relates to possible changes to processing tasks performed by the computing devices. The method also includes obtaining second information associated with building infrastructure operations performed by one or more building systems of one or more buildings that house the computing devices. The method further includes identifying one or more changes to one or more of the computing devices using the first and second information. In addition, the method includes outputting third information identifying the one or more changes.

The disclosure relates to a method for configuring an WLAN (Wireless Local Area Network) access point adapted to use at least one operational frequency channel to transmit or receive data when the access point is in an operational mode. The configuring includes checking an availability of at least one restricted frequency channel, a use of the restricted frequency channel being restricted by the availability, choosing the operational frequency channel from a set of frequency channels according to the checked availability, a first configuring comprising a first checking of restricted frequency channels belonging to a first proper sub-set of the set being performed before entering into the operational mode. At least one second checking of at least one restricted frequency channel of the set, that has not been checked as available, is performed after the first configuring.