A method of automatically detecting the service level agreement settings in an Ethernet virtual circuit (EVC) carrying user packets comprises generating synthetic packets different from the user packets, on a data path in the EVC at a level sufficiently high to saturate the EVC. This accelerates the detection of actual effective values for the Committed Information Rate (CIR) and the Excess Information Rate (EIR) by triggering traffic shaping devices in the data path to enforce the CIR and EIR settings configured for those devices. A plurality of traffic samples are collected from the data path during a sampling period that is long enough to allow the collection of at least two valid traffic samples, where a valid traffic sample is the amount of user packets measured between two consecutive losses of synthetic packets. The CIR and EIR values enforced by the traffic shaping devices are determined from the collected samples.

Methods and apparatus for use in well construction, including a communications network having processing systems and a common data bus. At least one processing system implements subsystem virtual networks in the communications network. Each subsystem virtual network communicatively couples together equipment controllers of equipment of a respective control subsystem. At least one processing system implements a configuration manager that translates communications from the subsystem virtual networks to a common protocol, and makes data of the communications accessible through the common data bus. At least some equipment controllers access data from the common data bus through respective subsystem virtual networks. At least one processing system implements a process application that accesses data from the common data bus. At least one processing system implements a human-machine interface that accesses data from the common data bus. At least one processing system implements a coordinated controller that issues command to the equipment controllers.

Embodiments of the present invention provide a data processing method and apparatus, including: receiving X data streams through X physical lanes of an Ethernet interface, converting the X data streams into M data streams transmitted on M virtual lanes, and performing bandwidth adjustment on each data stream of the M data streams to obtain M first data streams; receiving Y data streams through Y physical lanes of the Ethernet interface, converting the Y data streams into N data streams transmitted on N virtual lanes, and performing bandwidth adjustment on each data stream of the N data streams to obtain N second data streams. In addition, a corresponding apparatus is further provided. By using the foregoing technical solution, received data streams of different sources and different frequencies can be processed.