According to one embodiment, a ring network includes a plurality of communication devices. Each of the plurality of communication devices has first and second Ethernet interfaces respectively connected to adjacent communication devices on one side and on the other side in the ring, and a host device that can transmit and receive data to and from other communication devices on the ring network using the first and second Ethernet interfaces. The plurality of communication devices includes a first communication device that transmits, in a first time period, a first frame from its second Ethernet interface in a clockwise direction and transmits a second frame from its first Ethernet interface in a counterclockwise direction.

Multiple nodes (2) of a ring network communication system (1) include a heteronomous node (22) and an autonomous node (23). The heteronomous node (22) operates in a heteronomous mode in which data generated by a data generation part (8) of an own node is transmitted as transmitted data Dt only when received data Dir received by a data reception part (13) includes a data transmission request. The autonomous node (23) operates in an autonomous mode in which the data generated by the data generation part (8) of the own node is transmitted as the transmitted data Dt regardless of reception of the received data Dir including the data transmission request. Data including the data transmission request is not required for the autonomous node, and the control period is shortened.

A system and method of identifying faulted devices in an Ethernet network of a building management system (BMS). The system includes a network manager device, a first client device, and a second client device. A first port of the first client device is connected to a first port of the network manager device, a first port of the second client device is connected to a second port of the first client device and a second port of the second client device is connected to a second port of the network manager device. A third port of the first client device is connected to a port of a device external to a ring of the network. The network manager device is configured to transmit a frame having a count field. The first client device is configured to increment the count field once based on a successful transmission of the frame to the second client device and increment the count field twice based on a failed transmission to the second client device.

A network-on-chip and a corresponding method are provided. The network-on-chip includes at least one bufferless ring network in at least one dimension of the network-on-chip. At least one bufferless ring network includes multiple routing nodes, and at least one of the multiple routing nodes is a switching node. Two bufferless ring networks in different dimensions may intersect. The two bufferless ring networks exchange data by using switching nodes. A dedicated slot and a public slot are configured in each bufferless ring network. Only one switching node has permission to use a dedicated slot at a same moment in each bufferless ring network, the permission to use the dedicated slot is transferred successively between switching nodes in each bufferless ring network. The permission to use the dedicated slot is transferred after transmission of data in the dedicated slot is completed.

A power conversion device includes a host device to control each submodule, and a plurality of repeating devices to relay communication between the host device and each submodule. The host device includes a command information generator to generate command information including an arm command, and a communication controller provided for each arm. Each of a plurality of communication controllers extracts, from the command information, an arm command associated with the communication controller, and transmits a communication frame including the extracted arm command to a repeating device that is connected to each submodule included in the arm associated with the communication controller.

A hybrid architecture for avionics data transmission and a corresponding system are disclosed. In one aspect, the architecture includes a plurality of subscriber stations connected by a data transmission capability. The stations are connected on the one hand by a first capability for transmitting data to their neighbors to form at least a first data transmission network in a closed ring between the stations and on the other hand by a second capability for transmitting data to a capability forming a central communication plan switch to form at least one second data transmission network in a star between the stations and the capability forming the central plan switch.

A system and method for cluster topology aware container scheduling for efficient data transfer. The method begins by configuring a server architecture that includes an inner ring of servers including a server that is a specialized hardware accelerator that provides a specialized computation, an outer ring of servers that includes central processing unit servers and no specialized hardware accelerator, and a network switch to transfer data between the inner ring and the outer ring of servers. An orchestrator receives a request to execute a container, and the orchestrator reads a latency tolerance of the container, where the latency tolerance can be either a real time or a batch tolerance. The scheduler schedules the container to execute, based on the latency tolerance of the container, in either the inner ring or the outer ring of servers. The orchestrator injects the container with instructions to access the specialized hardware accelerator.

A network interface of a network user having at least one physical interface for connecting the network interface to a network interface of a different network user, at least one data selector, which is connected to the physical interface and which is suitable for receiving data from the physical interface and sending data to the physical interface, and at least one data switch, which is connected to the data selector and which is suitable for receiving data from the data selector and sending data to the data selector.

Reception information of frames received at a redundant port may be stored to a data structure in group of data structures such that reception information of all frames in a sequence are not stored to the same data structure and the reception information can be quickly accessed for duplicate detection. The data structure includes reception information for a portion of consecutive frames in a sequence of frames transmitted by a specific transmitter node. A communications layer address of the transmitter node and information capable of identifying a portion of consecutive frames in a sequence of frames are derived from a received frame. The reception information for the received frame in the data structure is read on the basis of derived information capable of identifying the received frame within the portion of consecutive frames.

An electronic device includes multiple networking devices arranged in a stack. The networking devices may include configurable ports, where a given configurable port in the configurable ports may be configured as a data port or a stacking port. During operation, a networking device in the stack may be designated as a master in the stack. In response, the networking device may provide one or more probe messages to determine a state of the networking devices, where the state includes one or more connections among the networking devices. Then, the networking device may verify that the one or more connections are correct. When the one or more connections are correct, the networking device may define a subset of the configurable ports in the networking devices as stacking ports.