The Boeing Company

Eric J Miller

Arun Ayyagari

James P Scott

Richard A Noyola

David P Haldeman

Douglas W Meyer, Jr

An avionics data communication network includes a computing device configured to asynchronously transmit data packets in parallel via three or more redundant network interface controllers (NICs). The data packets offered to the avionics data communication network are bound using a token bucket filter (TBF). Three or more redundant network switches are configured to receive and relay the data packets from a different NIC of the three or more redundant NICs of the computing device. An avionics device is configured to receive the data packets from the computing device within a deterministic end-to-end transmission delay bound, the avionics device receiving the data packets via at least one of the three or more redundant network switches.

Asynchronous data transmission over avionics communication network

The present disclosure provides for synchronization of multi-core systems by monitoring a plurality of debug trace data streams for a redundantly operating system including a corresponding plurality of cores performing a task in parallel; in response to detecting a state difference on one debug trace data stream of the plurality of debug trace data streams relative to other debug trace data streams of the plurality of debug trace data streams: marking a given core associated with the one debug trace data stream as an affected core; and restarting the affected core.

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Los Angeles, CA, United States of America

Eric J Miller