A network system for a data center is described in which an access node sprays a data flow of packets over a logical tunnel to another access node. In one example, a method comprises establishing, by a plurality of access nodes, a logical tunnel over a plurality of data paths across a switch fabric between a source access node and a destination access node included within the plurality of access nodes, wherein the source access node is coupled to a source network device; and spraying, by the source access node, a data flow of packets over the logical tunnel to the destination access node, wherein the source access node receives the data flow of packets from the source network device, and wherein spraying the data flow of packets includes directing each of the packets within the data flow to a least loaded data path.

In one embodiment, a device in a network receives a notification from a neighbor of the device indicative of a child node of the device requesting a parent change from the device to the neighbor. The device updates an existing routing path from the device to the child node to be routed through the neighbor, in response to receiving the notification from the neighbor. The device receives an instruction to remove the updated routing path from the device to the child node through the neighbor. The device removes the updated routing path from the device to the child node, in response to receiving the instruction to remove the updated routing path.

A communication device comprising: a first processing function for performing protocol processing of received datagrams; a second processing function for performing protocol processing for received datagrams at a higher level than the first processing function; and a power controller; the device being configured such that the power controller can place the second processing function in a low power state while the first processing function remains capable of performing protocol processing of received datagrams; and the first processing function comprising a mesh datagram processing function configured to process datagrams of a mesh protocol by analyzing received datagrams of the mesh protocol, determining a subset of those datagrams for retransmission, and causing the device to retransmit the determined ones of those datagrams.

A node in network is configured to buffer data received from other nodes across multiple channels. The node process a portion of the buffered data associated with a subset of those channels. When the node receives data on that subset of channels that includes a notification, the node then processes a larger portion of the buffered data associated with a larger number of channels. In doing so, the node may identify additional notifications include within data that was buffered but not previously processed. The node may also coordinate with other nodes in order to process buffered data upon identification of a notification.

A system includes a control system. The control system includes a processor configured to receive a first signal from a light source within an industrial facility. The first signal includes a unique identification code configured to indicate at least a partial identity of a human resource within the industrial facility. The processor is configured to determine a proximity of the human resource with respect to the light source based at least in part on a received signal strength indicator (RSSI) of the first signal, and to generate an indication of a location of the human resource within the industrial facility based on the determined proximity of the human resource to the light source.

Various embodiments are described wherein a set of devices are configured to be a logical mesh network. Each device has a logical mesh network address. Further, the set of logical mesh network addresses form a sequence from a first address to a last address, and intermediate addresses having both a preceding and a next address. The devices store forwarding information used to determine how to forward a received logical mesh network packet. Other embodiments are described and claimed.

A system that communicates across a network is described. During operation, the system receives a subscription request from a subscriber requesting to subscribe to receive information published to a service name. The system applies a function to the service name to generate a value that maps to a root-node associated with the service name. The system forwards the subscription request through the network to the root-node and logs information associated with the subscription request in a subscription table at the root-node, so that the root-node can forward messages that are subsequently published to the service name to the subscriber. Upon receiving a publication request from a publisher requesting to publish a message to the service name, the system first determines the root-node from the service name. The system forwards the publication request to the root-node to be forwarded to one or more subscribers for the service name.

A method for pseudo channel hopping in a node of a wireless mesh network is provided that includes scanning each channel of a plurality of channels used for packet transmission by the node, wherein each channel is scanned for a scan dwell time associated with the channel, updating statistics for each channel based on packets received by the node during the scanning of the channel, and changing scan dwell times of the plurality of channels periodically based on the statistics.

A method of determining the proximity of a first device to a second device, the method comprising, at the second device: receiving a first packet having a first payload and a first lifetime value, the first lifetime value being such so as to cause a device receiving the first packet to not retransmit the first payload; and generating, in dependence on the first packet, a second packet having a second payload and a second lifetime value, the second payload being indicative of the proximity of the first device to the second device and the second lifetime value being such as to cause a device receiving the second packet to retransmit the second payload.

A method for pseudo channel hopping in a node of a wireless mesh network is provided that includes scanning each channel of a plurality of channels used for packet transmission by the node, wherein each channel is scanned for a scan dwell time associated with the channel, updating statistics for each channel based on packets received by the node during the scanning of the channel, and changing scan dwell times of the plurality of channels periodically based on the statistics.