Abstract: One embodiment includes signaling, by a first network node to a transmission unit owner node, identifying one or more remaining wireless time slot-frequency pairings of a current transmission unit assigned to the first network node that will not be used by the first network node during the current transmission unit. The transmission unit owner node reassigns one or more of the remaining wireless time slot-frequency pairings to a second network node in the network to use during the current transmission unit. One embodiment includes communicating information between a first network node and a second network node using a particular time slot-frequency pairing, including a particular frame time from the second network node to the first network node, a particular acknowledgement time from the first network node to the second network node, and a particular acknowledgment of the acknowledgment time from the second network node to the first network node.

Abstract: One embodiment includes: forwarding a particular packet through an Available Routing Construct (ARC) chain topology network. In one embodiment, this forwarding includes: sending the particular packet by each particular non-edge node on an arc of the plurality of arcs receiving the particular packet to each sibling on the arc that did not send the particular packet to said particular non-edge node, while not sending the particular packet if it was received from both siblings of said particular edge node; and sending the particular packet to a respective child node on a second arc of the plurality of arcs by each particular edge node of two edge nodes on the arc after receiving the particular packet. In one embodiment, the network is a wireless deterministic network with pre-assigned time slots for receiving and subsequently sending a same particular packet by each node of the network.

Abstract: Techniques are presented herein for use in a Time Division Multiple Access (TDMA) communication system in which devices send transmissions to each other in time slots during a time frame. A plurality of time slots is allocated for a first device to send traffic to a second device. The first device includes in a transmission during at least one of the plurality of time slots an indicator configured to indicate whether a next time slot in the plurality of time slots is used for traffic from the first device to the second device. Thus, the actual usage of a next time slot in a sequence of a plurality of time slots may be dynamically determined by the transmitting device so that the receiving device(s) need not be in the idle listening mode for the next time slot, thereby saving power.

Abstract: In one embodiment, a first communication is transmitted from a transmitting node in a network using a mesh routing protocol. The first communication is received at a particular node in the network. Based on the first communication, a directional attribute is computed. Based on the directional attribute, a particular direction is computed. Then, a second communication is transmitted from the particular node using a beam forming technique in the second direction.

Abstract: In one embodiment, a device detects a denial-of-service attack and generates a message in response to the detection of the denial-of-service attack. The message is then virally distributed to a plurality of subscribed devices.

Abstract: In one embodiment, a method comprises creating, in a computing network, a loop-free routing topology comprising a plurality of routing arcs for reaching a destination device, each routing arc comprising a first network device as a first end of the routing arc, a second network device as a second end of the routing arc, and at least a third network device configured for routing any network traffic along the routing arc toward the destination device via any one of the first or second ends of the routing arc; and load balancing the network traffic along the routing arcs based on traffic metrics obtained at the first and second ends of the routing arcs, including selectively sending a backpressure command to a first one of the routing arcs supplying at least a portion of the network traffic to a congested one of the routing arcs.

Abstract: The present disclosure generally provides techniques for establishing a unique, ephemeral home address (hoa)/home agent address (ha?) address pair that may be limited to use in a session having a defined lifetime. Limiting the use of this dynamic address pair to a session lifetime and by preventing a mobile node from knowing the static address of a home agent may help protect the home agent from attacks.

Abstract: A multihomed site includes in-site network nodes, and first and second gateways configured for providing access outside of the multihomed site. The network nodes and the gateways are configured for utilizing in-site addresses having an in-site address prefix that is not advertised outside of the prescribed site. Each gateway is configured for outputting an advertisement message into the multihomed site that specifies that the gateway is a home agent for a corresponding extra-site address prefix reachable inside and outside the multihomed site. Each in-site network node includes a mobile IP module configured for acquiring extra-site addresses from each of the advertised extra-site address prefixes, and creating mobile IP tunnels with the first and second gateways, enabling the corresponding extra-site address to be reachable via the in-site address. Each node also includes a selection resource for outputting a packet on a selected mobile IP tunnel, based on preference information.

Abstract: In one embodiment, a switch in a computer network intercepts a packet to a destination target, the packet having a solicited node multicast address of the target as a destination media access control (MAC) address of the packet. As such, the switch may determine whether the solicited node multicast address is a hit or miss within a switch hardware table of the switch, and in response to a hit, re-writes the destination MAC address with a known value of the destination target from the table, and unicasts the packet to the destination target. In one or more additional embodiments, in response to a miss, and in response to a single-switch architecture, the switch drops the packet, while in response to a miss, and in response to a multi-switch architecture, the switch may compute a repository switch for the solicited multicast destination, and unicasts the packet to the computed repository switch.

Abstract: In one embodiment, an intermediate node in a contention-based shared-media computer network determines a scheduled window within which a packet (with an assigned priority) should be transmitted by the intermediate node. In particular, the intermediate node may specifically determine whether an actual transmission time is prior to, during, or after the window, and sets a priority of the packet as either i) a reduced priority when the actual transmission time is prior to the window, ii) the assigned priority when the actual transmission time is during the window, or iii) an augmented priority when the actual transmission time is after the window. As such, the intermediate node may then transmit the packet from the intermediate node with the set priority at the actual transmission time.

Abstract: In one embodiment, a switch in a computer network may receive a neighbor solicitation (NS) message for a target node for which no neighbor authentication (NA) reply has been received at the switch. The switch may then determine whether to forward the NS message to only non-constrained links of the switch, or to both non-constrained links and constrained links of the switch. The determining may be configured to intermittently result in forwarding the NS message for the target node to both the non-constrained links and the constrained links. The switch may then forward the NS message according to the determination.

Abstract: In one embodiment, a node N, within a computer network that utilizes a directed acyclic graph (DAG) to route packets, may select a parent node P that is a parent to the node N in the DAG. The node N may determine a grandparent node GP within the computer network that is a parent of the parent node P in the DAG. The node N may select an alternate parent node P? within the computer network that has connectivity to the grandparent node GP and the node N. A sibling connection may be established within the computer network between the parent node P and the alternate parent node P?. The sibling connection may provide a path for reaching prefixes reachable via the node N.

Abstract: In one embodiment, a method comprises creating, in a computing network, a loop-free routing topology comprising a plurality of routing arcs for reaching multicast listeners from a multicast source, each routing arc comprising a first network device as a first end of the routing arc, a second network device as a second end of the routing arc, and at least a third network device configured for receiving from each of the first and second network devices a copy of a multicast packet originated from the multicast source; and causing the multicast packet to be propagated throughout the loop-free routing topology based on the first and second ends of each routing arc forwarding the corresponding copy into the corresponding routing arc.

Abstract: In one embodiment, a method comprises identifying an age of payload data in a data packet by a wireless network node configured for transmitting the data packet to a multi-hop destination via a wireless mesh network; determining by the wireless network node a schedule for the data packet reaching the multi-hop destination; and the wireless network node prioritizing queuing of the data packet for Collision Sense with Multiple Access and Collision Avoidance (CSMA-CA) based wireless transmission in the wireless mesh network based on the corresponding age, relative to the schedule and respective ages of other data packets awaiting transmission by the wireless network node to the destination, where a higher-aged data packet relative to the schedule is granted have a higher priority than a lower-aged data packet relative to the schedule.

Abstract: A system includes an on-board unit (OBU) in communication with an internal subsystem in a vehicle on at least one Ethernet network and a node on a wireless network. A method in one embodiment includes receiving a message on the Ethernet network in the vehicle, encapsulating the message to facilitate translation to Ethernet protocol if the message is not in Ethernet protocol, and transmitting the message in Ethernet protocol to its destination. Certain embodiments include optimizing data transmission over the wireless network using redundancy caches, dictionaries, object contexts databases, speech templates and protocol header templates, and cross layer optimization of data flow from a receiver to a sender over a TCP connection. Certain embodiments also include dynamically identifying and selecting an operating frequency with least interference for data transmission over the wireless network.

Abstract: In one implementation, sub-interfaces are defined in Layer three (L3) tunnels, such as generic routing encapsulization (GRE) or Internet protocol security (IPsec) tunnels. Sub-interfaces inside a L3 tunnel may be preferred to using several L3 tunnels. The flow label of the tunnel header is used to define sub-interfaces of a tunnel interface. The flow label is populated with a routing instance identifier to index the sub-interfaces.

Abstract: In one embodiment, a mobile router receives a multicast-supported router advertisement message from an attachment mobile router in a mobile ad hoc network, the multicast-supported router advertisement message specifying an attachment prefix and a multicast-capable identifier. The mobile router attaches to the attachment mobile router in response to the multicast-supported router advertisement message and according to a protocol requiring establishment in the mobile ad hoc network of a tree topology having a single multicast clusterhead, and selects a default attachment address within an address space of the attachment prefix. The mobile router receives a multicast request, from an attached node, for receiving a multicast stream, and the mobile router outputs a neighbor advertisement message with multicast extension, to the attachment router, that specifies that access to the multicast stream is requested via the default attachment address.

Abstract: A node in a Low power and Lossy Network (LLN) is managed by monitoring a routing configuration on a node in a LLN. A triggering parameter that is used to invoke an address change on a child node is tracked and a threshold against which to compare the triggering parameter is accessed. The triggering parameter is compared to the threshold. Based on results of comparing the triggering parameter to the threshold, it is determined that an address change at the child node is appropriate. An address change of a child node appearing in the routing configuration is invoked based on the determination that an address change is appropriate.

Abstract: In one embodiment, a device detects a denial-of-service attack and generates a message in response to the detection of the denial-of-service attack. The message is then virally distributed to a plurality of subscribed devices.

Abstract: In one embodiment, a method comprises creating, in a computing network, a hierarchal routing topology for reaching a destination, the hierarchal routing topology comprising a single parent supernode providing reachability to the destination, and a plurality of child supernodes, each child supernode comprising one or more exit network devices each providing a corresponding link to the parent supernode; receiving, in one of the child supernodes, a data packet for delivery to the destination; causing the data packet to traverse along any available data link in the one child supernode independent of any routing topology established by network devices in the one child supernode, until the data packet reaches one of the exit network devices; and the one exit network device forwarding the data packet to the parent supernode, via the corresponding link, for delivery to the destination.