7 results about "Substrate network" patented technology

Techniques for managing the distribution of configuration information that supports the flow of packets in a cloud environment are described. In an example, a virtual network interface card (VNIC) hosted on a network virtualization device NVD receives a first packet from a compute instance associated with the VNIC. The VNIC determines that flow information to send the first packet on a virtual network is unavailable from a memory of the NVD. The VNIC sends, via the NVD, the first packet to a network interface service, where the network interface service maintains configuration information to send packets on the substrate network and is configured to send the first packet on the substrate network based on the configuration information. The NVD receives the flow information from the network interface service, where the flow information is a subset of the configuration information. The NVD stores the flow information in the memory.

Techniques for controlling packet flows are described. In an example, a packet is sent on a virtual network. The packet's header includes scoping data that indicates a network boundary within which the packet is permitted and / or prohibited to flow. A network virtualization device of a substrate network receives the packet. The network virtualization device determines the scoping data from the header and, based on network configuration information, determines the forward flow of the packet. If the forward flow falls within a permitted network boundary indicated by the scoping data, the network virtualization device sends the packet forward. Otherwise, the packet is dropped.

Systems and methods for highly-available host networking with active-active or active-backup traffic load-balancing are disclosed herein. The method can include selecting a compute instance from an overlay network residing on a substrate network, identifying a plurality of Network Virtualization Devices (“NVD”) for association with the compute instance, creating a loopback interface on each of the NVDs, each of which loopback interfaces can include a shared IP address that can be in the substrate layer, prepopulating a table in each of the NVDs, the table linking the shared IP address to the compute instance, and each of the plurality of NVDs advertising a unique route to the compute instance via the shared IP address.

An ophthalmic device is disclosed, the ophthalmic device comprising: (a) a step of providing a reactive composition, the reactive composition comprising (i) a polymerization initiator capable of forming two or more free radical groups upon first activation, wherein at least one of the free radical groups is further activatable by subsequent activation, (ii) one or more ethylenically unsaturated compounds, and (iii) a crosslinking agent; (b) a step of subjecting the reactive composition to a first activation step such that the reactive composition polymerizes thereto form a crosslinked substrate network containing covalently bonded activatable free radical initiators; and (c) inactivating at least a portion of the covalently bonded activatable free radical initiators in one or more selected regions of the crosslinked substrate network. An ophthalmic device manufactured by a process comprising: (d) a step of ensuring that the crosslinked substrate network contains retained covalently activatable free radical initiators outside one or more selected regions and optionally within one or more selected regions; (b) a step of contacting the crosslinked substrate network with a grafting composition containing one or more ethylenically unsaturated compounds, wherein the contact is carried out under conditions such that the grafting composition penetrates into the crosslinked substrate network; and (e) a step of activating the retained covalently activatable free radical initiators so that the grafting composition polymerizes with the crosslinked substrate network, thereby forming a grafted polymer network outside the selected regions and optionally partially within the selected regions.

The invention provides a semiconductor device radio frequency modeling method and model for a silicon-on-insulator (SOI) platform. The method comprises the following steps: constructing an equivalent circuit model comprising a gate / body end parasitic impedance network, an intrinsic capacitance module, a body resistance module and a substrate network module; an intrinsic capacitance parameter is extracted through a low-frequency CV test, Cg is decomposed into overlapping capacitance, depletion capacitance and accumulation capacitance, and a hyperbolic tangent function and polynomial correction are introduced; extracting parasitic resistance inductance by using layout information and square resistance; bulk resistance parameters modulated by voltage are extracted based on the high-frequency S parameters, and the body resistance is fitted by adopting an exponential function. The model provided by the invention can accurately reflect the back gate effect and the bulk resistance modulation effect of the SOI device, and shows excellent fitting precision in a wide frequency band, wide voltage and wide temperature range.

Techniques for managing the distribution of configuration information that supports the flow of packets in a cloud environment are described. In an example, a virtual network interface card (VNIC) hosted on a network virtualization device NVD receives a first packet from a compute instance associated with the VNIC. The VNIC determines that flow information to send the first packet on a virtual network is unavailable from a memory of the NVD. The VNIC sends, via the NVD, the first packet to a network interface service, where the network interface service maintains configuration information to send packets on the substrate network and is configured to send the first packet on the substrate network based on the configuration information. The NVD receives the flow information from the network interface service, where the flow information is a subset of the configuration information. The NVD stores the flow information in the memory.

Techniques for controlling packet flows are described. In an example, a packet is sent on a virtual network. The packet's header includes scoping data that indicates a network boundary within which the packet is permitted and / or prohibited to flow. A network virtualization device of a substrate network receives the packet. The network virtualization device determines the scoping data from the header and, based on network configuration information, determines the forward flow of the packet. If the forward flow falls within a permitted network boundary indicated by the scoping data, the network virtualization device sends the packet forward. Otherwise, the packet is dropped.