Abstract: Systems, methods, and computer-readable media are provided for re-establishing a Bidirectional Forwarding Detection (BFD) session. A method, according to one implementation, include a step of receiving, at a local end device, a first BFD control packet from a remote end device when a BFD session between the local end device and remote end device is down. For example, the first BFD control packet may include a remote discriminator number associated with the remote end device and a local discriminator number presumed to be associated with the local end device. The method further includes a step of replying to the remote end device with a second BFD control packet including an actual discriminator number of the local end device in response to determining that the local discriminator number included in the first BFD control packet is non-zero and differs from the actual discriminator number of the local end device.

Abstract: Systems and methods include obtaining overlay telemetry data from a plurality of overlays, wherein each overlay is an application and there is a corresponding telemetry adaptor for each overlay; obtaining underlay telemetry data from one or more underlays, wherein each underlay includes physical infrastructure for supporting one or more of network, compute, and store functions for the plurality of overlays; analyzing the overlay telemetry data and the underlay telemetry data via a Key Performance Factor (KPF) model that correlates one or more of the plurality of overlays and the one or more underlays together; responsive to an anomaly or a threshold crossing based on the KPF model, performing a Root Cause Analysis (RCA) to identify a root cause of the anomaly or the threshold crossing; and mapping one or more actions with associated priorities to the root cause utilizing one or more remediation modules each associated with an overlay.

Abstract: Systems and methods include, responsive to a request for capacity change of X channels, X is an integer >1, on an optical section (14) and at an Optical Add/Drop Multiplexer (OADM) node (12) in an optical network (10), dividing optical spectrum on the optical section into M slots, M is an integer >1, such that the capacity change of X channels takes a maximum of N steps, N is an integer >1; and performing the capacity change of X channels in up to the N steps in an interleaved manner that changes a subset of the X channels in each of the N steps. For each step, the performing can include a maximum of M/N slots of the M slots with spacing between each of the M/N slots not used for the capacity change in a corresponding step. The spacing can be f, (N+f), (2N+f), . . . , M over the optical spectrum, where f is each step, f=1, 2, . . . , N.

Abstract: Disclosed herein is an apparatus that includes a housing including a first opening and a second opening. The first opening forms a suction connection with a transportable component. The apparatus includes a valve connected with the second opening a channel defined within the housing. The channel extends between the first opening and the second opening. The apparatus includes a vacuum maintaining mechanism disposed within the channel, and the vacuum maintaining mechanism holds a partial vacuum within the channel.

Abstract: A first (second) electrical input port receives a first (second) drive signal. A first (second) transmission line is configured to propagate a first (second) electromagnetic wave over at least a portion of a first (second) optical waveguide arm of an MZI to apply an optical phase modulation. A drive signal interconnection structure is configured to provide a first electrical connection between the first electrical input port and an inner electrode shared by the transmission lines, and a second electrical connection between the second electrical input port and respective outer electrodes of the transmission lines; and is configured to preserve relative phase shifts between the drive signals. An impedance associated with a first electric field distribution between the inner electrode and a first of the outer electrodes is substantially equal to an impedance associated with a second electric field distribution between the inner electrode and a second of the outer electrodes.

Abstract: Systems and methods for stabilizing power levels from excessive oscillations in an optical line system of a communications network are provided. A method, according to one implementation, includes the step of detecting a perturbation of an optical power level in an optical line system having a plurality of cascaded optical power controllers. The method also includes the step of determining an estimated location to which a power controller of the plurality of cascaded optical power controllers is positioned downstream of the perturbation with respect to other power controllers of the plurality of cascaded optical power controllers. Based on the estimated location to which the power controller is positioned downstream of the perturbation, the method also includes the step of providing feedback in a control loop to reduce the effects of the perturbation.

Abstract: Systems and methods for controlling network configurations or assignments are provided. A method, according to one implementation, includes a step of calculating transmission characteristics between each pair of a plurality of pairs of modems at opposite ends of a Dense Wavelength-Division Multiplexing (DWDM) transport link using specifications of the modems measured during production. The method also includes the step of selecting a pair of modems from the plurality of pairs of modems based on results obtained by calculating the transmission characteristics and based on one or more user-defined service requests.

Abstract: A carrier depletion-based Silicon Photonic (SiP) modulator using capacitive coupling includes a high-k dielectric material in or on slabs, between a rib. A capacitance (Ck) of the high-k dielectric material is larger than a capacitance (Cpn) of the rib, thereby reducing the high frequency impedance and improving bandwidth of the modulator. A modulator includes a first electrode; a first slab connected to the first electrode at a first end; a rib connected to the first slab at a second end of the first slab; a second slab connected to the rib at a first end; a second electrode connected to the second slab at a second end of the second slab; and a high-k dielectric material disposed in or on a portion of each of the first slab and the second slab, thereby enabling capacitive coupling.

Abstract: An optical modulator includes a first Radio Frequency (RF) line and a second RF line; an optical waveguide along a length of the modulator with an input and an output; and a plurality of segments along the length including a first set of segments, a single RF line crossing, and a second set of segments, wherein the first set of segments and the second set of segments have an inversion of their respective orientation at the RF line crossing, and wherein the RF line crossing is located off center relative to the plurality of segments, wherein each of the first RF line and the second RF line extend along the length and cross one another at the RF line crossing.

Abstract: Systems and methods for mitigating network attacks include, responsive to detection of malicious traffic in a network, causing creation of an isolated network slice in the network where the isolated network slice is a set of connection resources that are allocated to a flow of traffic and that spans a plurality of network devices in the network; and causing rerouting of the malicious traffic from a source node of the malicious traffic to a deceptive network resource along the isolated network slice.

Abstract: A noise-shaping enhanced (NSE) gated ring oscillator (GRO)-based ADC includes a delay which delays and feedbacks an error signal to an input of the NSE GRO-based ADC. The feedback error signal provides an order of noise-shaping and the error signal is generated at the input of the NSE GRO-based ADC from an input signal, the feedback error signal, and a front-end output. A voltage-to-time converter converts the error signal to the time domain. A GRO outputs phase signals from the time domain error signal by oscillating when the error signal is high and inhibiting oscillation otherwise. A quantization device quantizes the phase signals to generate the front-end output. A quantization extraction device determines a quantization error from the quantized phase signals. A time-to-digital converter digitizes the quantization error to generate a back-end output. An output device generates a second order noise-shaped output based on the front-end and the back-end outputs.

Abstract: Systems and methods implemented by a network element include executing a virtual machine that processes and manages a first Blockchain; communicating with a plurality of nodes in the network, each being part of a peer-to-peer network that manages the first Blockchain, wherein at least one node of the plurality of nodes one of i) operates at a different network layer and ii) utilizes a different protocol for communication, from the network element; and performing one or more applications utilizing the first Blockchain.

Abstract: Systems and methods include receiving a traceroute packet at a relay node; responding to the traceroute packet with a first data structure inside the traceroute packet that indicates a propagation mode at the node and an operation type performed at the node, receiving subsequent traceroute packets from the initiator node with a second data structure inside the subsequent traceroute packets with data used to indicate changes in a header of the subsequent traceroute packets, and forwarding the subsequent traceroute packets with the changes to the header based on the data. The systems and methods can include utilizing the first data structure to determine the changes in the header of the subsequent traceroute packets. This can be used in Multiprotocol Label Switching (MPLS), Segment Routing (SR), and Internet Protocol (IP), where a TTL/Hop Limit propagation is limited.

Abstract: Systems and methods include receiving a request for a service in a Segment Routing network; determining an intended path for the service, provisioning a head-end node with a Segment Identifier (SID) list for the intended path, and reserving bandwidth for the service on the intended path; monitoring the Segment Routing network; and responsive to a condition determined based on the monitoring, updating the SID list for the service. The condition can include a current path for the service in the Segment Routing network differing from a provisioned path in the Segment Routing network. The condition can be based on any of a failure in the Segment Routing network, a topology change in the Segment Routing network, bandwidth changes in the Segment Routing network, an optimization timer, and input from an operator.

Abstract: Systems and methods include storing one or more counters in a plurality of locations in Double Data Rate (DDR) Random Access Memory (RAM) such that each counter is stored partially in multiple locations across the DDR RAM; and accessing banks in the DDR RAM sequentially for read operations and write operations associated with the one or more counters. The multiple locations include a location in each bank of the banks in the DDR RAM. A read operation for a counter is performed by reading all of the corresponding multiple locations and combining associated values to return a result for the counter. A write operation for a counter is performed by writing to a location of the multiple locations that is currently in sequence.

Abstract: A data center fabric includes a plurality of Field Programmable Gate Arrays (FPGAs), each FPGA interconnected by a plurality of links with other FPGAs, a plurality of servers in a data center, and physical network functions associated with the data center, wherein the plurality of FPGAs form a virtual fabric for switching between the FPGAs, the plurality of servers, and the physical network functions, and wherein the virtual fabric is arranged in a compound graph and a flat network with each FPGA being a node and a diameter of the compound graph and the flat network is indicative of a maximum number of hops for a packet through the virtual fabric.

Abstract: A management system for an optical line system includes one or more processors and memory storing instructions that, when executed, cause the one or more processors to receive State of Polarization (SOP) measurements from one or more optical components in the optical line system, wherein the SOP measurements are taken while traffic-bearing channels are operating, and monitor health of one or more fibers based on the SOP measurements. The health can include detection and/or localization of SOP transients.

Abstract: A Zero Touch Provisioning (ZTP) client, such as a network element, includes one or more processors and memory comprising instructions that, when executed, cause the one or more processors to configure an unnumbered interface to communicate via Internet Protocol version 6 (IPv6) and communicate to a server over a network, wherein the unnumbered interface is an interface which does not have an IPv6 address which is routable in the network, auto provision Open Shortest Path First version 3 (OSPFv3) based on a reply from a DHCPv6 relay agent, and request data from the network for provisioning.

Abstract: An optical Digital Signal Processor (DSP) circuit includes a digital core configured to implement digital signal processing functionality and configured to operate at a plurality of baud rates including a full baud rate and a half-baud rate; and an analog interface including a Digital-to-Analog Converter (DAC) section and an Analog-to-Digital Converter (ADC) section, wherein the analog interface is connected to the digital core and is configured to operate at the full baud rate when the digital core is configured to operate at any of the plurality of baud rates.

Abstract: Systems and methods for a Border Gateway Protocol (BGP) route aggregation exception include advertising, to BGP peers, of a plurality of prefixes using BGP route aggregation or summarization; detecting a failure that is local to the router affecting a prefix of the plurality of prefixes; and advertising an aggregation exception that identifies the prefix to all of the BGP peers. The systems and methods can also include detecting recovery of the failure; and sending a withdrawal of the aggregation exception to all of the BGP peers.