One embodiment is a method including configuring a first network element of a fibre channel (“FC”) network as a generator element, wherein the generator employs a link diagnostic protocol to cause a second network element comprising a peer of the first network element as a reflector element, wherein the first and second elements are connected via a link; entering a first diagnostic phase, wherein in the first diagnostic phase, diagnostic capabilities of the first and second elements are determined; and subsequent to completion of the first diagnostic phase, entering a second diagnostic phase in which a deep loopback test is performed, wherein the deep loopback test comprises a frame level loopback test for exposing an issue in a path between the first and second network elements beyond a Media Access Control (“MAC”) layer.

It is possible to know a guideline for adjusting the levels of three voltage thresholds of a PAM4 signal. An error detection device receives a measurement pattern including a pseudo random pattern having equal appearance frequencies of four levels, decodes the measurement pattern into a most significant bit sequence signal MSB and a least significant bit sequence signal LSB, based on three voltage thresholds Vth1, Vth2, and Vth3, identifies and counts, by a level counting unit, the four levels of the measurement pattern, based on the most significant bit sequence signal MSB and the least significant bit sequence signal LSB, and displays numerical values or bar graphs indicating ratios of the appearance frequencies of the four levels of the measurement pattern so as to be in the same order as waveform levels of the measurement pattern, based on a result of the counting.

A test instrument or host device can apply inverse transmitter and receiver functions to data transmitted or received by an electrical and optical transponder. The inverse transmitter and receiver functions are applied to counteract internal signal conversion processes of the transponder. Forward error correction and test pattern analysis may be performed on signals received from the transponder after the inverse receiver function is applied to the received signals.

In an electronic device, N input electrical signals provided to N input connectors result in N output electrical signals corresponding to the N input electrical signals on N of M output connectors, where the N output electrical signals are orthogonal to each other. Moreover, the N input electrical signals result in P output electrical signals corresponding to the N input electrical signals on P of the M output connectors, where the P output electrical signals are orthogonal to each other, but are not orthogonal to the N output electrical signals. The P output electrical signals are linear combinations of the N input electrical signals in which the N input electrical signals have corresponding second phases, where a dot product of a given one of the N output electrical signals with a given one of the P output electrical signals equals a non-zero predefined value.

A device includes a transmitter coupled to a node, where the node is to couple to a wired link. The transmitter has a plurality of modes of operation including a calibration mode in which a range of communication data rates over the wired link is determined in accordance with a voltage margin corresponding to the wired link at a predetermined error rate. The range of communication data rates includes a maximum data rate, which can be a non-integer multiple of an initial data rate.

Facilitating facilitate enablement of a smart HARQ feedback to support outer loop link adaptation in advanced networks (e.g., 4G, 5G, 6G, and beyond) is provided herein. Operations of a method can comprise sending, by a first device comprising a processor, a data packet to a second device. The method also can comprise receiving, by the first device, negative acknowledgement data from the second device. The negative acknowledgement data can indicate that the second device fails to support a modulation and coding protocol of the data packet.

Systems, methods, and storage media for detecting a security intrusion of a network device are disclosed. Exemplary implementations may include a method involving, in the network device including a processor, monitor a light signal associated with a security enabled port of the network device; and in response to detecting a change in the light signal, initiate a security alert.

A phase interpolator of a physical layer (PHY) device comprise a phase interpolator to generate a set of asynchronous sampler clocks. A sampler of the PHY device samples a calibration data pattern using a first sampler clock from the set of asynchronous sampler clocks. A calibration control component of the PHY device detects a misalignment of a phase relationship among the set of asynchronous sampler clocks based on the sampled data. In response to detecting the misalignment, the calibration control component calibrates the first sampler clock using a second sampler clock and a third sampler clock.

A method for storing information on a computer network, comprising receiving, from a first computing device by a second computing device, data to be stored, generating, by the second computing device, a data packet including the data and accessing instructions having a parameter necessary for retrieving the data, and serving, by the second computing device, the data packet to a network comprising one or more nodes and one or more connections between the one or more nodes, wherein the data packet is stored on the network for a period of time by repetitive transmission of the data packet across at least one of the one or more connections.

Presented embodiments facilitate efficient and effective flexible implementation of different types of testing procedures in a test system. In one embodiment, a tester system diagnostic method includes forwarding test signals to a loopback component; receiving the test signals from the loopback component; and analyzing the test signals to diagnose whether or not the test system is experiencing problems associated with electrostatic discharges, including analysis of eye scan configuration data corresponding to characteristics of the test signals. In one exemplary implementation, analyzing the eye scan configuration data, including analyzing symmetry of a graphical representation (e.g., eye pattern, eye diagram, etc.) of the eye scan configuration data with respect to a horizontal graphical representation axis.