Viavi Solutions Inc.

Reynald Dupuis

Hans Joerg Wolf

Karthik Subramanian

Brian Bowman

Paul Snead

Disclosed are an apparatus and testing methods for performing testing operations over multiple types of links and through multiple potential points of failure to segment sources of problems, which may relate to reported or actual instances of service disruption in a network communication environment. The apparatus may perform service layer testing directly via an optical link, in addition to via Ethernet service layer testing. The apparatus may further conduct tests on other layers as well, including the physical layer, the network layer, and the link layer. To facilitate efficient testing, the apparatus may integrate programmable workflow profiles that specify tests to be conducted, and may interface with a cloud platform for sharing results of the tests, providing end-to-end testing of various components and types of links (whether optical or electrical, including wired and wireless links). Results of the tests may provide guidance to resolve detected problems.

Identifying and segmenting performance issues over optical networks and inpremises interfaces with integrated workflows

In some examples, aggregation-based speed testing may include ascertaining, by a test speed analyzer, a test speed that corresponds to a maximum specified data transfer rate for a data transmission link. A test range generator may determine a maximum specified port speed of a test port of a device connected to the data transmission link. The test range generator may determine whether the maximum specified port speed is less than the test speed, and if so, divide the test speed into a plurality of test ranges. A total value of the test ranges may be equal to the test speed. A test performer may perform tests corresponding to the test ranges, and obtain intermediate test results. A test result generator may generate, based on aggregation of the intermediate test results, an aggregated test result that represents an actual speed associated with the data transmission link.

Aggregation-based speed testing

Disclosed are apparatuses and testing methods for emulating an Optical Network Terminal (ONT) device for communicating or otherwise working with an Optical Line Terminal (OLT) device that was configured to operate with the ONT device. Such emulation may include configuring various settings of the apparatus so that the apparatus may appear to the OLT to be the ONT device. For example, the emulation may include accessing and using authentication/authorization related settings and network configuration settings of the ONT, thus permitting the apparatus to connect to a Passive Optical Network and test services and the quality of service experience without having to reconfigure the OLT.

Test instruments and methods for emulating optical network terminal (ONT) devices and testing optical networks based on the emulation

Identifying and segmenting performance issues over optical networks and in-premises interfaces with integrated workflows

A test instrument connectable to a network to provide copper impairment testing and remediation in a digital subscriber line (DSL) service is provided. The test instrument may comprise a port connectable to a test point in a network. The test instrument may also comprise a processing circuit to perform tests in the following categories: (i) shorts, grounds, and opens, (ii) true length, (iii) balance, and (iv) series fault, wherein the combination of these tests may determine copper impairment. Once tests are conducted, one or more remediation recommendations may be provided based at least in part on failure in one of the test categories. The test results and remediation recommendations may then be presented at an output, such as a display at a test instrument or user device.

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Germantown, MD, United States of America

Reynald Dupuis