Fast, reliable and error-free 100G/200G/400G backbone and metro networks are a key ingredient to deliver bandwidth-hungry services such 4G/5G mobile connectivity, fiber to the home (FTTH) or Remote PHY (for cable operators). This drives service providers to push fiber networks to the maximum by using a variety of technologies (new modulation formats, flexible grid photonic layer, higher baud modems), without increasing network outage probability. In this webinar, Ciena, a leading provider of telecommunications equipment, and EXFO, a well-established supplier of test and measurement systems, join forces to discuss how to optimize a high speed network and maximize its uptime. Topics covered will include an overview of technologies that enable improvements in spectral efficiency, networking implications of higher capacity systems, and techniques such as optical signal-to-noise ratio (OSNR) measurements of 100G+ signals and transport layer tests (transceiver validation, multiservice testing, etc) that can be used to proactively ensure optimal system performance.