The emergence of higher accuracy methods for time transfer is resulting in confusion over which solutions are appropriate for differing network configurations.  This presentation provides an overview of White Rabbit (WR) and IEEE1588 High Accuracy (HA) including intended use cases, network requirements and anticipated results.   Chronology of the talk:   Overview of White Rabbit (WR) & IEEE1588 HA (HA) Use cases for WR/HA Network requirements for utilizing WR/HA Measurement of WR/HA accuracy Future expectations for WR/HA uses