Loading...
PTP Event Messages
Port 319 is primarily used by the Precision Time Protocol (PTP) to synchronize networked clocks with high precision using event messages. It plays a critical role in environments where accurate timekeeping is essential, such as in telecommunications, financial trading, industrial automation, and power distribution systems..
Precision Time Protocol (PTP), standardized as IEEE 1588, aims to synchronize clocks throughout a computer network with sub-microsecond accuracy. Port 319 specifically manages the transfer of event messages essential to this process. These messages include Sync, Delay_Req, and other critical timestamped packets that facilitate highly accurate clock corrections.
PTP operates by designating a master clock, which distributes time information to slave clocks via these event messages. Slave clocks analyze the timing of incoming packets on port 319 and adjust their local clocks accordingly. This bidirectional exchange substantially reduces drift across networked devices, enabling finely tuned operations.
PTP event messages typically use UDP transport over port 319, while general management and signaling messages are transmitted on port 320. The high granularity of timestamps combined with hardware timestamping allows PTP to outperform protocols like NTP in environments demanding ultra-precise synchronization.