Keeping Time with NTP
June 25, 2008 Tom Van Looy
The Network Time Protocol (NTP) is a protocol for synchronizing the clocks of computer systems over packet-switched, variable-latency data networks. NTP uses UDP port 123 as its transport layer. It is designed particularly to resist the effects of variable latency (jitter buffer).
The Network Time Protocol (NTP) version 3 is described in RFC1305 and the Simple Network Time Protocol (SNTP) version 4 is described in RFC2030. NTP is not related to the much simpler daytime RFC867 and time RFC868 protocols.
NTP client/server on i5/OS
You can validate the current time with the command DSPSYSVAL QDATETIME. The NTP server on