Summary of NTP from RFC-1305 Network Time Protocol (Version 3):
NTP is used to synchronize timekeeping among a set of distributed time servers and clients … It provides the protocol mechanisms to synchronize time in principle to precisions in the order of nanoseconds while preserving a non-ambiguous date well into the next century.
The Network Time Protocol (NTP) client is essential for syncing time on various clients in the system. This document shows how to view NTP status and configure NTP on an Aruba switch.
Specify a remote NTP server to use for time synchronization:
ntp server <FQDN|IP-ADDR>
ntp vrf VRF
clock timezone TIMEZONE
show ntp status
Example output:
NTP is enabled.
NTP authentication is enabled.
NTP is using the default VRF for NTP server connections.
Wed Nov 23 23:29:10 PDT 2016
Uptime: 187 days, 1 hours, 37 minutes, 48 seconds
Synchronized to NTP Server 10.0.0.1 at stratum 2.
Poll interval = 1024 seconds.
Time accuracy is within 0.994 seconds
Reference time: Thu Jan 28 2016 0:57:06.647 (UTC)
show command.