OmniSwitch 6250 CLI Reference Guide November 2009 page 5-1
5 Network Time Protocol
Commands
The Network Time Protocol (NTP) is used to synchronize the time of a computer client or server to
another server or reference time source, such as a radio or satellite receiver. It provides client time accura-
cies within a millisecond on LANs, and up to a few tens of millisecond on WANs. Typical NTP configura-
tions utilize multiple redundant servers and diverse network paths in order to achieve high accuracy and
reliability.
It is important for networks to maintain accurate time synchronization between network nodes. The stan-
dard timescale used by most nations of the world is based on a combination of Universal Coordinated
Time (UTC) (representing the Earth’s rotation about its axis) and the Gregorian Calendar (representing the
Earth’s rotation about the Sun). UTC time is disseminated by various means, including radio and satellite
navigation systems, telephone modems, and portable clocks.
The MIB information for NTP is as follows:
Filename: AlcatelIND1Ntp.mib
Module: alcatelIND1NTPMIB
A summary of available commands is listed here:
ntp server
ntp server synchronized
ntp server unsynchronized
ntp client
ntp broadcast
ntp broadcast-delay
ntp key
ntp key load
show ntp client
show ntp server status
show ntp client server-list
show ntp keys
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