Why Use Ntp Protocol; Configuring And Displaying Ntp Server Settings - Nokia ESB26 User Manual

31.
Table 31-1 NTP Timeserver Commands
C o m m a n d
time-server ntp add
time-server ntp delete
time-server ntp show
time-server ntp key add
time-server ntp key delete
time-server ntp key show
time-server ntp start

Why Use NTP Protocol ?

NTP is the most reliable of all time synchronization protocols. The advantages of NTP are:
• high redundancy, achieved by a complicated mechanism of processing
incoming data;
• authentication of incoming data;
•
widespread distribution of free, highly accurate NTP timeservers around the
world;
•
highly accurate time synchronization.

Configuring and Displaying NTP Server Settings

To run NTP synchronization you must set some parameters before starting to poll servers
(You can configure the client to poll up to five remote NTP timeservers, in contrast to the
"Daytime" and "Time" remote synchronization protocols that synchronize with only one
server -- see the description of the time-server command in The NTP Time-Server
Commands).
NOTE
1. Please read the information in the www.ntp.org site carefully to achieve efficient
results in tuning and running an NTP server. This is important in order to fully test the
NTP client of the switches.
2. For an NTP server to operate properly and with stability, it will be necessary to
configure a few IP addresses of some actively working NTP timeservers.
3. An updated list of public primary and secondary NTP servers is available as well on the
www.ntp.org site.
MN700004 Rev 01
NTP Client Description
D e s c r i p t i o n
Adds a server to the NTP server list.
Deletes a server from the NTP server list.
Displays existing NTP timeserver list.
Add authentication key.
Deletes authentication key.
Displays existing NTP keys.
Starts NTP timeserver polling.
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