Citrix Systems Network Router NETSCALER 9.3 User Manual
Configuring Clock Synchronization
You can configure your NetScaler appliance to synchronize its local clock with a
Network Time Protocol (NTP) server. This ensures that its clock has the same date and
time settings as the other servers on your network.
Network Time Protocol (NTP) server. This ensures that its clock has the same date and
time settings as the other servers on your network.
You can configure clock synchronization on your appliance by adding NTP server entries
to the ntp.conf file from either the configuration utility or the NetScaler command
line, or by manually modifying the ntp.conf file, and then starting the NTP daemon
(NTPD). The clock synchronization configuration does not change if the appliance is
restarted, upgraded, or downgraded. However, the configuration does not get
propagated to the secondary NetScaler in a high availability setup.
to the ntp.conf file from either the configuration utility or the NetScaler command
line, or by manually modifying the ntp.conf file, and then starting the NTP daemon
(NTPD). The clock synchronization configuration does not change if the appliance is
restarted, upgraded, or downgraded. However, the configuration does not get
propagated to the secondary NetScaler in a high availability setup.
Note: If you do not have a local NTP server, you can find a list of public, open access,
NTP servers at the official NTP site,
NTP servers at the official NTP site,
, under Public Time Servers
List. Before configuring your NetScaler to use a public NTP server, be sure to read the
Rules of Engagement page (link included on all Public Time Servers pages).
Rules of Engagement page (link included on all Public Time Servers pages).
Setting Up Clock Synchronization by Using the CLI
or the Configuration Utility
or the Configuration Utility
To configure clock synchronization from the configuration utility or from the CLI, you
add NTP servers and then enable NTP synchronization.
add NTP servers and then enable NTP synchronization.
To add an NTP server by using the NetScaler command line
At the NetScaler command prompt, type the following commands to add an NTP server
and verify the configuration:
w
and verify the configuration:
w
add ntp server (<serverIP> | <serverName>) [-minpoll <positive_integer>][-maxpoll
<positive_integer>]
<positive_integer>]
w
show ntp server
Example
> add ntp server 10.102.29.30 -minpoll 6 -maxpoll
11
Done
> sh ntp server
NTP Server: xyz.net
Minimum Poll Interval: 6 (64secs)
Maximum Poll Interval: 9 (512secs)
NTP Server: 10.102.29.30
Minimum Poll Interval: 6 (64secs)
Maximum Poll Interval: 11 (2048secs)
Done
Chapter 5
Advanced Configurations
126