Cisco Headend System Release 2.7 Installation Guide
Chapter 8 Configure the Network Time Protocol
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Configuring the NTP
Configuring the NTP Server
Complete the following steps to sync the NTP server on the DTACS Server with the
time server on the DNCS server.
1 Open an xterm window.
2 Type
time server on the DNCS server.
1 Open an xterm window.
2 Type
pgrep -lf ntp
and press Enter to verify that xntpd is not running before
you continue.
If xntpd is running, a message similar to the following will appear:
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/usr/local/xntpd/ntpd -c /etc/inet/ntp.conf -p /etc/ntp.pid
-l /var/adm/log/ntp
-l /var/adm/log/ntp
If xntpd is not running, nothing will appear after you enter the command.
3 As root user, type
/usr/local/xntpd/ntpdate -d <IP of NTP Server>
and press Enter to verify network connectivity to the NTP server.
Example:
Example:
# /usr/local/xntpd/ntpdate -d 10.253.0.1
Notes:
Use the DNCS as the NTP server. This keeps the DTACS time in sync with
the DNCS. The DNCS should already be configured to use an NTP server.
the DNCS. The DNCS should already be configured to use an NTP server.
You may have multiple NTP servers.
Results: The system should respond with both transmit and receive packets
followed by time information sent from the NTP server. If the final line of the
output states "no server suitable for synchronization found", then either a
problem exists with the NTP server or a network issue is preventing a
connection. Verify the IP address with your Network Administrator and attempt
the command listed above again. If you are still unable to resolve this problem,
contact Cisco Services for assistance.
followed by time information sent from the NTP server. If the final line of the
output states "no server suitable for synchronization found", then either a
problem exists with the NTP server or a network issue is preventing a
connection. Verify the IP address with your Network Administrator and attempt
the command listed above again. If you are still unable to resolve this problem,
contact Cisco Services for assistance.
4 Type
su -
and press Enter to change to root.
5 Use the vi editor to add the NTP server IP's to the /etc/hosts file. Add the IP and
hostname of each NTP server. For example:
10.253.0.1 dncsatm
Notes:
There should already be a dncsatm entry in the /etc/hosts file.
You can also include additional NTP server entries in the /etc/hosts file.
6 Type
cd /etc/inet
and press Enter to change to the /etc/inet directory. The
/etc/inet directory becomes the working directory.
7 Type
cp ntp.conf ntp.conf.bak
and press Enter to make a copy of the
existing ntp.conf file.