The Network Time Protocol (NTP) is a protocol for synchronizing the clocks of computer systems over packet-switched, variable-latency data networks. NTP uses UDP on port 123 as its transport layer. See more on Wikipedia pages.
How to Configure NTP Server on Solaris 10:
[Check NTP services:
bash-3.00# svcs ntp
STATE STIME FMRI
disabled 21:14:03 svc:/network/ntp:default
bash-3.00#
NTP services still ‘disabled’, OK leave it disabled state, before enable NTP services, we need to create / edit ntp.conf.
bash-3.00# cp /etc/inet/ntp.server /etc/inet/ntp.conf
bash-3.00# vi /etc/inet/ntp.conf
[Find two lines:
server 127.127.XType.0
fudge 127.127.XType.0 stratum 0
Replace “XType” with your External Clock Device.the complete list are on ntp.conf file.
—————–
# This is the external clock device. The following devices are
# recognized by xntpd 3-5.93e:
#
# XType Device RefID Description
# ——————————————————-
# 1 local LCL Undisciplined Local Clock
# 2 trak GPS TRAK 8820 GPS Receiver
# 3 pst WWV PSTI/Traconex WWV/WWVH Receiver
# 4 wwvb WWVB Spectracom WWVB Receiver
# 5 true TRUE TrueTime GPS/GOES Receivers
# 6 irig IRIG IRIG Audio Decoder
#etc…..
—————-
Usually we use XType number 1, “Undisciplined Local Clock”. So the configuration become like this:
server 127.127.1.0
fudge 127.127.1.0 stratum 0
You can also syncing to an external NTP server:
Go to http://www.pool.ntp.org/ for a list of public time servers:
change `server 127.127.XType.0`
to `server time_server`
[Exp for Indonesia pool zone:
server 0.id.pool.ntp.org
server 0.asia.pool.ntp.org
server 2.asia.pool.ntp.org
[then ENABLE the NTP services:
bash-3.00# svcadm enable ntp
bash-3.00# svcs ntp
STATE STIME FMRI
online 21:38:44 svc:/network/ntp:default
Now, your NTP server will broadcast its packet using UDP port 123 on Multicast network 224.0.0.1
How to Configure NTP Client on Solaris 10:
On client side, check ntp services, leave it in disabled state, we’ll re-enable again later:
[Copy ntp.client become ntp.conf file:
bash-3.00# cp /etc/inet/ntp.client /etc/inet/ntp.conf
The default config is “multicastclient 224.0.1.1″ It mean your client passively waits for a ntp server to provide NTP packet to multicast network 224.0.1.1. If you want to sync your clock to a particular server, even though the clock is coming from the Internet or from the server’s hardware clock then specify it as:
server <NTP_server_ip_address>
Donf forget to remove/comment the line “multicastclient 224.0.1.1″
[ENABLE the NTP services:
bash-3.00# svcadm enable ntp
bash-3.00# svcs ntp
STATE STIME FMRI
online 22:30:15 svc:/network/ntp:default
Run “ntpq -p” to check which NTP server you are using right now.
[Read more:
# man xntpd
[Additional references:
Using NTP to Control and Synchronize System Clocks – Part I: Introduction to NTP
http://www.sun.com/blueprints/0701/NTP.pdf
Using NTP to Control and Synchronize System Clocks – Part II: Basic NTP Administration and Architecture
http://www.sun.com/blueprints/0801/NTPpt2.pdf
Using NTP to Control and Synchronize System Clocks – Part III: NTP Monitoring and Troubleshooting
http://www.sun.com/blueprints/0901/NTPpt3.pdf
How to Configure NTP Server on Solaris 10:
[Check NTP services:
bash-3.00# svcs ntp
STATE STIME FMRI
disabled 21:14:03 svc:/network/ntp:default
bash-3.00#
NTP services still ‘disabled’, OK leave it disabled state, before enable NTP services, we need to create / edit ntp.conf.
bash-3.00# cp /etc/inet/ntp.server /etc/inet/ntp.conf
bash-3.00# vi /etc/inet/ntp.conf
[Find two lines:
server 127.127.XType.0
fudge 127.127.XType.0 stratum 0
Replace “XType” with your External Clock Device.the complete list are on ntp.conf file.
—————–
# This is the external clock device. The following devices are
# recognized by xntpd 3-5.93e:
#
# XType Device RefID Description
# ——————————————————-
# 1 local LCL Undisciplined Local Clock
# 2 trak GPS TRAK 8820 GPS Receiver
# 3 pst WWV PSTI/Traconex WWV/WWVH Receiver
# 4 wwvb WWVB Spectracom WWVB Receiver
# 5 true TRUE TrueTime GPS/GOES Receivers
# 6 irig IRIG IRIG Audio Decoder
#etc…..
—————-
Usually we use XType number 1, “Undisciplined Local Clock”. So the configuration become like this:
server 127.127.1.0
fudge 127.127.1.0 stratum 0
You can also syncing to an external NTP server:
Go to http://www.pool.ntp.org/ for a list of public time servers:
change `server 127.127.XType.0`
to `server time_server`
[Exp for Indonesia pool zone:
server 0.id.pool.ntp.org
server 0.asia.pool.ntp.org
server 2.asia.pool.ntp.org
[then ENABLE the NTP services:
bash-3.00# svcadm enable ntp
bash-3.00# svcs ntp
STATE STIME FMRI
online 21:38:44 svc:/network/ntp:default
Now, your NTP server will broadcast its packet using UDP port 123 on Multicast network 224.0.0.1
How to Configure NTP Client on Solaris 10:
On client side, check ntp services, leave it in disabled state, we’ll re-enable again later:
[Copy ntp.client become ntp.conf file:
bash-3.00# cp /etc/inet/ntp.client /etc/inet/ntp.conf
The default config is “multicastclient 224.0.1.1″ It mean your client passively waits for a ntp server to provide NTP packet to multicast network 224.0.1.1. If you want to sync your clock to a particular server, even though the clock is coming from the Internet or from the server’s hardware clock then specify it as:
server <NTP_server_ip_address>
Donf forget to remove/comment the line “multicastclient 224.0.1.1″
[ENABLE the NTP services:
bash-3.00# svcadm enable ntp
bash-3.00# svcs ntp
STATE STIME FMRI
online 22:30:15 svc:/network/ntp:default
Run “ntpq -p” to check which NTP server you are using right now.
[Read more:
# man xntpd
[Additional references:
Using NTP to Control and Synchronize System Clocks – Part I: Introduction to NTP
http://www.sun.com/blueprints/0701/NTP.pdf
Using NTP to Control and Synchronize System Clocks – Part II: Basic NTP Administration and Architecture
http://www.sun.com/blueprints/0801/NTPpt2.pdf
Using NTP to Control and Synchronize System Clocks – Part III: NTP Monitoring and Troubleshooting
http://www.sun.com/blueprints/0901/NTPpt3.pdf
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