R T M 3 2 0 5 U s e r M a n u a l
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C H A P T E R S E V E N
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R T M 3 2 0 5 U s e r M a n u a l
N E T W O R K T I M E P R O T O C O L ( N T P )
Configure NTP
You must edit the
ntp.conf
file which
ntpd
, the NTP daemon, looks for by default in the the
/etc
directory. Add this line to the ntp.conf file:
server 192.168.1.120
This line tells
ntpd
to use the NTP server at address 192.168.1.120 in addition to any other servers
which might also be configured in the client’s
ntp.conf
file.
Restart
ntpd
to have it begin using RTM3205. Use the NTP utility
ntpq
to check that
ntpd
is able
to communicate with RTM3205. After issuing the command
ntpq
you will see the
ntpq
command prompt:
ntpq>
Use the command
peers
to display the NTP peers which your computer is using. One of them should be the RTM3205 server
which you have just configured. You should verify that it is being ‘reached’. (You may have to con-
tinue issuing the peers command for a minute or two before you will see the ‘reach’ count increment.)
If you have other peers configured, verify that the offset information for the RTM3205 server peer
and your other peers is in agreement to within a few milliseconds, assuming that the other peers are
synchronized to that level of accuracy.
It may also be useful to start the NTP daemon in ‘debug’ mode (
ntpd -d
) to confirm successful con-
figuration. Refer to the NTP documentation for detailed usage of these debug utilities.
Unix-like Platforms: MD5 Authenticated NTP Client Setup
MD5 authenticated setup is relatively simple, if:
• You have been able to successfully communicate with RTM3205 on your network.
• Your RTM3205 has been configured to perform authentication either by factory default, or by
running the
ntpconfig
shell script. The example RTM3205 authentication configuration shown
in
Configuring NTP Using the Network Interface or Serial Port
above, will be assumed in the ex-
ample configuration commands shown here.
• You have installed NTP on your client computer.
• You have successfully performed the
Unix-like Platforms: Basic NTP Client Setup
on your client
computer.
Summary of Contents for RTM3205
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