EndRun Sonoma N12, User Manual

Page: 45 / 174

S o n o m a U s e r M a n u a l 28
C H A P T E R T H R E E
29 S o n o m a 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 )
you will see the
ntpq.exe
command prompt:
ntpq>
Use the command
peers
to display the NTP peers which your computer is using. One of them should be the Sonoma 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.)
You can verify that authentication is being used by issuing the command
associations
to display the characteristics of the client server associations. In the “auth” column of the display,
you should see “OK” for the row corresponding to the Sonoma server. If you see “bad”, you should
wait a few minutes to be sure that there is a problem since “bad” is the initial state of this setting. If
the “bad” indication persists then you must check your configuration for errors. Typically this is due
to a typing error in creating the ntp.keys file on the client that causes a mismatch between the keys
being used by the server and client. (If you transfer the file by
ftp
or
scp
, this shouldn’t be a prob-
lem.) It is also possible to have a typing error in the ntp.conf file that causes the needed key to not be
included in the “trustedkey” list.
Windows: Broadcast/Multicast NTP Client Setup
Broadcast/multicast client setup is relatively simple, if:
• You have been able to successfully communicate with the Sonoma on your network.
• Your Sonoma has been configured to perform broadcasts or multicasts by running the
ntpconfig
shell script. (This is not the factory default configuration, so be sure to run
ntpconfig
.) If you are
going to use MD5 authentication, your Sonoma must have been configured to operate with authenti-
cation in the broadcast/multicast mode, and you must know which of the trusted keys it is using for
broadcast/multicast operation. The example Sonoma configuration shown in
Configuring the NTP
Server above will be assumed in the example configuration commands shown here.
• You have installed NTP on your client computer.
• You have successfully performed the Windows: MD5 Authenticated NTP Client Setup on your
client computer, if you plan to use MD5 authentication.
Configure NTP Client for Broadcast
You must edit the
ntp.conf
file. Assuming that your Sonoma server has been configured to use key 2
for broadcast authentication as shown in the example in Configuring the NTP Server above, make
sure that key 2 is included in the
trustedkey
line, and add this line to the end of the
ntp.conf
file:
broadcastclient