Addingserverassociations - Microsemi SyncServer S200 User Manual

AddingServerAssociations

NTP server and peer associations provide an important backup source of time if the Syn-
cServer's Input References are unavailable. Having two or more server or peer associations
is important for reliability and redundancy.
(Optional) The user can add associations for NTP servers that reside on the company net-
work:
For NTP servers that the user cannot configure, add server associations, as described
n
below.
For NTP servers that the user can configure, add peer associations as described in
n
Adding Peer Associations.
Note: Avoid creating server associations on two NTP servers that point to each other. Use
peer associations instead.
(Optional) If the SyncServer is located outside the United States, the user can also add at
least one server association that points to a local NTP server. This provides a shorter net-
work path, which improves timing precision and accuracy. Often, public NTP servers are
operated by national timekeeping authorities, telecommunications companies, and uni-
versities. To find a local NTP server, search the Internet for "Public NTP servers". Include
the name of your country at the end of the search string. When available, select NTP servers
that are stratum 1 over those that are stratum 2.
To add a server association:
1. Go to NTP - Config in the web interface.
2. Under Add/Edit Association, for Role, select Server.
3. For Address, enter an IP address (recommended) or domain name.
4. (Optional) Configure the other settings under Add/Edit Association. For more inform-
ation, see NTP - Config.
5. Click SAVE.
6. Click RESTART.
After restarting, the NTP daemon sends regular requests to the server and uses the replies
to compare the NTP server with other servers and peers. The NTP daemon selects the best
server or peer and synchronizes with it.
Also see Configuring NTP Clients.
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Installation Guide
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