User's Manual Part 1

WinLink 1000 Installation and Operation Manual Chapter 4 Configuration
4.8 Setting the Date and Time
Æ
To set Date and time
The ODU maintains a date and time value. The date and time value
should be synchronized with any Network Time Protocol (NTP) version
3 compatible server
1
. On power-up the ODU configures the initial date
and time using an NTP server. If the server IP is not configured or is
not reachable, a default time is set. When configuring the NTP server
IP, you should also configure the offset from the Universal Coordinated
Time (UTC). If there is no server available, you can either set the date
and time, or you can set the manager workstation time. Note that
manual setting is not recommended since reset, power up, or
synchronization with an NTP server will override the setting.
• The NTP uses UDP port 123. If a firewall is configured between the
ODU and the NTP ser er this port must be openedv
2
.
• It can take up to 8 minutes for the NTP to synchronize the ODU date
and time.
1. Click Configuration from the main menu.
2. Select which site to configure.
The Configuration dialog box opens.
3. Select Date & Time (see
Figure 4-13 ).
Not
e
1
Windows XP is configured by default as a server.
2
Windows XP command w32tm /stripchart /computer:<server IP> can be use to
check the NTP server connectivity
Setting the Date and Time 4-23