User's Manual

WinLink User and Installation Guide Version 1.795 5-77

Troubleshooting:

If the VLAN ID is forgotten or there is no VLAN network connected to

the ODU:

• Reset the device.

In the first two minutes both VLAN and no VLAN connections

are available.

Setting the 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

. 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.

Note:

The NTP uses UDP port 123. If a firewall is configured between the

ODU and the NTP server this port must be opened

It can take up to 8 minutes for the NTP to synchronize the ODU date

and time.

 To set 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:

Windows XP is configured by default as a server.

Windows XP command w32tm /stripchart /computer:<server IP> can

be use to check the NTP server connectivity