Masterclock CLDNTD12, Руководство пользователя

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3. If DHCP was selected and the network device falls back to a “169.254.xxx.xxx” address
approximately every 10 minutes (depending upon the “Advanced Settings” values) the
Ethernet interface will be reinitialized and the network device will attempt to get an IP
address from the DHCP server. If the network device is successful, the error will be cleared
and the new address from the DHCP server will be used. If a discovery was done using
WinDiscovery was used this initialization will be delayed by two hours.
Status LED is flashing
Status in WinDiscovery says ‘”Unsynchronized”
Clock is unable to find NTP reference, either primary or secondary
Possible reasons and solutions:
4. Verify that the NTP server(s) specified are reachable, communicating, and are not flagging
their reported time as invalid. Use a PC-based SNTP client application to verify the
server(s) if necessary.
5. Verify that a gateway/router/firewall has been configured that allows the device to
communicate outside of its local network.
6. Verify that the IP address configured for the device is correct. If you manually enter or
DHCP assigns an IP address that already exists on the network, this will create an IP
address conflict. The device will reset its address to one within the link-local address space
“169.254.xxx.xxx”. If you see that the IP address starts with “169.254”, obtain a new IP
address for the device or resolve the duplication. Consult your network administrator for a
range of available IP addresses to avoid IP address conflicts.
7. If using DHCP mode, consult your network administrator to ensure that your DHCP server
is configured to automatically supply the NTP server address before selecting the
“Use NTP
server(s) address provided by DHCP server” checkbox. If the DHCP server cannot
automatically supply the NTP server address(s), then deselect this option and enter the
NTP server(s) address(s) manually.
8. Verify that the device is connected to the Ethernet LAN.
9. Verify that all network cables, hubs, etc. are in proper working order. Be sure that Ethernet
crossover “patch cables” are not being used where inappropriate.
If the configuration of the network device is changed while a “169.254.xxx.xxx” is being used (for
example: changing the Time Zone offset), then the current “169.254.xxx.xxx” address will become
the permanent static address and the original conflicting static address will be lost.
At this point, it is necessary to manually change the static IP address to one that does not conflict, or
you may do a [
Reset Configuration ] to restore the system to factory default settings.