ND Clocks User Manual - Rev 2.0.1 Sep-08
12
Symmetricom
®
, Inc.
duplicate IP address condition, the network clock will be re-assigned a fallback IP address of
169.254.xxx.xxx ]
169.254.xxx.xxx IP (fallback) address
DHCP is enabled by default. If DHCP is enabled and no DHCP server can be found the ND clock will default to a
169.254.xxx.xxx address.
In addition, if an IP address conflict is determined when the Ethernet interface is initialized (either DHCP or static) the ND
clock will default to a 169.254.xxx.xxx address.
This 169.254.xxx.xxx is a link local address range (i.e. not allowed on the internet) and is used by Microsoft when their
DHCP clients cannot find a DHCP server.
To determine the cause of why the clock fell back to a 169.254.xxx.xxx address the user should display the status of the
clock.
Please see the “Status” section for details as to how to determine the cause of the fallback IP address.
[Note: Devices which have been assigned a fallback IP address of 169.254.xxx.xxx will be displayed in
the
main WinDiscovery window with RED text, indicating a problem with the configuration.]
Device Name
Each clock is programmed at the factory with a factory device name. This name includes the model
name and a “MAC address” extension.
[Hint: You can change the device name to one convenient for your site – preferably one that helps you
to later identify the exact physical location of the device.]
Administrative Hub
[Note: the Administrative Hub configuration item is reserved for future use.]
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