Limitations of clock configuration with board keywords

You can configure clocking in a system by specifying each board's role in the board's record in the NMS OAM database using keywords. Configuring clocking in this manner is best if you do not want to implement clock fallback in your system, or in test configurations where clock reliability is not a factor. Otherwise, for maximum system reliability, control clocking at the system level using an application such as clockdemo. For more information, refer to Running clockdemo.

For a detailed overview of H.100 and H.110 bus clocking, refer to CT bus clocking overview. For more information about retrieving and setting NMS OAM keyword values, refer to the NMS OAM Service Developer's Reference Manual.

Configuring clocking with board keywords has the following limitations:

Refer to the System configuration file example for an example of using board keywords to set up clock fallback in a multiple-board system.