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DriveSec8K
Syntax
DriveSec8K = NET1 | NET2 | NET3 | NET4 | NONE
Description
- This statement controls whether the specified clock extracted from the T1 or E1 line drives the backup network reference clock (Sec8k or CT_NETREF).
- The default value is
NO. In most cases, the backup network reference clock can be ignored when configuring a single network interface as the clock reference.
- In a multi-chassis system, the backup network reference clock (Sec8K or CT_NETREF) is used as the clock source for the MC1 bus. See the MC1 Installation and Developer's Manual for more details.
- To switch to a backup (or secondary) reference at any time, a secondary board must drive the backup signal (Sec8K or CT_NETREF) on the bus. The board that is the clock master must then derive its local clock from the backup signal. This requires executing a command such as swiConfigBoardClock (refer to the Switching Service Developer's Reference Manual for more information).
- agmon only configures the backup reference clock, and will not automatically switch clock references if there is a clock failure. This must be done by application software, using switching commands.
Note: This statement is required for multichassis MC-1-based systems; at least one card in the system must drive Sec8k in at least 1 chassis. Also can be used for a backup PSTN sync ref (from a second digital trunk card) in a single chassis. ConfigClock driver commands may be required to switch to the backup source.
Example
DriveSec8K = NET1
See Also
ClockRef, EnableMVIP
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