| Description | When the value of cwnDistributionMethod is 'manual',
the managed system uses this table to select a source of
network clock for the managed system from the entries in
'cwnClockSourceTable'.
The management system uses 'cwnClockSourceIndex'
to configure the associated clock source to be a primary,
secondary or default clock source.
A source of network clock for the device may be an oscillator
local to the device or a Building Integrated Timing Supply (BITS)
port or an interface that supports synchronous clock recovery.
When the managed system initializes it creates a row for the
device's default source of network clock, (the entry having
'cwnManualSourcePriority' with value 'default').
Only read operations is allowed on the columnar objects in this row.
Other rows are created or destroyed by a management station or
through the device's local management interface when a source
of network clock is configured or removed.
A row is not made active until a valid value for
'cwnManualSourceIndex' is supplied.
A management station may perform a write operation on any
columnar object while the row is active or not in service. |