A weight metric used by the NCDP protocol entity and
associated with a physical interface that supports synchronous
clock recovery. When NCDP is enabled for the physical
interface the value of this object is used by NCDP algorithms
during tree computations.
The lower the administrative weight, the more attractive the
given link is to the NCDP algorithm. If the weight of a link
is changed, it can cause the NCDP protocol entity to
reconstruct the clock distribution tree.