The higher threshold limit for the number of MAC addresses entries
on this VLAN. The instance value of this clcVlanMacLimitHigh
must be greater than the instance value of the clcVlanMaxMacLimit
of the same row, only when the value is not zero.
When the instance value of this object is set to 0, no higher
threshold limit will be applied for this Vlan and the
corresponding instance value of clcVlanMacLimitHighExceededAction
of the same row has no effect.
The default value of this MIB object is the value of
clcMacLimitHighDefault.