The set of manual area addresses configured on this
Intermediate System.
At least one row in which the value of
isisManAreaAddrExistState is active must be present.
The maximum number of rows in this table for
which the object isisManAreaAddrExistState has the
value active is 3.
An attempt to create more than 3 rows of
isisManAreaAddrEntry with state 'active' in one
instance of the IS-IS protocol should
return inconsistentValue.