This object indicates the number of basic ACL.
The ACL number ranges from 2000 to 2999.
The default value is 0, indicating no configuration.
The object is used to filter the Summary LSAs that leave the area.
It is incompatible with hwOspfv2AreaFilterExpAclName, hwOspfv2AreaFilterExpPrefix,
and hwOspfv2AreaFilterExpPolicy. Only one object can be configured each time.