The maximum number of non-default AS-external LSAs entries that can be stored in the link state database. If the value is -1, then there is no limit. When the number of non-default AS-external LSAs in a router's link state database reaches rlOspfExtLsdbLimit, the router enters overflow state. The router never holds more than rlOspfExtLsdbLimit non-default AS-external LSAs in its database. OspfExtLsdbLimit MUST be set identically in all routers attached to the OSPF backbone and/or any regular OSPF area (i.e., OSPF stub areas and NSSAs are excluded). This object is persistent and when written the entity SHOULD save the change to non-volatile storage.