This read-only object reports the current overload state of the IS-IS link-state database at a given level, where true indicates the router is low on an essential resource such as memory, whether set directly by an admin via dellNetIsisSysOloadSetOverload or triggered automatically. When the state is overloaded, the router originates LSPs with the overload bit set so peers route around it for transit traffic. An admin seeing dellNetIsisSysLevelOverloadState as true unexpectedly would investigate memory exhaustion on that router as a likely cause.