Disabling IS-IS CPU Overload Control

By default, IS-IS CPU overload control is enabled. If a device's CPU is overloaded, each module takes necessary measures to control its own CPU usage accordingly. Upon receiving a CPU overload notification from the system, the IS-IS module controls the speeds of some internal computing processes and the establishment of neighbor relationships based on the CPU overload condition to enhance the resilience of IS-IS. In this case, new neighbor relationships cannot be established, and the established neighbor relationships are not affected.