The set-overload command is configured in the process of an IS-IS router. By default, how long after being restarted does the router exit the overload state?
The set-overload command places the router into an overload state, indicating to neighbors that the router should not be used as a transit node. This is mainly used during bootup to stabilize the routing environment.
By default, this overload state lasts for 600 seconds (10 minutes). After this time, the router automatically clears the overload state, assuming no manual configuration changes were made.
✅ Official Reference from Huawei:
" By default, a router remains in the overload state for 600 seconds after the IS-IS process restarts. During this period, the router does not function as a transit node in the SPF calculation. "
— [Huawei HCIA-Datacom Study Guide – IS-IS Protocol Chapter]
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