Hi, it's not related to H-REAP. The heartbeat will detect a WLC failure after max 35 seconds.
I.e. by default a heartbeat is sent every 30 seconds. When one is missed 3 are sent with 1 sec difference. If still no reply, WLC is considered down.
You also have the fast heartbeat option on WLC, which is one heartbeat per second but that's maybe aggressive for H-REAP.
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It's actually configurable now that I look into it :
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