I have a WLC 5520 and about 500 APs: AIR-AP1815M-B-K9.
If some how all these AP reboot (electrical loss for example), there will be about 20 random APs can not boot up. It show red led. On PoE switch port i still see it s up, but empty in show cdp neighbour or, show mac address-table interface gx/x/x.
Then i have to shut & no shut the ports, after that these AP boot up OK.
These issues happen with any OS version i try (8.3 , 8.7 , and 8.10 now)
Anyone got same issue with me ? I feel this AP model is not good, in the past i use AIR-3500 series, it never happen like this.
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