hAP AC Lite slow to boot

4 posts / 0 new

Sat, 12/17/2022 - 21:08

KN6NK

I just flashed a new hAP AC Lite (RB952Ui-5ac2nD) with 3.22.12.0 but it takes an exceptionally long time to boot up, more than 5 minutes. Is this expected behavior for this device, or should it boot faster than that? I also have a RBLHG-5nD with 3.22.12.0 that boots up in less than a minute.
I've attached the support file for the hAP AC Lite (though dmesg looks like it only takes ~30sec from kernel start to link up, I'm not sure what's happening before that...is there a UART console available on these?

Support File Attachment:

supportdata-KN6NK-CORE-202212171755.tgz

Sun, 12/18/2022 - 02:04

k1ky

HAP Slow Boot

We have found that if there is a connection on the WAN port, the HAP AC Lite could take up to 10-15 minutes to boot up and be stable.

Sun, 12/18/2022 - 14:03

(Reply to #2) #3

K6CCC

Never seen mine take that

Never seen mine take that long - and both my hAPs have a wired WAN connection. Normally the only time re-boot is for firmware updates (and I do almost every nightly), and about 4 minutes is pretty normal.

Sun, 12/18/2022 - 14:39

(Reply to #3) #4

KN6NK

Huh. I wonder if the

Huh. I wonder if the bootloader gets stuck trying to discover a bootp/tftp server before failing back to its installed image? After fiddling around with what I assume is a serial port on the board (marked 3.3V/TX/RX/GND) and hitting/holding the reset button in various combinations, I was unable to get any bootloader console output but somehow I got my board booting in ~30sec again.
The Mikrotik bootloader defaults to a "silent mode" with no UART output during boot. Does the AREDN image retain the Mikrotik bootloader or does it have its own bootloader?

https://wiki.mikrotik.com/wiki/Manual:RouterBOOT
https://wiki.mikrotik.com/wiki/Silent_boot

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