Access point restart with "Reason not known"

[theerapongpomp]

Hi,

I have an issue of AP restart with the reason not known.

I have check the log from the switch and only link up and down happened at the time. Trying to find more information of the reason but didn't have much. Anyone ever found this?

-------------------------------------------------------------------

Cisco IOS Software, C3700 Software (AP3G2-K9W8-M), Version 15.3(3)JK6, RELEASE SOFTWARE (fc4)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2021 by Cisco Systems, Inc.
Compiled Sat 24-Jul-21 00:50 by mcpre

ROM: Bootstrap program is C3700 boot loader
BOOTLDR: C3700 Boot Loader (AP3G2-BOOT-M) LoaderVersion 15.2(4)JB, RELEASE SOFTWARE (fc1)

apth02510fa-01 uptime is 8 hours, 18 minutes
System returned to ROM by power-on
System image file is "flash:/ap3g2-k9w8-mx.153-3.JK6/ap3g2-k9w8-xx.153-3.JK6"
Last reload reason: Reason Not Known

-----------------------------------------------

Thanks,

[Leo Laohoo]

Post the complete output to the command "dir".

[theerapongpomp]

Here it is.

Directory of flash:/

3 -rwx 2516 Feb 4 2023 09:15:57 +00:00 event.log
38 drwx 576 Mar 1 1993 00:03:50 +00:00 ap3g2-rcvk9w8-mx
4 -rwx 0 Mar 1 1993 00:00:35 +00:00 config.txt
5 drwx 0 Mar 1 1993 00:01:09 +00:00 configs
6 drwx 2368 Feb 4 2023 09:15:56 +00:00 ap3g2-k9w8-mx.153-3.JK6
83 -rwx 14360 Apr 28 2023 06:15:18 +00:00 private-multiple-fs
84 -rwx 368 Apr 27 2023 23:45:18 +00:00 capwap-saved-config
85 -rwx 368 Apr 28 2023 06:15:18 +00:00 capwap-saved-config-bak
86 -rwx 408 Apr 28 2023 07:45:05 +00:00 env_vars

40900608 bytes total (18765824 bytes free)

------------------ show ram: ------------------

Directory of ram:/

2 -rwx 32422 Apr 28 2023 08:01:07 +00:00 ncilib_0.txt
3 -rwx 64 Mar 1 1993 00:01:21 +00:00 sensord_CSPRNG0
4 -rwx 262111 Apr 28 2023 07:58:57 +00:00 deLog00.txt
5 -rwx 16352 Mar 1 1993 00:00:14 +00:00 X2.bin
6 -rwx 5840 Mar 1 1993 00:00:14 +00:00 HA2.bin
7 -rwx 64 Mar 1 1993 00:01:23 +00:00 sensord_CSPRNG1
8 -rwx 73944 Apr 28 2023 08:02:13 +00:00 deLog10.txt
9 -rwx 8176 Mar 1 1993 00:00:14 +00:00 Q2.bin
10 -rwx 64 Mar 1 1993 00:01:24 +00:00 sensord_CSPRNG2
11 -rwx 262155 Apr 28 2023 07:43:56 +00:00 deLog20.txt
12 -rwx 242864 Apr 28 2023 08:02:13 +00:00 deLog21.txt
13 -rwx 2460 Mar 1 1993 00:00:14 +00:00 triggerfish_cpld.img
14 -rwx 1189888 Mar 1 1993 00:00:15 +00:00 8004.img
15 -rwx 7972 Apr 28 2023 08:02:13 +00:00 deLog01.txt
16 -rwx 261978 Apr 28 2023 07:30:43 +00:00 deLog11.txt
18 -rwx 102784 Mar 1 1993 00:00:15 +00:00 X5.bin
19 -rwx 232320 Mar 1 1993 00:00:15 +00:00 HA5.bin
22 -rwx 342672 Mar 1 1993 00:00:15 +00:00 Q5.bin
26 -rwx 1176356 Mar 1 1993 00:00:16 +00:00 8006.img

11999232 bytes total (7772160 bytes free)

------------------ dir nvram: ------------------

Directory of nvram:/

30 -rw- 0 <no date> startup-config
31 ---- 0 <no date> private-config
1 ---- 23 <no date> persistent-data
2 ---- 4100 <no date> lwapp_ap.cfg
7 ---- 1272 <no date> lwapp_multi_slot.cfg
9 ---- 528 <no date> lwapp_ap_tlv.cfg
10 ---- 4100 <no date> lwapp_ap.cfg.bak

32768 bytes total (18380 bytes free)

[Leo Laohoo]

No crash file(s), no core file(s) present. 

I would have to say the AP lost power.  

[Rich R]

Yes it looks that way.  Sometimes event.log will tell you something useful but that one has been there since the software was installed.  Any controlled reload will write the event.log before it restarts.

So like Leo says could be power otherwise the hardware may be starting to fail and intermittently doing a hard reset.

15.3(3)JK6 = 8.10.162.0.  If you want to eliminate possible bugs that have been fixed since then suggest to upgrade to 8.10.185.0.

[theerapongpomp]

thanks all for the information.