APs 1852 not join after WLC restart.

[thbinhvdc]

I use Cisco Wireless LAN Controller 2504 and AP 1852. 

I config AP joined to Wireless LAN Controller 2504. If Wireless LAN Controller reboot, AP not re-join to Cisco 2504.

Please help me fix this problem.

Many thanks.

Regards.

[Leo Laohoo]

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@thbinhvdc wrote:

If Wireless LAN Controller reboot, AP not re-join to Cisco 2504.

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That sounds like NTP is not configured on the WLC.  Post the complete output to the following commands:
1. WLC: sh sysinfo;
2. WLC: sh time; and
3. AP: sh version

[thbinhvdc]

Dear Sir/Madam

I provide info:

Manufacturer's Name.............................. Cisco Systems Inc.

Product Name..................................... Cisco Controller

Build Info....................................... Engineering Special

Product Version.................................. 8.5.140.0

Bootloader Version............................... 1.0.16

Field Recovery Image Version..................... 1.0.0

Firmware Version................................. PIC 16.0





OUI File Last Update Time........................ Sun Sep 07 10:44:07 IST
2014





Build Type....................................... DATA + WPS



System Name...................................... neolab-wlc

System Location..................................

System Contact...................................

System ObjectID.................................. 1.3.6.1.4.1.9.1.1279

IP Address....................................... 172.16.4.2

IPv6 Address..................................... ::

Last Reset....................................... Software reset

System Up Time................................... 2 days 0 hrs 37 mins 32
secs



--More or (q)uit current module or to abort

System Timezone Location......................... (GMT +7:00) Saigon, Hanoi,
Bangkok, Jakatar

System Stats Realtime Interval................... 5

System Stats Normal Interval..................... 180



Configured Country............................... Multiple Countries :
CN,HK,VN

Operating Environment............................ Commercial (0 to 40 C)

Internal Temp Alarm Limits....................... 0 to 65 C

Internal Temperature............................. +34 C

External Temperature............................. +39 C

Fan Status....................................... 4400 rpm



State of 802.11b Network......................... Enabled

State of 802.11a Network......................... Enabled

Number of WLANs.................................. 1

Number of Active Clients......................... 45



OUI Classification Failure Count................. 206



Memory Current Usage............................. 34

Memory Average Usage............................. 34

CPU Current Usage................................ 0

CPU Average Usage................................ 0





--More or (q)uit current module or to abort

Flash Type....................................... Compact Flash Card

Flash Size....................................... 1073741824



Burned-in MAC Address............................ 64:D8:14:DB:65:C0

Maximum number of APs supported.................. 75

System Nas-Id....................................

WLC MIC Certificate Types........................ SHA1









show time



Time............................................. Mon Jul 22 13:29:26 2019



Timezone delta................................... 0:0

Timezone location................................ (GMT +7:00) Saigon, Hanoi,
Bangkok, Jakatar



NTP Servers

NTP Version.................................. 3

NTP Polling Interval......................... 86400



Index NTP Key Index NTP Server
Status NTP Msg Auth Status

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









Please help me

Rgds



Tran Hoa Binh

[patoberli]

1. You need to configure a reachable NTP server with valid time.

2. Check if your WLC requires a FUS upgrade (I would say yes): https://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/fus-rn-20.html

[Sandeep Choudhary]

paste the complete bootup process from AP console.

Regards

[thbinhvdc]

Dear Sir/Madam

I cleared config and reboot AP.

I will schedule to reboot WLC at this weekend and inform later.

I very thanks for your reply.

Best regards



Tran Hoa Binh (Mr)

[Leo Laohoo · Accepted solution]

Just as suspected. The WLC isn't configured with NTP. This is why every time the WLC reboots the AP won't join until the correct time and date is configured.

[thbinhvdc]

Thank you very much.