topic The command isn't showing in Wireless

WLC 5508 automatically restarting twice in a week

meiyappan — Mon, 05 Jul 2021 09:23:54 GMT

Hi,

I have very strange issue with my wireless Lan controller. It reboots automatically.

Atleast in week, it restarts once or twice.

If i want to check any historical logs , i can not check since after restarting WLC , all logs will be cleared,

I get the logs from the time it restarts , starting with

COLD STARTS :

I am predicting the issue with temperature setting

right now the Internal temperature is +41 C

How do i check , what is the threshold set for temperature.

can anybody suggest me anything about this ?

Cisco Controller Product Version: 8.0.110.0

Kindly suggest how to resolve this issue

right now the Internal

Leo Laohoo — Mon, 02 Feb 2015 07:56:12 GMT

right now the Internal temperature is +41 C

How do i check , what is the threshold set for temperature.

This is nothing.

Can you post the output to the command "sh sysinfo"?

When the restart happens, do you have a time? Have you checked the source of your power?

Leo@ Yes i checked but the

meiyappan — Mon, 02 Feb 2015 09:22:27 GMT

Leo@ Yes i checked but the power issue is not there.

"sh sysinfo"

Manufacturer's Name.............................. Cisco Systems Inc.
Product Name..................................... Cisco Controller
Product Version.................................. 8.0.110.0
Bootloader Version............................... 1.0.20
Field Recovery Image Version..................... 7.6.95.16
Firmware Version................................. FPGA 1.7, Env 1.8, USB console 2.2
Build Type....................................... DATA + WPS + LDPE

System Name...................................... -WLC
System Location..................................
System Contact...................................

Redundancy Mode.................................. Disabled
IP Address....................................... x.x
IPv6 Address..................................... ::
Last Reset....................................... Power on reset
System Up Time................................... 0 days 0 hrs 46 mins 50 secs
System Timezone Location.........................
System Stats Realtime Interval................... 5
System Stats Normal Interval..................... 180

--More-- or (q)uit
Operating Environment............................ Commercial (0 to 40 C)
Internal Temp Alarm Limits....................... 0 to 65 C
Internal Temperature............................. +41 C
External Temperature............................. +27 C
Fan Status....................................... OK

State of 802.11b Network......................... Enabled
State of 802.11a Network......................... Enabled
Number of WLANs.................................. 2
Number of Active Clients......................... 0

Power Supply 1................................... Present, OK
Power Supply 2................................... Absent
Maximum number of APs supported.................. 500
System Nas-Id.................................... WLC
WLC MIC Certificate Types........................ SHA1/SHA2

Last Reset...................

Leo Laohoo — Mon, 02 Feb 2015 09:22:28 GMT

Last Reset....................................... Power on reset

If this was a hardware/software issue, the message would be different.

Can you ensure the power supply and the power cord are secure? Here's a nice thing to try: Power up the WLC with a different power source, like UPS or from a different power feed, and see if the WLC still resets.

LEO@ let me observe and

meiyappan — Mon, 02 Feb 2015 10:01:35 GMT

LEO@ let me observe and update you.

LEo@ WLC is not reachable

meiyappan — Tue, 03 Feb 2015 13:09:13 GMT

LEo@ WLC is not reachable ,there is no power issue

currently WLC is connected to switch, but the switch interface is showing up, neighbourship is showing none. unable to reach wlc via web and telnet.

if i connect wlc to other power source or manual reboot its will be start working fine.is there anyway to find out issue.

What version of iOS were on

rsaeks — Tue, 03 Feb 2015 15:38:56 GMT

What version of iOS were on you previously? A few weeks back we were on 7.6.120, upgraded to 8.0.110 and eventually went down to 7.6.130 after seeing controller instability. We opened a TAC case on it, ran some console monitoring, but were never able to grab crash details on the 8.0.110 branch.

Since running 7.6.130 we have been solid.

Go to Management > Tech

Leo Laohoo — Tue, 03 Feb 2015 20:54:33 GMT

Go to Management > Tech Support > Controller Crash.

What information do you have there?

its only shows that *****

meiyappan — Wed, 04 Feb 2015 04:23:40 GMT

its only shows that

***** End of Crash File dump *****

Ok, this means the WLC didn't

Leo Laohoo — Wed, 04 Feb 2015 04:27:30 GMT

Ok, this means the WLC didn't "crash".

Use this thread and raise a TAC Case. You could be potentially be looking at a faulty/failing PS or the appliance needs to be checked out.

Uploading Core Dumps from

Abhishek Abhishek — Tue, 17 Feb 2015 02:50:19 GMT

Uploading Core Dumps from Controller to a TFTP or FTP Server

Note This procedure is not applicable for Cisco 2106 and 4400 controllers.

To upload the core dump file from the flash memory of a controller to a TFTP or FTP server using the controller CLI, follow these steps:

Step 1 To see information about the core dump file in flash memory, enter this command:

show coredump summary

Information similar to the following appears:

Core Dump is disabled

Core Dump file is saved on flash

Sw Version.................................... 6.0.83.0

Time Stamp.................................... Wed Feb  4 13:23:11 2009

File Size..................................... 9081788

File Name Suffix........................... filename.gz

Step 2 To transfer the file from the controller to a TFTP or FTP server, enter these commands:

•transfer upload mode {tftp | ftp}

•transfer upload datatype coredump

•transfer upload serverip server_ip_address

•transfer upload path server_path_to_file

•transfer upload filename filename

Note After the file is uploaded, it ends with a .gz suffix. If desired, you can upload the same core dump file multiple times with different names to different servers.

Step 3 If you are using an FTP server, also enter these commands:

•transfer upload username username

•transfer upload password password

•transfer upload port port

Note The default value for the port parameter is 21.

Step 4 To view the updated settings, enter this command:

transfer upload start

Step 5 When prompted to confirm the current settings and start the software upload, answer y.

We recently upgraded to 8.0

eglinsky2012 — Wed, 25 Feb 2015 22:57:59 GMT

We upgraded to 8.0.110.0 from 7.0.230.0 a week ago along with the FUS, and the controller rebooted itself once the day after, once yesterday, and twice today (or was it three times?). Initially, when connectivity was lost, the ALM button on the appliance was blinking orange and the GUI, SSH, and console were inaccessible. Then it rebooted after several minutes.

We contacted our support provider who performed the upgrade. The support provider told me they put a ticket in with Cisco, and as soon as they told Cisco the symptoms and which software, the rep chuckled (as if he knew the answer), said there was an undocumented bug in the software, quickly reviewed the logs (seemingly looking straight to the resource use), and told us to downgrade to 7.6.130.0. The support provider suspects a memory leak. We have roughly 1000 clients and the reboots have happened during peak times in the middle of the day. The downgrade was performed after most people left and it's been stable so far... we'll see what tomorrow brings.

They should be able to

Scott Fella — Thu, 26 Feb 2015 10:22:13 GMT

They should be able to provide you with the bug ID? Is this with a 5508? We have some 8510 installs with v8.0.110.0 and have not ran into this issue with a lot more clients.

-Scott

If they did, it did not get

eglinsky2012 — Thu, 26 Feb 2015 13:36:15 GMT

If they did, it did not get passed on to me. This is a 5508. We also set up the Bonjour routing if that makes a difference. There are 119 services shown in the Bonjour browser.

I am facing the same issue

rajeeshp — Fri, 27 Feb 2015 16:48:03 GMT

I am facing the same issue with WLC 8.0.110.0. For me it happens only when web-auth is enabled for guest login. Any work-around ?

We also employed webauth, but

eglinsky2012 — Fri, 27 Feb 2015 16:50:28 GMT

We also employed webauth, but did not try disabling it. We downgraded to 7.6.

after sysinfoAlso Be concern

gohussai — Fri, 27 Feb 2015 18:21:03 GMT

after sysinfo

Also Be concern regarding the cooling system your using for the WLC ,because this behaviors normally occur because of overheating.

Hi All,I have been running

Razmir Masri Abdul Razak — Sat, 14 Mar 2015 13:32:03 GMT

Hi All,

I have been running version 8.0.110.0 on WiSM2 with HA Pair and experiencing the same issue. The controller will automatically reboot once 2 or 3 days, and now its becoming more frequent. 7.6 code is not an option for me since we are in a middle of deploying 900+ 1700 series AP. I'm going for 8.0.115.0 later and see if reboot still occur.

Razmir, thanks for posting

eglinsky2012 — Sat, 14 Mar 2015 14:19:35 GMT

Razmir, thanks for posting about the 8.0.115 release. I had a quick look through the release notes and it I don't see mentioning of solving a reboot issue. Good luck.

Keep us posted and also let

Scott Fella — Sat, 14 Mar 2015 14:27:21 GMT

Keep us posted and also let us know if you end up opening a TAC case and obtain a bug id.

-Scott