AP230 frequent reboots

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We are having AP230's reboot randomly.  usually between 3-6 a day in this one building.  We have 38 APs in the building.  We have a Cisco 4500x switch powering them.  I have a case open, but it has been opened for over a month now, so now I reaching out to the community to see if anyone could assist in troubleshooting this issue.

I have another 110 or so 230's that I'm waiting to deploy as well as I need to purchase the rest to finish off our transition, but I am hesitant to do this with us seeing these issue and not really having any suggestions.

BTW, we recently upgraded to 6.2r1a to see if that would fix the issue and it hasn't.  Below are what the last 5 days looked like.

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LB3

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Posted 4 years ago

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Andrew MacTaggart, Champ

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If you download the tech-data from the APs, can you find any clues?

what does the cisco show power inline or show power inline detailed display?

also I would check the cisco 4500-X logs to see if any info is available.

do you have 1 or 2 power supplies on the 4500-X

How is the setup for the APs
full power?
all radios enabled?
lower data rates disabled?

A
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LB3

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Support has analyzed the tech data of numerous APs on different firmware and haven't found anything. I haven't seen anything obvious in the logs.

- APs 2.4 are set to Auto power and usually set themselves to 11dBM, and the 5Ghz is set to auto as well and they stay at 20dBM.  Lower data rates are disabled on the 2.4

- The cisco logs are clear, although I will bump the logging level up to see if anything comes up then.

- There are two 2800w PS's in the 4500x

Power                                             Fan      InlineSupply  Model No          Type       Status       Sensor   Status
------  ----------------  ---------  -----------  -------  -------
PS1     PWR-C45-2800AC    AC 2800W   good         good     good
PS2     PWR-C45-2800AC    AC 2800W   good         good     good

Power supplies needed by system    : 1
Power supplies currently available : 2

Power Summary                      Maximum
 (in Watts)              Used     Available
----------------------   ----     ---------
System Power (12V)        803        1360
Inline Power (-50V)       606        1400
Backplane Power (3.3V)     40          40
----------------------   ----     ---------
Total                    1449        2800


show power inline
Gi1/41    auto   on         16.2       15.4       Ieee PD             4
Gi1/42    auto   on         16.2       15.4       Ieee PD             4
Gi1/43    auto   on         16.2       15.4       Ieee PD             4
Gi1/44    auto   on         16.2       15.4       Ieee PD             4
Gi1/45    auto   on         16.2       15.4       Ieee PD             4
Gi1/46    auto   on         16.2       15.4       Ieee PD             4
Gi1/47    auto   on         16.2       15.4       Ieee PD             4
Gi1/48    auto   on         16.2       15.4       Ieee PD             4
Gi2/41    auto   on         16.2       15.4       Ieee PD             4
Gi2/42    auto   on         16.2       15.4       Ieee PD             4
Gi2/43    auto   on         16.2       15.4       Ieee PD             4
Gi2/44    auto   on         16.2       15.4       Ieee PD             4
Gi2/45    auto   on         16.2       15.4       Ieee PD             4
Gi2/48    auto   on         16.2       15.4       Ieee PD             4
Gi5/41    auto   on         16.2       15.4       Ieee PD             4
Gi5/42    auto   on         16.2       15.4       Ieee PD             4
Gi5/43    auto   on         16.2       15.4       Ieee PD             4
Gi5/44    auto   on         16.2       15.4       Ieee PD             4
Gi5/45    auto   on         16.2       15.4       Ieee PD             4
Gi5/46    auto   on         16.2       15.4       Ieee PD             4
Gi5/47    auto   on         16.2       15.4       Ieee PD             4
Gi5/48    auto   on         16.2       15.4       Ieee PD             4
Gi6/42    auto   on         16.2       15.4       Ieee PD             4
Gi6/43    auto   on         16.2       15.4       Ieee PD             4
Gi6/44    auto   on         16.2       15.4       Ieee PD             4
Gi6/45    auto   on         16.2       15.4       Ieee PD             4
Gi6/46    auto   on         16.2       15.4       Ieee PD             4
Gi6/47    auto   on         16.2       15.4       Ieee PD             4
Gi6/48    auto   on         16.2       15.4       Ieee PD             4
Gi7/41    auto   on         16.2       15.4       Ieee PD             0
Gi7/42    auto   on         16.2       15.4       Ieee PD             4
Gi7/43    auto   on         16.2       15.4       Ieee PD             4
Gi7/44    auto   on         16.2       15.4       Ieee PD             4
Gi7/45    auto   on         16.2       15.4       Ieee PD             4
Gi7/46    auto   on         16.2       15.4       Ieee PD             4
Gi7/47    auto   on         16.2       15.4       Ieee PD             4
Gi7/48    auto   on         16.2       15.4       Ieee PD             4

show power inline gi1/41

Available:1400(w)  Used:606(w)  Remaining:794(w)

Interface Admin  Oper            Power(Watts)     Device              Class
                            From PS    To Device
--------- ------ ---------- ---------- ---------- ------------------- -----

Gi1/41    auto   on         16.2       15.4       Ieee PD             4

Interface  AdminPowerMax   AdminConsumption
             (Watts)           (Watts)
---------- --------------- --------------------

Gi1/41                30.0                 15.4

show power inline gi1/42
Available:1400(w)  Used:606(w)  Remaining:794(w)

Interface Admin  Oper            Power(Watts)     Device              Class
                            From PS    To Device
--------- ------ ---------- ---------- ---------- ------------------- -----

Gi1/42    auto   on         16.2       15.4       Ieee PD             4

Interface  AdminPowerMax   AdminConsumption
             (Watts)           (Watts)
---------- --------------- --------------------

Gi1/42                30.0                 15.4

show power inline gi1/43
Available:1400(w)  Used:606(w)  Remaining:794(w)

Interface Admin  Oper            Power(Watts)     Device              Class
                            From PS    To Device
--------- ------ ---------- ---------- ---------- ------------------- -----

Gi1/43    auto   on         16.2       15.4       Ieee PD             4

Interface  AdminPowerMax   AdminConsumption
             (Watts)           (Watts)
---------- --------------- --------------------

Gi1/43                30.0                 15.4
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Nick Lowe, Official Rep

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Do you have a couple of independent PoE injectors that you could use rather than taking power from the switch for testing purposes?

I have usually found the reboot issues, when they are this frequent, to be power related rather than something else.
(Edited)
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LB3

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I don't have any injectors to try.  I have around 60 AP 141's deployed in different buildings and they don't have reboot issues btw, I forgot to mention that.
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Terence Fleming ThinkWireless, Champ

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If you don't have any spare PoE injectors you can use 12volt DC power supplies: you've probably got a bunch of old ones of these around the place.

You could also swap some of the 141s onto your switch and see if they start having reboot issues as well.


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Nick Lowe, Official Rep

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The other things you could try are to set up Syslog and see if anything interesting appears there and also to set up kernel diagnostic logging:

(Edited)
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LB3

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I do have KDDR enabled, but we haven't seen anything there either.  I've had a support case open for over a month now.  I look into enabling syslog.
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Andrew MacTaggart, Champ

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I had a bad fiber that was causing capwap to crap out, and I believe that the HM up time would change when the AP was able to communicate to the HM eventually, but the APs never went down.

not sure if a show version will display the last reboot time, but it would be interesting to compare the AP uptime to what HM is reporting.
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Stan

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We have recently updated (within the last week) the firmware on our AP230's that were experiencing the same issue to "6.2r1a.1931" that seems to have resolved our reboot issue, but now we are having APs that stop allowing clients to associate until the AP is rebooted...

Hope that helps!
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LB3

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Yes, 6.2r1a.1931 didn't resolved our reboots.  They are actually more frequent now.  Support thinks they may of found something though.  We use Bradford as a NAC in our residential colleges and they are seeing excessive logins to the APs from our Bradford box.
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Van Jones

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Did you ever find a resolution to your reboots?  Was it bad code or was it Bradford or something else?
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LB3

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Both, they had some AP 230 specific bugs, but also some bugs related to integration with Bradford. The issues were resolved as of 6.4r1.