Cisco 1852i Bootloop

[da-support-nl]

Hello everybody,

Currently i am experiencing bootloop issues on multiple 1852i access points.

I can't really find any clue on what goes wrong, perhaps a firmware issue but i can't be sure. 

Hoping someone can read my log file and sees what goes wrong and why. 

I bought these 1852 access points about a year ago and they started acting up a few months ago. 

There are currently running firmware 8.5.135.0.

[Leo Laohoo]

RMA the AP.  It is dead.

[Mark Elsen]

 - FYI : https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvf71074?rfs=iqvred

 M.

[Rich R]

I agree with @Leo Laohoo - the radio hardware is dead (says so in the logs) - nothing to do with software bug @Mark Elsen 

The only way to resolve this is to replace the AP.

[da-support-nl]

Okay i will RMA it then.

I still find it weird that these fairly new AP's die one by one. 

Can this have anything to do with the POE switch?

And can you point me to the lines of log that tell you that its dead? (Trying to learn and understand the logs). 

Thank you!!

[Mark Elsen]

                            >...And can you point me to the lines of log that tell you that its dead? 

  wcp/RadDrv1 :: Dot11BaseDriver vendor_get_bssid ioctl SIOCGIFHWADDR failed for apr1v13 error No such device

  The way I see it :  the software tries to access a device-component which does not respond or is not available (probably a radio). Actions of last resort could be factory reset and or cold power start (e.g.)

 M.

[Rich R]

> I still find it weird that these fairly new AP's die one by one.

Known issue with 1832 APs so probably no surprise to see the same on 1852s.  See numerous mentions of the high failure rates of 1832s on these forums.

> Can this have anything to do with the POE switch?

Unlikely.  Obviously you should make sure you're using the right equipment which complies with standards and configured correctly but this is more likely a problem with sub-standard components used in the APs.

ps: I should point out that Cisco insist that even the high failure rate of the 1832s is within their predicted MTBF over the entire installed base.

[Scott Fella]

When you issue an RMA, then its up to you to either have TAC review and provide you with an answer, or else, you just end up replacing the unit.  I tend to know when an ap is bad and also it might be easier to just replace the ap.  Environment can also be the cause of ap's failing especially in a dirty environment.  Now, I'm not saying this is your case, but the only way to find out, is to open a TAC case and then have them provide you with root cause before you RMA the device.