WAP121 - mDNSResponder ERROR: getOptRdata - unknown opt 4

[Arturo Bianchi]

Hi Team,

you can reduce the noise associated with repetitive error messages? Sometimes the error message in question is present with high frequency at various series of small business AP although more than a "error" can be considered a "notice"; I do not know if you can avoid some way that this error condition occurs, that for example, makes shooting unnecessarily alerting via e-mail.

Jun 25 2012 08:33:50     err     mDNSResponder     ERROR: getOptRdata - unknown opt 4
Jun 25 2012 08:33:34     err     mDNSResponder     ERROR: getOptRdata - unknown opt 4      
Jun 25 2012 08:33:26     err     mDNSResponder     ERROR: getOptRdata - unknown opt 4      
Jun 25 2012 08:33:22     err     mDNSResponder     ERROR: getOptRdata - unknown opt 4      
Jun 25 2012 08:33:20     err     mDNSResponder     ERROR: getOptRdata - unknown opt 4      
Jun 25 2012 08:33:19     err     mDNSResponder     ERROR: getOptRdata - unknown opt 4      
Jun 25 2012 08:33:06     err     mDNSResponder     ERROR: getOptRdata - unknown opt 4      
Jun 25 2012 08:33:06     err     mDNSResponder     ERROR: getOptRdata - unknown opt 4      
Jun 25 2012 08:33:02     err     mDNSResponder     ERROR: getOptRdata - unknown opt 4      
Jun 25 2012 08:33:02     err     mDNSResponder     ERROR: getOptRdata - unknown opt 4      
Jun 25 2012 08:33:00     err     mDNSResponder     ERROR: getOptRdata - unknown opt 4      
Jun 25 2012 08:33:00     err     mDNSResponder     ERROR: getOptRdata - unknown opt 4 

73,

Arturo.

[clindoan]

  We have identified some of the Apple client products made the AP generated this kind of log.  You probably see this in the environment with many different Apple's products.  This will be fixed in the next maintenance firmware release.  I don't have a firm date for the release date but I know this is already fixed.

[Arturo Bianchi]

clindoan ha scritto:
You probably see this in the environment with many different Apple's products

Yes,

this is associated with the bonjour sleep protocol, It is intensive when there are many mobile devices from Apple.

clindoan ha scritto:
This will be fixed in the next maintenance firmware release.

Excellent news,

we hope that there is not much to wait!

Thanks,

Arturo.

[chipmartin]

Is there any news on the update that will correct this issue?

I have to powercycle this WAP repeatedly throughout the day.  .  

Sep  6 09:32:11	err	mDNSResponder	ERROR: getOptRdata - unknown opt 4
Sep  6 09:31:55	err	mDNSResponder	ERROR: getOptRdata - unknown opt 4
Sep  6 09:31:47	err	mDNSResponder	ERROR: getOptRdata - unknown opt 4

My first choice would be to kick all of the Apple users off of the network but since I can't do that I need to resolve the issue quickly.

Model		Cisco AP541N
Software Version
Primary Image:		AP541N-K9-2.0(0)
Secondary Image:		AP541N-K9-2.0(0

Any info would be appreciated.  Please let me know if you need additional information.

Thanks

[Arturo Bianchi]

Hi Martin,

chip martin ha scritto:
Any info would be appreciated.  Please let me know if you need additional information.

I do not think that the block is associated with and / or attributable to the message shown in this thread; In fact I also found failures on the AP541, but the frequency of the problem is lower, however, maybe it's time to update the system with the latest version and determine if your problem is still present with the latest version:

Description:	Cisco AP541N Wireless Access Point
Release:	2.0.2
Release Date:	11/Apr/2012
File Name:	AP541N-K9-2.0.2.tar
Size:	10.31 MB (10813440 bytes)
MD5 Checksum:	59943e4ade76238975ab21ca69026473

Finally, here are two threads that discuss specifically some problems encountered on the AP541: the first one opened by me, and the other

73,

Arturo.