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VoWLAN Problem over WLC5508 / AP1242

Hello,

Our customer has moved his access points from the WSIM in 6509E (Version 7.0.230.0) to the Controller WLC5508 (version 7.4.100.0). Since then he has in the area of "Access Points 1242" massive problems with VoWLAN. In the vicinity of 3602 AP, there is no Problem?

They use the following VoIP Environment: Cisco 7921G and 7925G phones, Call-Manager version 8.6.2.22900-9, Phone Load CP7921G-1.4.2-1.4.2 / CP7925G.

In SYSLOG we found the following entries:

# MM-4 PMKCACHE_ADD_FAILED: mm_listen.c: 8216 Failed to create PMK / CCKM cache entry for station 00: c0: af: *********

We found nothing that helped us of the bug notification at:

https://tools.cisco.com/bugsearch/bug/CSCui50431

I need urgent help. Our client have massive problems in the enviroment of the 1242 Aps. This is a business critical for the customer!

Thanks for quick support

Alexander

4 REPLIES
Hall of Fame Super Gold

VoWLAN Problem over WLC5508 / AP1242

CP7921G-1.4.2-1.4.2

There are know roaming issues with old firmwares like this.

Use 1.4(3) and later. 

New Member

VoWLAN Problem over WLC5508 / AP1242

Hello,

thank you for the information.

But why it worked without problems, as the AP1242 were still connected to the WSIM 6509E? Why does it work with the AP3620 are always connected to the WLC5508 (always the same firmware on the phones)?

Do you have an answer to?

chears Alexander

New Member

VoWLAN Problem over WLC5508 / AP1242

Hello,

sorry, I've posted not the complete LOG-Message, here in full length:

#MM-4-PMKCACHE_ADD_FAILED: mm_listen.c:8216 Failed to create PMK/CCKM cache entry for station 00:c0:af:*********** with update from controller x.x.x.x

Thx for help

Alexander

New Member

VoWLAN Problem over WLC5508 / AP1242

Error Message    %MM-4-PMKCACHE_ADD_FAILED: Failed to create PMK/CCKM cache entry for

station [hex]:[hex]:[hex]:[hex]:[hex]:[hex] with update from controller

[int].[int].[int].[int]

Explanation    Internal system error

Recommended Action    If this message recurs, copy the message exactly  as it appears on the console or in the system log. Research and attempt  to resolve the issue using the tools and utilities provided at  http://www.cisco.com/tac. With some messages, these tools and utilities  will supply clarifying information. Search for resolved software issues  using the Bug Toolkit at http://tools.cisco.com/Support/BugToolKit/. If  you still require assistance, open a case with the Technical Assistance  Center via the Internet at  http://tools.cisco.com/ServiceRequestTool/create/launch.do, or contact  your Cisco technical support representative and provide the  representative with the information you have gathered.

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