Field Notice: FN - 70208 - Aironet 1560, 2800, and 3800 Series Access Points Fail to Pass Traffic - Software Upgrade Recommended

Notice

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.

Revision History

Revision	Publish Date	Comments
1.0	29-May-18	Initial Release
2.0	19-Jun-18	Updated the Products Affected and Workaround/Solution Sections

Products Affected

Affected OS Type	Affected Release	Affected Release Number	Comments
NON-IOS	8.2	8.2.151.0, 8.2.141.0, 8.2.160.0, 8.2.166.0, 8.2.164.0, 8.2.161.0
NON-IOS	8.4	8.4.100.0
NON-IOS	8.5	8.5.105.0, 8.5.103.0

Defect Information

Defect ID	Headline
CSCve57121	2800, 3800 and 1560 series APs fail to pass traffic

Problem Description

Wireless clients might intermittently be unable to pass traffic after association.

Background

Due to a software problem in certain Cisco Aironet Access Points (APs), some clients might be unable to pass traffic after association.

Problem Symptom

A wireless client automatically associates, but after a few seconds it is no longer able to ping its default gateway. If, at that time, this output from the AP CLI is examined:

• show controllers dot11Radio 0 client - For the Slot 0 or 2.4 Ghz radio stat

  (OR) show controllers dot11Radio 1 client - For the Slot 1 or 5 Ghz radio stat

• show controllers nss status

If the client MAC address is present in the show controllers dot11Radio 0 client or show controllers dot11Radio 1 client command output and not present in the show controllers nss status command output, you have encountered this bug.

Example output:

AP-2802-CLI# show controllers dot11Radio 1 client

mac radio vap aid state encr Maxrate is_wgb_wired wgb_mac_addr
11:22:33:44:55:66 1 3 16 FWD OPEN MCS82SS false 00:00:00:00:00:00

AA:BB:CC:DD:EE:FF 1 3 145 FWD OPEN MCS82SS false 00:00:00:00:00:00

AA:AA:AA:BB:BB:BB 1 2 20 FWD OPEN MCS93SS false 00:00:00:00:00:00

BB:BB:BB:AA:AA:AA 1 2 181 FWD OPEN MCS82SS false 00:00:00:00:00:00

AB:AB:AB:BA:BA:BA 1 4 171 FWD AES_CCM128 MCS82SS false 00:00:00:00:00:00

CC:DD:EE:FF:GG:HH 1 2 98 FWD OPEN MCS82SS false 00:00:00:00:00:00

AP-2802-CLI#show controllers nss status

Client Configuration:

Current Count: 5

| MAC | OPAQUE |PRI POL|VLAN|BR|TN|QCF|BSS|RADID|MYMAC|
|BB:BB:BB:AA:AA:AA|B8241B94| 1| 0| 1| 1| 0| 2| 1| 0|

|AA:BB:CC:DD:EE:FF|B8241B94| 1| 0| 1| 1| 0| 3| 1| 0|

|AA:AA:AA:BB:BB:BB|B8241B94| 1| 0| 1| 1| 0| 4| 1| 0|

|AB:AB:AB:BA:BA:BA|B8241B94| 1| 0| 1| 1| 0| 2| 1| 0|

|CC:DD:EE:FF:GG:HH|B8241B94| 1| 0| 1| 1| 0| 2| 1| 0|

In the example output, the client MAC address 11:22:33:44:55:66 is not present in the show controller nss status command output and hence the AP has encountered this issue.

Workaround/Solution

The software upgrades are:

• 8.2.170.0
• 8.3.140.0 or later
• 8.5.110.0 or later
• 8.6.101.0 or later
• 8.7.102.0 or later

How To Identify Affected Products

This problem affects only these AP series with the affected software versions noted previously:

• Cisco Aironet 1560 Series
• Cisco Aironet 2800 Series
• Cisco Aironet 3800 Series

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

• Open a service request on Cisco.com
• By email
• By telephone

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