| Code |
802.11 definition |
Explanation |
| 0 |
Reserved |
Normal working operation |
| 1 |
Unspecified reason |
We don’t know what’s wrong |
| 2 |
Previous authentication no longer valid |
Client has associated but is not authorised. |
| 3 |
station is leaving (or has left) IBSS or ESS |
The access point went offline, deauthenticating the client. |
| 4 |
Disassociated due to inactivity |
Client session timeout exceeded. |
| 5 |
Disassociated because AP is unable to handle all currently associated stations |
The access point is busy, performing load balancing, for example. |
| 6 |
Class 2 frame received from nonauthenticated station |
Client attempted to transfer data before it was authenticated. |
| 7 |
Class 3 frame received from nonassociated station |
Client attempted to transfer data before it was associated. |
| 8 |
Disassociated because sending station is leaving (or has left) BSS |
Operating System moved the client to another access point using non-aggressive load balancing. |
| 9 |
Station requesting (re)association is not authenticated with responding station |
Client not authorized yet, still attempting to associate with an access poin |
| 10 |
Disassociated because the information in the Power Capability element is unacceptable |
|
| 11 |
Disassociated because the information in the Supported Channels element is unacceptable |
|
| 12 |
Reserved |
Not Used or Special Purpose |
| 13 |
Invalid information element, i.e., an information element defined in this standard for |
|
| which the content does not meet the specifications in Clause 7 |
|
| 14 |
Message integrity code (MIC) failure |
|
| 15 |
4-Way Handshake timeout |
|
| 16 |
Group Key Handshake timeout |
|
| 17 |
Information element in 4-Way Handshake different from (Re)Association Request/Probe |
|
| Response/Beacon frame |
|
| 18 |
Invalid group cipher |
The link speed requested by the client or AP is incompatible. (i,e. trying to operate N only speeds on a G AP) |
| 19 |
Invalid pairwise cipher |
|
| 20 |
Invalid AKMP |
|
| 21 |
Unsupported RSN information element version |
|
| 22 |
Invalid RSN information element capabilities |
|
| 23 |
IEEE 802.1X authentication failed |
|
| 24 |
Cipher suite rejected because of the security policy |
|
| 25-31 |
Reserved |
|
| 32 |
Disassociated for unspecified, QoS-related reason |
Quality of Service has denied the action |
| 33 |
Disassociated because QAP lacks sufficient bandwidth for this QSTA |
|
| 34 |
Disassociated because excessive number of frames need to be acknowledged, but are not |
|
| acknowledged due to AP transmissions and/or poor channel conditions |
|
| 35 |
Disassociated because QSTA is transmitting outside the limits of its TXOPs |
|
| 36 |
Requested from peer QSTA as the QSTA is leaving the QBSS (or resetting) |
|
| 37 |
Requested from peer QSTA as it does not want to use the mechanism |
|
| 38 |
Requested from peer QSTA as the QSTA received frames using the mechanism for which |
|
| a setup is required |
|
| 39 |
Requested from peer QSTA due to timeout |
|
| 40 |
Peer QSTA does not support the requested cipher suite |
|
| 46-65535 |
46--65 535 Reserved |
|
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