802.11 Association Status, 802.11 Deauth Reason codes

Code

802.11 definition

Explanation

0

Successful

1

Unspecified failure

For example : when there is no ssid specified in an association request

10

Cannot support all requested capabilities in the Capability Information field

Example Test: Reject when privacy bit is set for WLAN not requiring security

11

Reassociation denied due to inability to confirm that association exists

NOT SUPPORTED

12

Association denied due to reason outside the scope of this standard

Example : When controller receives assoc from an unknown or disabled SSID

13

Responding station does not support the specified authentication algorithm

For example, MFP is disabled but was requested by the client.

14

Received an Authentication frame with authentication transaction sequence number
out of expected sequence

If the authentication sequence number is not correct.

15

Authentication rejected because of challenge failure

16

Authentication rejected due to timeout waiting for next frame in sequence

17

Association denied because AP is unable to handle additional associated stations

Will happen if you run out of AIDs on the AP; so try associating a large number of stations.

18

Association denied due to requesting station not supporting all of the data rates in the
BSSBasicRateSet parameter

Will happen if the rates in the assoc request are not in the BasicRateSet in the beacon.

19

Association denied due to requesting station not supporting the short preamble
option

NOT SUPPORTED

20

Association denied due to requesting station not supporting the PBCC modulation
option

NOT SUPPORTED

21

Association denied due to requesting station not supporting the Channel Agility
option

NOT SUPPORTED

22

Association request rejected because Spectrum Management capability is required

NOT SUPPORTED

23

Association request rejected because the information in the Power Capability
element is unacceptable

NOT SUPPORTED

24

Association request rejected because the information in the Supported Channels
element is unacceptable

NOT SUPPORTED

25

Association denied due to requesting station not supporting the Short Slot Time
option

NOT SUPPORTED

26

Association denied due to requesting station not supporting the DSSS-OFDM option

NOT SUPPORTED

27-31

Reserved

NOT SUPPORTED

32

Unspecified, QoS-related failure

NOT SUPPORTED

33

Association denied because QAP has insufficient bandwidth to handle another
QSTA

NOT SUPPORTED

34

Association denied due to excessive frame loss rates and/or poor conditions on current
operating channel

NOT SUPPORTED

35

Association (with QBSS) denied because the requesting STA does not support the
QoS facility

If the WMM is required by the WLAN and the client is not capable of it, the association will get rejected.

36

Reserved in 802.11

This is used in our code ! There is no blackbox test for this status code.

37

The request has been declined

This is not used in assoc response; ignore

38

The request has not been successful as one or more parameters have invalid values

NOT SUPPORTED

39

The TS has not been created because the request cannot be honored; however, a suggested
TSPEC is provided so that the initiating QSTA may attempt to set another TS
with the suggested changes to the TSPEC

NOT SUPPORTED

40

Invalid information element, i.e., an information element defined in this standard for
which the content does not meet the specifications in Clause 7

Sent when Aironet IE is not present for a CKIP WLAN

41

Invalid group cipher

Used when received unsupported Multicast 802.11i OUI Code

42

Invalid pairwise cipher

43

Invalid AKMP

44

Unsupported RSN information element version

If you put anything but version value of 1, you will see this code.

45

Invalid RSN information element capabilities

If WPA/RSN IE is malformed, such as incorrect length etc, you will see this code.

46

Cipher suite rejected because of security policy

NOT SUPPORTED

47

The TS has not been created; however, the HC may be capable of creating a TS, in
response to a request, after the time indicated in the TS Delay element

NOT SUPPORTED

48

Direct link is not allowed in the BSS by policy

NOT SUPPORTED

49

Destination STA is not present within this QBSS

NOT SUPPORTED

50

The Destination STA is not a QSTA

NOT SUPPORTED

51

Association denied because the ListenInterval is too large

NOT SUPPORTED

200
(0xC8)

Unspecified, QoS-related failure.
Not defined in IEEE, defined in CCXv4

Unspecified QoS Failure. This will happen if the Assoc request contains more than one TSPEC for the same AC.

201
(0xC9)

TSPEC request refused due to AP’s policy configuration (e.g., AP is configured to deny all TSPEC requests on this SSID). A TSPEC will not be suggested by the AP for this reason code.
Not defined in IEEE, defined in CCXv4

This will happen if a TSPEC comes to a WLAN which has lower priority than the WLAN priority settings. For example a Voice TSPEC coming to a Silver WLAN. Only applies to CCXv4 clients.

202
(0xCA)

Association Denied due to AP having insufficient bandwidth to handle a new TS. This cause code will be useful while roaming only.
Not defined in IEEE, defined in CCXv4

203
(0xCB)

Invalid Parameters. The request has not been successful as one or more TSPEC parameters in the request have invalid values. A TSPEC SHALL be present in the response as a suggestion.

Not defined in IEEE, defined in CCXv4

This happens in cases such as PHY rate mismatch. If the TSRS IE contains a phy rate not supported by the controller, for example. Other examples include sending a TSPEC with bad parameters, such as sending a date rate of 85K for a narrowband TSPEC.