Codes de statut d’association 802.11

wifi

En Wifi 802.11, les codes d’association / désassociation sont standardisés. Voici le tableau qui les explique!

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.

802.11 Deauth Reason Codes

When running a client debug, this code will match the ReasonCode from the output: « Scheduling mobile for deletion with delete Reason x, reasonCode y »

Code 802.11 definition Explanation
0 Reserved NOT SUPPORTED
1 Unspecified reason TBD
2 Previous authentication no longer valid NOT SUPPORTED
3 station is leaving (or has left) IBSS or ESS NOT SUPPORTED
4 Disassociated due to inactivity Do not send any data after association;
5 Disassociated because AP is unable to handle all currently associated stations TBD
6 Class 2 frame received from nonauthenticated station

 

NOT SUPPORTED

7 Class 3 frame received from nonassociated station NOT SUPPORTED
8 Disassociated because sending station is leaving (or has left) BSS TBD
9 Station requesting (re)association is not authenticated with responding station NOT SUPPORTED
10 Disassociated because the information in the Power Capability element is unacceptable NOT SUPPORTED
11 Disassociated because the information in the Supported Channels element is unacceptable NOT SUPPORTED
12 Reserved NOT SUPPORTED
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
NOT SUPPORTED
14 Message integrity code (MIC) failure NOT SUPPORTED
15 4-Way Handshake timeout NOT SUPPORTED
16 Group Key Handshake timeout NOT SUPPORTED
17 Information element in 4-Way Handshake different from (Re)Association Request/Probe
Response/Beacon frame
NOT SUPPORTED
18 Invalid group cipher NOT SUPPORTED
19 Invalid pairwise cipher NOT SUPPORTED
20 Invalid AKMP NOT SUPPORTED
21 Unsupported RSN information element version NOT SUPPORTED
22 Invalid RSN information element capabilities NOT SUPPORTED
23 IEEE 802.1X authentication failed NOT SUPPORTED
24 Cipher suite rejected because of the security policy NOT SUPPORTED
25-31 Reserved NOT SUPPORTED
32 Disassociated for unspecified, QoS-related reason NOT SUPPORTED
33 Disassociated because QAP lacks sufficient bandwidth for this QSTA NOT SUPPORTED
34 Disassociated because excessive number of frames need to be acknowledged, but are not
acknowledged due to AP transmissions and/or poor channel conditions
NOT SUPPORTED
35 Disassociated because QSTA is transmitting outside the limits of its TXOPs NOT SUPPORTED
36 Requested from peer QSTA as the QSTA is leaving the QBSS (or resetting) NOT SUPPORTED
37 Requested from peer QSTA as it does not want to use the mechanism NOT SUPPORTED
38 Requested from peer QSTA as the QSTA received frames using the mechanism for which
a setup is required
NOT SUPPORTED
39 Requested from peer QSTA due to timeout NOT SUPPORTED
40 Peer QSTA does not support the requested cipher suite NOT SUPPORTED
46-65535 46–65 535 Reserved NOT SUPPORTED
98 Cisco defined TBD
99 Cisco defined
Used when the reason code sent in a deassoc req or deauth by the client is invalid – invalid length, invalid value etc
Example: Send a Deauth to the AP with the reason code to be invalid, say zero

 

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