Error Message
DOT11-6-FREQ_INUSE: Radio frequency [int] is in use
Explanation - When scanning for an unused frequency, the unit
recognized another radio using the displayed frequency.
Recommended Action - None.
Error Message
DOT11-6-FREQ_USED: Radio frequency [int] selected
Explanation - After scanning for an unused frequency, the unit
selected the displayed frequency.
Recommended Action - None.
Error Message
DOT11-4-NO_SSID: No SSIDs configured, radio not started
Explanation - All Service Set Identifiers (SSIDs) were deleted from
the configuration. At least one must be configured for the radio to run.
Recommended Action - Configure at least one SSID on the access point.
Error Message
DOT11-2-RADIO_FAILED: Interface [interface] failed -- [chars]
Explanation - The radio driver found a severe error and is shutting
down.
Recommended Action - None.
Error Message
DOT11-4-CANT_ASSOC: Cannot associate: [chars]
Explanation - The unit could not establish a connection to a parent
access point for the displayed reason.
Recommended Action - Verify that the basic configuration settings
(SSID, Wired Equivalent Privacy [WEP], and others) of the parent access point
and this unit match.
Error Message
DOT11-4-MAXRETRIES: Packet to client [mac] reached max retries, remove the client
Explanation - Delivery of a packet sent to the client failed many
times, and the maximum retries limit has been reached. The client is deleted
from the association table.
Recommended Action - None.
Error Message
DOT11-AUTH_FAILED: Station [mac-address] authentication failed
Explanation - The station failed authentication.
Recommended Action - Verify that the user entered the correct
username and password, and check that the authentication server is online.
Error Message
DOT11-TKIP_MIC_FAILURE: TKIP Michael MIC failure was detected on a packet (TSC=0x0) received from [mac-address]
Explanation - TKIP Michael MIC failure was detected on a unicast
frame decrypted locally with the pairwise key.
Recommended Action - A failure of the Michael MIC in a packet usually
indicates an active attack on your network. Search for and remove potential
rogue devices from your wireless LAN.
Error Message
DOT11-TKIP_MIC_FAILURE_REPORT: Received TKIP Michael MIC failure report from the station [mac-address] on the packet (TSC=0x0) encrypted and protected by [key] key
Explanation - The access point received an EAPOL-key from a station
notifying the access point that TKIP Michael MIC failed on a packet sent by
this access point.
Recommended Action - None.
Error Message
DOT11-TKIP_MIC_FAILURE_REPEATED: Two TKIP Michael MIC failures were detected within [number] seconds on [interface] interface. The interface will be put on MIC failure hold state for next [number] seconds
Explanation - Because MIC failures usually indicate an active attack
on your network, the interface will be put on hold for the configured time.
During this hold time, stations using TKIP ciphers are disassociated and cannot
reassociate until the hold time ends. At the end of the hold time, the
interface operates normally.
Recommended Action - Michael MIC failures usually indicate an active
attack on your network. Search for and remove potential rogue devices from your
wireless LAN. If this is a false alarm and the interface should not be on hold
this long, use the
countermeasure tkip hold-time command to adjust the hold time.
Error Message
Multicast received for AP sa [mac-address], da [mac-address], ra cbcb.cbcb.cbcb ta [mac-address]
Explanation - The access point received a direct broadcast or
multicast frame in which the dot11 MAC header’s RA address field is a broadcast
or multicast address.
Recommended Action - None. However, if your access point displays
this message frequently, capture these frames with a sniffer for further
analysis.