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%DOT11-7-AUTH_FAILED: Station c023.4921.2100 Authentication failed%Unknown DHCP problem.. No allocation possible

Unanswered Question
Jan 15th, 2014
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Hi All,


My wireless network system is consisting with 7.5 virtuall wireless controller and few 3600i APs.

All SSIDs & APs have been configured in flexconnect & flexconnect groups.

APs acquire IP address & controller IP address via DHCP option 43.


My problem is,

After I created a new SSID & pushed it. APs don't reboot itself but disconnecting from the controller and never come up back until give a manuall power reboot for each APs.


* DHCP server has not been configured any authentication mechanism for APs.*


I got below console outputs:

*Dec  5 16:56:42.830: %DOT11-7-AUTH_FAILED: Station c023.4921.2100 Authentication failed%Unknown DHCP problem.. No allocation possible

*Dec  5 16:56:54.226: %DOT11-7-AUTH_FAILED: Station c023.4921.2100 Authentication failed

-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------                                         

*Dec 21 06:15:03.251: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio1, changed state to down
*Dec 21 06:15:03.283: %LINK-6-UPDOWN: Interface Dot11Radio1, changed state to up
*Dec 21 06:15:04.283: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio1, changed state to up
*Dec 21 06:15:14.135: %LINK-6-UPDOWN: Interface Dot11Radio0, changed state to down
*Dec 21 06:15:14.539: %LINK-5-CHANGED: Interface Dot11Radio0, changed state to reset
*Dec 21 06:15:15.135: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0, changed state to down
*Dec 21 06:15:15.375: %LINK-6-UPDOWN: Interface Dot11Radio0, changed state to up
*Dec 21 06:15:15.387: %LINK-6-UPDOWN: Interface Dot11Radio1, changed state to down
*Dec 21 06:15:15.395: %LINK-5-CHANGED: Interface Dot11Radio1, changed state to reset
*Dec 21 06:15:16.375: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0, changed state to up
*Dec 21 06:15:16.387: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio1, changed state to down
*Dec 21 06:15:16.423: %LINK-6-UPDOWN: Interface Dot11Radio1, changed state to up
*Dec 21 06:15:16.435: %LINK-6-UPDOWN: Interface Dot11Radio0, changed state to down
*Dec 21 06:15:16.451: %LINK-5-CHANGED: Interface Dot11Radio0, changed state to reset
*Dec 21 06:15:17.451: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio1, changed state to up
*Dec 21 06:15:17.451: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0, changed state to down
*Dec 21 06:15:17.491: %LINK-6-UPDOWN: Interface Dot11Radio0, changed state to up
., 26)1 06:15:17.983: %CAPWAP-3-ERRORLOG: Retransmission count for packet exceeded max(CAPWAP_WTP_EVENT_REQUEST
*Dec 21 06:15:18.587: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0, changed state to up
*Dec 21 06:15:24.427: %EVT-4-WRN: Write of flash:/event.capwap done
*Dec 21 06:15:24.447: %LWAPP-3-CLIENTERRORLOG: Switching to Standalone mode
*Dec 21 06:15:24.459: %CAPWAP-3-ERRORLOG: GOING BACK TO DISCOVER MODE
*Dec 21 06:15:24.459: %DTLS-5-SEND_ALERT: Send FATAL : Close notify Alert to 192.168.15.2:5246
*Dec 21 06:15:24.459: %CAPWAP-3-ERRORLOG: Invalid event 46 & state 4 combination.
*Dec 21 06:15:24.459: %CAPWAP-3-ERRORLOG: SM handler: Failed to process timer message. Event 46, state 4
*Dec 21 06:15:24.459: %CAPWAP-3-ERRORLOG: Failed to handle timer message.
*Dec 21 06:15:24.459: %CAPWAP-3-ERRORLOG: Failed to process Periodic Echo timer message.
*Dec 21 06:15:24.507: %WIDS-6-DISABLED: IDS Signature is removed and disabled.
*Dec 21 06:15:26.419: %CLEANAIR-6-STATE: Slot 0 down
*Dec 21 06:15:26.419: %CLEANAIR-6-STATE: Slot 1 down

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



Anybody know the reason for this behavior ?



Thanks,

Charith

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Rasika Nayanajith Wed, 01/15/2014 - 10:01
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    2017 Wireless

Hi Charith,


It's looks like AP goes into Standalone mode due to it cannot reach your WLC. In flexconnect when it cannot reach WLC, it will go into standalone mode without rebooting AP. (in local mode AP will reboot unless it can find a WLC)


Can you check your AP has reahability to your WLC all the time ? Where the DHCP configured for users ?




HTH

Rasika

Charith Gamhewa Wed, 01/15/2014 - 10:11
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Hi Rasika,


I noticed that all the time AP has reachability to the controller. Both AP and user DHCP pools has been configured on distribution layer switches on each branches.


Every time that I configure a new SSID I have to give a power reboot for all APs manually.


Thanks,

Charith

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