Hi,
Can Someone help me on the Issue in the 2800 Access points which is integrated with 5520 controller.
All AP's in the WLC randomly re-joining with the controller and giving the below error in the AP logs. Below logs are repeating many times in a day and getting alarm for re-joining. Issue in both Flex and local mode AP's.
WLC version : 8.5.131.0
Aug 21 11:06:43 kernel: [*08/21/2018 11:06:43.8012] Warning, unencrypted data keepalive failed
Aug 21 11:06:43 kernel: [*08/21/2018 11:06:43.8013] Failed to receive data keepalive
Aug 21 11:06:43 kernel: [*08/21/2018 11:06:43.8013]
Aug 21 11:06:43 kernel: [*08/21/2018 11:06:43.8013] Lost connection to the controller, going to restart CAPWAP...
Aug 21 11:06:43 kernel: [*08/21/2018 11:06:43.8013]
Aug 21 11:06:43 kernel: [*08/21/2018 11:06:43.8013] Restarting CAPWAP State Machine.
Aug 21 11:06:43 kernel: [*08/21/2018 11:06:43.9069]
Aug 21 11:06:43 kernel: [*08/21/2018 11:06:43.9069] CAPWAP State: DTLS Teardown
Aug 21 11:06:44 NCI: CLEANAIR: Slot 0 CAPWAP down
Aug 21 11:06:44 NCI: I0: shutdownNci
Aug 21 11:06:44 NCI: CLEANAIR: Slot 1 CAPWAP down
Aug 21 11:06:44 NCI: I1: shutdownNci
Aug 21 11:06:44 kernel: [*08/21/2018 11:06:44.9164] Dropping dtls packet since session is not established. Peer 10.130.208.101-
5246, Local 10.130.20.71-5272, conn (nil)
Aug 21 11:06:44 kernel: [*08/21/2018 11:06:44.9165] Dropping dtls packet since session is not established. Peer 10.1.1.1.-
5246, Local 10.130.20.71-5272, conn (nil)
Aug 21 11:06:49 kernel: [*08/21/2018 11:06:49.6079]
Aug 21 11:06:49 kernel: [*08/21/2018 11:06:49.6079] CAPWAP State: Discovery
Aug 21 11:06:49 kernel: [*08/21/2018 11:06:49.6103] Discovery Request sent to 10.1.1.1, discovery type STATIC_CONFIG(1)
Aug 21 11:06:49 kernel: [*08/21/2018 11:06:49.6105] IP DNS query for CISCO-CAPWAP-CONTROLLER
Aug 21 11:06:49 kernel: [*08/21/2018 11:06:49.6128] DNS resolved CISCO-CAPWAP-CONTROLLER
Aug 21 11:06:49 kernel: [*08/21/2018 11:06:49.6128] DNS discover IP addr: 10.1..1.1
Aug 21 11:06:49 kernel: [*08/21/2018 11:06:49.6157] Discovery Request sent to 10.1.1.1, discovery type STATIC_CONFIG(1)
Aug 21 11:06:49 kernel: [*08/21/2018 11:06:49.6168] Discovery Request sent to 255.255.255.255, discovery type UNKNOWN(0)
Aug 21 11:06:49 kernel: [*08/21/2018 11:06:49.6293] Discovery Response from 10.1.1.1
Aug 21 11:06:49 kernel: [*08/21/2018 11:06:49.6377] Discovery Response from 10.1.1.1
Aug 21 11:06:59 kernel: [*08/21/2018 11:06:59.0000]
Aug 21 11:06:59 kernel: [*08/21/2018 11:06:59.0000] CAPWAP State: DTLS Setup
Aug 21 11:06:59 kernel: [*08/21/2018 11:06:59.7361]
Aug 21 11:06:59 kernel: [*08/21/2018 11:06:59.7361] CAPWAP State: Join
Aug 21 11:06:59 kernel: [*08/21/2018 11:06:59.7390] Sending Join request to 10.1.1.1 through port 5272
Aug 21 11:06:59 kernel: [*08/21/2018 11:06:59.7611] Join Response from 10.1.1.1
Aug 21 11:06:59 kernel: [*08/21/2018 11:06:59.8475] HW CAPWAP tunnel is ADDED
Aug 21 11:07:00 kernel: [*08/21/2018 11:07:00.8892]
Aug 21 11:07:00 kernel: [*08/21/2018 11:07:00.8892] CAPWAP State: Image Data
Aug 21 11:07:00 kernel: [*08/21/2018 11:07:00.9262] do NO_UPGRADE, part1 is active part
Aug 21 11:07:00 kernel: [*08/21/2018 11:07:00.9300]
Aug 21 11:07:00 kernel: [*08/21/2018 11:07:00.9300] CAPWAP State: Configure
Aug 21 11:07:00 kernel: [*08/21/2018 11:07:00.9322] DOT11_CFG[0] Radio Mode is changed from FlexConnect to FlexConnect
Aug 21 11:07:00 kernel: [*08/21/2018 11:07:00.9330] DOT11_CFG[1] Radio Mode is changed from FlexConnect to FlexConnect
Aug 21 11:07:01 kernel: [*08/21/2018 11:07:01.2748] CAPWAP HW tunnel params changed, DELETING the existing
Aug 21 11:07:02 kernel: [*08/21/2018 11:07:02.3321] HW CAPWAP tunnel is ADDED
Aug 21 11:07:03 kernel: [*08/21/2018 11:07:03.5692] Discarding msg CAPWAP_WTP_EVENT_REQUEST(type 9) in CAPWAP state: Configure(
8).
Aug 21 11:07:03 kernel: [*08/21/2018 11:07:03.5693] Discarding msg CAPWAP_WTP_EVENT_REQUEST(type 9) in CAPWAP state: Configure(
8).
Aug 21 11:07:03 kernel: [*08/21/2018 11:07:03.5693] Discarding msg CAPWAP_WTP_EVENT_REQUEST(type 9) in CAPWAP state: Configure(
8).
Aug 21 11:07:03 kernel: [*08/21/2018 11:07:03.5694] Discarding msg CAPWAP_WTP_EVENT_REQUEST(type 9) in CAPWAP state: Configure(
8).
Aug 21 11:07:03 kernel: [*08/21/2018 11:07:03.5694] Discarding msg CAPWAP_WTP_EVENT_REQUEST(type 9) in CAPWAP state: Configure(
8).
Aug 21 11:07:03 kernel: [*08/21/2018 11:07:03.5695] Discarding msg CAPWAP_WTP_EVENT_REQUEST(type 9) in CAPWAP state: Configure(
8).
Aug 21 11:07:03 kernel: [*08/21/2018 11:07:03.5696] Discarding msg CAPWAP_WTP_EVENT_REQUEST(type 9) in CAPWAP state: Configure(
8).
Aug 21 11:07:04 kernel: [*08/21/2018 11:07:04.0322]
Aug 21 11:07:04 kernel: [*08/21/2018 11:07:04.0323] CAPWAP State: Run
Aug 21 11:07:04 kernel: [*08/21/2018 11:07:04.0641] CAPWAP HW tunnel params changed, UPDATING the existing
Aug 21 11:07:05 kernel: [*08/21/2018 11:07:05.1593] AP has joined controller WLC1
Aug 21 11:07:05 kernel: [*08/21/2018 11:07:05.1722] Flexconnect Switching to Connected Mode!
Aug 21 11:07:06 syslog: Password for xxx changed
Aug 21 11:07:06 kernel: [*08/21/2018 11:07:06.0844] Password for xx changed
Aug 21 11:07:06 kernel: [*08/21/2018 11:07:06.9100] save_on_failure is set to 1
Aug 21 11:07:06 kernel: [*08/21/2018 11:07:06.9103] save_on_failure is set to 1
Aug 21 11:07:07 root: SYS-COND: Retrigger fair condition, 6 power
Aug 21 11:07:34 kernel: [*08/21/2018 11:07:34.1928] set cleanair [slot0][band0] enabled
Aug 21 11:07:34 NCI: I0: openSensor(slot=0)
Aug 21 11:07:34 kernel: [*08/21/2018 11:07:34.2123] set cleanair [slot0][band1] enabled
Aug 21 11:07:34 kernel: [*08/21/2018 11:07:34.2318] set cleanair [slot1][band1] enabled
Aug 21 11:07:35 NCI: I0: SensorApp=1.15.4
Aug 21 11:07:35 NCI: I0: SensorHdw=1.2.3.0
Aug 21 11:07:35 NCI: I0: Hardware Radio Band = [4890, 5935] MHz, BW=150625
Aug 21 11:07:35 NCI: I0: Hardware Radio Band = [2400, 2500] MHz, BW=150625
Aug 21 11:07:35 NCI: slot=0 mode=2 chanCnt=1 cw=1
Aug 21 11:07:35 NCI: chans: 36 0 0 0 0 0 0 0 0 0 0
Aug 21 11:07:35 NCI: I0: channel map channels: in=1 cloned=1
Aug 21 11:07:35 NCI: I0: Requesting MonBand [5180, 5180] bw=20MHz/0 ant=0xbc
Aug 21 11:07:35 NCI: I0: Monitoring (cf=5180, span=20), RadioUsage=3%
Aug 21 11:07:35 NCI: I0: dwell=20000us, update=1000ms, resBW=78126
Aug 21 11:07:35 NCI: CLEANAIR: Slot 0 enabled
Aug 21 11:07:35 NCI: I1: openSensor(slot=1)
Aug 21 11:07:36 NCI: I1: SensorApp=1.15.4
Aug 21 11:07:36 NCI: I1: SensorHdw=1.2.3.0
Aug 21 11:07:36 NCI: I1: Hardware Radio Band = [4890, 5935] MHz, BW=150625
Aug 21 11:07:36 NCI: slot=1 mode=2 chanCnt=1 cw=1
