I have configured two AIR-CT5520 Wireless Lan Controller in high availability with software version 8.1.131.0
I have configured Prime Version 3.0 too.
There are 240 AP's model AIR-CAP3702I-E-K9 registered in controllers.
For unknown reason the interface dot11radio0 most AP's are down and up constantly.
In the ap log I can see this:
*Apr 12 07:24:14.687: %LINK-6-UPDOWN: Interface Dot11Radio0, changed state to down
*Apr 12 07:24:14.691: %LINK-5-CHANGED: Interface Dot11Radio0, changed state to reset
*Apr 12 07:24:15.691: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0, changed state to down
*Apr 12 07:24:15.719: %LINK-6-UPDOWN: Interface Dot11Radio0, changed state to up
*Apr 12 07:24:16.767: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0, changed state to up
*Apr 12 07:24:27.643: %CLEANAIR-6-STATE: Slot 0 down
*Apr 12 07:24:44.399: %CLEANAIR-6-STATE: Slot 0 enabled
In the eventlog I can see this:
Apr 12 07:24:05.923: %EVT-5-NTC_PROC: dot11_set_rm_scan:DFS Disable
Process: Dot11 Offchannel PROCESS
Apr 12 07:24:05.923: %EVT-5-NTC_PROC: dot11_set_rm_scan: d1 Channel 36 width 0
Process: Dot11 Offchannel PROCESS
Apr 12 07:24:06.179: %EVT-5-NTC_PROC: mh_driver_off_chnl_complete: to Channel 36 for d1
Process: Dot11 driver
Apr 12 07:24:06.179: %EVT-5-NTC_PROC: dot11_return_serving_channel: d1 Channel 56
Process: Dot11 driver
Apr 12 07:24:06.179: %EVT-5-NTC_PROC: dot11_return_serving_channel:DFS Enable
Process: Dot11 driver
Apr 12 07:24:11.527: %EVT-5-NTC_PROC: dot11_set_rm_scan:DFS Disable
Process: Dot11 Offchannel PROCESS
Apr 12 07:24:11.527: %EVT-5-NTC_PROC: dot11_set_rm_scan: d0 Channel 10 width 0
Process: Dot11 Offchannel PROCESS
Apr 12 07:24:11.603: %EVT-5-NTC_PROC: mh_driver_off_chnl_complete: to Channel 10 for d0
Process: Dot11 driver
Apr 12 07:24:11.603: %EVT-5-NTC_PROC: dot11_return_serving_channel: d0 Channel 1
Process: Dot11 driver
Apr 12 07:24:11.603: %EVT-5-NTC_PROC: dot11_return_serving_channel:DFS Enable
Process: Dot11 driver
Apr 12 07:24:14.595: %EVT-5-NTC: CAPWAP Received SPAM_VENDOR_ID_PAYLOAD
Apr 12 07:24:14.595: %EVT-5-NTC: Vendor subtype PHY_HT_CONTROL_PAYLOAD
Apr 12 07:24:14.595: %EVT-5-CFG: Slot0: channel width 20MHz
Apr 12 07:24:14.595: %EVT-5-CFG: Slot0: tx antenna cck: all, default all
Apr 12 07:24:14.595: %EVT-5-CFG: Slot0: tx antenna ofdm: all, default all
Apr 12 07:24:14.595: %EVT-5-CFG: lwapp_SetCurrentChannel : conf->channel_width = 0,conf->ext_channel = 0, phyHT->CurrentFrequenApr 12 07:24:14.595: %EVT-5-NTC: slot=0 radio state 4 change
Apr 12 07:24:14.611: %EVT-5-CFG: Slot0: tx power level 4
Apr 12 07:24:14.611: %EVT-5-NTC: Radio d0 RST 62 Flags 2060105 BCN 1
Apr 12 07:24:14.611: %EVT-5-CFG: Slot0: set channel 11 OK
Apr 12 07:24:14.611: %EVT-5-CFG: PHY_HT_CONTROL_PAYLOAD : slotId 0, enableHt 0x0F, currentFrequency 11, chanWidth 20
Apr 12 07:24:14.611: %EVT-5-NTC: CAPWAP Received PHY_TX_POWER_PAYLOAD
Apr 12 07:24:14.611: %EVT-5-NTC: slot=0 radio state 4 change
Apr 12 07:24:14.619: %EVT-5-NTC: Changing bssid state: d0 BCN disabled 2060125 0 0 0 0
Apr 12 07:24:14.619: %EVT-5-NTC:
d0 Beacons set state all ds 2060125 0 0 0 0 0
Apr 12 07:24:14.619: %EVT-5-NTC: stopped beacons: d0 disc start 2 2060125 0 0 0 0 0 0
Apr 12 07:24:14.619: %EVT-5-CFG: Slot0: tx power level 4
Apr 12 07:24:14.687: %EVT-5-NTC: slot=0 radio state 0 change
Apr 12 07:24:14.687: %EVT-5-NTC: disabled beacons: d0 disc start 2 2060109 0 0 0 0 0 0
Apr 12 07:24:14.691: %LINK-5-CHANGED: Interface Dot11Radio0, changed state to reset
Apr 12 07:24:15.691: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0, changed state to down
Apr 12 07:24:15.707: %EVT-5-NTC_PROC: dot11_set_temp_channel: d0 Channel 11 channel-width 0
Process: Dot11 driver
Apr 12 07:24:15.707: %EVT-5-NTC: slot=0 radio state 5 change
Apr 12 07:24:15.723: %EVT-5-NTC: slot=0 radio state 4 change
Apr 12 07:24:15.723: %EVT-5-NTC: MC/beacon set state all: d0 BCN enabled
Apr 12 07:24:15.723: %EVT-5-NTC:
d0 Beacons set state all ds 2020105 0 1 0 0 0
Apr 12 07:24:16.675: %EVT-5-NTC: CAPWAP Received PHY_TX_POWER_PAYLOAD
Apr 12 07:24:16.675: %EVT-5-NTC: slot=0 radio state 4 change
Apr 12 07:24:16.687: %EVT-5-CFG: Slot0: tx power level 3
Apr 12 07:24:16.767: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0, changed state to up
I have reboot some of this AP's and I have disabled cdp at some lan interfaces where I have connect the ap's but problem persists.
