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Beginner

Cable reconnected, AP did not join the controller

The AP was operating in Flexconnect mode.

We disconnected and reconnected due to a cable issue connected to the AP.

However, the AP did not join the controller, and the DTLS logs that discover the controller are not displayed in the AP log.

However, in the field, the AP is operating without problems, and I think the AP is operating in Flexconnect mode.

1. Is there a command to check if the AP is operating with Flexconnect without joining the controller?

2. Is there a command to check whether the AP has joined the controller or not?

3. Is there a way to join the AP to the controller in the current situation? (Currently, I switched Flexconnect mode to LOCAL mode.)

3 REPLIES 3
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Beginner

Re: Cable reconnected, AP did not join the controller

After switching from AP to local mode, it was joined to the controller.
It took longer than expected, but the join succeeded.
Highlighted
Cisco Employee

Re: Cable reconnected, AP did not join the controller

@Snika,

The AP might've possibly joined some other controller. However, the 'sh log' output from the AP should've shown the Discovery and Join processes.

The AP will not function without registering on the WLC. Even in flexconnect mode, the AP will only keep the active client sessions up in case the link to the WLC goes down.

 

Command to run on the AP to check what WLC it's registered to is 'show capwap client rcb'

Cheers!

Highlighted
Cisco Employee

Re: Cable reconnected, AP did not join the controller

Hello Snika,

 

Below are the answers to your questions:

 

1. Is there a command to check if the AP is operating with Flexconnect without joining the controller?

 

For this, you need to login to AP through putty using the IP address and then execute the below command.

show capwap reap status  (Shows the status of the FlexConnect access point (connected or standalone).

 

LabAP#show capwap reap status
VLAN - root hwidb:GigabitEthernet0 global BVI:NULL

VlanID BrgGrp Type Routed Active
---------------------------------------------
4114 2 1 yes 1/1
4115 3 2 yes 1/1
4116 4 2 yes 1/1

AP Mode: REAP, Standalone
Radar detected on:

DCA channels present:NO

 

You can also connect your console cable to the console port and will be able to see that on the screen whether the AP is in flex connect mode or local with all the other information. It will show you all the logs on the console screen

 

2. Is there a command to check whether the AP has joined the controller or not?

You can check this in two ways:

 

Login into the controller and check from GUI of the controller, also you can take the putty access of the WLC and execute the below command to check the status of the AP.

 

show capwap client vrcb, it will give you all the information.

 

LabAP#show capwap client rcb
AdminState : ADMIN_ENABLED
SwVer : 8.3.150.0
NumFilledSlots : 2
Name : LabAP
Location : default location
MwarName : CT5508-1
MwarMacAddr : 0a46.4722.0000
MwarHwVer : 0.0.0.0
ApMode : FlexConnect
ApSubMode : Not Configured
Flex-group name : test
OperationState : DISCOVERY
CAPWAP Path MTU : 1485
Link-Encryption (AP) : Disabled
Link-Encryption (MWAR) : Enabled
Prefer-mode : IPv4
LinkAuditing : disabled
AP Rogue Detection Mode : Enabled
AP Tcp MSS Adjust : Enabled
AP Tcp MSS size : 1250
Predownload Status : None
Auto Immune Status : Disabled
RA Guard Status : Disabled
Efficient Upgrade State : Disabled
Efficient Upgrade Role : None
TFTP Server : Disabled
Antenna Band Mode : Unknown
Universal AP Priming mode : Unprimed
802.11bg(0) Radio
ADMIN State = ENABLE [1]
OPER State = UP [2]
CONFIG State = UP [2]
HW State = UP [4]
Radio Mode : H-REAP
GPR Period : 0
Beacon Period : 0
DTIM Period : 0
World Mode : 1
VoceraFix : 0
Dfs peakdetect : 1
Fragmentation Threshold : 0
Current Tx Power Level : 1
Current Channel : 1
Current Bandwidth : 20
802.11a(1) Radio
ADMIN State = ENABLE [1]
OPER State = UP [2]
CONFIG State = UP [2]
HW State = UP [4]
Radio Mode : H-REAP
GPR Period : 0
Beacon Period : 0
DTIM Period : 0
World Mode : 1
VoceraFix : 0
Dfs peakdetect : 1
Fragmentation Threshold : 0
Current Tx Power Level : 1
Current Channel : 104
Current Bandwidth : 20

HYPERLOCATION ADMIN STATE : 0
WLC GATEWAY MAC : 00:00:00:00:00:00
WLC HYPERLOCATION SRC PORT : 0
Remote Machine's IP : 0.0.0.0
LabAP#

 

 

 

The other way is to get the putty access of the Ap and check the show log it will show you all the discovery and joining process or use show controller.

 

3. Is there a way to join the AP to the controller in the current situation? (Currently, I switched Flexconnect mode to LOCAL mode.)

you can always statically make the AP tom join the controller if they are two different subnets.

 

capwap ap primary-base <WLC hostname > <WLC IP>

 

Regards,

Priyanka

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