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Enthusiast

C2700 AP Not Joinining vWLC

Hello I'm trying to get my AP to join my vWLC and it's not working. I've tried multiple versions of the vWLC with the same behavior. Something is wrong with my AP. It joins for a brief moment then it drops. Can you assist please. I've tried resetting through the mode button but that didn't do it. I'm using 8.3.102 for the controller version

 

I got some messages from the AP while joining.

 

Thanks

1 ACCEPTED SOLUTION

Accepted Solutions
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The AP logs show that the AP is still getting the IP from DHCP server. Probably you missed to to save the static config on the AP (write mem).

and I see that the AP joins the WLC also creates a DTLS tunnel  but for some reason keeps on sending a new Join request to the same WLC even after that. I suspect that there may be something wrong on the WLC side config. Is this the only AP that you have or any other AP is able to associate to this WLC ?

I see this log in the AP:

Mar  3 20:40:18.903: %PARSER-4-BADCFG: Unexpected end of configuration file

It may be normal but I never noticed this log in the AP bootup. So , not sure.

Since, the AP is able to join the WLC once but drops off again, let's try this:

>> Check the config on the WLC once again.

>> Run "debug capwap errors enable" on the WLC during the whole process.

>> Initiate a continuous ping to the AP from the WLC VLAN to make sure that the AP is reachable and it doesn't lose its IP after the association.

 

Cheers,

Manish

View solution in original post

32 REPLIES 32
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Hi

I'd say that the problem may be this:

 

*Mar  3 20:38:41.659: %CAPWAP-3-DHCP_RENEW: Could not discover WLC. Either IP address is not assigned or assigned IP is wrong. Renewing DHCP IP.
*Mar  3 20:38:44.759: %DHCP-6-ADDRESS_ASSIGN: Interface BVI1 assigned DHCP address 10.88.88.11, mask 255.255.255.0, hostname APa89d.2188.3f5c

Double check if the IP address provided by DHCP is correct. The IP is in a different network, then, you need a gateway to get to the WLC.

 

 

-If I helped you somehow, please, rate it as useful.- 

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I'm able to ping the wlc from the AP.

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Going with your information that the AP joins for a brief moment and then drops off , It appears to me that the AP may be losing the IP every now and then. Where is the AP getting IP from ? What is the lease time ? Can u configure a static IP on the AP and also a static entry for the WLC in the AP ? 

 

Cheers,

Manish

Highlighted

It gets them from a win2k12 configured for DHCP. Can you share the commands to hardcode the IPs?

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You can login to the AP console and issue :
AP#capwap ap ip address
AP#lcapwap ap ip default-gateway
AP#lcapwap ap controller ip address
AP#lcapwap ap hostname

But you will have to make sure that this static IP is excluded in the DHCP server. Otherwise , there may be an IP conflict.
Cheers,
Manish
Highlighted

Here's the log after static assignment.

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Hall of Fame Community Legend

Check firewall.
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There's no firewall actually. It's literally one switch with one server running win2k12 and and the WLC running on vmware workstation. The server is in vlan 30(10.30.30.0/24) and the AP is in vlan 88(10.88.88.0/24) where the switch is doing layer 3 routing.
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Hall of Fame Community Legend

Put the AP and the controller in the same VLAN.
Highlighted

Unfortunately that also didn't do it. This time I used a dhcp pool on the switch with the DNS name to resolve the controller and join. The AP resolves the name correctly but not able to join still. What should I try next you think?

Highlighted

The AP logs show that the AP is still getting the IP from DHCP server. Probably you missed to to save the static config on the AP (write mem).

and I see that the AP joins the WLC also creates a DTLS tunnel  but for some reason keeps on sending a new Join request to the same WLC even after that. I suspect that there may be something wrong on the WLC side config. Is this the only AP that you have or any other AP is able to associate to this WLC ?

I see this log in the AP:

Mar  3 20:40:18.903: %PARSER-4-BADCFG: Unexpected end of configuration file

It may be normal but I never noticed this log in the AP bootup. So , not sure.

Since, the AP is able to join the WLC once but drops off again, let's try this:

>> Check the config on the WLC once again.

>> Run "debug capwap errors enable" on the WLC during the whole process.

>> Initiate a continuous ping to the AP from the WLC VLAN to make sure that the AP is reachable and it doesn't lose its IP after the association.

 

Cheers,

Manish

View solution in original post

Highlighted

I finally got it to join. Don't know how. I re-installed the wlc even though I've done that many times but it seems like putting them on the same subnet is what made it work. Thank you all for your assistance on this.
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Hall of Fame Community Legend


@NETAD wrote:
*Mar  3 20:37:56.155: %CAPWAP-5-DHCP_OPTION_43: Controller address 10.30.30.77 obtained through DHCP

Post the complete output to the following commands: 

1.  WLC:  sh sysyinfo; 

2.  WLC:  sh time; and

3.  AP:  sh version

Highlighted

(Cisco Controller) >show sysinfo

Manufacturer's Name.............................. Cisco Systems Inc.
Product Name..................................... Cisco Controller
Product Version.................................. 8.3.102.0
RTOS Version..................................... 8.3.102.0
Bootloader Version............................... 8.3.15.96
Emergency Image Version.......................... 8.3.102.0

OUI File Update Time............................. Sun Sep 07 10:44:07                                                  IST 2014

Build Type....................................... DATA + WPS

System Name...................................... vWLC
System Location..................................
System Contact...................................
System ObjectID.................................. 1.3.6.1.4.1.9.1.163                                                 1
IP Address....................................... 10.30.30.77
IPv6 Address..................................... ::
System Up Time................................... 1 days 22 hrs 31 mi                                                 ns 15 secs
System Timezone Location.........................
System Stats Realtime Interval................... 5
System Stats Normal Interval..................... 180

--More-- or (q)uit

Configured Country............................... US  - United States

State of 802.11b Network......................... Enabled
State of 802.11a Network......................... Enabled
Number of WLANs.................................. 1
Number of Active Clients......................... 0

OUI Classification Failure Count................. 0

Burned-in MAC Address............................ 00:0C:29:36:96:F0
Maximum number of APs supported.................. 200
System Nas-Id....................................
WLC MIC Certificate Types........................ SHA1
Licensing Type................................... RTU
vWLC config...................................... Small

 

 

APa89d.2188.3f5c#sho version
Cisco IOS Software, C2700 Software (AP3G2-K9W8-M), Version 15.3(3)JD, RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Fri 29-Jul-16 04:06 by prod_rel_team

ROM: Bootstrap program is C2700 boot loader
BOOTLDR: C2700 Boot Loader (AP3G2-BOOT-M) LoaderVersion 15.2(4)JB5m, RELEASE SOFTWARE (fc2)

APa89d.2188.3f5c uptime is 4 minutes
System returned to ROM by power-on
System image file is "flash:/ap3g2-k9w8-mx.153-3.JD/ap3g2-k9w8-xx.153-3.JD"
Last reload reason:



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Importers, exporters, distributors and users are responsible for
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to comply with U.S. and local laws, return this product immediately.

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If you require further assistance please contact us by sending email to
export@cisco.com.

cisco AIR-CAP2702I-A-K9 (PowerPC) processor (revision A0) with 376814K/134656K bytes of memory.
Processor board ID FCW1909NL7J
PowerPC CPU at 800Mhz, revision number 0x2151
Last reset from power-on
LWAPP image version 8.3.102.0
1 Gigabit Ethernet interface
2 802.11 Radios

32K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: A8:9D:21:88:3F:5C
Part Number                          : 73-15824-03
PCB Serial Number                    : FOC190753G3
Top Assembly Part Number             : 068-100373-01
Top Assembly Serial Number           : FCW1909NL7J
Top Revision Number                  : A0
Product/Model Number                 : AIR-CAP2702I-A-K9



Configuration register is 0xF

 

 

NTP isn't configured on my controller.

 

 

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