lap 1142N not joining WLC2106

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Feb 10th, 2012
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Hi,


I have a 1142N which does not join the WLC when connected via a 2960 switch. When I connect a different lap 1142N to the same port on the same switch using the same cables, it does join the lap to the WLC. And when I connect the first lap directly to the WLC it also works fine.


Resetting the failing lap does not fix the problem. All software levels on the lap are the same.


Anyone an idea what could be wrong?


Thanks in advance.


Regards

Jeroen

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daviwatk Fri, 02/10/2012 - 14:02
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Can you post the output of the console for the AP that is not working when connected to your 2960 while it boots and attempts to discover?


Please also include the following...

Full model number of the AP that is NOT working.

Full model number of the AP that IS working.

WLC platform and version and configured regulatory domain.


Also, is the AP on the same subnet as the management address of the WLC?  If not, what discovery method are you using?  Option 43, DNS, IP-Helper/IP Port Forwarding?

Leo Laohoo Fri, 02/10/2012 - 14:28
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1.  Can you console into the WAP in question and reboot it?  I would like to see the full bootup process and the JOINing attempt process.


2.  Can you post the output to the commands "sh version" and "sh inventory" from the WAP?


3.  From your WLC, can you post the output to the command "sh sysinfo" please?

5avelsberg Fri, 02/10/2012 - 15:02
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thnx for your support so far.


All the AP's are the same, AIR-LAP1142N-E-K9 v05. I have two AP's which work fine when connected via the 2960 therefore I assume that the switch, wlc, vlan and dhcp configuration is fine.The thirth one is giving me some challenges ;-)


Note: the non working AP is only not working when connected via de 2960, it is working fine when directly connected to the WLC2106.


@David, where can i find the regulatory domain setting?

working AP

NAME: "AP1140", DESCR: "Cisco Aironet 1140 Series (IEEE 802.11n) Access Point"

PID: AIR-LAP1142N-E-K9

   

failing AP

NAME: "AP1140", DESCR: "Cisco Aironet 1140 Series (IEEE 802.11n) Access Point"

PID: AIR-LAP1142N-E-K9


AP manager subnet

192.168.1.0/24


Management subnet

192.168.2.0/24


WLC2106 sysinfo
==================================================================================
(Cisco Controller) >show sysinfo

Manufacturer's Name.............................. Cisco Systems Inc.
Product Name..................................... Cisco Controller
Product Version.................................. 7.0.220.0
RTOS Version..................................... 7.0.220.0
Bootloader Version............................... 4.0.191.0
Emergency Image Version.......................... 6.0.199.4
Build Type....................................... DATA + WPS

System Name...................................... CiscoWLC1
System Location..................................
System Contact...................................
System ObjectID.................................. 1.3.6.1.4.1.9.1.828
IP Address....................................... 192.168.2.2
System Up Time................................... 10 days 0 hrs 31 mins 36 secs
System Timezone Location.........................

Configured Country............................... NL  - Netherlands
Operating Environment............................ Commercial (0 to 40 C)
Internal Temp Alarm Limits....................... 0 to 65 C
Internal Temperature............................. +48 C


--More-- or (q)uit
State of 802.11b Network......................... Enabled
State of 802.11a Network......................... Enabled
Number of WLANs.................................. 2
Number of Active Clients......................... 0

Burned-in MAC Address............................ 70:81:05:AE:F9:C0
Maximum number of APs supported.................. 6


DHCP pool configured on core switch
==================================================================================
ip dhcp pool AP-Pool
   network 192.168.1.0 255.255.255.0
   default-router 192.168.1.254
   dns-server 192.168.1.1
!


Boot info failing WAP
==================================================================================
using  eeprom values

WRDTR,CLKTR: 0x85000800 0x40000000
RQDC ,RFDC : 0x80000037 0x0000020f

using ÿÿÿÿ ddr static values from serial eeprom
ddr init done

Running Normal Memtest...
Passed.
IOS Bootloader - Starting system.
FLASH CHIP:  Numonyx P33
Checking for Over Erased blocks
......................................................................................................................................................................................................................................................
Xmodem file system is available.

DDR values used from system serial eeprom.
WRDTR,CLKTR: 0x85000800, 0x40000000
RQDC, RFDC : 0x80000037, 0x0000020f

PCIE0: link is up.
PCIE0: VC0 is active
PCIE1: link is up.
PCIE1: VC0 is active
PCIEx: initialization done
flashfs[0]: 28 files, 8 directories
flashfs[0]: 0 orphaned files, 0 orphaned directories
......
% Please define a domain-name first.


Press RETURN to get started!


*Mar  1 00:00:08.197: %SOAP_FIPS-2-SELF_TEST_IOS_SUCCESS: IOS crypto FIPS self test passed
*Mar  1 00:00:08.208: *** CRASH_LOG = YES
Security Core found.
Base Ethernet MAC address: 64:9E:F3:B3:5F:88

*Mar  1 00:00:09.787: %SOAP_FIPS-2-SELF_TEST_RAD_SUCCESS: RADIO crypto FIPS self test passed on interface Dot11Radio 0
*Mar  1 00:00:10.359: %SOAP_FIPS-2-SELF_TEST_RAD_SUCCESS: RADIO crypto FIPS self test passed on interface Dot11Radio 1
*Mar  1 00:00:10.393: %LWAPP-3-CLIENTEVENTLOG: Read and initialized AP event log (contains, 215 messages)

*Mar  1 00:00:10.416:  status of voice_diag_test from WLC is false
*Mar  1 00:00:11.459: %LINK-3-UPDOWN: Interface GigabitEthernet0, changed state to up
*Mar  1 00:00:12.536: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0, changed state to up
*Mar  1 00:00:12.573: %SYS-5-RESTART: System restarted --
Cisco IOS Software, C1140 Software (C1140-K9W8-M), Version 12.4(23c)JA3, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2011 by Cisco Systems, Inc.
Compiled Tue 18-Oct-11 14:52 by prod_rel_team
*Mar  1 00:00:12.573: %SNMP-5-COLDSTART: SNMP agent on host AP649e.f3b3.5f88 is undergoing a cold start
*Mar  1 00:11:43.044: %CAPWAP-5-CHANGED: CAPWAP changed state to DISCOVERY
*Mar  1 00:11:43.105: %LINK-5-CHANGED: Interface Dot11Radio1, changed state to reset
*Mar  1 00:11:43.105: %LINK-5-CHANGED: Interface Dot11Radio0, changed state to reset
*Mar  1 00:11:44.106: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio1, changed state to down
*Mar  1 00:11:44.106: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0, changed state to down
*Mar  1 00:11:44.297: %SSH-5-ENABLED: SSH 2.0 has been enabled
*Mar  1 00:11:52.102: %DHCP-6-ADDRESS_ASSIGN: Interface GigabitEthernet0 assigned DHCP address 192.168.1.44, mask 255.255.255.0, hostname AP649e.f3b3.5f88

*Mar  1 00:12:01.917:  status of voice_diag_test from WLC is false
*Mar  1 00:12:01.972: Logging LWAPP message to 255.255.255.255.

*Mar  1 00:12:04.769: %CDP_PD-4-POWER_OK: Full power - NEGOTIATED inline power source
*Mar  1 00:12:04.792: %LINK-3-UPDOWN: Interface Dot11Radio1, changed state to up
*Mar  1 00:12:04.816: %LINK-3-UPDOWN: Interface Dot11Radio0, changed state to up
*Mar  1 00:12:05.776: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio1, changed state to up
*Mar  1 00:12:05.776: %SYS-6-LOGGINGHOST_STARTSTOP: Logging to host 255.255.255.255 started - CLI initiated
*Mar  1 00:12:05.802: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0, changed state to up
Translating "CISCO-CAPWAP-CONTROLLER"...domain server (192.168.1.1)

*Mar  1 00:13:13.006: %CAPWAP-3-DHCP_RENEW: Could not discover WLC using DHCP IP. Renewing DHCP IP.
Not in Bound state.
*Mar  1 00:13:23.524: %CAPWAP-3-ERRORLOG: Invalid event 38 & state 2 combination.
*Mar  1 00:13:23.637: %DHCP-6-ADDRESS_ASSIGN: Interface GigabitEthernet0 assigned DHCP address 192.168.1.45, mask 255.255.255.0, hostname AP649e.f3b3.5f88

Translating "CISCO-CAPWAP-CONTROLLER"...domain server (192.168.1.1)

*Mar  1 00:14:19.511: %CAPWAP-3-DHCP_RENEW: Could not discover WLC using DHCP IP. Renewing DHCP IP.
Not in Bound state.
*Mar  1 00:14:30.030: %CAPWAP-3-ERRORLOG: Invalid event 38 & state 2 combination.
*Mar  1 00:14:30.139: %DHCP-6-ADDRESS_ASSIGN: Interface GigabitEthernet0 assigned DHCP address 192.168.1.46, mask 255.255.255.0, hostname AP649e.f3b3.5f88

Translating "CISCO-CAPWAP-CONTROLLER"...domain server (192.168.1.1)

*Mar  1 00:15:26.013: %CAPWAP-3-DHCP_RENEW: Could not discover WLC using DHCP IP. Renewing DHCP IP.
Not in Bound state.
*Mar  1 00:15:36.532: %CAPWAP-3-ERRORLOG: Invalid event 38 & state 2 combination.
*Mar  1 00:15:36.640: %DHCP-6-ADDRESS_ASSIGN: Interface GigabitEthernet0 assigned DHCP address 192.168.1.47, mask 255.255.255.0, hostname AP649e.f3b3.5f88


Show version failing wap
==================================================================================
Cisco IOS Software, C1140 Software (C1140-K9W8-M), Version 12.4(23c)JA3, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2011 by Cisco Systems, Inc.
Compiled Tue 18-Oct-11 14:52 by prod_rel_team

ROM: Bootstrap program is C1140 boot loader
BOOTLDR: C1140 Boot Loader (C1140-BOOT-M) Version 12.4(23c)JA3, RELEASE SOFTWARE (fc1)

uptime is 6 minutes
System returned to ROM by power-on
System image file is "flash:/c1140-k9w8-mx.124-23c.JA3/c1140-k9w8-mx.124-23c.JA3"


This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
[email protected].

cisco AIR-LAP1142N-E-K9    (PowerPC405ex) processor (revision A0) with 98294K/32768K bytes of memory.
Processor board ID FCZ1548W0GJ
PowerPC405ex CPU at 586Mhz, revision number 0x147E
Last reset from power-on
LWAPP image version 7.0.220.0
1 Gigabit Ethernet interface
2 802.11 Radio(s)

32K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: 64:9E:F3:B3:5F:88
Part Number                          : 73-12836-03
PCA Assembly Number                  : 800-33767-03
PCA Revision Number                  : A0
PCB Serial Number                    : FOC15443W5A
Top Assembly Part Number             : 800-33775-02
Top Assembly Serial Number           : FCZ1548W0GJ
Top Revision Number                  : A0
Product/Model Number                 : AIR-LAP1142N-E-K9  

Configuration register is 0xF


show inventory failing wap
==================================================================================

NAME: "AP1140", DESCR: "Cisco Aironet 1140 Series (IEEE 802.11n) Access Point"
PID: AIR-LAP1142N-E-K9


Message was edited by: Jeroen

Stephen Rodriguez Tue, 02/14/2012 - 12:40
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what happens if you move the AP-manager to the same subnet as the management subnet?


Steve

5avelsberg Tue, 02/14/2012 - 12:51
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Have to check, but i want to keep ap-manager en management separated. Keep in mind that the AP works fine when connected directly to the WLC

Stephen Rodriguez Tue, 02/14/2012 - 12:53
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that's because it's talking directly to the AP manager and not having to traverse the network.  I've seen issues with spliting the IP address.  and it doesn't explain why some work, and this one doesn't.


Steve

5avelsberg Tue, 02/14/2012 - 12:57
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It is recommended by Cisco, according to the manual, to separate those two (ap-manager and management)

George Stefanick Tue, 02/14/2012 - 18:12
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You need to be careful when you read the manuals. They also stated for years to native the managment traffic AND ONLY now in 7x config guide it was corrected to state TAG the managment traffic.


If you have a 4404 with 100 aps then yes and you would have to add an additional ap manager if you used ports instead of lag. Becuase if you used ports its limited to 48 aps per port!


if you LAG it only uses 1 AP manager and if you use a 5508 there is NO ap mangers.


In your case, you have a small controller. No need to complcate things. Keep them on the same subnet.

Leo Laohoo Tue, 02/14/2012 - 12:45
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Maximum number of APs supported.................. 6

Thanks for the output.


How many WAPs are currently JOINED to this WLC?

5avelsberg Tue, 02/14/2012 - 12:55
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Thx all for your assistance so far,


I have 2 working AP's connected to my 2960 switches. The third AP does not want to join when connected to the 2960. Even when I disconnect the other 2, it still doesn't want to join. It only joins when connected directly to the WLC.


br

Jeroen

5avelsberg Thu, 02/16/2012 - 06:55
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Option 43 did the trick.


Note: You must use the management interface of the WLAN controller.



Complete these steps in order to configure DHCP Option 43 for lightweight Cisco Aironet access points in the embedded Cisco IOS DHCP server:

  1. Enter configuration mode at the Cisco IOS CLI.


  2. Create the DHCP pool, which includes the necessary parameters, such as the default router and server name. This is an example DHCP scope:

    ip dhcp pool  network   default-router  dns-server 

  3. Add the Option 43 line with this syntax:

    option 43 hex 

    The hexadecimal string in step 3 is assembled as a sequence of the TLV values for the Option 43 suboption: Type + Length + Value. Type is always the suboption code 0xf1. Length is the number of controller management IP addresses times 4 in hex. Value is the IP address of the controller listed sequentially in hex.

    For example, suppose there are two controllers with management interface IP addresses, 192.168.10.5 and 192.168.10.20. The type is 0xf1. The length is 2 * 4 = 8 = 0x08. The IP addresses translate to c0a80a05 (192.168.10.5) and c0a80a14 (192.168.10.20). When the string is assembled, it yields f108c0a80a05c0a80a14. The Cisco IOS command that is added to the DHCP scope is:

    option 43 hex f108c0a80a05c0a80a14


http://www.cisco.com/en/US/partner/tech/tk722/tk809/technologies_configuration_example09186a00808714fe.shtml

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