AP CAP2602 unable to join WLC 5508 ver 7.6.130.0

bvj197222 · ‎04-28-2015

The AP keeps sending dhcp release/renew to the switch, I'm enclosing debug ip dhcp and debug udp. I have another AP on the same location that Works fine (LAP1131), and I have several other CAP206 on the WLC on other locations.

The dhcp debug shows that the AP is sending a dhcp release to the dhcp-Scope (local on the server). The configuration is identical to other sites, and I have no idea why the AP won't join the Controller.

The dhcp Scope defintion;

ip dhcp pool apmgmt
   network x.x.31.0 255.255.255.0
   default-router x.x.31.1
   option 43 ip x.x.50.10 x.x.50.10

The port has this definition;

description WIFI AP
switchport trunk encapsulation dot1q
switchport trunk native vlan 500
switchport mode trunk

The vlan 500;

description BACKBONE
ip address x.x.31.1 255.255.255.0
ip helper-address x.x.50.10
ip helper-address b.b.50.10

UDP forwarding;

ip forward-protocol udp 12222
ip forward-protocol udp 12223
ip forward-protocol udp 12221

Any other debug-commands I can try to find out what's wrong? There's no point in debugging on the WLC as the AP never get's thru. There's an 1131 on that location already Connected to the WLC.

Leo Laohoo · ‎04-28-2015

Post the complete output to the following commands:

1. WLC: sh sysinfo;

2. WLC: sh time;

3. AP: sh version; and

4. AP: sh ip interface brief

Leo Laohoo · ‎04-28-2015

:)

bvj197222 · ‎04-28-2015

(Cisco Controller) >show sysinfo

Manufacturer's Name.............................. Cisco Systems Inc.
Product Name..................................... Cisco Controller
Product Version.................................. 7.6.130.0
Bootloader Version............................... 1.0.1
Field Recovery Image Version..................... 6.0.182.0
Firmware Version................................. FPGA 1.3, Env 1.6, USB console 1.27
Build Type....................................... DATA + WPS

System Name...................................... AASWLC01
System Location..................................
System Contact...................................
System ObjectID.................................. 1.3.6.1.4.1.9.1.1069
Redundancy Mode.................................. Disabled
IP Address....................................... 172.18.50.10
Last Reset....................................... Software reset
System Up Time................................... 67 days 22 hrs 19 mins 14 secs
System Timezone Location......................... (GMT +1:00) Amsterdam, Berlin, Rome, Vienna
System Stats Realtime Interval................... 5
System Stats Normal Interval..................... 180

Configured Country............................... NO - Norway
Operating Environment............................ Commercial (0 to 40 C)

--More-- or (q)uit
Internal Temp Alarm Limits....................... 0 to 65 C
Internal Temperature............................. +36 C
External Temperature............................. +26 C
Fan Status....................................... OK

State of 802.11b Network......................... Enabled
State of 802.11a Network......................... Enabled
Number of WLANs.................................. 3
Number of Active Clients......................... 132

Burned-in MAC Address............................ 00:07:7D:C0:4D:A0
Power Supply 1................................... Present, OK
Power Supply 2................................... Absent
Maximum number of APs supported.................. 100

(Cisco Controller) >show time

Time............................................. Tue Apr 28 12:30:15 2015

Timezone delta................................... 0:0
Timezone location................................ (GMT +1:00) Amsterdam, Berlin, Rome, Vienna

NTP Servers
NTP Polling Interval......................... 3600

     Index     NTP Key Index                  NTP Server                  NTP Msg Auth Status
    ------- ----------------------------------------------------------------------------------
       1              0                                   10.50.0.1       AUTH DISABLED

Time is in synch.

AP6412.250b.2406>sh version
Cisco IOS Software, C2600 Software (AP3G2-RCVK9W8-M), Version 15.2(4)JB4, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2014 by Cisco Systems, Inc.
Compiled Thu 06-Mar-14 10:46 by prod_rel_team

ROM: Bootstrap program is C2600 boot loader
BOOTLDR: C2600 Boot Loader (AP3G2-BOOT-M) LoaderVersion 12.4(25e)JAY, RELEASE SOFTWARE (fc1)

AP6412.250b.2406 uptime is 1 hour, 9 minutes
System returned to ROM by power-on
System image file is "flash:/ap3g2-rcvk9w8-mx/ap3g2-rcvk9w8-xx"
Last reload reason:

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
export@cisco.com.

cisco AIR-CAP2602I-E-K9 (PowerPC) processor (revision A0) with 204790K/57344K bytes of memory.
Processor board ID FCZ1825U1LF
PowerPC CPU at 800MHz, revision number 0x2151
Last reset from power-on
LWAPP image version 7.6.100.0
1 Gigabit Ethernet interface

32K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: 64:12:25:0B:24:06
Part Number                          : 73-14588-03
PCA Assembly Number                  : 800-37899-01
PCA Revision Number                  : B0
PCB Serial Number                    : FOC18157QEB
Top Assembly Part Number             : 800-38356-01
Top Assembly Serial Number           : FCZ1825U1LF
Top Revision Number                  : A0
Product/Model Number                 : AIR-CAP2602I-E-K9

Configuration register is 0xF

AP6412.250b.2406>sh ip interfa
AP6412.250b.2406>sh ip interface brief
Interface                  IP-Address      OK? Method Status                Protocol
BVI1                       10.83.31.195    YES DHCP   up                    up
GigabitEthernet0           unassigned      NO unset up                    up
GigabitEthernet0.1         unassigned      YES unset up                    up

bvj197222 · ‎04-28-2015

What I don't understand is why the AP keeps on sending a DHCPRELEASE;

Apr 28 11:29:10.169: DHCPD: DHCPRELEASE message received from client 0164.1225.0b24.06 (10.83.31.133).
Apr 28 11:29:10.169: DHCPD: Sending notification of TERMINATION:

The AP gets a New IP-address, then the minute later sends a DHCPRELASE and gets a New address. This process is looping.

The local AP then tries to contact the WLC's at Our headquarter on udp 12221 and 12223, which we are forwarding. There is no firewall stopping the traffic, we have verified that.

bvj197222 · ‎04-29-2015

Case solved, the 2600 use udp port 5246 and 5247. Strange I didn't see it on the udp debug or at the firewall.