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Community Member

AP1240 AG- radio1 cannot associate; no response

HARDWARE/ISSUE: AIRONET AP1240 which has a 2.4 GHz/ 5 GHz radios and is configured to be used as a access point for radio0 and non-root bridge for radio1 using Right instead of Diversity as its primary connections for the radios, but it would not allow our PDA sytems to connect to the internet.

Troubleshooting: I've checked the IOS, configuration, and its security configurations and none of these configurations have changed from when dot11 radio1 was still working.  I checked the radio channel and the AP is set to a specific radio channel that would not interfere with the rest of the AP's within its group.  I checked all physical hardware(cables and antennas) attached to the AP and nothing seems to have changed.  After going through these steps, I replugged it and I was still unable to connect to the internet.

What could be the problem when I receive this message in the event log? Dot11 radio1 cannot associate; no response.

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Gold

Re: AP1240 AG- radio1 cannot associate; no response

Can you post the "sh ip interface brief"?

12 REPLIES
Hall of Fame Super Gold

Re: AP1240 AG- radio1 cannot associate; no response

Can you post the "sh ip interface brief"?

Community Member

Re: AP1240 AG- radio1 cannot associate; no response

IP interface:

Interface                  IP-Address         OK? Method Status                Protocol
BVI1                       10.120.220.74      YES NVRAM  up                     up

Dot11Radio0                unassigned      YES NVRAM  up                    up

Dot11Radio1                unassigned      YES NVRAM  reset                down

FastEthernet0              unassigned      YES NVRAM  up                    down

Hall of Fame Super Gold

Re: AP1240 AG- radio1 cannot associate; no response

Dot11Radio1                unassigned      YES NVRAM  reset                down

Try reloading the AP and do a "sh log".  This will tell you why Radio1 is on "reset".

Community Member

Re: AP1240 AG- radio1 cannot associate; no response

I don't understand what the problem could be.  I see that when Interface BVI1 and its line protocol changes its state to up, Radio1 cannot associate.

I'm not sure what I need to do; should I disable the Ethernet in order for Radio1 to change its state to up?

Here's the Log:

Log Buffer (4096 bytes):                      

*Mar  1 00:00:05.109: %SOAP_FIPS-2-SELF_TEST_IOS_SUCCESS: IOS crypto FIPS self t                                                                               
est passed         
*Mar  1 00:00:05.452: %LINK-5-CHANGED: Interface Dot11Radio0, changed state to r                                                                               
eset   
*Mar  1 00:00:06.388: %SOAP_FIPS-2-SELF_TEST_RAD_SUCCESS: RADIO crypto FIPS self                                                                               
test passed on interface Dot11Radio 0                                     
*Mar  1 00:00:06.739: %LINK-5-CHANGED: Interface Dot11Radio1, changed state to r                                                                               
eset   
*Mar  1 00:00:07.752: %SOAP_FIPS-2-SELF_TEST_RAD_SUCCESS: RADIO crypto FIPS self                                                                               
test passed on interface Dot11Radio 1                                     
*Mar  1 00:00:09.871: %SYS-6-LOGGERSTART: Logger process started                                                               
*Mar  1 00:00:09.873: %LINK-3-UPDOWN: Interface FastEthernet0, changed state to                                                                              
up 
*Mar  1 00:00:10.988: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthern                                                                               
et0, changed state to down                         
*Mar  1 00:00:11.387: %SYS-5-CONFIG_I: Configured from                                                     
*Mar  1 00:00:11.388: %SYS-5-RESTART: System restarted --                                                        
Cisco IOS Software, C1240 Software (C1240-K9W7-M), Version 12.3(8)JEA3, RELEASE                                                                              
SOFTWARE (fc2)             
Technical Support: http://www.cisco.com/techsupport                            
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Wed 21-Nov-07 13:59 by ccai
*Mar  1 00:00:11.388: %SNMP-5-COLDSTART: SNMP agent on host VPC_AP_YARD_4 is und
ergoing a cold start
*Mar  1 00:00:11.403: %CDP_PD-4-POWER_OK: Full power - AC_ADAPTOR inline power s
ource
*Mar  1 00:00:11.472: %LINK-3-UPDOWN: Interface Dot11Radio0, changed stInterface Dot11Radio1, cannot associa
te: No Response
ate to up

*Mar  1 00:00:12.403: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio
1, changed state to down
*Mar  1 00:00:12.403: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio
0, changed state to up
*Mar  1 00:00:13.472: %LINK-3-UPDOWN: Interface BVI1, changed state to down
*Mar  1 00:00:18.789: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthern
et0, changed state to up
*Mar  1 00:00:20.789: %LINK-3-UPDOWN: Interface BVI1, changed state to up
*Mar  1 00:00:21.789: %LINEPROTO-5-UPDOWN: Line protocol on Interface BVI1, chan
ged state to up
*Mar  1 00:00:22.433: %DOT11-4-CANT_ASSOC: *Mar  1 00:01:37.404: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthern
et0, changed state to down

Hall of Fame Super Gold

Re: AP1240 AG- radio1 cannot associate; no response

Can you post the config of your AP?

Community Member

Re: AP1240 AG- radio1 cannot associate; no response

Current configuration : 2313 bytes
!
version 12.3
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname VPC_AP_YARD_4
!
enable secret 5 $1$p6f1$cLG4D2c1WJFZXFM47VCbo/
!
ip subnet-zero
!
!
no aaa new-model
!
dot11 ssid VPC-LOT-01
   authentication open
   authentication key-management wpa
   wpa-psk ascii 7 11261A0B421A5A290B003D747F3C17230A0520553257706846673B571C300

E0965547B0351040D12080E4D293D320203251009735B63383D5C43175A235D2932
!
dot11 ssid VPC_PDA
   authentication open
   authentication key-management wpa
   wpa-psk ascii 7 06101F22455A4828242D
!
power inline negotiation prestandard source
!
!
username mlydick privilege 15 password 7 15561C0514252F767B671607
username glovisadmin privilege 15 password 7 01140A0B4D02152F7115
!
bridge irb
!
!
interface Dot11Radio0
no ip address
no ip route-cache
!
encryption mode ciphers aes-ccm
!
ssid VPC_PDA
!
speed basic-1.0 basic-2.0 basic-5.5 6.0 9.0 basic-11.0 12.0 18.0 24.0 36.0 48.0

channel 2412
fragment-threshold 1024
station-role root
antenna receive right
antenna transmit right
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
bridge-group 1 spanning-disabled
!
interface Dot11Radio1
no ip address
no ip route-cache
!
encryption mode ciphers tkip
!
ssid VPC-LOT-01
!
speed basic-6.0 9.0 basic-12.0 18.0 basic-24.0 36.0 48.0 54.0
fragment-threshold 1024
station-role non-root
payload-encapsulation dot1h
antenna receive right
antenna transmit right
bridge-group 1
bridge-group 1 spanning-disabled
!
interface FastEthernet0
no ip address
no ip route-cache
duplex auto
speed auto
bridge-group 1
bridge-group 1 spanning-disabled
hold-queue 160 in
!
interface BVI1
ip address 10.120.220.74 255.255.255.0
no ip route-cache
!
ip http server
ip http authentication local
no ip http secure-server
ip http help-path http://www.cisco.com/warp/public/779/smbiz/prodconfig/help/eag

!
snmp-server community F50BC-glovis! RO

snmp-server location
snmp-server contact
snmp-server chassis-id AIR-AP1242AG-A-K9
!
control-plane
!
bridge 1 route ip
!
!
!
line con 0
line vty 0 4
login local
!
end

Hall of Fame Super Gold

Re: AP1240 AG- radio1 cannot associate; no response

Why do you have "station-role non-root" and "payload-encapsulation dot1h" in the config for Dot11Radio1?  If Radio1 is to be used as an access point, this should be "station root".

Community Member

Re: AP1240 AG- radio1 cannot associate; no response

Radio0 station role is an access point and Radio1 station role is a non-root bridge.  That's why Radio1 configuration is 'station role non-root', but as for the config 'payload encapsulation dot1h', should this config be 'payload encapsulation dot11' ? 

Community Member

Re: AP1240 AG- radio1 cannot associate; no response

Also, should the config line 'payload encapsulation dot1h' be removed since it does not appear in the radio0 configuration??  What is the significance of this line in radio1?

Hall of Fame Super Gold

Re: AP1240 AG- radio1 cannot associate; no response

Radio1 station role is a non-root bridge.

Now I understand why it's on "reset".  This is because Radio1 can't "see" the other Radio root-bridge.  Maybe there's not enough signal (because you are using 802.11b).  Switch the configuration around, meaning Radio0 is the non-root-bridge and Radio1 is the access-point.  Make sure you switch the remote side too.

Community Member

Re: AP1240 AG- radio1 cannot associate; no response

I don't understand why I should switch both radio configurations? I monitor several AP's that have the same config as the one I'm having issues with.  These AP's radio status are up and they provide adequate wireless signals within their designated area.  I've tried to copy the configuration from these AP's, just changing specific details related to this AP and I still hav e the same issue.  I'm' not sure why switching radio0 and radio1 configs would fix the issue if similar AP's are working fine.  FYI... radio1 has wirless standard 802.11A, not B, and radio0 has wireless standard 802.11G if this helps.

Hall of Fame Super Gold

Re: AP1240 AG- radio1 cannot associate; no response

Radio1 is 802.11a and Radio0 is 802.11b.  In the wireless LAN world, 802.11b or "b" is well known for it's range and penetrating power in the expense of speed.  802.11a or "a" is the direct opposite:  Short range, low penetrating power but high speed.

If you  don't want to switch the configs, then try moving the AP closer.

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