1252 status blinks red,green,blue

Unanswered Question
Nov 6th, 2009

Hi,

I'we connected a Cisco 1252 accesspoint to a 802.3af switch, 15.4w.

And it blinks red, green, blue on the status.


The accesspoint is autonomous using latest c1250-k9w7-tar.124-21a.JA1. 5Ghz radio is off/disabled.

but im still getting this in the logs


"Limited(1x3 MIMO) radio functionality due to insufficient inline power. To get full functionality use enhanced PoE switches, power injectors or power supply."

If i physically remove the 5Ghz radio the alarms go away and also the error message about mimo 1x3.


Is there a way to disable the 5ghz radio completeley through software?


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dancampb Fri, 11/06/2009 - 05:27

You just need to shutdown one of the radios, save the config, and reboot the AP and you should be able to get full MCS rates with 802.3af power. When I tested this in my lab I didn't get the low power warning. They key is you have to reboot the AP after disabling the radio.

Marcus Johansson Fri, 11/06/2009 - 06:20

Hi,

The 5Ghz rasio is already shutdown.


Any other idéas?



Current configuration : 1657 bytes

!

version 12.4

no service pad

service timestamps debug datetime msec

service timestamps log datetime msec

service password-encryption

!

hostname ap

!

enable secret 5 $1$XIx.$a9uUCWpvrJHHW60CT/VgE/

!

no aaa new-model

!

!

dot11 syslog

!

dot11 ssid TESTWLAN

authentication open

guest-mode

!

power inline negotiation prestandard source

!

!

username Cisco password 7 072C285F4D06

!

!

bridge irb

!

!

interface Dot11Radio0

no ip address

no ip route-cache

!

ssid TESTWLAN

!

antenna gain 0

beamform ofdm

speed basic-1.0 2.0 5.5 11.0 6.0 9.0 12.0 18.0 24.0 36.0 48.0 54.0 m0. m1. m2. m3. m4. m5. m6. m7. m8. m9. m10. m11. m12. m13. m14. m15.

station-role root

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

shutdown

!

ssid TESTWLAN

!

antenna gain 0

no dfs band block

channel dfs

station-role root

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 GigabitEthernet0

no ip address

no ip route-cache

duplex auto

speed auto

bridge-group 1

no bridge-group 1 source-learning

bridge-group 1 spanning-disabled

!

interface BVI1

ip address 192.168.1.1 255.255.255.0

no ip route-cache

!

ip http server

no ip http secure-server

ip http help-path http://www.cisco.com/warp/public/779/smbiz/prodconfig/help/eag

bridge 1 route ip

!

!

!

line con 0

line vty 0 4

login local

!

end

dennischolmes Fri, 11/06/2009 - 09:54

Physically remove the 5ghz module. Sometimes the backplane of the AP doesn't see the admin down on the radio.

Marcus Johansson Fri, 11/06/2009 - 11:13

Yes, if i remove the 5ghz radio, it works fine!

BUT this can't be the solution??? -it's just silly that you can't completely disable the radio via software.


dennischolmes Fri, 11/06/2009 - 11:16

It is the solution...lol. You can order a blank to fill in sthe spot. Cisco will SELL it to you. hehehehehe

Marcus Johansson Fri, 11/06/2009 - 11:25

O my god! -Is this what the cisco technicians came up with?


Remove half of the accesspoint, mount the remaining pieces on the wall and it may work if you're lucky.


Couldn't they just added a on/off switch!

Marcus Johansson Fri, 11/06/2009 - 12:20

Found this on the cisco site...


http://www.cisco.com/en/US/docs/wireless/access_point/1250/installation/guide/125h_c1.html


Power Sources

The access point can receive power from a 1250 series DC power module or from inline power using the Ethernet cable. The access point supports the IEEE 802.3af inline power standard and Cisco CDP Power Negotiation. Using inline power, you do not need to run a power cord to the access point because power is supplied over the Ethernet cable.


The access point supports the following power sources:


•Cisco Aironet 1250 series DC power module (AIR-PWR-SPLY1)


•Inline power:


-Cisco Aironet 1250 series power injector (AIR-PWRINJ4)


-IEEE 802.3af power source (access point with only one radio module installed)


dennischolmes Fri, 11/06/2009 - 13:25

LOL... See I told you!!! Its because the unit is modular that it requires 802.3at. Notice the T. LOL Now give me my 5 points for solving your problem!! ;) just kidding. Good luck man.

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