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Beginner

Does anyone have an idea on

Does anyone have an idea on how to proceed troubleshooting this problem?

Best regards

Participant

Re: Does anyone have an idea on

So I found a solution to this problem - at least the problem we were having.

 

Injector : AIR-PWERINJ6

Accesspoint : AIR-AP2802I-E-K9

WLC 2504 Software : 8.3.122.0 (note we upgraded this to 8.5.103.0)

 

The issue was that the power negioation packets from the switch were overriding the injector, resulting in only 15.4W being supplied and the Annantae never being powered on due to low power.

 

A simple, quick solution, was to disconnect the 'data' port of the injector and reset the injector with only the AP connected.

Once the light changes from orange to green on the connector, connect the data uplink to the switch.

 

The AP then powers up as normal. - NOTE - if the light stays orange - it wont work.

 

This is a simple fix to confirm the problem, however a power outage will cause the problem to re-appear

 

So to properly fix the problem  - disable PoE on that port on the switch

 

 

Int Gig 1/0/5

shut

switchport

power inline never

no shut

end

 

wr

 

Once PoE is disabled on the port the injector works no matter which way you power up.

 

As part of our troubleshooting we upgraded to 8.5.103.0 - but I dont think this is necessary.

But im not going to downgrade to test it !!

 

Hope that works for you !

 

James

 

 

 

 

 

 

 

Participant

Re: Does anyone have an idea on

Update

 

We had to Downgrade the Controller to 8.3.122.0

This was due to a SHA1 issue / Certificates

This issue prevented our 4 X Aironet 1142N from working

 

All working now !

Highlighted
Beginner

Re: Does anyone have an idea on

James,

 

Your suggestions work perfectly. I thought I had tried them but not in the exact sequence you noted. The POE negotiation confusion makes sense.

 

Thanks!

Hall of Fame Community Legend

Re: Using AP2802I with POE-injector, Fails to bring up radios due to "not enough POE power"

Please post the complete output to the AP command "sh inventory".  I want to see the manufacturing date of the AP.  The AP could, potentially, be part of a bad batch. 

Read THIS.

Beginner

Re: Using AP2802I with POE-injector, Fails to bring up radios due to "not enough POE power"

Hi guys,

 

I am having the same problem with LLDP negotiations failing but the 3802i is connecting to a Nokia ONT which is capable of delivering 30W. The after the negotiations fail, the AP defaults to medium power 802.3af.

 

Does anyone know if it is possible to change the default behaviour to use 802.3at instead?

 

Thanks

Beginner

Re: Using AP2802I with POE-injector, Fails to bring up radios due to "not enough POE power"

I had this problem today using POE+ injectors from fs.com. I was able to get around it by disabling CDP and LLDP on the switchport the AP was plugged into before plugging in the AP.  Note you don't have to disable CDP/LLDP on the AP or on the entire switchI itself, just the port the AP is plugged into.  If the AP is plugged in prior and negotiates power @ 15.4 watts, you will have to physically reset it.  Resetting it from the controller doesn't seem to force the AP to negotiate power again.  Was worried about it too cause we have a lot of these we have to get stood up over the next couple of weeks and have to use some of these POE injectors in places we have older switches.

Beginner

Re: Using AP2802I with POE-injector, Fails to bring up radios due to "not enough POE power"

Hi All,

 

I was having the same issue and was getting low power over POE, enabled the cdp advertisement-v2 at switch where APs were connected and it started to drawing the full power ,fixed the issue.

 

sw1(config)#cdp advertise-v2

 

sw1(config)#cdp advertise-v2

sw1#show power inline

able     Used     Remaining

ts)     (Watts)    (Watts)

----   --------   ---------

0.0      499.4      1300.6

n  Oper       Power   Device              Class Max

              (Watts)                            

-- ---------- ------- ------------------- ----- ----

   off        0.0     n/a                 n/a   60.0

   off        0.0     n/a                 n/a   60.0

   off        0.0     n/a                 n/a   60.0

   off        0.0     n/a                 n/a   60.0

   off        0.0     n/a                 n/a   60.0

   off        0.0     n/a                 n/a   60.0

   off        0.0     n/a                 n/a   60.0

   off        0.0     n/a                 n/a   60.0

   on         15.4    AIR-AP3802I-E-K9    4     60.0

   on         30.0    AIR-AP3802I-E-K9    4     60.0

   on         30.0    AIR-AP3802I-E-K9    4     60.0

   on         15.4    AIR-AP3802I-E-K9    4     60.0

   on         30.0    AIR-AP3802I-E-K9    4     60.0

   on         30.0    AIR-AP3802I-E-K9    4     60.0

   on         30.0    AIR-AP3802I-E-K9    4     60.0

   on         30.0    AIR-AP3802I-E-K9    4     60.0

   on         30.0    AIR-AP3802I-E-K9    4     60.0

   on         15.4    AIR-AP3802I-E-K9    4     60.0

   on         30.0    AIR-AP3802I-E-K9    4     60.0

   on         15.4    AIR-AP3802I-E-K9    4     60.0

 

 Thanks,

Aftab Alam

Beginner

Re: Using AP2802I with POE-injector, Fails to bring up radios due to "not enough POE power"

I had this problem looking for compatible inexpensive 3rd party POE+ injectors and POE+ switches, until I discovered:

• Trendnet TPE-115GI POE+ injector

• Zyxel GS1900 POE+ switches 

 

These work fine with the AP2802i, hope this saves some of you time and headache!

 

Certain other vendors with this issue listened to feedback and added an option in the GUI to select the power source type manually, Cisco might take note.

 

VIP Advocate

Re: Using AP2802I with POE-injector, Fails to bring up radios due to "not enough POE power"

While we are resurrecting the old thread, one other thing. If you attach the AP to an old Switch with offers PoE 802.11af, you must turn it off on the switch. Otherwise the AP might negotiate PoE with the switch, which tells him he will only get 15.4 W, which will cause the AP to shutdown it's radios.
Hall of Fame Community Legend

Re: Using AP2802I with POE-injector, Fails to bring up radios due to "not enough POE power"

The manufacturer of Cisco-branded power injector is Phihong USA.

Everyone's tags (1)
Beginner

Re: Using AP2802I with POE-injector, Fails to bring up radios due to "not enough POE power"

As an update to this problem, my company is deploying a bunch of 2802i access points and I have been doing some testing between Cisco POE switches and PowerDsine POE injectors.  It seems so far that 2802i V03 access points work fine on the 9000 series PowerDsine POE injectors (802.3at) but V01 and V02 do not.  Have not tried to confirm this with Cisco support but that is what I have so far.  Running 8.3.150.0 on the controller.

 

Oddly enough, the V01 and V02 seem to come up full power on the single port un-managed PowerDsine but not on the managed multi-port PowerDsine POE injectors.

VIP Advocate

Re: Using AP2802I with POE-injector, Fails to bring up radios due to "not enough POE power"

Thanks for testing. That really sound a case for TAC. You probably can/should replace all your V01/V02 models.
Beginner

Re: Using AP2802I with POE-injector, Fails to bring up radios due to "not enough POE power"

Luckily for us, it is not too much of a problem.  Out numbers of V01/V02 access points were low relative to the number of 2802i we bought.  We had some buildings with 3560X POE switches in them.  The V01/V02 access points work fine with them.

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