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EAP225-Outdoor no PoE on TL-SG3424P switch

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EAP225-Outdoor no PoE on TL-SG3424P switch

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EAP225-Outdoor no PoE on TL-SG3424P switch
EAP225-Outdoor no PoE on TL-SG3424P switch
2023-02-21 09:27:42
Model: EAP225-Outdoor  
Hardware Version: V3
Firmware Version: 5.0.7

Hi all,

I have a TP-Link switch TL-SG3424P, which is compatible with 802.3AF/AT.

I have bought a EAP225-Outdoor access point but the PoE does not seems to deliver power.

I have 3 EAP330 access point plugged on this switch and all work fine.

I have tested on another TL switch, a TL-SG108PE, and the EAP225-Outdoor works fine.

 

So, I think something wrong in power delivery from TL-SG3424P to EAP225-Outdoor negotiation.

What is frustrating is both are compliant with 802.3AF/AT.

Maybe something to fine tune on TL-SG3424P but I don't know what.

 

Any idea or suggestion ?

 

Thanks for help.

 

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#1
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11 Reply
Re:EAP225-Outdoor no PoE on TL-SG3424P switch
2023-02-22 08:31:11

Dear @jeff13 ，

 

Thank you so much for taking the time to report the issue to TP-Link community!

 

1. Generally speaking, TL-SG3424P could power EAP225-Outdoor properly.

Have you test the cable between them?

If you use a short Ethernet cable to connect them for testing, it will be more better.

 

2. Does the POE LED lit up when connect EAP225 to TL-SG3424P?

Best Regards! >> Omada EAP Firmware Trial Available Here << >> Get the Latest Omada SDN Controller Releases Here << *Try filtering posts on each forum by Label of [Early Access]*
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#2
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Re:EAP225-Outdoor no PoE on TL-SG3424P switch
2023-02-22 09:24:13

  @Hank21 
Hi, 

 

Have you test the cable between them?

> Yes. i'm sure it's not the cable because if I plug the EAP225 to my other switch TL-SG108PE, it works.

 

If you use a short Ethernet cable to connect them for testing, it will be more better.

> I use a 20cm of length. as mentioned before, it works on TL-SG108PE

 

2. Does the POE LED lit up when connect EAP225 to TL-SG3424P?

> No, the LED does not lit up. But the EAP225 warm a little, and from the TL-SG3424P I can see the plugged EAP225, but the power varies from 0 to 8w, each seconds.

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#3
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Re:EAP225-Outdoor no PoE on TL-SG3424P switch
2023-02-22 14:03:12

  @jeff13 

 

Hi Jeff...sorry to hear about the issues you're having.  I have a number of 225-outdoors on 2008P's and 2210P's and they all work fine (but are running older 5.0.5 firmware if that matters).  I was however wondering if your 3424P has a bad POE switch module?  Most TPLlink POE capable switches are built in blocks of 4 ports, so I suspect each POE control chip can cover 4 ports...and you said you had three 330's running just fine on the 3424.  My question is have you tested the 225 in a known good block of 4 ports (for instance if 330 #1 is plugged into port 3 and is working, then POE should be working on ports 1,2 and 4).  I would be very surprised if there is *ANY* software interaction during the power negotiation...other than maybe 'approve' because I still have power budget or reject because I don't.  That leads me to believe you might have faulty internal components in the switch, or the POE AC supply for the switch is having issues.

 

Curious to get to the bottom of this one!

<< Paying it forward, one juicy problem at a time... >>
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#4
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Re:EAP225-Outdoor no PoE on TL-SG3424P switch
2023-02-22 14:46:21

  @d0ugmac1 

Thanks for reply.

 

I have tested to unplug my EAP330 and replace by the EAP225, same thing. No light.

On the 3424P switch a button alow me to switch form SPEED to POE status.

From POE status, once the EAP225 is plugged, the light is green.

From SPEED status, once the EAP225 is plugged, the light is off.

 

So the switch understand that a PoE device is plugged, but is unable to negociate.

 

I'm not sure the switch has a hard fault on POE, EAP330 are running well and I have a RaspberryPi plugged with DC splitter directly on the 3424P switch.

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#5
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Re:EAP225-Outdoor no PoE on TL-SG3424P switch
2023-02-22 18:22:46

  @jeff13 

 

Are you able to get any logging info off the switch regarding the POE negotiations?  You might have to SSH in as opposed to using the web UI.

<< Paying it forward, one juicy problem at a time... >>
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#6
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Re:EAP225-Outdoor no PoE on TL-SG3424P switch
2023-02-22 18:24:42
could you share ssh commands to execute ?
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#7
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Re:EAP225-Outdoor no PoE on TL-SG3424P switch
2023-02-22 18:46:25 - last edited 2023-02-22 18:58:17

  @jeff13 

 

Actually I think I know what the problem is.  Have you tested the EAP225-outdoor on the SG3424P yet using the cable that came in the box?  I suspect you are using cables you had lying around and those cables might be wired differently than straight through EIA568B (google this for images) ie you are using crossovers or other oddball configs (4wire etc).  I have had zero issue powering my EAP225's using TPlink 2008P and 2210P switches and straight EIA568B cables.

 

The reason for this is that the EAP225-outdoor is non-standard from a POE point of view.  Ethernet provides 4 pairs of wires and 1 or 2 pairs can be used for POE applications.  The problem with the EAP225-outdoor is that it tries to satisfy BOTH passive POE (24V) AND active POE (48V, 802.3af/at)  If you try to apply the 802.3af/at auto-negotiate power to the wrong pair, it won't negotiate, and won't power up.  You can also burn out the EAP225-outdoor by forcing 48V onto the 24V passive input pair.

 

For others that find this post, it's also the reason why you can't power an EAP225-outdoor via a POE++ (90W) injector, or a long range injector...  

 

So try a standard pre-fab cable between the AP and switch and let's see if that makes a difference.  If not, I'll figure out some CLI for you, like maybe:

 

TL-SG3424(config)# show logging buffer level 0

 

(see here for more info/help:  https://static.tp-link.com/res/down/doc/TL-SG3216(UN)_V2.0_CLI.pdf )

<< Paying it forward, one juicy problem at a time... >>
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#8
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Re:EAP225-Outdoor no PoE on TL-SG3424P switch
2023-02-23 06:57:14

  @d0ugmac1 

Have you tested the EAP225-outdoor on the SG3424P yet using the cable that came in the box?

> No, because the box does not contains RJ45 cable. So I have tried with several cables, same behavior.

 

I have had zero issue powering my EAP225's using TPlink 2008P and 2210P switches.

> I have no problem with my SG108PE. it works. I have tested on another POE switch which deliver 30w per port, and it works too. The 3424P is the only one the EAP225 is not working. Because, ot works with others switch, I'm deducting the issue (or wrong configuration, I don't know) come from 3424P.

 

I understand the issue you mention based on wired which may not be compliant, but why the 3424P is the only one the EAP225 is not working ?

 

So try a standard pre-fab cable between the AP and switch and let's see if that makes a difference

> No difference, tried with multiple pre-fab cables.

 

I have no console cable, I will buy one. once gathered, I will give the command result.

Have you other commands I have to execute ?

 

Thanks for your help.

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#9
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Re:EAP225-Outdoor no PoE on TL-SG3424P switch
2023-02-23 14:56:14

  @jeff13 

 

You don't need to buy a cable, you just need an SSH client like PUTTY (fwiw, the native OSX ssh client doesn't like the DH1 encryption offered by the TPlink devices, but PUTTY allows you to override)

 

Next you need to enable SSH local in your system

 

ssh

 

Then you need the management credentials from your controller (if using Omada SDN)

 

creds

 

Then you can just SSH to the IP address of your switch.  Some useful commands I found are:

 

TL-SG2008P#show power inline information interface gigabitEthernet 1/0/1

 

Interface  Power(w)  Current(mA)  Voltage(v)  PD-Class  Power-Status    

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

Gi1/0/1    3.4       64           53.4        Class 4   ON    

 

TL-SG2008P#show cable-diagnostics interface gigabitEthernet 1/0/8

Port        Pair      Status      Length         Error          

Gi1/0/8     Pair-A    Normal      8 m            ---            

            Pair-B    Normal      8 m            ---            

            Pair-C    Normal      8 m            ---            

            Pair-D    Normal      8 m            ---

 

 

TL-SG2008P#show logging 5                                                      

#2023-02-20 03:02:03,[Link]/5/Gi1/0/8 changed state to up.

#2023-02-20 03:00:20,[Link]/5/Gi1/0/8 changed state to down.

#2023-02-19 17:15:42,[Link]/5/Gi1/0/5 changed state to up.

#2023-02-19 17:15:37,[Link]/5/Gi1/0/5 changed state to down.

#2023-02-19 13:05:45,[Link]/5/Gi1/0/8 changed state to up.

#2023-02-19 13:04:03,[Link]/5/Gi1/0/8 changed state to down.

#2023-02-13 20:46:48,[Link]/5/Gi1/0/1 changed state to up.

#2023-02-13 20:46:32,[PoE]/3/Power supply status of port 1 changes from off to on.

#2023-02-13 20:42:38,[NETIF]/5/Line protocol on Interface VLAN2, changed state to up.

#2023-02-13 20:42:38,[NETIF]/5/Line protocol on Interface VLAN1, changed state to down.

#2023-02-13 20:42:36,[NETIF]/5/Line protocol on Interface VLAN1, changed state to up.

#2023-02-13 20:42:34,[NETIF]/5/Line protocol on Interface VLAN2, changed state to down.

#2006-01-01 08:00:50,[Link]/5/Gi1/0/2 changed state to up.

#2006-01-01 08:00:48,[Link]/5/Gi1/0/3 changed state to up.

#2006-01-01 08:00:48,[Link]/5/Gi1/0/2 changed state to down.

#2006-01-01 08:00:47,[Link]/5/Gi1/0/2 changed state to up.

#2006-01-01 08:00:45,[PoE]/3/Power supply status of port 1 changes from on to off.

#2006-01-01 08:00:33,[PoE]/3/Power supply status of port 3 changes from off to on.

#2006-01-01 08:00:31,[PoE]/3/Power supply status of port 2 changes from off to on.

#2006-01-01 08:00:30,[PoE]/3/Power supply status of port 1 changes from off to on.

#2006-01-01 08:00:27,[Link]/5/Gi1/0/8 changed state to up.

#2006-01-01 08:00:26,[NETIF]/5/Line protocol on Interface VLAN2, changed state to up.

#2006-01-01 08:00:26,[Link]/5/Gi1/0/6 changed state to up.

#2006-01-01 08:00:26,[Link]/5/Gi1/0/7 changed state to up.

#2006-01-01 08:00:25,[Link]/5/Gi1/0/5 changed state to up.

 

Total read-out entry number is 5.

There is no log in flash.

 

 

 

<< Paying it forward, one juicy problem at a time... >>
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#10
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Re:EAP225-Outdoor no PoE on TL-SG3424P switch
2023-02-23 15:41:32

  @d0ugmac1 

 

The SSH is enabled from Web Admin :

 

 

Sorry, but i'm not able to connect directly through SSH. I have this error message :

 

From the documentation you provide me, it's mandatory to initiate the admin account first through the console port :

Because, I have no console cable, I just buyed one. It must arrive tomorrow.

 

In addition, I have see what you test, and from the WebAdmin I can have the same results :

And I found this :

 

I have found many other cables, and one of them works with the EAP225 !

This means you right when you are speaking about the wired cable might be wired differently than straight through EIA568B.

 

This is the first time I encountered this type of issue, but is very interesting to troubleshoot and investigate.

Because I have tested the same EAP225 with the same pre-fab cable on another switch and it works, I supposed the issue comes from my Switch (SG3424P) which is not able to negotiate the right pair from cable to identify the right PoE source.
Maybe the EAP225-Outdoor is too recent for the switch.

 

Anyway, what do you think about my analysis ?

Do confirm this use case may come from the difference of both SG3424P and EAP225-Outdoor ?

 

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#11
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