R1D2 wrote

@Bobby1859,

 

yes, you will see a disconnect state after few minutes.

 

Does your PoE switch provide an af or an at power budget?

@R1D2 

This switch is a TP-Link 5 port Gb switch with PoE (TL-SG1005P).  it's 802.3af power, 56 Watts total, and 15.4W per port across I think four ports, the total not to exceed the 56W max.  We have just one PoE device on this switch, the EAP245 which consumes 12.7W according to its specs which also state that it's compatible with 802.3af.  So, we should be within the switch's power specs.   

We swapped that switch for another TP-Link Gb switch with no PoE and used the power injector included with the EAP345 instead.  I made that change 10 days ago and have seen none of these "EAP changed IP address" messages for this EAP since.  Could this mean that the PoE switch is under delivering power vs its specs, or that the EAP is over consuming power?   That's hard to believe.  

Elsewhere in the building, we have an identical setup, same PoE switch and same EAP245.  Here, we see the same log message, but far fewer of them.  This EAP is in an area not used for our online classes. So I'm not too concerned about this one, but it's interesting that we have the same symptoms in two different locations.  The Wi-Fi volume in this area is insignificant compared to the up and down streaming going on in the classrooms, so maybe that accounts for the fewer log messages.  

Thanks

@R1D2 

I believe this link below contains the specs for US customers.

https://www.tp-link.com/us/business-networking/omada-sdn-access-point/eap245/

In the forth bullet on the first page it clearly states:

• Support Power over Ethernet(802.3at/802.3af) for convenient and affordable installation

In about the fouth page, there's a photo showing the two ethernet ports with the following description

Multiple PoE Options for Easy Installation

EAP245 supports both 802.3af PoE and Passive PoE power supply, can be either powered by a PoE switch or the provided PoE adapter. The addition of elegant appearance and simple mounting design for easy attachment to a wall or ceiling further makes deployment effortless and flexible.

Gigabit Ethernet Port 802.3af PoE/ 48V Passive PoE

However,  on Amazon (where I have bought several),  I saw two listings for the 245 V3.  One states what I provided above and the other states at, or PoE+, is required.

So, maybe TP-Link has old, out of date specs out there.  

We need new switches anyway to increase the number of ports.  So, I'll make sure they're always PoE+ going forward.  

Thanks,

@Bobby1859 

I received the following via a message from Fae in the TP-Link Community:

“Fae replied your subscription EAP Changed IP address, Log Entry. 

The EAP245 V3 supports both 802.3af and 802.3at, while EAP245 V1 only supports 802.3at.”

My response:

All of our EAP245's are V3. If V3 supports 802.3af what could be causing the log messages per my forum posts?

Thanks,

@Bobby1859 

An additional question:

Why do the log events stop when I change the EAP 245 V3 power source from a TP-Link 5 port Gb PoE af switch to the power injector?  

Thanks,

Fae wrote

Dear @Bobby1859,

 

Sorry I didn't notice that my previous reply was deleted, now it's restored.

 

For your case, may I check the cable you are using to connect between the EAP and PoE switch? CAT5 or CAT6? What's the length? Are you using the originally provided power adapter to power up the PoE Switch? When you use the PoE switch to power up the EAP245, would the Ethernet LED turn off within 40s-60s on the PoE switch? Did you notice any network drop with EAP245?

___________

@Fae The cable is CAT7, it's 100 feet long.  The power injector is the one included with the EAP245.  The POE switch is a TP-Link TL-SG1005P.

I didn't notice any network drops.  When I used the PoE switch to power the EAP245, I did not notice if the Ethernet LED turned off within 40s-60s on the PoE switch.  I can set up a test to try to answer this question.  I will let you know the answer.

 

Thanks