AP network access problem with PoE switches
Hello.
We have an Omada OC200 controller, 10x EAP223 (v2.0), 8x EAP225 outdoor (v3.0), SL2428P (V6.20) and SG2210MP (v5.0) switches, and several unmanaged switches. All access points, except for three, are connected to the TP-link switches and mentioned with PoE. The remaining three points are powered by a TP-link PoE injector. All of the listed devices are controlled by the OC200 controller. The controller is not a router; Mikrotik is used as a router.
We encountered the following problem: when cold-starting or rebooting the switches, not all AP become available on the local network (that is, they do not ping). At the same time, the controller shows in the web interface that there is a link and PoE on the ports. In fact, there is PoE on the AP and there is a link on the switches, but AP are not pinged on the network.
We checked the physical connection of the access points, cables and ports for defects several times. The cable lines connecting the access points are new, recently installed. We used good quality cable. The length of the cable lines does not exceed 80 meters. The minimum length of the cable line is 10 meters (and there are problems with this access point too).
The firmware of the access points, controller and switches has been fully updated to the latest releases. We tried lowering the firmware versions of the switches and AP, but this did not produce any results.
The only method that 100% helps solve the problem is changing the port speed. If you set the port speed to 10mbit/full duplex and restart PoE, the access points appear on the network. After that, you can return the port speed back to auto and the access points continue to work fine.
We’ve run out of any ideas about what the problem might be. Please provide consultation on this issue.
Thank you.
Hello @Vincent-TP
Thank you for your participation.
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Yes, the LEDs on the access points are lit.
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Yes, the status of such points in the controller interface is “disconnected”.
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The 3 access points that are connected via a PoE adapter have no issues. As for the remaining 15 access points, most of them are always in the “disconnected” status on the controller after restarting the switches (for example, the access point named DC-62-79-B3-3F-6A). According to my observations, 3 access points connected to the switches are more often online than offline after restarting the switches (these are the access points DC-62-79-B3-41-E8, DC-62-79-B3-42-22, DC-62-79-B3-40-FC). The remaining 12 behave differently after restarting the switches.
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Yes, the SSID is displayed in the list of networks.
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It sometimes helps.
To check if the EAP units matter, please select one EAP powered by a POE adapter and one EAP powered by a switch, then swap their locations. Could you observe whether the situation changes?
Okay, we will try swapping the access point powered by the POE adapter with the one connected to the POE switch. This will take some time because the location is quite far from me. I will write later regarding the test results.
Additionally, does this happen every time you reboot the switches?
Yes, every time, some devices on the switch are not visible on the controller interface.
Which firmware versions did you test, and what versions are currently installed on the switches?
The latest firmware versions for the switches were initially installed. During testing, the firmware was rolled back to the previous release. Current versions: SL2428P has firmware 6.20.5 and SG2210MP has 5.0.8.
I am attaching screenshots showing that some access points are in the “disconnected” status. This occurred today due to a power outage in the network segment where the SG2210MP switch is located.
