I have two EAP245 APs, one old model v1 (firmware 1.4.0 Build 20180323 Rel. 32551) and one recently bought v3 (2.4.0 Build 20200117 Rel. 39932). Configured using Omada controller 3.2.10. I have two VLANs (and two SSIDs) configured with the ids of 1 and 7.
I have Netgear GS108PEv3 managed switch. I have installed that swich when I added the new AP (v3 one). The switch is also running the latest firmware.
Shortly after configuring everything I have noticed that I could no longer access the Web UI of the switch from my laptop. Odd. I have restarted the switch while moving around with the latop and it's got working again, for a while. This did lead me on the wrong path in my investigation. Long story short, I have finally found that it is not the switch - it depends on which of these two APs I am connected to!
Turned out that if I am connected to the old v1, everything works smoothly, I can access the switch Web UI. Once my laptop jumps to v3, I lose access. Cannot ping the switch, cannot browse it. However, everything else is working fine at the same time, I can connect any device in the network or outside. Any but the switch itself!
Finally I got some time and did the ultimate test. Plugged only v1 AP in the switch, confirmed that I can access the UI and ping the switch. Unplugged v1 AP, plugged v3 one in the SAME port. No access. Again, everything else works, can access any device on the net but that switch. So, I am convinced that it is not the switch, not its configuration. It also cannot be the AP configuration since I manage both via Omada Controller. Also the network is rather simple. Oh, I have also tried to plug my laptop directly in the switch with the cable - I can access the UI of the swich without any issues.
The same behavior is demonstrated by all wireless devices, so it is clearly not the client problem either.
Just to add some details to it. The APs are configured with two SSIDs and two VLANs, 1 and 7. 1 is the main VLAN.
APs receive the IP addresses via DHCP. One is 192.168.8.103, another one is 192.168.8.105. The switch is 192.168.8.104.
Netgear switch port configuration (concentrating on one port - all my last tests were done using that particular port):
- 802.1Q mode is used (not port-based)
- APs are connected to port #1
- port #1 has VLANs 1 and 7 enabled
- on port #1 VLANs 1 and 7 both use tagged mode
- PVID 1 is configured for all ports by default
I am really confused. Given the kind of test I have done, I have eliminated all possibilities except somehing being different in the traffic from EAP245 v3. And thinking about what can be different, the only word that comes to my mind is VLAN. But what is it that can be different by the traffic sent by ONE OF THESE TWO APs that makes it impossible to connect to the UI (so, essentially, IP stack of the switch)?
The only test I have left before I start plugging things into the computer and doing some network dumping is trying the 3rd AP. I have just received E225-outdoor and my plan was to plug it in the same switch and have 3 APs.