@Oliv2831, for me I only see the active link light (physical and in the Omada controller; I don't use the web UI). I plugged in SFP Copper transceivers in port 26 and 28 and no lights. When a a...

@MiroM, because it's a school I was worried that the kids could be doing something, but not if it's installed that high. Remote troubleshooting can be challanging; I can only think of a few more...

@Oliv2831, yes a device is connected. I think this is either a limitation of my sfp module or RJ45 modules in general. You need to check the port status to see if there is a valid connection. In this...

@Oliv2831, "Having tens of AP falling back to the same default IP is surprising" Yeah, a post to see what others do would be interesting. I just set the fallback IP to match the DHCP assigned value...

@Oliv2831 Oliv2831 wrote Lately, I had bad experiences with gigabit/copper SFP modules in TL-SG2428P. For an unknown reason, it seems one module stopped to forward some incoming broadcast on VLAN1....

@ckdash, rogue DHCP service or static address in the DHCP range are the usual suspects, so didn't want to rule them out. Is the IP address rejection always the .136 address or is it random address in...