FWIW, couple hours later, the state ended up being "Adopt Failed". I was not able to get the web interface of the router to display either (to check the point of view of the router itself). At that...

So I wanted to test something this morning, logged into the controller and thought I might as well upgrade it (since I had been nagged for a while). The upgrade itself went fine. So I went ahead with...

@Pablo_PL My experience with the client list is that it shows all active DHCP leases. In other words, a client that's been powered off will still show up in the client list until the DHCP lease it...

Hi @Clive_A, By now, I've reread your last reply multiple times and did some additional research. Switching port has yielded nothing beyond port of a switch. Your statement "A switch contains...

@Clive_A , Before expansion: I was running out of ports, hence the client plugged directly in the router. Also, the main switch had a hybrid role (some aggregation, some access). After network...

Hi @Vincent-TP , This is embarrassing, the ER605 indeed has 5 ports, as implied by its name. I updated my post without removing the original content (my mistakes 🤪). I got thrown off by the omitted...