I have a network in my new home which, on face value, is pretty much identical to my old home, where everything worked fine. Desktop and Banana Pi (all computers other than the Pi are running Mageia Linux) are connected to the network via CAT5 and laptops usually run off wi-fi.

I've recently spent ages trying to understand why my laptop would not connect to the mysql database on the Banana Pi or even ping it, before eventually working out that I could connect via my desktop which is wired. I then connected my laptop to the network via an Ethernet cable and hey presto I can connect to the mysql server on the Pi. On the laptops using wi-fi I can connect to the Internet just fine.

I'm stumped as to why this might be. Can anyone suggest anything please? I'll supply as much information as needed, but at the moment am totally unsure of where to start.

The Pi is connected to the router which also has a wi-fi access point and a four way switch. The router's switch connects a CAT5 connection up two flights of stairs to another switch, to which the desktop is connected.

Thanks!

My first SWAG is that the laptop is connecting to the router on a guest network or the WiFi is isolated from the wired LAN. Is the router dual band and your connecting to 5GHz versus 2.4GHz which is configured differently. Check the router's wireless settings. Did you change any router settings after the move?

It's 100% definitely not connected to a different wi-fi signal. It's a completely different router to pre move. I've looked at the the router's settings and so far can't see anything that would indicate you can have the wi-fi isolated from the wired network. It's a VMG8924-B10A router FWIW. I will continue to trawl through its config menus.

Difficult to help when you donkt mention whether the IP addreses are on the same subnet, for example.
Do I assume you've set the IP addresses up as you like or that you're just using what is given?

Difficult to help when you donkt mention whether the IP addreses are on the same subnet, for example.
Do I assume you've set the IP addresses up as you like or that you're just using what is given?

Page 107 of the manual indicates there can be 4 wireless networks enabled at the same time. I am unfamiliar with this router but a guest network is usually isolated from the LAN.

ftp://ftp2.zyxel.com/VMG8924-B10A/us...B10A_V2.00.pdf

Definitely on the same subnet. That was one of the first things I checked. Should have said that, sorry.

I shall investigate this.

For a reason that totally bemuses me it works now. I changed the firewall settings on the router to lower security (just by getting to the "I'll try anything" stage) and it started working. Set them back to what they were...it carried on working. Even tried a reboot of laptop. I don't get it.

Many SOHO modem/routers isolate the wifi from lan. Many won't give you any option to allow.