I will check that access, thanks.

The home plug may not have an IP although as it is acting as a WAP it probably does it just may be difficult to find it. However, I've quoted below part of your previous posts. All of the devices in bold will definitely have an IP that you could try pinging.

Personally, I would use one of the laptops as a test device. Connect it to one of the WiFi networks and try pinging the PC and the other laptop. Then, connect it to the other WiFi network and do the same. See what the results are. If all pings work then it suggests there is nothing specifically in the network config stopping you seeing other devices - if some work but some don't then it may give more of an idea as to what is going on.

This is ultimately about mapping the network. Map which devices are connected to what and then which devices can "see" which other devices. The pattern should ultimately show what is stopping things working.

I am greatly confused as to what is a 'network'. I have two 'wireless networks', one from the router and one from the Solwise wifi extender, with different SSIDs. I have several machines 'networked' - the PC via Powerplug to router, two laptops via wireless to router and a wireless printer (the printer is on the router 'network'), plus a 'Smart TV' and a set-top Youview box, both connected to the Solwise wifi. All bar the PC obviously could connect to either wireless 'network' by choice,.

ian - I can ping the PC and the other laptop from my laptop on both wifi connections.

Edited by mikejp (Wed 07-Feb-18 14:14:41)

That suggests there is nothing isolating the devices.

My suspicion is that some traffic is not traversing the powerline properly - I did have this before with some Netgears and never did get fully to the bottom of it and it was quite a while ago so I can't remember exactly what was failing.

Thanks. More head-scratching for me!