Ethernet sockets not working

[YakeYake]

Hi!

I moved my EE broadband to a new home and upgraded the speed to 100Mb/s a few weeks back. There was an engineer who came in and set up the boxes in my house.
Right now my Smart Hub must be connected to the port in a fairly big white box that's placed in a cupboard near the front entrance.

The red ethernet cable here is connected directly to my Smart Hub.

There are ethernet sockets in the walls in 2 rooms and one in said cupboard to which I tried connecting the Smart Hub but it doesn't work -- it say "Cable not plugged in" when I check its status connecting to the wifi.

What do I need to do in order to make these wall sockets work?

[XRaySpeX]

Do you mean there is an Ethernet socket in the cupboard apart from the 1 in the white box (ONT)?

How do you know that these Ethernet sockets are connected to anything and are therefore live? 

[YakeYake]

Thanks for the quick reply 🙂

Yes, the cupboard has an ONT and an ethernet wall socket below it.

The socket has a cable sticking out its side which ends with a green (optical?) plug and is connected to the ONT.

I'm not sure if any of the ethernet sockets are live at all! I moved in recently and I assumed the previous owners would keep things like these working.
Would I have to get an electrician to look into this and potentially connect the wall sockets?

I don't really know anything about networking; I'm sorry if the question sounds silly.

[XRaySpeX]

Those sockets are there to spread the Ethernet around the house to make it easier to connect devices. 1 of them, presumably the 1 in the cupboard, needs to be connected to the router to make the rest live. 

[YakeYake]

Thanks, I just tried it out but it doesn't seem to be working. I guess I'll have to ask an electrician to take a look and see if he can fix them.

[XRaySpeX]

You need a network engineer not an electrician. 

[Northerner]

Hi @YakeYake 

Are you using a filter on your router cable when connecting to these other sockets? 

Thanks 

[XRaySpeX]

@Northerner : Aren't these Ethernet sockets, not phone sockets? Anyway there's no landline with FTTP.

@YakeYake : I should ignore these Ethernet sockets (they're probably not wired up) & just use your router to connect your devices to as if they weren't there.

[XRaySpeX]

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@XRaySpeX wrote:

Those sockets are there to spread the Ethernet around the house to make it easier to connect devices. 1 of them, presumably the 1 in the cupboard, needs to be connected to the router to make the rest live. 

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I meant that the Ethernet socket in the cupboard needs to be connected to a router LAN socket while the router's WAN socket is still plugged into the ONT. Did you try that?

[YakeYake]

@XRaySpeXyes, that's what I tried. I got 1 cable from the router's WAN socket plugged into the ONT -- the router's got internet access. Then I plugged in another cable from the router's LAN socket to the wall ethernet socket.
Finally, I connected my PC in another room to the ethernet wall socket there.

I'm guessing maybe I should have a switch there instead of connecting straight to my PC?

I'd love to plug it straight into the router but it's too far away and having a cable that long is a no-go at the moment.

@Northernera filter on ethernet cables? I've not heard of that 🤔