Home Network Setup struggles

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robertzhowie

Prominent
Sep 30, 2017
12
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510
Hello! So I have been reading this forum for a while, and I simply can't find a home network setup which works. All methods seem to end up requiring me to do something to my network that I cannot do.

Currently, my network looks like:
ISP (Virgin Media) -> Superhub 3 Router mode -> Home Network (ethernet + Wifi)

Current "SuperHub3"
msQCdCj.jpg


Upstairs Ethernet switch for Desktops - far left cable is the incoming connection from downstairs Superhub3.
8Hn82us.jpg




But my Wifi has terrible signal upstairs. Fortunately, I found a BT HomeHub 4 (another ISP's old wireless router) in a box in the attic, and I planned to make this into a new wireless access point upstairs.

IOvxor4.jpg


After following a few guides, including:

http://www.tomshardware.co.uk/forum/33700-42-ultimate-modem-router-setup-thread
http://www.expertreviews.co.uk/networks/8046/how-to-use-the-bt-home-hub-5-with-another-isp
(notice the comments section)

I discovered that:

- I don't have a modem, and I can't use the SuperHub3 in modem mode since I want the wifi access downstairs.

- The Bt HomeHub 4 is locked to subnets with IP's: 192.168.1.xxx - meaning that it is incompatible with the SuperHub (Subnet 192.168.0.xxx)

So my question is:
How can I get the HomeHub 4 to serve Wifi, without changing its IP, or buying a modem?

Any and all help is appreciated. FYI I am an Advanced-ish PC user, but reasonably new to networking. So I don't mind messing with settings, hardware and whatever else.

Rob
 
Solution
B
That is strange that it is locked to a IP range. Although not a recommended thing to do you can just ignore the invalid ip address. The main thing though is to make sure the DHCP is disabled. Since it is a AP it does not actually use the IP address for anything. All the traffic directly passes between the WiFi and the lan ports without the IP being involved. All the IP is used for is to manage the device. Since it is in the wrong network you will not be able to access it. You can though change the IP on your PC to that IP range do what you need and change it back to regain internet.

This works mostly because of how subnet masks work. Both networks can overlap because in effect neither can see each other. The part...
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bill001g

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Aug 9, 2012
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That is strange that it is locked to a IP range. Although not a recommended thing to do you can just ignore the invalid ip address. The main thing though is to make sure the DHCP is disabled. Since it is a AP it does not actually use the IP address for anything. All the traffic directly passes between the WiFi and the lan ports without the IP being involved. All the IP is used for is to manage the device. Since it is in the wrong network you will not be able to access it. You can though change the IP on your PC to that IP range do what you need and change it back to regain internet.

This works mostly because of how subnet masks work. Both networks can overlap because in effect neither can see each other. The part where they can see each other is broadcast messages but mostly those are ignored by end devices. The key one that is not is DHCP so that must be disabled or you will have a massive problem.
 
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Solution
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robertzhowie

Prominent
Sep 30, 2017
12
0
510
Okay I will try setting it up as a wireless AP again but - the way that they have "Locked" it is by serving a 403 forbidden error when trying to access the browser setup page when the IP isn't in the correct range.
 
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