Page 1Spare home hub as a switch
04/02/2009 10:26:26http://www.jarviser.co.uk/jarviser/repeaterhubswired.html
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Use your spare BT Home Hub as a wired ethernet switch and WAP!
This will add wireless to a non-wireless modem, or
extend wireless access to a room such as a basement,
using a spare BT Home Hub and an ethernet cable or
Home Plugs.
If you have difficulty following the article there is also a
"jargon free" verbose version for Version 1 hubs only
(Click here)
This has been tested on Version 1 slave hubs (left hand
picture) on all firmwares, BT and Speedtouch. Also tested
on version 1.5 hubs but they should only be used on BT
firmwares.
Also tested using slave V2.0 hubs (Right hand picture)
using standard firmware. See here for versions.
Note: This is a multi-page webpage. If it does not page
properly when printed, it is also available as a pdf
document.
ADSL router modems using standard ethernet protocols and can usually have another router (or "switch") plugged
into one of the ethernet ports to extend the network through solid walls or over longer distances to extend wireless
access to difficult areas - like a cellar!.
Any router can behave as a switch if the DHCP IP address server is switched off.
The diagrams show the end product. When it is fully set up the slave hub will simply be connected to the mains
power supply and can be put in an attic, garage or wherever an ethernet cable will pass so that you can extend the
wireless range through walls that are opaque to wireless signals. The slave is NOT connected to the phone line!!
Using two hubs wired together allows use of WPA/WPA2 encryption and I would strongly recommend setting the slave
hub (and master hub if it has Wi-Fi) to WPA because WEP is easily crackable.
Another advantage of having two wifi hubs wired together is that you can connect wirelessly to the master to make
changes to wireless settings on the slave, and vice versa. So you can connect by wireless and still alter wireless
settings without getting cut off!
The significant thing is that the master hub has no special settings and therefore the master hub can be any make
with an ethernet port in order to connect to the slave hub. I have a friend who moved to Sky broadband but used his
Home Hub V2.0 as a slave because Sky did not supply a wireless-n router. However you will need to know the range
of IP addresses that the master hub will accept. The IP address settings in this article assume the master is a BT
Home Hub of some sort.
Telephony
I originally thought that the hub phones would not function on the slave home hub, however recent postings on The-
Scream.co.uk and filesaveas.co.uk show that it can be done by fooling a version 1 slave hub to think that it is on the
web.
Version 1.5 hubs you might coax into action, but forget telephony on Version 2.0 slave hubs - can't be done.
See my Repeaterhub Phone page for details of how to use hub phones on V1 repeaters.
I have it on good authority that functions which rely only on ethernet, such as BT Vision, do work on the slave
without any changes.
Caution
The Home Hub is unpredictable! Whereas the following should work, getting the hub to connect to a wifi PC can be a
pain at the best of times. The following worked for me but if you are not prepared to experiment and repeat the
process til it works you may be disappointed. See Troubleshooting.
The setup
The sequence is important!! If you want to go your own way, or go back into a standalone slave with no master
connected after switching off the DHCP you are advised to fix the IP addresses in the PC to 192.168.1.100, subnet
255.255.255.0, Gateway and DNS of 192.168.1.254
The master hub is powered up and connected to the ADSL filter and the phone socket.
The slave hub is not connected to anything at this stage.
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