What am I doing wrong?!?

chris.tarry85

chris.tarry85

chris.tarry85

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Joined
29 Sep 2005
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353
Recently moved ISP's away from BT, but want to keep using the HH5 because of the gigabit ethernet ports and the fact that everything is set-up on there already such as certain fixed IP addresses etc.

Obviously the modem in this will not work with other ISP's, so I have:

- Connected the new router via ethernet to the HH5.
- Turned off wireless and DHCP on the new router and made sure it is assigned an IP and subnet that match the HH5.

If I connect to the HH5 via ethernet or wi-fi, I can navigate to the new routers pages etc. but cannot connect to the internet.

What am I doing wrong?!?
 
Is it connected by Ethernet ports at both ends? Also not 100% on this but are the hh5s provided by bt not 'locked'? As plusnet provide unlocked versions.

Also from how you worded it, it sounds like you plugged your new router to the hh5 but it should be setup the other way round the new router setup then hh5 plugged in to it.
 
When you say "match" the HH5, you don't mean identical IP addresses surely?

As above though, which device has the A/Vdsl line plugged into it?
 
You will need to adjust the DHCP settings on the HH5 so the new router's I.P. address is the default gateway.

EDIT: But it will probably be easier in the long run to use the new router for DHCP.
 
I'll site an example that has worked for me. Substitute your own IP ranges as required.

1. Hook up new ISP's router to the phone line. I'm assuming ADSL/VDSL with the necessary modem being in the new ISP's router.
2. The router will get its WAN IP from the ISP as normal. Set it's LAN IP to be 10.0.0.1
3. Turn off wifi and DHCP services on the new ISP's router.

Now comes the tricky part and is dependent on the capabilities of the new ISP router and HH5, which I don't know, but the principle would be:

4. Set a static route from the new ISP's router to 10.0.0.2 - often this can be achieved by selecting an option like 'Set a DMZ' to forward all traffic to an IP.
5. Take an ethernet cable from one of the new ISP's router's LAN ports and connect it to the WAN port of the HH5. Now I don't know if a HH5 has a WAN port or not. I think they were designed to work with either a built in modem or a BT supplied one so I hope it would. Some routers allow you in their settings to specify one of the LAN ports to be used as a WAN. If that's the case you'll need to turn that on on the HH5 and plug the cable from new ISP's router to that specific port.
6. In the HH5 you need to change the way the WAN side is handled. Probably it was set like most ISP routers to get an IP form the ISP dynamically. You'll need to change that to say the WAN side has a static IP of 10.0.0.2 (to match the route you set on the new ISP router). You'll also need to set some DNS servers and a default gateway most likely. The gateway will be 10.0.0.1 (new ISP's router) and the DNS server can either be the same or use something like Google's 8.8.8.8 and 8.8.4.4

Everything else like LAN IP address, DHCP range, Wifi etc you can leave as is on the HH5. For example in my case my second router's LAN IP address is 192.168.1.254 and the DHCP leases between 192.168.1.100 and 192.168.1.200

I suspect it's the WAN configuration on the HH5 that's not right and it's not guaranteed that you can configure it - lots of ISP provided kit locks you out of this stuff.

Note in this configuration you'll be double-NATing which can cause some applications problems.
 
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