UK TalkTalk with Draytek modem and OPNSense router - Help Needed

Started by CaptainFrank, October 04, 2025, 02:24:26 PM

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Hi all,

First off, let's get this out of the way - I don't know what I`m doing!

I`m trying to upgrade my homelab setup, did a bit of Googling and OPNSense seemed to be the way to go.

I`ve bought a Draytek Vigor 167 modem as the TalkTalk provided modem/router doesn't seem to do bridge mode.

These 2 guides seem to help me setup the Draytek:-

https://www.draytek.co.uk/support/guides/kb-isp-talktalk#vigor-vdsl2-modems

https://help-centre.talktalk.co.uk/Broadband/Manage_my_network_and_devices/Set_up_a_non-TalkTalk_router

But I can't find anything specific to OPNSense.

Am I right in thinking that I need to set the OPNSense WAN interface to use VLAN101, and DHCP for it's IP config?  because (assuming I`m doing it right!), it doesn't seem to work.


Any help appreciated.


Frank.

I've never until now seen VLANs for TT for contemporary FTTP services. I knew some business ones did.
Are you receiving a residential or business service? Is it FTTP or otherwise what is?
Edit: Rethinking what might also be needed to help.
If you have successfully setup your vigor to be your main router, then presumably you want then to have OPN  as a router behind another router. Seems plausible for a homelab. If so, this might help https://homenetworkguy.com/how-to/use-opnsense-router-behind-another-router/


If you map the instruction in the original Draytek link (https://www.draytek.co.uk/support/guides/kb-isp-talktalk#vigor-vdsl2-modems) across to the fields given in section 2 of the device manual https://www.draytek.com/assets/online_manuals/pdf/DrayTek_UG_Vigor167_V1.4.pdf

I think you will be able to do what you are looking for.




Quote from: CaptainFrank on October 04, 2025, 02:24:26 PMAm I right in thinking that I need to set the OPNSense WAN interface to use VLAN101, and DHCP for it's IP config?  because (assuming I`m doing it right!), it doesn't seem to work.
VLAN tag must be set in the Draytek modem (as per the guide you linked), and the WAN in OPNsense must be set as DHCP, that's it!

Hi all,

Thank you for the replies.

This morning, I`ve had time to play again.  With the Draytek 167 in Router mode instead of modem mode, it connected and received an IP address from the ISP DHCP.  I therefore believe that the issue lies between the modem and the OPNSense router.

Reading hushcoden's, reply I fear I may have over-complicated matters by also putting the OPNSense WAN interface on VLAN 101.  I don't think this is necessary.

I may try again this afternoon.


Frank.