I have been searching for information on how to setup my OpenWRT router when I change from Virgin Media as an ISP to Zen ISP (UK)'s FTTP service with CityFibre infrastructure without success. The OpenWRT ISP configuration site seems to give guidance for those who have a DSL service with ZEN, but not for FTTP installations. Zen ISP, understandably, only gives advice on the router they provide. Currently, I am with Virgin Media and my topology looks like this: VM Hub 4 in bridge mode -> x86 router with OpenWRT(22.03) installed and Adguard as DHCP and DNS backends -> Belkin RT3200 on a OpenWRT snapshot build as a DumbAP providing Wi-Fi.
I am assuming that all I have to do is change my current Interface WAN protocol to PPPOE , enter the IPV4 and 6 addresses and enter my ZEN ISP customer credentials where needed. That seems straight forward enough for me, but I have a feeling that I might be missing something. Any guidance from those who have successfully setup their OpenWRT routers for ZEN ISP will be welcome.
Sentences starting like that rarely end well.... and this is IMHO no exception. You asked a question in a public forum, so I think it would be just courteous to simply ignore responses you deem unhelpful.
For anyone else landing on this page with a similar question to my original post:
It seems that City Fibre's internet infrastructure (who provides the infrastructure for Zen ISP) in the UK uses GPON (ENTANET GIGABIT PASSIVE OPTICAL NETWORK) which requires you to add a VLAN ID of 911 to your WAN interface. This can be done by accessing the LuCI GUI and accessing the network->interfaces->devices tab (OpenWRT 22.03). Without it, no data will flow. At the time of writing, my understanding is that OpenReach (another ZEN ISP infrastructure provider) does not require you to add these VLAN tags.
Okay. The installation was successful. I added the VLAN tag in the luCI GUI by using -> network -> interfaces -> devices and then adding a VLAN interface (802.1q) that was tagged to the WAN interface (eth1 in my case). Then I used -> network -> interfaces to change the WAN protocol to that of PPPoE and entered my credentials given by Zen ISP and under the device section changed the option from eth1 to eth1.911 (which is the WAN port with the valid VLAN ID). I had to edit the WAN6 interface (setup as a
DHCPv6 server) and choose the eth1.911 vlan tag again under the devices tab again. Hope this helps someone else in the future who is struggling to setup their device for the ISP.