This is the SFP that I purchased at the time.

https://www.amazon.com/gp/product/B00U77IJ2M/

This may well save my weekend. A couple questions if you’re willing:

I’ll be using the EdgeRouter X - no SFP, but I’m assuming changes should be trivial. To clarify the question and response above, though - I think @gattimassimo was asking about skipping the ONT by using a fiber SFP. Since you linked to an Ethernet SFP, I’m guessing that’s not what you’re doing (I’m not even sure that’s possible?) but I’d love to find out otherwise. If I am correct here, is there a benefit to using the SFP version of the EdgeRouter (I could still exchange.)?

Second, you don’t appear to be offloading PPPOE. Is there a reason? Seems like that’s a meaty process that would benefit from coming off the software as well.

Anything else I should look out for? Thanks!

First, I was cobbling together instructions from multiple sources to arrive at my solution and the PPPOE config is from the example I was using. And second the line that was brought to my tech closet in my house was terminated with an ethernet connector, so that's what I had to work with. 😏

The only real added benefit to the SFP version of the EdgeRouter is that using it frees up a port on your switch. Otherwise you could totally configure one of the ethernet ports as your inbound WAN. In fact I did that until my SFP arrived and then I reconfigured to use that and free up an ethernet port on the switch.

What you're all seeing here is the final configuration I put in place, which i've been running without a problem since I published this. The secret sauce is to remember to enable hardware NAT.

@jeffkirsch
Looking at the documentation here, it looks like since this is a MediaTek-based device, the "hwnat enable" in this config block should enable hardware offloading for Bridging, DPI, NAT, VLANs, GRE, & PPPoE. I may be missing something though.

My EdgeRouter X SFP should be coming this week so I hope to get it set up using this. I already bought the SFP for ethernet from the link above, so crossing my fingers everything works as expected! Thanks for sharing!

Edit: It worked! After initially upgrading the firmware, I did get some warnings after loading this config.boot file. I also had to manually run both commands to enable hardware offloading, but in the end, it worked. Now I am just waiting on my PoE injector to get here, since I mistakenly thought the ER-X-SFP's passive 24V PoE supported the power needs of the UniFi 6 Lite.

Hi there, I wanted to report back here after being switched from CenturyLink to Quantum Fiber. Where I live, everyone is being switched over to Quantum Fiber from CenturyLink Fiber. If this sort of thing applies to you, and you are being moved from PPPoE to IPoE, here's what I did:

1. Changed my eth5 config from what is described above to DHCP, removing the PPPoE entry:

ethernet eth5 {
    description "CenturyLink WAN"
    duplex auto
    speed auto
    vif 201 {
        address dhcp
        description "CenturyLink WAN VLAN"
        firewall {
            in {
                name WAN_IN
            }
            local {
                name WAN_LOCAL
            }
        }
    }
}

2. Then, I had several instances of "pppoe5" in my config elsewhere. I replaced all of these with "eth5.201", and things started working.

I discovered this after my internet went down, and in hindsight it looks like my outage was due to my custom EdgeRouter setup. I think Quantum may have been able to auto-switch the customers who used the default CenturyLink routers from PPPoE to IPoE.