Has anyone setup bridging to AT&T fiber ONT - Nokia OMG

I recently had AT&T fiber installed and configured “passthrough” — what they claim to be bridging, to my Omnia WAN. I get an AT&T IP address but the performance is horrible. 10mb down out of 300. Just to sanity check things I configured an old and slow Cisco 1900 that I once used for cable. I used to get “full speed” to the DOCSIS modem — 200mb, but only 70 to this Nokia model OMG ONT. Better, but still sucks, the Cisco should be able to do about 250 before it runs out of gas.
I get 350/350 via the ONT’s WiFi to my iPhone.
I tried putting the SFP into the Omnia and that doesn’t work - maybe the configuration to switch from the Ethernet WAN, or maybe just not compatible.
AT&T fiber uses a single strand and two different “colors” to achieve duplex rather than two fibers. Clever, but probably tech newer than my several year old Omnia supports?
Any ideas? Given that the Cisco 1900 sort of works, the Omnia WAN is definitely not happy for some reason.
It bridged just fine with cable and the DOCSIS3.1 modem in the past.
Someone mentioned using a “telekom modem” instead of the Nokia, but I am led to believe that AT&T requires 802.1x authentication so that may be a show stopper.
AT&T support is worthless.

You didnt provide enough information to even start debugging. You have to switch dtb link in boot and reboot for Omnia to use SFP instead of copper WAN. So do:

ln -sf /boot/armada-385-turris-omnia-sfp.dtb /boot/dtb

And reboot and post the output of:

dmesg | grep -E "(sfp|eth2)"

I am using SFP with same single SC/APC connector and works fine here. Its up to SFP what laser supports and connector not the router its plugged into.

In other hijacked topic you stated this. Is it solved then?

1 Like

Getting the IP is solved. The ONT needed the MAC address in the passthrough configuration.

I’m away right now and will have a chance to try the SFP sometime next week.

Thanks all.

TL;DR - will the RJ45 lan still work if the SFP fails - lots more in a long rant below, including vlan config, etc …

I’m still in the weeds. Some background: Right now the Omnia WAN is plugged into a T-Mobile wireless router. Problems, one is I’m double NATing. The T-mobile is a black box and the only thing you can change is the SSID. It does not support enough connections, hence two LANs. One through the Omnia the other T-Mobile.
I was ready to just use the AT&T Nokia and the hell with it, but it only supports 90 connections. While that may seem like plenty, my home is automated to the hilt. 20+ years of cat5 and lots of old access points. Appliances, plugs for lamps and such, light switches, computers, handhelds .. it goes on. The Omnia LAN (behind the T-Mobile) supports all the automation, appliances and such where performance is not an issue (double NAT). So … back to the problem at hand. My concern (I use schnaps savepoint a lot) is losing control of the Omnia.
If I change the boot to the SFP, what happens if it doesn’t work?
I would also like to setup vlans, removing ports from the br-lan, but the docs on that leave much to be desired and the config files seem to have changed over the years with different releases. I have a couple of extra Cisco routers that I can use to connect to the Omnia. Lots of ways to deal with this mess - and I have quite a mess. I started my career in Silicon Valley in 1977, retired from Cisco in 2016 after 21 years. Started using Unix and Linux since the dawn of time but this has got me stumped. I can configure Cisco routers and switches in my sleep but I simply have not put in the time on OpenWRT. I understand that the individual vlan ports need to present to eth0 and or eth1 as 802.1q trunk ports, but I need to have them as non-trunk at the physical connections (and route between them) I’ve seen many examples - none of which work because my 5.15.148 is newer and different than anything I’ve found searching the net.
I know, a lot going on here. Luci doesn’t seem to be able to present all the options on the switch port to convert it to an access port connected to the vlan cpu switch (eth0) - at least not one that routes and that doesn’t firewall off the port to whatever I plug into it.
Oh, and I’ve seen SFP that work in one machine but not another. I actually have a handful of various type (RJ, multimode, singlemode) as I used to build labs in the house. I had a fulltime VPN connection to work and enough of Cisco’s address space to build anything I needed seamlessly interface to labs at work. Sorry for the long rant, I’ve now spent about 2 days and having nothing that works.
correction: TurrisOS is 7.1.4

Then your eth2 (WAN) interface wont work and thats it and if so you change symlink back to copper and reboot to restore

Unfortunately, the AT&T SFP isn’t going to work in anything but their hardware. They have everything locked down and are hostile to custom routers.
That being said, there are ways to emulate their hardware but you need to know if you’re on xgspon or gpon. I have AT&T’s standalone ONT with GPON service, so I just needed to extract a cert in order to bypass their terrible router with the Turris.

https://pon.wiki/ has a good starting point as well as a link to a helpful discord.

Excellent, thanks! I read there was some auth in their box but the only thing I previously found was someone claiming it was 802.1x which could simply be the MAC address, but a certificate makes more sense.
It looking more and more like AT&T can keep this PoS and I’ll just stay with the crappy T-Mobile solution that’s not fast, but at least works.

It won’t - see the response below about https://pon.wiki I may go down this rabbit hole at some point, but most likely will stay with T-Mobile and Punt.