akaggie05 said:

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foulbeast said:

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You can bypass the AT&T gateway altogether. This is what I've been doing for almost a year - and it has been flawless so far. This won't work if your fiber terminates directly into the AT&T gateway, only if you have an ONT connected to the gateway via ethernet.

Put a switch in between the ONT and the AT&T router. Start the router and let the broadband connect - the disconnect the AT&T GW from the switch and plug in your router of choice. Make sure you clone the ATT GW WAN MAC address on your other router for the WAN connection. Set the router to acquire the IP via DHCP and you should be good to go.

Make sure you connect everything to UPS - the ONT, switch, and router. Otherwise, if the power goes out you'll need to connect the AT&T GW again to authenticate with the ONT.

A quick Google search found this page describing the process.

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I'm also seeing reports now of SFP modules set up for XGS-PON, where you clone the MAC of the gateway and run the fiber directly to a 10G switch... for the case you mention where the fiber runs directly to the gateway (which I believe is the norm now for all new installs as they upgrade from GPON to XGS- PON across the board

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