Here is my experience setting up our UniFi Security Gateway to work in bridge mode with the PACE 5268AC for use with AT&T’s GigaPower fiber service.
What, No Bridge Mode?
The first thing to know is that there is no such thing as bridge mode with these routers. The problem with a true bridge is that even if you put a gateway behind the PACE, you still need the ability to plug DVRs (or the wireless bridges used by wireless DVRs) into the modem and communicate with AT&T’s network to retrieve video, guide data, etc. They can’t just pass all traffic through to another device.
In a traditional setup where you just use AT&T’s router as the gateway for everything, it creates a simple NAT network (on 192.168.1.x) that your wired devices and DVRs share. But if you want to manage your own network behind the router — or in my case, disable the crappy PACE WiFi and use my own access points — their solution is to provide a pseudo-bridge mode called “DMZplus” which gives you something reasonably close, while still allowing the other ports on your router to continue to NAT out to the internet like normal. . . . → Read More: Using AT&T GigaPower PACE 5268AC With Your Own Gateway
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