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Some of AT&T's fiber acquisitions still use PPPoE including CenturyLink and Quantum's fiber offerings (acquired from Lumen).
by dlgeek 1mo ago
Some of AT&T's fiber acquisitions still use PPPoE including CenturyLink and Quantum's fiber offerings (acquired from Lumen).
- tristor 1mo agoQuantum Fiber doesn't use PPPoE, it uses IPoE w/ VLAN tagging using VLAN 201, which is a common approach for legacy GPON networks. CenturyLink Fiber does use PPPoE, but I believe only the authentication portion of PPPoE, but I have never had CenturyLink Fiber so I can't say for certain.
- toast0 1mo agoI don't know how 'only authentication' from PPPoE would work... If you do PPPoE auth, then you can DHCP? That would be a pretty weird config to setup. I know some CenturyLink fiber defaults to PPPoE, but you can ask for IPoE instead.
- montjoy 1mo agoI have Quantum and a UCG fiber. IIRC you only have to turn off vlan tagging on the ONT, and then set DHCP and the vlan tag on the UCG. If you try to keep the vlan tag on ONT you will get horrendous latency. The ISP still shows as CenturyLink.
- dlgeek 1mo agoYou're right about Quantum. I just went and checked my router config. (I switched from CL to Q about 6 months ago). CenturyLink did use a full PPPoE stack though.
- matttttttttttt 1mo agoTo muddy the water further, AT&T just bought Quantum fiber. FWIW, I have Quantum fiber (from post-CenturyLink but Pre-AT&T vintage) and it uses PPPoE.