Comment by dlgeek

8 hours ago

Some of AT&T's fiber acquisitions still use PPPoE including CenturyLink and Quantum's fiber offerings (acquired from Lumen).

4 comments

dlgeek

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tristor  8 hours ago

Quantum 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.

  • dlgeek  8 hours ago

    You'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.

  • montjoy  8 hours ago

    I 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.

  • toast0  8 hours ago

    I 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.