I have CenturyLink GPON service, which uses PPPoE.
I've read about the performance bottleneck with PPPoE over igb
interfaces limiting throughput to only a few hundred Mbps unless run on
fairly capable hardware. Caveat: the posts that discuss this issue are
a few years old.
The hardware I have is a Xeon E3-1245v6 with igb interfaces. That seems
like it should be beefy enough to handle a gigabit of PPPoE. In
testing, I get 800+ Mbps when connected though the router provided by
CenturyLink, but only 350 Mbps when connected directly to the ONT.
If I add an em-based NIC, will that work around the issue? Is a
cxgbe-based NIC the better choice?
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