The spec allows for bridging or layer 3 but none of the major or certified manufacturers support bridging on larger platforms.  (>1000 modems)

Scott Helms



On Fri, May 8, 2020 at 3:56 PM Brandon Martin <lists.nanog@monmotha.net> wrote:
I'm curious...

Is it part of the DOCSIS spec that the CMTS terminates L3, or can they
bridge to IEEE 802(.3) and delegate that to some other piece of gear?
I'm unfortunately not familiar with the MSO world much at all aside from
a little bit of L1.

--
Brandon Martin