yes, well, I dislike intensely the implications of not-so-intelligently splitting those 128 terminals is, and was pleased to see there was support at least, for hardware flow control on the uplink side in the spec. Since we've fixed dsl, cable, and wifi, getting gpon more right has increasingly been on my mind... so pulling a testbed together of some sort would be cool, and for that matter, having a SFP that could go right into a SFP enabled home router rather than a separate unit seems like a good idea, also.
On Thu, Jan 13, 2022 at 6:51 AM Sebastian Moeller <moell...@gmx.de> wrote: > > Yes sorry, > > in GPON you have the unit at the telco side, often called OLT (optical line > termination/terminal or similar, which feeds the whole segment of up to ~128 > remote terminals and receives data from all) the passive splitter (if any) > and the remote customer units that are called either ONU or ONT, but that are > just two names for the same unit (not sure who uses which nomenclature, the > local incumbent seems to prefer ONU, but their marketing name is > Glasfasermodem, which just translates to fiber-modem). Nomenclature seems ot > be consistent for the whole PON family, so in XG-PON or XGS-PON the unit > apparently still are called OLT and ONU/ONT. And given that PON requires some > smarts and configurability of the ONUs these tend to be small computers in > their own right with their own little (or not so little) OSes. > > Regards > Sebastian > > > > > On Jan 13, 2022, at 15:38, Dave Taht <dave.t...@gmail.com> wrote: > > > > And a gpon onu > > > > https://www.fs.com/products/133619.html > > > > On Thu, Jan 13, 2022 at 6:23 AM Sebastian Moeller <moell...@gmx.de> wrote: > >> > >> That is similar to what happens in some GPON-ONT SFPs, some run a full > >> small Linux distribution like OpenWrt inside.... though for ethernet that > >> is unexpected. > >> This is also similar to SFP VDSL "modems" which likely run their own > >> embedded OS as well inside the SFP package (at a time there was even a PCI > >> VDSL2 "modem" that was actually running its own embedded system on the PCI > >> board, IIRC, it pretended to the main computer to be an ethernet NIC). > >> > >> Regards > >> Sebastian > >> > >> > >> > >>> On Jan 13, 2022, at 15:18, Dave Taht <dave.t...@gmail.com> wrote: > >>> > >>> running linux, of course. > >>> > >>> https://blog.benjojo.co.uk/post/smart-sfp-linux-inside > >>> > >>> -- > >>> I tried to build a better future, a few times: > >>> https://wayforward.archive.org/?site=https%3A%2F%2Fwww.icei.org > >>> > >>> Dave Täht CEO, TekLibre, LLC > >>> _______________________________________________ > >>> Cerowrt-devel mailing list > >>> Cerowrt-devel@lists.bufferbloat.net > >>> https://lists.bufferbloat.net/listinfo/cerowrt-devel > >> > > > > > > -- > > I tried to build a better future, a few times: > > https://wayforward.archive.org/?site=https%3A%2F%2Fwww.icei.org > > > > Dave Täht CEO, TekLibre, LLC > -- I tried to build a better future, a few times: https://wayforward.archive.org/?site=https%3A%2F%2Fwww.icei.org Dave Täht CEO, TekLibre, LLC _______________________________________________ Cerowrt-devel mailing list Cerowrt-devel@lists.bufferbloat.net https://lists.bufferbloat.net/listinfo/cerowrt-devel
