Enterprise GPON / Zhone Questions

Ross Tajvar ross at tajvar.io
Wed Dec 12 06:14:44 UTC 2018


I don't really have any advice to offer here (sorry), but I am curious how
setting up a GPON LAN would save money vs just getting cheaper
switches...and also what a GPON LAN even looks like. Does every office or
classroom have an ONT?

On Tue, Dec 11, 2018 at 10:53 AM Nick Bogle <nick at bogle.se> wrote:

> Hello fellow NANOG members :)
>
> Let me start with a little bit of background, my day job is a Network
> Engineer for a local university where we have primarily a Cisco environment
> from phones to switching to routing, etc. Before my time, we hired a
> contractor to design a GPON LAN system for a new building as a cost saving
> measure (though I am not sure how successful that was).
>
> Either way, the contractor is about to hand the system off to us, and we
> have gone through the training and such, and I feel confident in my ability
> to manage the system, but we have a few questions that the manufacturer of
> our equipment and our contractor didn't really want to answer. We are
> currently using a Dasan Zhone MXK-F1419 with several different downstream
> ONT models (all Zhone).
>
> -We would like to consider use of 3rd party GPON B+ Optics on the
> linecards to add redundancy to the splitter (as the cost of 1st party are
> too high). Does anyone have experience with 3rd party
> vendors/compatibility/stability issues? We were told they theoretically
> should work and just throw a log event, but it hasn't been tested. If so,
> what vendors would you recommend? So far all we've really seen are Ubiquiti
> and Fiberstore optics.
>
> -As GPON is a standard itself, I'm aware interoperability between OLT and
> ONT vendors is heavily limited.. Does anyone have any experience using say,
> Zhone ONT's with a different model OLT, or Zhone ONT's with a different
> model OLT? I've heard word that Zhone ONT's may be able to work with Nokia
> OLT's but it's technically not supported.
>
> -We've already experienced some pretty big stability issues (have replaced
> 1 line card 5 times..), our contractor is saying it's just because we were
> a pretty early adopter of this line and that they've fixed it and fixed
> internal policies to add additional QA and testing before shipping to
> customers. Does anyone have any experience with working with Zhone and
> their overall stability of components?
>
> - Any other thoughts/gotchas/advice for deploying a GPON environment in a
> corporate LAN? (or about deploying a Zhone solution) It's pretty service
> provider oriented, and is incredible noticeable in the CLI.
>
> -Is anyone familiar with Zhone CLI? The apparent lack of any "show"
> configuration commands is infuriating.
>
>
> Feel free to contact me offlist if you have any pertinent info that you
> don't want on the list.
>
> Thanks,
>
> Nick Bogle
> nick at bogle.se
>
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