Re: 100GbE beyond 40km

[Etienne-Victor Depasquale via NANOG <nanog () nanog org>]

Bear with my ignorance, I'm genuinely surprised at this:

Does this have to be Ethernet? You could look into line gear with coherent
> optics.

Specifically, do you mean something like: "does this have to be
IEEE-standardized all the way down to L1 optics?" Because you can transmit
Ethernet frames over line gear with coherent optics, right ?

Please don't flame me, I'm just ignorant and willing to learn.

Cheers,

Etienne

On Fri, Sep 24, 2021 at 11:25 PM Bill Blackford <bblackford () gmail com>
wrote:

> Does this have to be Ethernet? You could look into line gear with coherent
> optics. IIRC, they have built-in chromatic dispersion compensation, and
> depending on the card, would include amplification.
>
> On Fri, Sep 24, 2021 at 1:40 PM Randy Carpenter <rcarpen () network1 net>
> wrote:
>
> > How is everyone accomplishing 100GbE at farther than 40km distances?
> >
> > Juniper is saying it can't be done with anything they offer, except for a
> > single CFP-based line card that is EOL.
> >
> > There are QSFP "ZR" modules from third parties, but I am hesitant to try
> > those without there being an equivalent official part.
> >
> >
> > The application is an ISP upgrading from Nx10G, where one of their fiber
> > paths is ~35km and the other is ~60km.
> >
> >
> >
> > thanks,
> > -Randy
>
>
> --
> Bill Blackford
>
> Logged into reality and abusing my sudo privileges.....


-- 
Ing. Etienne-Victor Depasquale
Assistant Lecturer
Department of Communications & Computer Engineering
Faculty of Information & Communication Technology
University of Malta
Web. https://www.um.edu.mt/profile/etiennedepasquale