nanog mailing list archives

Re: 100GbE beyond 40km


From: Bill Blackford <bblackford () gmail com>
Date: Fri, 24 Sep 2021 14:22:13 -0700

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.....

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