100GbE beyond 40km

Edwin Mallette edwin.mallette at gmail.com
Fri Sep 24 21:34:53 UTC 2021


I just bite the bullet and use 3rd party optics.  It’s easier and once  you make the switch, lower cost. 

Ed

Sent from my iPhone

> On Sep 25, 2021, at 12:29 AM, Joe Freeman <joe at netbyjoe.com> wrote:
> 
> 
> Open Line Systems can get you to 80K with a 100G DWDM Optic (PAM4) -
> 
> I've used a lot of SmartOptics DCP-M40 shelves for this purpose. They also have transponders that allow you to go from a QSFP28 to CFP to do coherent 100G out to 120Km using the DCP-M40, without a need for regen or extra amps in line.
> 
> The DCP-M40 is a 1RU box. It looks like a deep 40ch DWDM filter but includes a VAO, EDFA amp, and a WSS I think. 
> 
>> On Fri, Sep 24, 2021 at 4:40 PM Randy Carpenter <rcarpen at 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
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