100GbE beyond 40km

Mon Sep 27 19:36:50 UTC 2021

Kevin,

What do these types of boxes cost? Never heard of them, but their tech
looks neat.

On Mon, Sep 27, 2021 at 1:54 PM Kevin Menzel via NANOG <nanog at nanog.org> wrote:
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> We’ve had DCP-M boxes in service for a few years now on our +40km links, with their PAM4 100Gb optics. It’s been SO easy.
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> If I had the money, we’d throw DCP-M boxes at every link we have.
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> -Kevin Menzel
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> From: NANOG <nanog-bounces+kevin.menzel=sheridancollege.ca at nanog.org> On Behalf Of Joe Freeman
> Sent: September 24, 2021 17:07
> To: Randy Carpenter <rcarpen at network1.net>
> Cc: nanog <nanog at nanog.org>
> Subject: Re: 100GbE beyond 40km
>
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> This message was sent from outside of Sheridan College. Please be careful when opening attachments, clicking links, or responding to requests for information.
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> Open Line Systems can get you to 80K with a 100G DWDM Optic (PAM4) -
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> 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.
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> 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.
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> On Fri, Sep 24, 2021 at 4:40 PM Randy Carpenter <rcarpen at network1.net> wrote:
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> How is everyone accomplishing 100GbE at farther than 40km distances?
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> Juniper is saying it can't be done with anything they offer, except for a single CFP-based line card that is EOL.
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> There are QSFP "ZR" modules from third parties, but I am hesitant to try those without there being an equivalent official part.
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> The application is an ISP upgrading from Nx10G, where one of their fiber paths is ~35km and the other is ~60km.
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> thanks,
> -Randy