If you can’t wait for Juniper to release their supported QSFP28 100G-ZR optic, shop for third party 100G-ZR optics. I know many networks are already using third party QSFP28 100G-ZR optics in Juniper routers. I have one 80 km span between two MX204 routers using third party 100G-ZR optics with no issues. As long as the optic doesn’t draw too much power or generate too much heat it should be good.
From: NANOG <nanog-bounces+smkarp=galliumnetworks....@nanog.org> on behalf of Joe Freeman <j...@netbyjoe.com> Date: Friday, September 24, 2021 at 4:30 PM To: Randy Carpenter <rcar...@network1.net> Cc: nanog <nanog@nanog.org> Subject: Re: 100GbE beyond 40km 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 <rcar...@network1.net<mailto:rcar...@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
