At this point, I'd be happy to see others happily deploy a single-lambda optic of almost any variety! Since deploying 400G in a clients network (but 100G still being the preferred connection choice), any inquiry with respect to LR1, FR1 or DR+ is met with "no thanks, LR4 please."

If asked, I'd recommend FR1. They're available at a great price-point, and 2km reach is adequate for most applications.

On Fri, Mar 31, 2023 at 7:25 AM Jared Mauch <jared@puck.nether.net> wrote:

The common tech is 100G-LR4 these days - I'm wondering how many operators are supporting the LR1 to allow its use on 400G and future 800G optics as those use breakout to support 100G ports.

Would you rather do a 400G port on a router vs 100LR1?

Curious what others think.

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