nanog mailing list archives

Re: 100G-LR1 (DR/FR)


From: Mark Tinka <mark@tinka.africa>
Date: Tue, 4 Apr 2023 06:44:50 +0200



On 4/3/23 22:54, Tony Wicks wrote:

I have been using the  QSFP-100G-CWDM4 2k optics for within rack/DC for a couple of years now. They are about the same 
price as SR optics but allow the use of simple duplex single mode patches without blasting 10K optics at each other 
over a 2M patch. Never had one fail or any compatibility issues.

Our use of multi-mode fibre is historical, from the days when vendors sold line cards that were mode-fixed and not pluggable. The installed base is so large that it's just easier to carry on with multi-mode for in-rack cabling, where it's needed.

Mark.


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