nanog mailing list archives
Re: 100G-LR1 (DR/FR)
From: Brandon Butterworth <brandon () rd bbc co uk>
Date: Tue, 4 Apr 2023 07:54:38 +0100
On Tue Apr 04, 2023 at 08:54:55AM +1200, 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
10k used to be standard part at lower speeds. It's a bogus measure of link budget which is what really matters and is lower for the same rated distance with each speed increase. At 4.3dB an LR4 is hardly blasting. While you are fine in rack with the 1.6dB of FR4, in the average DC with a MMR it is marginal/broken. I'd prefer they had the old 1G LX's 9dB. brandon
Current thread:
- Re: 100G-LR1 (DR/FR) Mark Tinka (Apr 01)
- <Possible follow-ups>
- Re: 100G-LR1 (DR/FR) David Siegel (Apr 02)
- Re: 100G-LR1 (DR/FR) Mark Tinka (Apr 03)
- RE: 100G-LR1 (DR/FR) Tony Wicks (Apr 03)
- Re: 100G-LR1 (DR/FR) Mark Tinka (Apr 03)
- Re: 100G-LR1 (DR/FR) Brandon Butterworth (Apr 03)
- Re: 100G-LR1 (DR/FR) Jared Mauch (Apr 04)
- Re: 100G-LR1 (DR/FR) Mark Tinka (Apr 03)
- Re: 100G-LR1 (DR/FR) Jared Mauch (Apr 04)
- Re: 100G-LR1 (DR/FR) Mikael Abrahamsson via NANOG (Apr 04)
- Re: 100G-LR1 (DR/FR) Tyler Conrad (Apr 04)