Re: [802.3_400GPL] [400GPL] Website updates

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To: STDS-802-3-400GPL@xxxxxxxxxxxxxxxxx

Subject: Re: [802.3_400GPL] [400GPL] Website updates

From: John D'Ambrosia <jdambrosia@xxxxxxxxx>

Date: Wed, 1 Jul 2026 06:24:11 -0400

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Reply-to: John D'Ambrosia <jdambrosia@xxxxxxxxx>

Chris

400GBASE-DR4 for PSM4 was defined in 802.3bs- not the 100G project as noted below.

500m was selected at the time due to concerns on closing the budget for 2km.

i’m glad to see the notion of breakout included in the 802.3dj standard.

john

Sent from my iPhone

On Jul 1, 2026, at 1:22 AM, Chris Cole <chris.cole@xxxxxxxxxxxx> wrote:

It's interesting to reflect how on how far DRn has come, from it's introduction as PSM4 in the 100G SMF project, where it was one of many competing point-to-point proposals to today where it's the defacto datacenter optic, although primarily as break-out.

https://ieee802.org/3/100GNGOPTX/public/nov11/petrilla_01_1111_NG100GOPTX.pdf

Chris

From: Kent Lusted <00003dd2e253c6a1-dmarc-request@xxxxxxxxxxxxxxxxx>
Sent: Sunday, June 28, 2026 8:46 AM
To: STDS-802-3-400GPL@xxxxxxxxxxxxxxxxx <STDS-802-3-400GPL@xxxxxxxxxxxxxxxxx>
Subject: [EXTERNAL]: [802.3_400GPL] [400GPL] Website updates

Dear Colleagues,

A majority of the contributions for the upcoming 30 June 2026 electronic teleconference interim meeting were posted. See: https://www.ieee802.org/3/400GPL/public/260630/index.html [ieee802.org]

With regards,

-Kent

Kent Lusted

Chair, IEEE 802.3 400Gbps/lane Signaling Study Group

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