nanog mailing list archives

Re: Low Cost 400G??


From: Darrel Lewis via NANOG <nanog () lists nanog org>
Date: Mon, 15 Dec 2025 07:09:15 -0800

*wave* Long time no chat!   I hope all is well with you and yours.

-Darrel 

On Dec 15, 2025, at 5:59 AM, Jesper Skriver via NANOG <nanog () lists nanog org> wrote:

The Arista 7280 series has models with moderate amounts of high speed ports
to go along with a larger number of lower speed ports, for example
7280CR3A-24D12 has 24x 100G and 12x 400G
7280CR3A-48D6 has 48x 100G and 6x 400G

/Jesper

On Mon, 15 Dec 2025 at 15:44, Mike Hammett via NANOG <nanog () lists nanog org>
wrote:

*nods* Usually, I don't need lots of ports. Usually, just a few will do.

That's the annoying thing: they usually come with (and I'm exaggerating to
avoid getting caught up in minutiae) two high-speed ports or 50, but rarely
six, eight, or ten.



-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com

Midwest-IX
http://www.midwest-ix.com

----- Original Message -----
From: "Tom Beecher" <beecher () beecher cc>
To: "North American Network Operators Group" <nanog () lists nanog org>
Cc: "Mike Hammett" <nanog () ics-il net>
Sent: Monday, December 15, 2025 6:52:56 AM
Subject: Re: Low Cost 400G??




   * Lots of ports
   * Lots of FIB
   * Cheap


Pick 2


On Mon, Dec 15, 2025 at 2:03 AM Mike Hammett via NANOG <
nanog () lists nanog org > wrote:


Is it paradoxical to wonder what low-cost full table (or close to it) 400G
options there are? An earlier thread looks like the Arista 7280QR-C36 is
"almost" there for 100G at a reasonable $3k, but a quick look at
400G-capable goes up, well, 4x in price, though one does get fully into DFZ
capable devices then.

It seems like anything with more than low 6 digit route capability goes
into full-scale multi-million capability, which is great technically, but
not so great financially.



-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com

Midwest-IX
http://www.midwest-ix.com


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