Cheap switch with a couple 100G

Saku Ytti saku at
Sun Nov 25 15:45:58 UTC 2018

The argument should be 50G is cheaper than 40G.

Because serdes is 25G typically, you get 25, 50, 100 without gearboxes
and retimers, so less pincount, less thermal, higher density, lower

But BOM impact to pricing isn't high anyhow, unless we're talking
about massive port counts.

If box DOES support 10GE and 40GE then the cost benefit is not there,
so you need to be targeting quite specific use case, use-case large
scale DCs are targeting.

On Sun, 25 Nov 2018 at 16:42, Mike Hammett <nanog at> wrote:
> I keep hearing how cheap 100G is compared to 40G and it doesn't seem to hold true. Prove me wrong.
> Cisco Nexus and Arista both have switches with 48x 10G ports and 2x - 6x 40G ports for under $1k. Swap those 40G for 100G and you're at $5k - $7k.
> Am I missing some cheap switches with 100G?
> I ask this because the transport companies seem to have given up on 40G.
> -----
> Mike Hammett
> Intelligent Computing Solutions
> Midwest-IX


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