nanog mailing list archives

Re: 40G and 100G optics options


From: joel jaeggli <joelja () bogus com>
Date: Tue, 19 Dec 2017 11:38:32 -0800

On 12/19/17 10:24, Sabri Berisha wrote:
----- On Dec 18, 2017, at 9:49 AM, Fredrik Korsbäck hugge () nordu net wrote:

This is the "failure" of us (the business) choosing QSFP as the de-factor
formfactor for 100G, there is not power in
that cage to make 10km+ optics in an easy way. If we would have pushed for CFP4
as the "last" formfactor in 100G land we
would be much better off.
How about OSFP? The OSFP MSA has a large number of backers, including Juniper, Arista, Finisar and Google. 

It's the vendors that chose to go for QSFP due to the density options in a single RU chassis.
osfp is potentially 540W in the front panel of a 1ru switch which poses
it's own engineering challenges.

Thanks,

Sabri



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