nanog mailing list archives

Re: Rack rails on network equipment


From: Sabri Berisha <sabri () cluecentral net>
Date: Sat, 25 Sep 2021 04:53:57 -0700 (PDT)

----- On Sep 24, 2021, at 11:19 AM, William Herrin bill () herrin us wrote:

Hi,

Seriously, the physical build of network equipment is not entirely
competent.

Except, sometimes there is little choice. Look at 400G QSFP-DD for
example. Those optics can generate up to 20 watts of heat that needs
to be dissipated. For 800G that can go up to 25 watts.

That makes back-to-front cooling, as some people demand, very
challenging, if not impossible.

Thanks,

Sabri


Current thread: