[EXT] Re: rack rails

Mon Mar 30 16:09:48 UTC 2020

We tried to flip the sides of rails in  QFX5120 and it cause two problems
that prevent us from keeping it this way
1. The switch was 2 cm from the rear post line
2. The switch vibrate as you can see in the video
https://photos.app.goo.gl/WQwcE9vcPjSiEi9N9

Nitzan

On Mon, Mar 30, 2020 at 6:54 PM Tore Anderson <tore at fud.no> wrote:

> * Cummings, Chris
>
> > Now that you say that, I think you're right. I am referring specifically
> to the EX4650 and they are the cheesy type where the rear half of the rail
> stays screwed in to the rack and the front half of the rail is attached to
> the switch. I assume it is the same on the QFX since they are very similar
> platforms. Basically they are that annoying type between rack ears and
> sliding rails where the device can separate completely from the rails.
>
> Looking at the documentation (linked below), it would appear the EX4650
> has the exact same rack-mount kit as the EX4500 and EX4600 do.
>
> They all share the fundamental problem I'm taking about, namely that there
> are fixed mounting ears on the port side of the switch, which prevent
> removal through the cold aisle (assuming data centre/PSU-to-port airflow).
>
> The "sliders" are really just there to prevent the PSU end of the switch
> to sag.
>
> Tore
>
>
> https://www.juniper.net/documentation/en_US/release-independent/junos/information-products/topic-collections/hardware/ex-series/ex4650/quick-start-ex4650.pdf
> (page 6)
>
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