nanog mailing list archives

Re: Standard DC rack rail distance, front to back question


From: "Justin Wilson (Lists)" <lists () mtin net>
Date: Thu, 27 Apr 2023 10:00:39 -0400

I have not seen a standard on cabinets.  I have gear in a wide variety of racks.  Some of are real shallow.  Some are 
deep.  I use these to generically solve the sagging issue.


https://www.amazon.com/dp/B00XXDJASY?ref=nb_sb_ss_w_as-reorder-t1_k1_1_11&amp=&crid=EFCM0EZP8BMA&amp=&sprefix=navpoint+ra
NavePoint Universal 1U Rack Mount 4-Post Shelf Rail for Dell Compaq IBM HP APC - 33.5 Inches deep
amazon.com





Justin Wilson
j2sw () mtin net

—
https://j2sw.com (AS399332)
https://blog.j2sw.com - Podcast and Blog

On Apr 27, 2023, at 9:51 AM, Chuck Church <chuckchurch () gmail com> wrote:

Hey all.  Question about standard 4 post racks.  We bought some that are adjustable.  Unfortunately, the posts are 
very flimsy, as these are some fancy cabinets with spacing on the sides for vertical patch panels, etc.  We found 
that 2 post mounting of most Cisco devices (namely Cat 9500 1RU switches) are sagging quite bad.   We’re used to the 
new server type rails that extend to support most reasonable distances front rails to back for 4 post mounting.  
However, for a Cisco ASA1001, there aren’t rails, but rather front and back ‘ears’ you use to hit both front and back 
posts.  These would appear to not have any adjustability, the front to back post distance would seem to need to match 
the ears, I assume they don’t adjust placement on the router much.  Is there a ‘standard’ distance between front and 
back rails that devices usually adhere to?  Googling didn’t find an answer readily.  These are 19” wide cabinets by 
the way.  
 
Thanks,
 
Chuck


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