<html><head></head><body><div><div><div><div class="">A bunch of devices (eg Juniper MX240) come with a "small mounting shelf" — see Figure1, Figure 2 at <a href="https://www.juniper.net/documentation/us/en/hardware/mx240/topics/topic-map/mx240-installing-the-router.html#id-installing-the-mx240-router-mounting-hardware-for-a-rack-or-cabinet">https://www.juniper.net/documentation/us/en/hardware/mx240/topics/topic-map/mx240-installing-the-router.html#id-installing-the-mx240-router-mounting-hardware-for-a-rack-or-cabinet</a><br></div><div class=""><br></div><div class="">Their theory is that these get mounted on the "back" of the front rail, and it supports the weight of the chassis. I generally just put these on the font of the rear rail, and rest the back of the router on that. Seems to work well - the chassis is narrow enough to slide if the cabinet is very shallow, and the shelf is usually wide enough to deal with deeper cabinets...<br></div><div class=""><br></div><div class="">The other option is "Universal Rails" (AKA "those funny sort of L bracket half shelf thingies") — e.g: <a href="https://www.cablesandkits.com/racks-cabinets/rack-mount-shelves-and-rails/rackmount-rails/ck-rckmntrls/pro-18146">https://www.cablesandkits.com/racks-cabinets/rack-mount-shelves-and-rails/rackmount-rails/ck-rckmntrls/pro-18146</a><br></div><div class=""><br></div><div class="">W</div></div><div></div><br><div class="gmail_signature"></div></div><br><div><div class="gmail_quote">On Thu, Apr 27, 2023 at 10:03 AM, Mel Beckman <span dir="ltr"><<a href="mailto:mel@beckman.org" target="_blank">mel@beckman.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="gmail_extra"><div class="gmail_quote sh-color-black sh-color">
We use shelves rather than hanging all the weight of racked gear on the ears. That rarely works well, but a 4-post shelf for every half-dozen or so devices works wonderfully. These shelves are usually quite adjustable.<br>
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<div dir="ltr" class="sh-color-black sh-color"> -mel beckman</div>
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<blockquote type="cite" class="sh-color-black sh-color">On Apr 27, 2023, at 6:54 AM, Chuck Church <<a target="_blank" rel="noopener noreferrer" href="mailto:chuckchurch@gmail.com" class="sh-color-blue sh-color">chuckchurch@<wbr>gmail.<wbr>com</a>> wrote:<br>
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<p class="MsoNormal sh-color-black sh-color">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.
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<p class="MsoNormal sh-color-black sh-color">Thanks,</p>
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<p class="MsoNormal sh-color-black sh-color">Chuck</p></div></div></blockquote></div></div></blockquote></div></div><br></div></body></html>