[c-nsp] 3550-12T rack ears

[Jay Hennigan]

Daniel Hooper wrote:
> I'm attempting to install rack ears onto a collection of 12T's I have, for some reason the screw holes on the ears only line up on the right hand side of the switch, on the other side the holes are slightly out and it's not possible to fit the ear onto it, it doesnt matter if im mounting them on the front, back or center of the switch, the left side of the switch holes are all slightly out.
> 
> Have i just got the wrong rack mount kit? I've mounted these in the past with no hassle's, with the same batch of ears that I have for them today.

If the serial number ends in a 7, you need a different rack mount kit, 
unless it's also prime.

Seriously, Cisco's need to produce a different hole pattern for rack 
ears every time they introduce a different 1U box never ceases to amaze. 
  There are at least nine different incompatible Cisco 1U rack ear 
patterns.  When you finally get ears with the right pattern, expect the 
screws to be some odd-sized thread pattern unavailable anywhere.  (28xx 
routers are a mild example).

--
Jay Hennigan - CCIE #7880 - Network Engineering - jay at impulse.net
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