nanog mailing list archives

Re: Cable Colors


From: "Jay R. Ashworth" <jra () baylink com>
Date: Tue, 17 Jun 2008 17:15:22 -0400

On Tue, Jun 17, 2008 at 01:28:38PM -0400, Joe Abley wrote:
The initial cable install for the pre-provisioned servers was done  
with much planning and documentation by people who did data cabling  
for a living, and was correspondingly tidy. The cables were all blue.  
Any change that was required after that was installed using a red cable.

Once per week the data cabling people would return, within a posted  
window, and replace the temporary red patch cables with cut-to-length,  
tested, blue cables which were run according to the larger cabling  
strategy, and rigourously documented.

Ah yes, the 'purple wire' technique.

I forget which book it's mentioned in, but it had to do with really old
wire-wrapped computer boards.  If you had to put in such a 'hack' wire,
you did it in purple so it would stand out.

Cheers,
-- jra
-- 
Jay R. Ashworth                   Baylink                      jra () baylink com
Designer                     The Things I Think                       RFC 2100
Ashworth & Associates     http://baylink.pitas.com                     '87 e24
St Petersburg FL USA      http://photo.imageinc.us             +1 727 647 1274

             Those who cast the vote decide nothing.
             Those who count the vote decide everything.
               -- (Joseph Stalin)


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