This seems like a good demarcation for the colors, but two things. Its a bit more expensive, and, it typically makes for a pretty mess. You're talking pre determined cable lengths for the most part. I tend to avoid patch cables like the plague and invest in long term deployments cut to length. Intelligently strapping in mostly permanent wiring should be worth the investment and reduce outages in the long run. The colors don't hurt. Best, Marty ----- Original Message ----- From: Owen DeLong <owen@delong.com> To: Glenn Sieb <ges@wingfoot.org> Cc: nanog@nanog.org <nanog@nanog.org> Sent: Mon Jun 16 22:56:45 2008 Subject: Re: Cable Colors I don't know of any hard standard in use anywhere. I've generally taken to the following: Green == low-bandwidth straigh-through Telephone, T1, Serial, etc. Purple == Roll Cables (almost always serial, sometimes telecom) (8-1 7-2 6-3 5-4 4-5 3-6 2-7 1-8) Orange(C) == EIA-568b cross-over cable (ethernet xover) Orange(F) == Multimode Fiber Yellow(F) == Singlemode Fiber White == Clear (inside VPN concentrator network) Black == Crypt (Outside VPN concentrator network) Blue == Publicly accessible networks Red == Backend (usually OOB management) networks Pink == KVM (KVM switch <-> Dongle) Occasionally I encounter needs for greater specificity, but, these usually do most of what I need. I'm sure others use entirely different choices. Owen
I work around the mess issue by stocking in 1/2 foot increments. Sure you sometimes get a little extra at the ends, but, with a maximum of 6" extra to deal with, it's usually not much of a mess and can mostly be absorbed within the width of the vertical and height of the horizontal cable managers at each end. Yes, it's a wee bit more expensive. In long term deployments, custom-cut to length on site might make sense, but, I work in dynamic and changing environments where a given cable's life-span varies unpredictably between a few days and several years. In that environment, cut-to- length requires more staff and cost than my budget allows. Velcro cable wraps are your friend and the pre-printed serial/length labels at each end help a lot in the long run, too. Owen On Jun 16, 2008, at 5:15 PM, Martin Hannigan wrote:
This seems like a good demarcation for the colors, but two things. Its a bit more expensive, and, it typically makes for a pretty mess. You're talking pre determined cable lengths for the most part. I tend to avoid patch cables like the plague and invest in long term deployments cut to length.
Intelligently strapping in mostly permanent wiring should be worth the investment and reduce outages in the long run. The colors don't hurt.
Best,
Marty
----- Original Message ----- From: Owen DeLong <owen@delong.com> To: Glenn Sieb <ges@wingfoot.org> Cc: nanog@nanog.org <nanog@nanog.org> Sent: Mon Jun 16 22:56:45 2008 Subject: Re: Cable Colors
I don't know of any hard standard in use anywhere. I've generally taken to the following:
Green == low-bandwidth straigh-through Telephone, T1, Serial, etc. Purple == Roll Cables (almost always serial, sometimes telecom) (8-1 7-2 6-3 5-4 4-5 3-6 2-7 1-8) Orange(C) == EIA-568b cross-over cable (ethernet xover) Orange(F) == Multimode Fiber Yellow(F) == Singlemode Fiber White == Clear (inside VPN concentrator network) Black == Crypt (Outside VPN concentrator network) Blue == Publicly accessible networks Red == Backend (usually OOB management) networks Pink == KVM (KVM switch <-> Dongle)
Occasionally I encounter needs for greater specificity, but, these usually do most of what I need.
I'm sure others use entirely different choices.
Owen
participants (2)
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Martin Hannigan -
Owen DeLong