[TriLUG] Slightly OT: network switch question

[Joseph Mack NA3T via TriLUG]

On Wed, 16 May 2018, Wes Garrison wrote:

> Joe,
>
> Can you explain what you mean by "re-inserted"?

Hi Wes,

ah. sorry about that

re-inserted == unplugging and replugging an RJ45

> Re-inserted into what?

(I didn't know the term "8P8C connector". I've just used the term RJ45. I assume 
they're the same for purposes of discussion here.)

you shouldn't use solid conductor cable on an RJ45 connector, as the connector 
can and will be unplugged and replugged (re-inserted). You should use solid 
conductor only on a punch down strip, where after punch down the cable will be 
tested (I jiggle the cable near the punch down point, while testing it, to make 
sure there's no cracks already in the conductor, waiting to bight me in the ass) 
and from then on everyone has to promise on pain of death that the cable will 
never be moved (well flexed. pushing it from one side to another in a plenum is 
OK by me).

> You *can, *however crimp an 8P8C connector onto both solid and stranded cable, 
> provided you use the correct connector for the application.

I still don't think it's a good idea to use one of these connectors on solid 
cable. It may save you a few dollars in cable costs on installation, but with 
the flexing of the cable on plugging and unplugging, you're inviting a 
maintenance nightmare, particularly if you have hundreds of connectors on solid 
cable.

> An 8P8C connector for solid cable has 3 "fingers" that displace the insulation 
> on the cable when crimped, so that the outer two fingers are on one side of 
> the conductor and the middle finger is on the other.
>
> Here is a picture of the middle finger 
> <https://cdn.shopify.com/s/files/1/1061/1924/products/Middle_Finger_Emoji_894a7ecd-277f-479e-9967-44d20813a2d6_large.png>

I get a middle finger emoji. Is that what you wanted me to see?

> Here's a better pic 
> <https://sc02.alicdn.com/kf/HTB1QAJoXY9YBuNjy0Fgq6AxcXXa2/cat-7-rj45-connector-RJ45-shielded-modular.jpg>

got it. thanks

Joe
-- 
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant
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