On 12/26/10 8:58 AM, Dave Ihnat wrote:
> On Sun, Dec 26, 2010 at 08:50:40AM -0700, James McKenzie wrote:
>> Replace the ENTIRE run. NEVER splice, and I mean NEVER splice, LAN
>> cabling. You might have crossover problems and you might not notice the
>> loss in bandwidth until you hit 20MB+ connection speeds and then things
>> get very 'interesting'. Yes, it is a PITA to do so, but in the long run
>> you will be happier.
> I'll second that, with a caveat. If it's absolutely, positively
> impossible to pull a new run, you *can* terminate with an 8P8C ("RJ45")
> male on one end of the repair and female on the other.
>
> I don't recommend it--it's burying an eventual potential problem in
> a difficult spot to get back to--usually two problems, as there's
> bee a junction at either end of the replaced cable segment--and will
> inevitably be forgotten until someone finds it and says, "What in 7734
> were they thinking!". (In fact, if you *must* do this, leave a note at
> the junction saying "we had no choice!").
>
> But it's still far, far preferable to trying to splice cables.
>
I will agree to this. There is a standard and most splices will not
meet them. You change the resistance and crossover talk resistance
characteristics of the run. 10MB might work, 100 MB might not. Then
you have to break plaster to do another run later. Better now when the
wall is open and you can do a pull right then after the damage is done.
Again, cables should NOT cross over plumbing where it will need to be
repaired later and should, if possible, be run in conduit, even in house
walls (there are Kevlar protectors that you can wrap your cables in just
in case someone decides to get drill happy later and the location of the
cables is 'unknown'.)
James McKenzie
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