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195 posts

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#193756 23-Mar-2016 09:48
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Hello everyone;

 

Last night I had a ~25m run of cat5e cable suddenly fail, interrupting season 4 of House of Cards! The cable seemed to be sending some sort of spurious signal back to my router as all internet connectivity was lost until the patch cable was unplugged from the router.

 

 

 

I have a digitus LAN cable tester which is working, but as soon as I plug the transmitter into either end of the cable termination the Tx led indicators for the tones stop altogether. I hastily repunched the wires (admittedly in frustration before going to bed) with the same result.

 

 

 

I’m resigned to the fact that I’m probably going to have to replace the entire cable run (not an easy job), but is anyone able to follow what I have just written and have any ideas what has gone wrong?

 

 

 

Thanks!


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  #1518210 23-Mar-2016 09:49
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Mice?  Have seen some surprising rodent damage to cables.





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  #1518215 23-Mar-2016 09:56
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Yeah, that was my thought as well. I've managed to borrow a Fluke etherscope from our IT dept at work. Assuming I can figure out how to work it, I may have a better idea where to look for damage!


 
 
 
 


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  #1518220 23-Mar-2016 09:58
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Nice toy!  I hope the cabling is accessible.  Will be interested to hear how you get on.





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  #1518223 23-Mar-2016 10:07
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It certainly looks pretty cool although I was politely asked to make sure I don't drop it :)

 

 

 

Here's hoping for an easy fix, there's not much crawl space in our roof and it's further complicated with heating ducts getting in the way. I'll let you know what happens......

 

 

 

Thanks for the reply


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  #1518292 23-Mar-2016 11:28
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I'm about to run approx 20m of cabling under the house and thats my fear, is rodents... we get the odd rat sneaking in - hope they dont decide the cable looks tasty.





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  #1518320 23-Mar-2016 11:53
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^^^ Might be an idea to chuck a rodent bait station under there.


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  #1518357 23-Mar-2016 12:46
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Already done, also blocked up every hole I can find but damn things always find a way in :)

 

Most of the cable will be attached to the beams off the ground but will be a small section accessible by anything near the ground.





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  #1518359 23-Mar-2016 12:52
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I always wondered why someone hasn't come up with a rodent deterrent to put in insulation for cables etc at the time of manufacturing.


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  #1518414 23-Mar-2016 13:12
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Prob because there isnt much that deters a hungry rat :)





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  #1518447 23-Mar-2016 14:14
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Some of the gel filled cables have rodent deterrent substance. Not sure how successful they are.




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  #1518466 23-Mar-2016 15:09
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xpd:

 

Already done, also blocked up every hole I can find but damn things always find a way in :)

 

Most of the cable will be attached to the beams off the ground but will be a small section accessible by anything near the ground.

 

 

^^^ Might be an idea to chuck a cat under there. tongue-out


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  #1518496 23-Mar-2016 15:24
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DarthKermit:

 

xpd:

 

Already done, also blocked up every hole I can find but damn things always find a way in :)

 

Most of the cable will be attached to the beams off the ground but will be a small section accessible by anything near the ground.

 

 

^^^ Might be an idea to chuck a cat under there. tongue-out

 

 

Tried that.... she got p***ed off and moved in next door. 





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  #1518565 23-Mar-2016 18:08
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I would point out, once again, that nothing beats a cat for this kind of thing. Since we started adopting ferals, our rodent problem has completely disappeared, despite this being a particularly bad year for the buggers. The only downside is the abundant carcasses so proudly deposited on our carpets around the house. We really have to watch where we step in the mornings.

 

 

 

 





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  #1518764 24-Mar-2016 03:35
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If the rodents can use your network wiring holes to get in your walls, you can block the hole up with steel wool. The varmints can't chew through it plus it can be easily removed if you need to get at your cables. smile



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  #1518782 24-Mar-2016 08:37
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So, an update: Last night I re- repunched the terminations and changed the position in the patch panel as there is a spare slot. The etherscope told me I had 62 feet of cable with no apparent errors so I plugged everything back in and it works thankfully smile

 

When I get a chance I'll have to test the original port on the patch panel, but most likely it was one of my terminations. Interestingly the digitus LAN tester still wont give any indication of a transmit signal over the same cable (ie the lights stop altogether on the transmit unit), but it appears to work for other patch cables.

 

 


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