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59 posts

Master Geek
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Topic # 193700 21-Mar-2016 11:39
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Before I get into it, the obvious answer is cheap and nasty Cat5e cabling and that I was stupid to use some cheap stuff (it's not from Computer Dynamix).

 

 

 

Doing a P2P Bridge with some Nanostations (done it a few times over the years) for my Sister In Laws house (on my street with L.O.S) so she can piggy back off my UFB.

 

 

 

Done cabling run from under my sister in laws house, through the ground (through conduit, sealed), and up the pole (through flexi conduit and sealed) to the Nanostation. Total cabling distance around 25m. Plug the Nanostation in, get the Power Light on, LAN Light on (and flashing), and then the 2 middle lights on the Signal Strength flashing weirdly.

 

Take the Nanostation to the injector and plug in with a different cable it's sweet as. So clearly a cabling issue. Spoken to the Go Wireless team, they said replace the cable which I've already decided.

 

The cable also tests fine with a cable tester and both RJ45's are Type A and I have re-crimped both ends, just in case.

 

 

 

Questions:

 

 

 

Anyone seen this behavior before?

 

What distances are YOUR recommended lengths with POE?

 

With the fact I'm running full conduit, would I get away with not forking out for Outdoor cable?

 

 

 

 

 

Cheers Team.


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Uber Geek
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  Reply # 1516821 21-Mar-2016 11:59
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Yep seen it lots on UBNT stuff - if there's a cable fault / water in the cable they go into TFTP mode - as you've already decided replace the cable

 

 

 

Edit sorry just re-read - use outdoor cable it's cheaper than ducting anyway + has the esd drain wire


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  Reply # 1516827 21-Mar-2016 12:04
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Hi, turn the remote reset off, see how that works, if it fixes it then you can be sure its a cabling fault.

 

Cyril


 
 
 
 




59 posts

Master Geek
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  Reply # 1516841 21-Mar-2016 12:22
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Thanks for the tips.

 

 

 

I'm guessing the TFTP stuff can be turned off in the Web Gui of the Nanostation?

 

If turning off this option does fix it, then it is worth while running replacing the cable anyway? I'm guessing you're going to say yes as the cable will eventually crap itself eventually anyway? I hope there is no water in the conduit or cabling. I'll look at an FTP cable


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  Reply # 1516865 21-Mar-2016 12:53
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I saw some weird flashing after a dropout on my outdoor M5 when it wasnt getting enough power. Put an instant POE on it and plugged into real 48v POE and it never dropped out again.





Richard rich.ms

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  Reply # 1516881 21-Mar-2016 13:11
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Outdoor cabling often has some gel in it to repel water.  How good is your sealing?  :)  Asto it tends to have more anti-UV stuff in the plastic.  I've had some basic beige CAT5 from CDL running along a catenary wire out to my garage for 4 years and not seen any deterioration yet.

 

We are powering some Nanostation Loco M5 units over about 50m (possibly longer) of CAT5 with no issues in a warehouse.  The only time we had trouble was when a roof leak on the PoE PSUs resulted in electrolosys that literally ate away at the pins.





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59 posts

Master Geek
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  Reply # 1516896 21-Mar-2016 13:23
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Cheers,

 

 

 

Yeah, tried to seal the conduit the best I could. Used Marley PVC cement on each joint before burying it. The change from Solid to Flexi, I used the rubber sealing tape stuff (sounds dodgy, but it's quite good) and done that. I guess an outdoor FTP Cable is the go.


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