[Klug-general] network lags - electrical interference?

Karl Lattimer karl at qdh.org.uk
Mon Jan 25 13:52:00 UTC 2010


On Mon, 2010-01-25 at 13:50 +0000, Alan @ COMM-TECH wrote: 
> Hey all, happy new decade.
> 
> On a network I am looking after, we are experiencing random slowdowns
> between 0 and 5 times per day. They last between 20 seconds and 200
> seconds each and bring everything to a halt. Then the problem disappears
> and everything is fine again - just like that...
> 
> Have trawled syslog, messages etc on the server during those times - and
> absolutely nothing out of the ordinary is showing up.
> 
> I think therefore that the issue is down to some sort of magnetic or
> electrical interference, like a faulty lighting circuit or some leery
> telephone cable crossing the RJ45... there is one place where I see a
> lighting cable is packed into the same trunking as the RJ45 for a
> stretch of about 5 meters.
> 
> Could this affect things - or does anyone have any ideas of how to
> diagnose such a problem further?

Sounds like you've fed the magwai after midnight... 

THERE ARE RULES FOR A REASON! :)

K,




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