[CentOS] Centos machine sometimes unreachable

Wed Aug 22 13:08:39 UTC 2012
Götz Reinicke <goetz.reinicke at filmakademie.de>

Am 22.08.12 15:01, schrieb Richard Reina:
> I have a simple perl script that every few hours pings the handful of
> machines on my LAN. Lately I've sometimes been getting
> ping of succeeded
> ping of succeeded
> ping of FAILED
> ping of succeeded
> ping of succeeded
>   This machine in question has been running Centos faithfully for about six
> years and no recent changes to it have been made. When I try and ping the
> machine manually it works.   /var/og/messages does not seem irregular. Does
> anyone know know what might be the problem or what else I might check?

Recently I was faced with a similar problem (cant ping a device from
time to time which was not touched for about two years...). My solution:
check the lan cabel.

The system I had problems with had been standing in the sun behind a
window and the lan cabel was 'melting' and did not fit properly into the


Götz Reinicke . Filmakademie Baden-Württemberg GmbH