Look like there are some errors although I am not sure what the mean.
eth0 Link encap:Ethernet HWaddr 00:D0:B7:5A:C6:FE
inet addr:192.168.0.5 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::2d0:b7ff:fe5a:c6fe/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2316067887 errors:0 dropped:0 overruns:1 frame:1
TX packets:2451037674 errors:3 dropped:0 overruns:0 carrier:3
collisions:0 txqueuelen:1000
RX bytes:221599111550 (206.3 GiB) TX bytes:575914174697 (536.3
GiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:1197938537 errors:0 dropped:0 overruns:0 frame:0
TX packets:1197938537 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:109601534433 (102.0 GiB) TX bytes:109601534433 (102.0
GiB)
Cable seems fine and machine is in a dark room (no sunlight) although it
does run through the ceiling.
2012/8/22 <m.roth at 5-cent.us>
> Richard Reina wrote:
> > 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 192.168.0.1 succeeded
> > ping of 192.168.0.7 succeeded
> > ping of 192.168.0.5 FAILED
> > ping of 192.168.0.6 succeeded
> > ping of 192.168.0.9 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?
>
> Have you done an ifconfig on 5, and seen if there's any collisions, etc?
> Another possibility is that *you* haven't changed, but someone else has
> put a piece of hardware on the LAN that's trying to get that IP, or has it
> configured for that IP.
>
> mark, who *really* wishes that the network folks would give
> their hardware IPs by MAC, not broadcast
>
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