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 > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >