On 22/08/2012 14:01, 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?
I had this problem in the past and found that it seemed to be due to
iCMP rate limiting. We were pinging a lot of hosts from the monitoring
system, however... But you might want to investigate here:
http://www.kernel.org/doc/man-pages/online/pages/man7/icmp.7.html
--
Regards,
Giles Coochey, CCNA, CCNAS
NetSecSpec Ltd
+44 (0) 7983 877438
http://www.coochey.net
http://www.netsecspec.co.uk
giles@xxxxxxxxxxx
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