2012/8/22 Les Mikesell lesmikesell@gmail.com
On Wed, Aug 22, 2012 at 8:01 AM, Richard Reina gatorreina@gmail.com 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?
What does ethtool say about your duplex setting
Here is the output from ethtool
Settings for eth0: Supported ports: [ TP MII ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full Advertised auto-negotiation: Yes Speed: 100Mb/s Duplex: Full Port: MII PHYAD: 1 Transceiver: internal Auto-negotiation: on Supports Wake-on: g Wake-on: g Current message level: 0x00000007 (7) Link detected: yes
THe switch is a linksys etherfast 3124 that has worked perfectly for 10 years. I don't know anything about it's settings. This is a LAN with about a dozen machines.
Thanks