Bob La Quey wrote: > Earlier today I had a power outage on my network. Usually > I can reboot everything and I am good to go. Today, however, > one of the boxes will not reestablish connection. I am left > suspecting a hardware failure. > > The main power lines are a good example of how _not_ to > do things. Basically long runs of extension cords and power > strips with no consideration for grounding or ground loops. > > My guess is that a voltage spike took out the network interface > on this box. I have swapped the cable to the router and gone > through several ifdown/ifup attempts to no avail. > > The network interface on the downed PC is one that is built into > the MB. > > Before I get a NIC and install it does anyone know a good way > to determine if indeed the network interface hardware is broken? > > The good news is my daughter and her boyfriend brought me > a nice bottle of Merlot for Father's Day, so I can drink my > troubles away :) >
We're talking about an ethernet interface, right. Things I can think of: 1. lspci | grep [Ee]thernet 2. dmesg | grep [Ee]th (then visual around found lines) 3. cat /proc/net/dev 4. is there a link light when connected to the switch 5. ethtool eth0 5a. ethtool -i eth0 6. ifconfig eth0 up (ifconfig eth0 .. any Tx/Tx counts?) 7. tcpdump -i eth0 (or wireshark) .. anything (ping from other term) Hope that gives some ideas. Regards, ..jim -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
