Please provide more information.
Is this a virtual machine?
What is the appropriate output of the command lspci -v for the Ethernet device?
No it is not virtual machine
Our is physical machine
Model :IBM - System X3650 M3 -
Operating System : Red Hat Enterprise Linux Server release 5.5
it show the long list, but i could find the eth0 OR eth1 devices info in this list.
Please let me know what info you are looing for. Thanks
If your Ethernet device(s) are not showing up listing the PCI bus than I think you have most likely a hardware conflict or defect, which prevents the system from detecting the hardware. It could be anything from a faulty card, improper seating of the card or other cards, a firmware issue or even bad RAM.