We're running a Dell PowerEdge 2650 with two Broadcom NetXtreme BCM5703X Gigabit ethernet interfaces. Until last Friday, it was running quite happily on FC4. However, after we upgraded to FC6, the network interfaces no longer work. When the system booted and tried to bring up eth0, it said "tg3 device eth0 does not seem to be present". I deleted and recreated all the ifcfg-eth* files, which made the above message stop appearing and eth0 appear
to start successfully (status "OK" on boot), but it still doesn't work. The only IP address I can ping is 127.0.0.1.
The strange thing is, if I boot from the FC6 Rescue CD, the network works just fine. In fact, I used this method to do "yum -y update" after the install, just to see if getting the current versions of the kernel and other files would make a difference, but it didn't. (FYI, the kernel I'm now running is 2.6.20-1.2933.fc6).
Does anyone have any suggestions as to how I might resolve this problem? If I can't fix my existing install, is there any way I can totally redo my network hardware and software configuration, so that I'm coming up with the network configuration created for me when I used the Rescue CD? Reformatting my disks and doing a clean install isn't an option, but a clean network install is a possibility, if such as thing exists.
Thanks in advance to all who respond.