Looking at some of the posts on this and similar threads, my colleagues and I tried executing the statements provided in some of the posts (i.e., the 'dmesg' command, 'network.restart', etc.).
Please find attached two text files depicting what we have tried. Just to let you know, we have a total of 6 Ethernet ports, 4 of them being on 2 Pro/1000 Pt Dual Ethernet Port Server Adapters (2 ports/card), and 2 attached to the motherboard (along with the SVGA, Serial, Printer, USB, and PS/2--Keyboard, Mouse--ports); these 2 Ethernet ports are the ones that fail.
I'm hoping that it can be resolved through the Red Hat Enterprise Linux drivers and not have to go through the trouble of replacing the hardware/motherboard.
Please advise. Thanks.