New CentOS 7 install - Cannot connect network

[gardencontrol]

Hi Folks,

I recently installed CentOS 7 and for some reason, I am not able to connect to a wired network. Currently, my network is showing as an "unmanaged" state in nmcli d.
(I am very new to a linux OS, so I apologize for the lack of knowledge)

Thanks,

[stevemowbray]

Does this entry from the FAQ help?
http://wiki.centos.org/FAQ/CentOS7#head ... 15906fa493

[gardencontrol]

Yeah, I went through that previous to posting and still the same. It might be important to point out as well that there is no connection light showing on the router and the NIC card connection light is also not flashing. (I have confirmed that the NIC and cat5 cable are functional)

[TrevorH]

What is your ethernet card? The output of lspci -nn | grep -i net might help to identify it.

[gardencontrol]

00:19.0 Ethernet controller [0200]: Intel Corporation 82567LM-3 Gigabit Network Connection [8086:10de] (rev 02)

[AlanBartlett]

Code: Select all

[Duo2 ~]$ grep 8086 /lib/modules/*/modules.alias | grep -i 10de
/lib/modules/2.6.32-504.8.1.el6.x86_64/modules.alias:alias pci:v00008086d000010DEsv*sd*bc*sc*i* e1000e
/lib/modules/3.10.68-1.el6.elrepo.x86_64/modules.alias:alias pci:v00008086d000010DEsv*sd*bc*sc*i* e1000e
/lib/modules/3.19.0-1.el6.elrepo.x86_64/modules.alias:alias pci:v00008086d000010DEsv*sd*bc*sc*i* e1000e
[Duo2 ~]$

So the e1000e driver is appropriate for that NIC.

Silly question time: Is the NIC disabled via the system BIOS?

[gardencontrol]

Just double checked in the bios and it's enabled, although I was hoping that it might be that easy.
Also, the state is now showing "unavailable" for the connection in nmcli d; not sure if that changes anything.
Should I install " kmod-e1000e"? I currently don't have wifi connected either, so I would have to transfer it by flash drive.

[AlanBartlett]

Should I install " kmod-e1000e"?

No. Not yet. Let's examine your system, as it stands.

What does lsmod | grep e1000e show? Anything?

If the above shows nothing, please try (as root) modprobe e1000e and note if there is any error message. Then dmesg | tail -n 10. Does anything show up at the end of the dmesg log? And now repeat lsmod | grep e1000e

[gardencontrol]

No error's showing in both that stand out (I'm assuming you didn't want to post all of the information generated from the logs?).

[AlanBartlett]

So there was no error message produced when invoking modprobe e1000e ?

Does lsmod | grep e1000e show that the module is loaded into the kernel?