CentOS 6.7, network issue

[JCH]

Hello all,

 

So I have an E3v5 server that I've had on CentOS 7 for a while now, and I just went ahead and tried to install CentOS 6. I first tried to install 6.5, but then realized the CPU was not supported, so I installed 6.7. However, for some reason, after configuring the IP in the setup of the OS, the network does not appear to work. If I did "ifconfig", it wouldn't show eth0. If I did "ethtool eth0", it would show as not linked. If I restart the network, nothing. Still won't show up. Oddly enough, I typed "ifup eth0" and it started working. BUT, isn't ifup only a temporary fix? So basically, I tried restarting the network, and there it goes again, not working, at least not until I type "ifup eth0". 

 

What can I do?

[Electronics Wizardy]

what network card?

 

Why are you using centos 6. Its pretty old and not supported well.

[JCH]

1 minute ago, Electronics Wizardy said:

what network card?

 

Why are you using centos 6. Its pretty old and not supported well.

Just the NIC port in my motherboard, also using CentOS 6 because I've got things that don't work well in CentOS 7.

 

However, I did notice that onboot was set to no, so I just changed it to yes, and now it's telling me that eth0 does not seem to be present (even though it should be), and if I change device from eth0 to eth1, it tells me the MAC address is different after restarting the network, what should I do?

[Electronics Wizardy]

Just now, JCH said:

Just the NIC port in my motherboard, also using CentOS 6 because I've got things that don't work well in CentOS 7.

 

However, I did notice that onboot was set to no, so I just changed it to yes, and now it's telling me that eth0 does not seem to be present (even though it should be), and if I change device from eth0 to eth1, it tells me the MAC address is different after restarting the network, what should I do?

What network card is it?

 

look for it in lspci -v

 

What are you doing on this. Id strongly suggest trying again on centos7/

[JCH]

1 minute ago, Electronics Wizardy said:

What network card is it?

 

look for it in lspci -v

 

What are you doing on this. Id strongly suggest trying again on centos7/

01:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network Connection (rev 03)

[Electronics Wizardy]

1 minute ago, JCH said:

01:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network Connection (rev 03)

You need drivers.

 

Download them here https://downloadcenter.intel.com/download/13663/Intel-Network-Adapter-Driver-for-82575-6-82580-I350-and-I210-211-Based-Gigabit-Network-Connections-for-Linux-?product=71839

[JCH]

4 minutes ago, Electronics Wizardy said:

You need drivers.

 

Download them here https://downloadcenter.intel.com/download/13663/Intel-Network-Adapter-Driver-for-82575-6-82580-I350-and-I210-211-Based-Gigabit-Network-Connections-for-Linux-?product=71839

Fixed the issue. Was just onboot set to no. All good now, thanks for your help anyways!