Redhat – Changing network interface names on RedHat

interfacenameredhat

I have a DELL server running RedHat EL 6.3 with two 1G network interfaces, and two 10G network interfaces.

Following this note, I have successfully renamed the two 1G network interfaces that used to be called em1 and em2. However, I cannot rename the 10G network interfaces using this method. (Those are called p4p1 and p4p2, and do not start with em.)

How can I rename the network interface name of my 10G network interfaces on RedHat EL 6.3?

Best Answer

As the section of the appendix you linked to states, it's strongly recommended to enable or disable the consistent network device naming feature at install time; doing so after installation is messy and not guaranteed to work, as you've discovered.

To do this, install the system passing biosdevname=0 on the boot command line when booting the installation media, and add the same parameter to the grub boot command line.

Since you've just installed the system anyway, this shouldn't be too big of a headache...

Related Solutions

Ubuntu second static IP, ifconfig, /etc/network/interfaces

Is Network Manager managing the interface? I have configured network manager not to touch the interfaces that I manage through /etc/network/interfaces by having the following in /etc/NetworkManager/NetworkManager.conf:

[ifupdown]
managed=false

When Network Manager is disabled for sure we can take a look at /etc/network/interfaces. Interface aliases are no longer recommended, but ip(8) can add more than one address to one interface. This can be done in /etc/network/interfaces as follows:

auto eth1
iface eth1 inet static
        address 192.168.178.2
        netmask 255.255.255.0
        gateway 192.168.178.1
        up ip addr add 192.168.178.3/24 dev eth1
        down ip addr del 192.168.178.3/24 dev eth1

Read the manpage of interfaces(5) and ip(8) for more information.

Debian – Multiple IP – different gateways – one interface – Debian Squeezy

I solved this.

/etc/init.d/interfaces:

auto lo eth0
iface lo inet loopback

auto eth0:0 eth0:1 eth0:2

allow-hotplug eth0
iface eth0 inet static
    address 31.133.MMM.47
    netmask 255.255.255.0
    broadcast 31.133.MMM.255
    network 31.133.MMM.0
    post-up route add default gw 31.133.MMM.1 metric 1
    pre-down route del default gw 31.133.MMM.1


iface eth0:0 inet static
    address 31.133.NNN.254
    netmask 255.255.255.128
    broadcast 31.133.NNN.255
    network 31.133.NNN.0
    post-up route add default gw 31.133.NNN.129 metric 2
    pre-down route del default gw 31.133.NNN.129


iface eth0:1 inet static
    address 31.133.KKK.254
    netmask 255.255.255.128
    broadcast 31.133.KKK.255
    network 31.133.KKK.0
    post-up route add default gw 31.133.KKK.129 metric 3
    pre-down route del default gw 31.133.KKK.129


iface eth0:2 inet static
    address 31.133.LLL.229
    netmask 255.255.255.0
    broadcast 31.133.LLL.255
    network 31.133.LLL.0
    post-up route add default gw 31.133.LLL.1 metric 4
    pre-down route del default gw 31.133.LLL.1

And it works!

Thank you all for your help!

Best Answer

Related Solutions

Ubuntu second static IP, ifconfig, /etc/network/interfaces

Debian – Multiple IP – different gateways – one interface – Debian Squeezy

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