Tag Archives: eth0

Changing network configuration on Linux

This procedure can be used to change anything related to your network card configuration and have that change be persistent on system reboot.

  1. Logon as the root user
  2. Change directory to /etc/sysconfig/network-scripts

 [root@oel1 ~]# cd /etc/sysconfig/network-scripts

[root@oel1 network-scripts]#

3. VI the file ifcfg-eth0 and make the changes you wish.   In the example below, we edited the IPADDR variable to value of 192.1638.1.220

DEVICE=eth0

HWADDR=08:00:27:8F:E8:7D

TYPE=Ethernet

UUID=3138ac97-98ca-40fe-b24a-adea56ab46a9

ONBOOT=yes

NM_CONTROLLED=yes

BOOTPROTO=static

BROADCAST=192.168.1.255

IPADDR=192.168.1.220

NETMASK=255.255.255.0

  1. Stop the network service

 service network stop

5. Start the network service

service network start

6.   See the new configuration detail of eth0 with ifconfig command.

[root@oel1 ~]# ifconfig eth0

eth0      Link encap:Ethernet  HWaddr 08:00:27:8F:E8:7D

          inet addr:19.168.1.220 Bcast:19.168.1.255  Mask:255.255.255.0

          inet6 addr: fe80::a00:27ff:fe8f:e87d/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:16595 errors:0 dropped:0 overruns:0 frame:0

          TX packets:659 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:3986311 (3.8 MiB) TX bytes:98819 (96.5 KiB)

 

[root@oel1 ~]#

 

Larry Catt