I am running a linux on a old desktop
It has two network cards

one which is on the motherboard which is 100 mbps and an additional new card 1 gbps

now the motherboard network card is assigned eth1 and the additional card is assigned eth0


I am trying to configure Oracle RAC on this Desktop and I need
eth0 to be the motherboard card

how do i change them.

Linux version is Centos 5.3 which is similar to redhat

I'm using CentOS 5.4 and I had same problem..

I did the following steps.

su -l
system-config-network &


clicked on hardware and deleted both eth devices, saved and exit.

turned my pc off, removed external eth.. which was assigned eth0

turned on my pc, now builtin network card was assigned eth0, checked for MAC binding... was all ready bind. turned off my pc.. installed external card.. booted system.....

problem was solved...

Cheers!!

This is what I did for the Centos 5.3 box (This method also works for RedHat

open a terminal window and issue the command
ifconfig

note the contents


go to administration/network
disable/deactivate both network cards

open a terminal window logged in as root.

vi /etc/sysconfig/network-scripts/ifcfg-eth0
vi /etc/sysconfig/network-scripts/ifcfg-eth1

take the following line


HWADDR=00:19:B1:2A:BA:B8

and swap the lines from ifcfg-eth0 to ifcfg-eth1

save the files and go back to the admin/network screen and activate both the cards


run the command ifconfig again and note the contents- now you will see the info has changed.....