Hi,
i'm a newbie, i have a RH 7.2, i have succesfully configured eth0 with this parameters

ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:14:38:50:46:6D
inet addr:10.0.0.1 Bcast:10.255.255.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:384 errors:3 dropped:0 overruns:0 frame:0
TX packets:234 errors:0 dropped:0 overruns:0 carrier:0
collisions:69 txqueuelen:100
RX bytes:107283 (104.7 Kb) TX bytes:159852 (156.1 Kb)
Interrupt:17 Memory:fddf0000-fde00000

how can i save this configuration ? when i reboot the system the interface is not active and it have no ip address assigned.

this is the device configuration script

# cat /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
IPADDR=10.0.0.1
NETMASK=255.255.255.0

you could add a line to the end of the /etc/rc.d/rc.local file to execute the script. however, bringing up the network interface is usually done with /etc/rc.d/rc.inet1 (i think its called).

as you said that you have made the neccessary arrangements in the file
you just need to have your NETWORK service started and it will do the rest

try this
"""chkconfig network on"""
and then check status of network on each runlevel by

"""chkconfig --list | grep network"""

here runlevels are denoted as numbers and status by ON/OFF

NETWORK SHOULD B ON AT 3 & 5 runlevels atleast

yours
anant