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how to change my ip address in centos 5

I need to change my ip address, DNS , gateway and subnet mask in my centos. How would I do it from command prompt.
Also what is broadcast ip?
thanks
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syedasimmeesaq
Asked:
syedasimmeesaq
1 Solution
 
bswinnertonCommented:
Give this a try:

http://www.linuxdynasty.org/configuring-ip-on-linux-from-the-command-line-redhatcentosfedora.html

And a broadcast IP is just an ip address with the last octet as 255.  For example 192.168.0.1 is your ip, your broadcast ip would be 192.168.0.255
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nahimeCommented:
if your interface is eth0 you need to modify the file:
/etc/sysconfig/network-scripts/ifcfg-eth0

See this link for reference:
http://www.centos.org/docs/5/html/Deployment_Guide-en-US/ch-networkscripts.html
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Deepak KosarajuSr. Monitoring Architect - Nagios/Op5 SME - ConsultantCommented:
use setup command to control the centos system setting
and selected Network Configuration
Gud luck
setup
(or) use
system-config-network if you are using GUI
(or) use
system-config-network-tui

Open in new window

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Hugh FraserConsultantCommented:
The broadcast address has the last octet set to 255 only if your netmask is 255.255.255.0. This is usually the case for home users (usually a class C address), but often not the case in a larger network (such as a class B or a subset thereof).

If you understand bitmasks, logical AND, etc. you can calculate the broadcast address. It's not hard. But it's even easier to reference one of the websites on the Internet that'll do it for you such as:

http://www.subnetmask.info/
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