Linux: CentOS 6.3 - Force DHCP client to renew ip address

Here are a few commands that I used to renew the ip address that has DHCP configured.

1. ifdown and ifup command to restart network card eth0 as follows :-

# ifdown eth0
# ifup eth0

2. Restarting the networking services command :-

# /etc/init.d/networking restart

3. Restart network service using service command :-

# service network restart

4. This command is for releasing the ip address :-

# sudo dhclient -r

This command is for getting a ip address :-

# sudo dhclient