OEL netwerk configuration

Sometimes a system has been initiated to use DHCP and the use of a static ip-address is required, including correct dns resolution and gateway settings.

The following steps accomplish this:

Define the parameters of the NIC

• Connect as root
• Go to directoy /etc/sysconfig/network-scripts
• Identify the file that is used for the NIC that you must define:
  
  for example ifcfg-eth0 is for the traditional first network card.
  
  
  
• Verify/Change the settings depending on your needs
• When changing from dhcp to static addressing, the file should become something like this:
  
  BOOTPROTO=static
  
  
  
  BROADCAST=192.168.1.255
  
  HWADDR=xx:xx:xx:xx:xx
  
  IPADDR=192.168.1.102
  
  NETMASK=255.255.255.0
  
  NETWORK=192.168.1.0
  
  ONBOOT=yes
  
  
  

Define the paramter for the network in itself

• Connect as root
• Go to /etc/sysconfig
• Edit the file network
• Set the hostname here and the gateway for the network.
• The file should contain something like:
  
  HOSTNAME=myservername
  
  
  
  GATEWAY=192.168.1.1
  
  
  

Set the resolv.conf file with the nameservers

• Connect as root
• Go to directory /etc
• Edit the file resolv.conf
• Add/modify lines in the file with the specification of the nameserver.
• An example
  
  search hellings.be
  
  
  
  nameserver vvv.xxx.yyy.zzzz
  
  
  
• Add as many nameservers as you require

Restart the network

• Connect as root
• Restart the network
  service network restart