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How do I set up Ifcfg-eth0?


How do I set up Ifcfg-eth0?

Set a Static IP Address

  1. Open the configuration file for the first network interface, eth0, into a text editor. vi /etc/sysconfig/network-scripts/ifcfg-eth0.
  2. Modify the configuration file to look similar to the one below.
  3. Save your changes and exit the text editor.
  4. Restart the network service.


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What is DHCP do?

A DHCP Server is a network server that automatically provides and assigns IP addresses, default gateways and other network parameters to client devices. It relies on the standard protocol known as Dynamic Host Configuration Protocol or DHCP to respond to broadcast queries by clients.

How do I set default gateway in Ifcfg eth0?

Another option to set a default gateway persistently on CentOS is to edit /etc/sysconfig/network-scripts/ifcfg- , and add GATEWAY= there. If the default interface is eth0 , you will need to edit /etc/sysconfig/network-scripts/ifcfg-eth0 .

Why does the ifcfg-eth0 file look different?

The values required in an interface configuration file can change based on other values. For example, the ifcfg-eth0 file for an interface using DHCP looks different because IP information is provided by the DHCP server:

What is the name of the ifcfg file?

Interface configuration (ifcfg) files control the software interfaces for individual network devices. As the system boots, it uses these files to determine what interfaces to bring up and how to configure them. These files are usually named ifcfg- name, where the suffix name refers to the name of the device that the configuration file…

Where are the ifcfg-ETHN files in sysconfig?

The /etc/sysconfig/network-scripts/ifcfg-ethN files File configurations for each network device you may have or want to add on your system are located in the /etc/sysconfig/network-scripts/ directory with Red Hat Linux 6.1 or 6.2 and are named ifcfg-eth0 for the first interface and ifcfg-eth1 for the second, etc.

How to configure static routes in ifcfg files?

Configuring Static Routes in ifcfg files 4.5.1. Understanding Policy-routing 4.6. Configuring the Default Gateway 5. Configuring Network Connection Settings 5.1. Configuring 802.3 Link Settings 5.2. Configuring 802.1X Security 5.2.1.