How To Set DHCP/Static IP Address in Centos/RHEL/Fedora & Debian/Ubuntu/Kubuntu/MEPIS Set DHCP/Static IP Address

Basically the two main types of distros are Debian and RHEL/Centos based.  I'm just going to give a quick overview of how the configuration of IP interfaces works in Debian/Centos based distros.

*Just one thing to remember, when setting IPs statically you have to manually specify a DNS server in /etc/resolv.conf (since DHCP is what normally does it automatically)

Debian/Ubuntu/Kubuntu/MEPIS

The IP (DHCP & Static) configuration is done from the following file: /etc/network/interfaces

Here is how the default DHCP configuration looks:

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
auto eth0
iface lo inet loopback

# The primary network interface
allow-hotplug eth0
iface eth0 inet dhcp

Here is an example of setting it statically:

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
auto eth0
iface lo inet loopback

# The primary network interface
allow-hotplug eth0
iface eth0 inet static
        address 192.168.1.147
        netmask 255.255.255.0
        gateway 192.168.1.1

 

How to Add Multiple IPs in Debian/Ubuntu

auto eth0:0

iface eth0:0 inet static

    address  192.168.1.148

    netmask 255.255.255.0

    gateway 192.168.1.1


auto eth0:1

iface eth0:1 inet static

    address  192.168.1.149

    netmask 255.255.255.0

    gateway 192.168.1.1

 

*Just one thing to remember, when setting IPs statically you have to manually specify a DNS server in /etc/resolv.conf (since DHCP is what normally does it automatically)

 

 


 

Centos/RHEL/Fedora/Mandriva

The IP (DHCP & Static) configuration is done from the following file : /etc/sysconfig/network-scripts/ifcfg-eth0

*Note the "eth0" at the end, each device has it's own entry within the network-scripts directory.

Here is how the default DHCP configuration looks:

# Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller
DEVICE=eth0
BOOTPROTO=dhcp
HWADDR=5A:G1:29:4A:1C:76
ONBOOT=yes

Here is an example of setting it statically:

DEVICE=eth0
BOOTPROTO=static
IPADDR=192.168.1.245
GATEWAY=192.168.1.1
NETMASK=255.255.255.0
ONBOOT=YES

*Just one thing to remember, when setting IPs statically you have to manually specify a DNS server in /etc/resolv.conf (since DHCP is what normally does it automatically)


Tags:

dhcp, static, ip, centos, rhel, fedora, debian, ubuntu, kubuntu, mepis, addressbasically, distros, overview, configuration, interfaces, ips, statically, manually, specify, dns, server, etc, resolv, conf, automatically, default, describes, activate, loopback, interface, auto, eth, iface, inet, primary, hotplug, netmask, gateway, multiple, mandriva, sysconfig, scripts, ifcfg, quot, entry, directory, realtek, semiconductor, ltd, rtl, pci, gigabit, ethernet, controller, bootproto, hwaddr, onboot, ipaddr,

Latest Articles

  • Linux Mint Ubuntu Debian CentOS Dual Boot Install Issues
  • Linux Mint Ubuntu Debian Centos RHEL no sound solution
  • Linux Mint/Debian/Ubuntu/Centos Installer black grub screen and blank screen after trying to boot installer or main OS
  • Linux Mint Dual Boot Install Avoid Wiping our your Main C: drive /dev/sda MBR
  • QEMU-KVM soundhw deprecated how to enable sound in QEMU 4.x series
  • Virtualbox Error Cannot register the hard disk because a hard disk with UUID already exists solution
  • kernel: [549267.368859] mate-terminal[7871]: segfault at 2000000101 ip 00007f5d0a9548f0 sp 00007fff7012c610 error 4 in libgobject-2.0.so.0.4800.2[7f5d0a920000+52000]
  • apcupsd how to setup and monitor APC UPS units
  • How To Password Reset, Recover, Bypass, Remove and Unlock on Windows 10,8,7,Vista,XP,NT,2000,2003,2008,2012,2016,2019 Administrative Login Programs
  • Nvidia Ubuntu Linux Screentearing Video with solution driver
  • ?? Question Marks for time, permissions and size of a file?
  • mdadm how to stop a check
  • access denied by acl file qemu-kvm: bridge helper failed
  • Linux NIC connecting at 100M instead of 1000M gigabit speeds? It could be overheating
  • "This kernel requires the following features not present on the CPU: cmov Unable to boot - please use a kernel appropriate for your CPU.
  • http://vault.centos.org/5.9/os/i386/repodata/filelists.xml.gz: [Errno -1] Metadata file does not match checksum solution
  • Linux Ubuntu Wifi Disabled Only Works When Laptop Plugged Into Wall AC Power
  • CentOS 6 impossible to compile a newer libguestfs
  • chroot
  • How To Get Started on Ubuntu with gpt-2 OpenAI Text Prediction