/etc/sysconfig/network-scripts/ifcfg-eth0 HowTo - Linux / Unix Q & A from nixCraft

How to configure a static IP address on CentOS 7 / RHEL 7

last updated November 22, 2018 in CentOS, Networking, RedHat and Friends

I am a new sysadmin and CentOS user. My system is configured to use DHCP. How can I switch from DHCP to static IP address configuration in a CentOS 7 desktop system? How do I setup a static TCP/IP address on my CentOS Linux 7 or Red Hat Enterprise Linux 7 server using command line option?

Linux Static IP Address Configuration

last updated April 23, 2011 in Debian / Ubuntu, Linux, Networking, RedHat and Friends

How do I configure the Internet Protocol version 4 (IPv4) properties of a network connection with a static IP address for servers running Linux operating systems? How do I configure static IP address under Debian Linux or Redhat / RHEL / Fedora / Redhat Enterprise Linux server?

Linux Display Ethernet Bridge Name and Information

last updated March 21, 2011 in Linux, Networking, RedHat and Friends

How do I display a list of bridges under Linux? How do I show info about the Ethernet bridge configuration in the Linux kernel?

Redhat Linux Network Interface Configuration (NIC) File Location

last updated January 19, 2011 in CentOS, Fedora Linux, RedHat and Friends

Where are NIC (network interface configuration) files located in the Redhat / Fedora / Centos Linux?

Linux MTU Change Size

last updated October 22, 2009 in BASH Shell, CentOS, Debian / Ubuntu, Hardware, Linux, Networking, RedHat and Friends, Suse, Ubuntu Linux

We’ve gigabit networks, and large maximum transmission units (MTU) sizes (JumboFrames) can provide better network performance for our HPC environment. How do I change MTU size under Linux?

Red Hat / CentOS Add IPv6 Network Alias (multiple IPv6 IP to Same NIC)

last updated January 25, 2009 in CentOS, Fedora Linux, Iptables, Linux, Networking, RedHat and Friends, Ubuntu Linux

Q. How do I add multiple IPv6 address to eth0 under Red Hat / Fedora / RHEL / CentOS Linux for virtual hosting?

Red Hat / CentOS: Swap / Change Ethernet Aliases

last updated January 14, 2009 in CentOS, Linux, Networking, RedHat and Friends, Troubleshooting

Q. My Ethernet aliases are randomly switched and they are bound to the wrong interface. My eth0 became eth1 and eth1 become eth0. This is causing all sort of trouble for services and firewall configurations. How do I swap back and make sure Ethernet aliases works correctly under CentOS Linux server?