Linux 7 Configuring a Network Interface: Difference between revisions
Jump to navigation
Jump to search
| Line 57: | Line 57: | ||
NETMASK="255.255.0.0" | NETMASK="255.255.0.0" | ||
PREFIX="16" | PREFIX="16" | ||
HWADDR="08:00:27: | HWADDR="08:00:27:CD:3F:EE" | ||
</pre> | </pre> | ||
Revision as of 03:10, 4 April 2017
External
Internal
Overview
The configuration files corresponding to the network interfaces are located in /etc/sysconfig/network-scripts.
ifcfg-eth0 example:
DEVICE="eth0" NAME="eth0" TYPE="Ethernet" ONBOOT="yes" IPADDR="192.168.1.9" NETMASK="255.255.255.0" PREFIX="24" GATEWAY="192.168.1.1" DNS1="192.168.1.1" BOOTPROTO="none" DEFROUTE="yes" IPV4_FAILURE_FATAL="no" IPV6INIT="yes" IPV6_AUTOCONF="yes" IPV6_DEFROUTE="yes" IPV6_FAILURE_FATAL="no" IPV6_PEERDNS="yes" IPV6_PEERROUTES="yes" IPV6_PRIVACY="no"
Configuration
IPADDR
NETMASK
PREFIX
UUID
HWADDR
Specifying the hardware or MAC address using the HWADDR directive will influence the device naming procedure.
DEVICE
Change the IP Address
IPADDR="172.20.1.3" NETMASK="255.255.0.0" PREFIX="16" HWADDR="08:00:27:CD:3F:EE"
Configure a Network Interface after Cloning a VM Image
You want to generated a different Mac address when cloning an image, to avoid collisions.
If "HWADDR" is set pointing to the old hardware address, we want to remove it from the cloned configuration file, because if it stays there, and the hardware address is not available, the interface won't start.