Difference between revisions of "Ifconfig"
| Line 9: | Line 9: | ||
=== Linux alias === | === Linux alias === | ||
ifconfig [[eth]]0''':0''' 192.168.1.6 up | ifconfig [[eth]]0''':0''' 192.168.1.6 up | ||
| + | |||
| + | |||
| + | ifconfig eth3:0 | ||
| + | eth3:0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 | ||
| + | inet 192.168.1.6 netmask 255.255.255.0 broadcast 192.168.1.255 | ||
| + | ether 33:54:00:7d:35:22 txqueuelen 1000 (Ethernet) | ||
=== [[macOS]] [[alias]] === | === [[macOS]] [[alias]] === | ||
Revision as of 09:09, 16 February 2021
ifconfigis a command in Unix-like operating systems like Linux[1], FreeBSD, OpenBSD, macOS for Ethernet network interface configuration.
In macOS, the ifconfig command functions as a wrapper to the IPConfiguration agent, and can control the BootP and DHCP clients from the command-line. Use of ifconfig to modify network settings in Mac OS X is discouraged, because ifconfig operates below the level of the system frameworks which help manage network configuration. To change network settings in Mac OS X from the command line, use /usr/sbin/ipconfig or /usr/sbin/networksetup.
ifconfig command is included in the net-tools package but not installed by default in RHEL since version 7[2].
Contents
Configuring an alias IP
Linux alias
ifconfig eth0:0 192.168.1.6 up
ifconfig eth3:0
eth3:0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.6 netmask 255.255.255.0 broadcast 192.168.1.255
ether 33:54:00:7d:35:22 txqueuelen 1000 (Ethernet)
macOS alias
Configure 3 alias in en1 interface, https://ss64.com/osx/ifconfig.html:
sudo ifconfig en1 inet 192.168.10.2/24 add sudo ifconfig en1 inet 192.168.20.2/24 add sudo ifconfig en1 inet 192.168.30.2/24 add
or
sudo ifconfig en1 inet 192.168.10.2/24 alias sudo ifconfig en1 inet 192.168.20.2/24 alias sudo ifconfig en1 inet 192.168.30.2/24 alias
Remove/delete alias:
sudo ifconfig en1 inet 192.168.10.2/24 delete
ifconfig eth# up or ip link set eth0 up
Activities
- Show interface configuration in Linux including ip addresses:
ifconfig -aorip a - Show interface Ethernet network capabilities of your interface, such as speed, with:
mii-tool -v YOUR_INTERFACE_NAME,mii-tool -v eth0 - Show all network interfaces in Linux:[3]
- Learn about Linux Naming Schemes Hierarchy.
- Change your MAC address:
ifconfig {eth0|wlan0} hw ether CA:CA:CA:CA:CA:CA
Related terms
docker inspect CONTAINER_NAME | grep IPAddress
See also
- Linux networking: Consistent Network Device Naming (eth, ens), DPDK, Alias IP, bonding, Wlan0,
ip[link, route],ifconfignetstatsslsofpingethtoolmii-toolarpingnmcli(RHEL)routenetworkctl,netplan,tc ipconfigWindows command- macOS:
networksetup,ifconfig,ipconfig [ getifaddr ],scutil - bonding
References
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