Difference between revisions of "Ifconfig"
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* Show interface configuration in Linux including ip addresses: <code>ifconfig -a</code> or <code>ip a</code> | * Show interface configuration in Linux including ip addresses: <code>ifconfig -a</code> or <code>ip a</code> | ||
* Show interface Ethernet network capabilities of your interface, such as speed, with: <code>mii-tool -v YOUR_INTERFACE_NAME</code>, <code>mii-tool -v eth0</code> | * Show interface Ethernet network capabilities of your interface, such as speed, with: <code>mii-tool -v YOUR_INTERFACE_NAME</code>, <code>mii-tool -v eth0</code> | ||
| − | * [[Show all network | + | * [[Show all network interfaces in Linux]]:<ref>https://www.cyberciti.biz/faq/linux-list-network-cards-command/</ref> |
* Learn about [https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/networking_guide/ch-consistent_network_device_naming Linux Naming Schemes Hierarchy]. | * Learn about [https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/networking_guide/ch-consistent_network_device_naming Linux Naming Schemes Hierarchy]. | ||
Revision as of 13:55, 18 August 2020
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
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
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
ip[link, route],ifconfignetstatsslsofpingethtoolmii-toolarpingnmcli(RHEL)routenetworkctl,netplan,tcipconfigWindows command- macOS:
networksetup,ifconfig,ipconfig [ getifaddr ],scutil - bonding
- Eth
References
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