It's common for users of desktop Linux or servers with a graphical interface to use Network Manager GUI clients to configure the network. Network Manager runs as a daemon, and its goal is to provide a higher-level interface to make network configuration easier and more automated. Network Manager is a network configuration application available by default with many Linux distributions, including RHEL and Fedora. Next, let's take a look at the Network Manager configuration tool nmcli, which provides an integrated way to configure the network. For this reason, many distributions provide a higher-level interface to accomplish the same task. While it's useful as a troubleshooting tool, it may be harder to set the network with it. The ip command is a lower-level interface to configure network options on your Linux system. Show the IP address of a single interface e.g., enp1s0: $ ip a show dev enp1s0Īdd another IP address to an interface (requires sudo or root user): $ sudo ip a change 192.168.122.170 dev enp1s0ĭefault via 192.168.122.1 dev enp1s0 proto static metric 100ġ92.168.122.0/24 dev enp1s0 proto kernel scope link src 192.168.122.169 metric 100Īdd a route (default gateway): $ sudo ip route add default via 192.168.122.1 dev enp1s0 Show the IP addresses of all interfaces: $ ip aġ: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000Ģ: enp1s0: mtu 1500 qdisc fq_codel state UP group default qlen 1000 TX: bytes packets errors dropped carrier collsns RX: bytes packets errors dropped overrun mcast Show network statistics -s in human readable format -h for a specific network interface: $ ip -s -h l show dev enp1s0
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You can see a full list of objects and commands by running ip help.
Link/ether 52:54:00:b5:c7:2b brd ff:ff:ff:ff:ff:ffīecause show is the default subcommand, you can also obtain the same result by running ip link or even ip l (many objects recognize an abbreviation).
If you do not give a subcommand, many objects default to the show subcommand to display information related to that object.įor example, to see the link status on all network devices, run ip link show: $ ip linkġ: lo: mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 In its most basic form, you can just run ip and provide a network object to manipulate, such as an address, link, or route, and a subcommand to perform an action. The ip command replaces the functionality of many commands provided with the old net-tools package such as ifconfig, route, and arp, but it adds many other features. It's a useful tool to configure the network, as well as to troubleshoot network connectivity issues. The ip command is an all-around utility to show and manipulate network objects on your Linux system, including IP addresses, routes, and ARP tables. However, when dealing with connectivity issues, using the right tools will assist you in achieving the results in a faster and consistent way. Networking configuration and troubleshooting are crucial tasks that sysadmins need to perform regularly. Linux system administration skills assessment.A guide to installing applications on Linux.
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