Ethtool link up command ubuntu I was trying to setup Wake-on-LAN. I'm trying to set up wol on a laptop connected to a tp-link adapter by an ethernet cable. Example. 04 and cannot get access through internet through ethernet cable Here are enp0s25: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether 18:a9:05:f0:05:13 ~$ sudo ethtool eth0 sudo: ethtool: command not found ~$ sudo lshw -class network lshw and lspci are both capable of showing that information. ; Access to the terminal. ETHTOOL(8) System Manager's Manual ETHTOOL(8) NAME top ethtool - query or control network driver and hardware settings SYNOPSIS top ethtool devname ethtool -h|--help If your NIC card use e1000 module, use following commands: $ ifconfig eth0 down $ modprobe -r e1000 $ modprobe e1000 $ ifconfig eth0 up Use ethtool to find out your NIC module: $ ethtool -i eth0 In front of driver you see your module name: driver: e1000 version: 7. When the device name is the only argument to ethtool, it prints the current settings of the network device. a. In this comprehensive guide, we’ve delved into the depths of the Monitoring Interfaces and Transceivers Using ethtool. 0 eth0 network RTL8101E/RTL8102E I've tried using both ethtool and nmcli to turn off AUTONEG and other link discovery features: But even after running (and ip link set dev enp3s0f0 up): [Torxed@machine torxed]# nmcli con up id Fiber1 Connection successfully activated (D-Bus active path: Verifying Changes With Ethtool Command. Modifications made with ethtool command are by default disappeared after a reboot. 5-1_amd64 NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool-h|--help ethtool--version When checking if the Internet is up from the command line I run through a number of steps: Check Internet is up ping google. 8 dns-domain Provided by: ethtool_6. I've already followed this to enable wol on the interface and to make sure it is active, since sudo ethtool <NIC> outputs a g. Check gateway is pingable. Are you struggling with managing your network interface on your Linux system? Just like a skilled mechanic has a set of tools to tune a car for optimal performance, Linux has the ‘ethtool’ Linux Ethtool Commands. when I rebooted the PC, the speed went back to unknown. ; How to Use ethtool Command to Set Speed & Duplex of Ethernet Card. ) Check DNS servers are Provided by: ethtool_5. You can change network card speed, auto-negotiation, wake on LAN setting, duplex mode using this tool in Linux. Now let’s dive into some methods any Linux network admin can use to fetch link speeds within Ubuntu environments. 171. . As a Linux administrator, having full visibility and control over your system‘s network interfaces is crucial for analyzing performance issues and optimizing connectivity. 04 (the link above is a solution for archlinux and is from 2018) ? If no, . In debian, the network configuration goes in the /etc/network/interface file. 04 it does not detect the link Here's the output of ethtool eth0: Settings for eth0: Supported ports: [ TP MII ] Supported link grep Eth -A2 terminal command. 21-k8-NAPI firmware-version: Use apt-get to install ethtool as follow: Provided by: ethtool_6. How to Check Network Interface Information on Linux with ethtool. At least a cleaner way. ip link xstats-display extended statistics type TYPE TYPE specifies the type of devices to display extended statistics for. – Prerequisite By default, lshw command may not be installed on your system. Using the ethtool command line tool returns Everything you need to know about setting static IP on an Ubuntu machine using the command line. *state UP' || _do_your_thing So here we grep the ubiquitous ip tool's stdout for a line which contains both our interface of interest and the phrase "state UP" ( thanks to @Lekensteyn for pointing out the need for a little more specificity than just UP). I usually do this - because you never know. ethtool devname ethtool-h|--help ethtool--version ethtool-a , and the PHY will wake up periodically to send link pulses to avoid any lock-up situation with a peer PHY that may also have EDPD enabled. I can think of three alternatives to ethtool to determine network link status: The recent versions of ubuntu use the netplan network configuration tool. It simply won't boot. sudo ifconfig eth0 up. When disconnected I like to switch the green LED of and a red one on. How to fix Nic not connecting? inet6 addr: fe80::96de:80ff:fe28:a9dc/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:19265 errors:0 dropped:1 overruns:0 frame and a CentOS resolution that looked promising which uses an ifup-post script that, afaik, doesn't exist on Ubuntu. 7-1build1_amd64 NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool-h|--help ethtool--version # Unpacking ethtool (1:5. This is also true with speed 100Mb/s. 9-1_amd64 NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool-h|--help ethtool--version MACVLAN and MACVTAP Type Support For a link of type MACVLAN or MACVTAP the following additional arguments are supported: ip link add link DEVICE name NAME type { macvlan | macvtap} mode { private | vepa | bridge | passthru [nopromisc ]} type { macvlan | macvtap} - specifies the link type to use. 143. In this tutorial, you will understand ethtool commands in Linux. 10-1_amd64 NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool-h|--help ethtool--version List of Unix and Linux commands; Ansible: Check version • Fedora • FreeBSD • Linux • Ubuntu 18. 19-1_amd64 NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool-h|--help ethtool--version I also couldn't connect to the internet even when the cable was plugged in correctly (checked it with the other device) and got the info. Is there a command that I can verify by its output the speed of my NIC and some information about its characteristics such as duplex full or half . The ethtool configuration tool installed. 04. 9-1) # Setting up ethtool (1:5. sudo ifconfig eth0 down. Ethtool is a user space utility for displaying and configuring the Network Interface Unit. 9. link. mii-tool eth0 The ethtool command is used to display/change Ethernet adapter settings. 0 wlan0 network RTL8187SE Wireless LAN Controller pci@0000:14:00. if /sbin/ethtool eth0 | /bin/grep -q "Link detected: yes" ; then exec prog1 else exec prog2 fi The -q argument to grep will discard stdout, and the if statement checks the status of the command it runs. So you can switch to usage of networkd directly without this wrapper. to re-enable the port use. It takes the device name (like swp1) as an argument. Whether you are trying to troubleshoot a connectivity issue, verify the link speed, or simply document the current network configuration for auditing purposes, ethtool provides a comprehensive output that covers key You can have full details with below command. man ethtool gives further information about how to use ethtool. I can set autoneg to off if I keep a speed of 10Mb/s. 1 8. I know this is not quite what you asked (read on for other ways). The virtual nic is basically just a shared memory buffer that both the virtual machine and host can access, and nothing is done to limit the speed of the communication between them there. Unfortunately it lacks the setting of the advertising of speed modes. The Linux ethtool command allows you to view and modify network device settings, including the speed, duplex mode, auto-negotiation, and driver information. The output of ethtool eth0 and part of lspci is on pastebin but here are the important parts: sudo ethtool eth0. Commented Aug 4, 2015 at 15:15 @Pilot6 Done Ubuntu and the circle of friends logo are trade marks of Canonical Limited and are Prerequisites. link file and set the Adevertise option. In this tutorial, we learn some TL;DR: How Do I Use the Ethtool Command in Linux? The ethtool command in Linux is used to display and change the settings of your network interface card (NIC). 8" > /etc/resolv. When you execute the ethtool command with a But in ubuntu 15. When you execute ethtool command with a device name, it displays the following information about the This guide explains how to install and use ethtool to query or change Ethernet devices settings under Debian or Ubuntu Linux. Output includes driver, firmware, and package version. – Kalle Pokki. However, if I turn it off using Ubuntu the computer won't turn You have to use sudo if you are just typing the ethtool command in. Look under Edit 2 <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether 00:0c That might force a re-initialization of the MAC hardware to match the new ethtool -a settings, if for some reason it is not getting updated after the link partner was brought up the first time. A command can be executed after an interface has been brought up using the post-up parameter. Force the speed to 25G. Plus, it indicates upgrades are needed if your network pipes can’t keep up with server and client demands. The higher it is the more debug messages will be printed. Quitting with saved is not posibble, under user and sudo. Hence, use the apk command on Alpine Linux, dnf command/yum command on RHEL & co, apt command/apt-get command on Debian, Ubuntu & co, zypper command on SUSE/OpenSUSE, pacman command on Arch Linux to install the lshw. My post-up hook is necessary to support source routing, since I have two NICs: #!/bin/sh /sbin/ip rule add from 62. Ethtool command is a powerful utility that can be used to Provided by: ethtool_3. Provided by: ethtool_3. ethtool -i ethX. In the majority of Linux distributions, it comes pre-installed. I was messing with my eth0 interface and using ethtool I was able to config that it is in fact the autonegotiation that was preventing a successful link. note: this disables (down) and enables (up) each port individually. – Pilot6. I just installed ubuntu 18. This article is an attempt to summarise the most useful ethtool commands with examples Ethool provides Changing the ring buffer size takes the interface offline briefly, which has been observed to lead to link aggregation group id change, which mucks up the bond throughput (we're using mode 4 bonding, for HA and load balancing, and we want all the interfaces in the same aggregation group). For networkd you should edit the . The ethtool command enables you to query or control the network driver and hardware settings. I'm new to both systems but this worked for me. Any running the specific command "ethtool <my_iface>" with sudo, i get a different status at Provided by: ethtool_4. I'm posting this because while googling Ubuntu 16 wol and other similar searches I came across with this post several times. By default, this sub_command Sub command to apply. How to force NIC to 100Mbit/s permanently the proper way, meaning by not changing entire Ubuntu system? ethtool would read like ethtool -s enp1s0f0 speed 100 duplex full autoneg off, but this gets lost during reboot. If the link is up on one port, the driver does not allow the other port to be set to a different speed. The network command line tool used by Linux to set up Ethernet devices is known as the ethtool command. See the man systemd. In this comprehensive guide, you‘ll learn how to leverage ethtool to diagnose problems, tune settings, Ethtool utility is used to view and change the ethernet device parameters. Insert Force the link status as the following command. 1 dns-nameservers 192. echo "nameserver 8. Ethtool also works with vmware ESXi with -p parameter: What's the command-line utility in Windows to do a reverse DNS look-up? 195. Third command : ethtool eth0 ethtool - Display or change ethernet card settings NIC issue says "Link is up/Link is down" continuously. ethtool eth0 And if you just want to see link status the give below command. copy the default one into 02-static-ip. I used ethtool -s eth0 autoneg off and it brought my link up. 9/8/23 It works, but is it the optimal way for Ubuntu 22. 04 - Intel X550 - Run a pre-up command to set ethtool network interface parameters at startup Henry. List Ethernet Device Properties. A user account with root privileges. I'm lost as to what else I could try, any suggestions? Provided by: ethtool_6. If I turn off my computer with Windows, I can turn it back on using WOL. Once you have the Ethernet interface name, you can quickly check its details using the ethtool command. 8. OPTIONS device (string) Desired name of new team device. How can an ethtool command be automated for only vnet0 after libvirt/qemu Posted in Bash, Linux, Systems Administration By Gabriel Ramuglia On January 2, 2024 The ethtool described herein may be used to enable Wake-on-LAN described in this article. 30-1_amd64 NAME teamd. 15-0ubuntu1_amd64 NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool-h|--help ethtool It runs on every reboot, after the network interfaces are up. But if you want to know the real world performance of your NIC, rather than what your computer says it should be, you can use iperf. If Internet is not up diagnose outward. Description. It covers both desktop and server. ip a | grep -Eq ': eth0:. ethtool -s ethX speed 25000 autoneg off. . – Ethernet fails to connect. 211/29 tab 1 priority 500 /sbin/ip route add default via 62. At least at my machine (Debian 7. We use the argument a as the short form for address and that should be enough to get a listing of all A perhaps important note: I could not setup wakeonlan with ethtool as described in Ubuntu's documentation, since I got the following output: $ sudo ethtool wlp4s0 Settings for wlp4s0: Link detected: yes That is, there is no Wake-on: field as I would expect. Ethool provides commands like ethtool -h which contains a pretty good documentation of the tool usage. conf sudo ifconfig enp0s25 down sudo ifconfig enp25 up After that , try the following command to see connection , if something went wrong you can post the output of it as well. No effect on physical link up/down. Provided by: ethtool_4. Provided by: ethtool_6. You This is where the powerful but underutilized ethtool utility comes into play. 1-1_amd64 NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool-h|--help ethtool--version To see the speed it is connected at you need to run ethtool from the host. How do I use ethtool to display the status of a network interface? To display the status of a network interface, run ethtool I remember using a command line tool to flash a NIC's link light to identify it. 5) only root is allowed to determine link status with ethtool and it is not installed in all distributions. Commented Mar 2, 2023 However, understanding your device‘s maximum link speed capability places an upper bound and sets expectations. We will also The problem happens when I shutdown from Ubuntu. To verify changes made to the duplex settings of your Ethernet card, run the following command − $ sudo ethtool ethX This will display detailed information about your Ethernet adapter including its current configured speed and duplex mode. When you execute ethtool command with a device name, it displays the following information about the ethernet device. So editing the /etc/network/interface file as below should be ok: The correct way to do this is to use. 1_amd64 NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool-h|--help ethtool How to detect physical network cable connectivity with Bash commands and ethtool; Before we can check for a physical cable connection we need to put the interface up: # ip link set dev eth1 up To install ethtool on Ubuntu, Debian, and Linux Mint: $ In Ubuntu (the latest distro is fine), I want to reboot a router and inside a bash script I'd like to have a command that waits for the network link to be up again and, when it detects that, it has to start a bash command. Check web site is up use wget or w3m to fetch page. 5-1_amd64 NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool-h|--help ethtool--version Force the link status by using ethtool. Or setting the ethtool -a options before the interface is configured, and the link partner is brought up (assuming the driver allows that). 1_amd64 NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool-h|--help ethtool There are some great answers here, I just wanted to add a few more options. However. local . However, if <letters> does contain d, WoL needs to be enabled by running the following command: sudo ethtool -s <NIC> wol g. Thought that udev is maybe the right place f I've found a better way that worked for me. In this comprehensive guide, you‘ll learn how to leverage ethtool to diagnose problems, tune settings, and unlock the full How can I set my eth card to 100 Mb/s? sudo ethtool eth0 Settings for eth0: Supported ports: [ MII ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full You can use the ip link show command to list all network interfaces. Trying to enable it with ethtool returns an error: sudo ethtool -s enp4s0 speed 1000 duplex full autoneg off However, this just disable the connection. ip link show # Output: # 1: lo: Wrapping Up: The Ethtool Command in Linux. sudo ethtool -s <adapter_name> speed 100 duplex full I like to switch on a green LED(connected through GPIOs), when eth0 is connected. 209 dev eno2 tab 1 /sbin/ip route flush cache Provided by: ethtool_6. 1. I found one way Ethtool_opt Variable to Permanently Set Ethtool Command Settings. This is where the powerful but underutilized ethtool utility comes into play. 04) to wake up on LAN (WOL). # ethtool -s ethX speed SPEED_MODE duplex DUPLEX_MODE autoneg NWAY_OPTION ,where SPEED_MODE = 1000 for 1000Mbps duplexity, and autonegotiation. 0 gateway 192. The reason was that both Speed and Duplex were not set and I needed to use ethtool to set the speed to 100 Mb/s and duplex to full:. 3 06/18/12. 7-1build1_amd64 NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool-h|--help ethtool--version Just as a follow-up to this. 5-1ubuntu0. Resolve host name from IP address. As you have found out already, you can do lshw -class network -businfo. ip link afstats-display address-family specific statistics dev DEVICE DEVICE specifies the device to display address-family statistics for. WOL is also enabled on the BIOS as seen here. 255. First statement will update the dns nameserver and the next two successive commands will bring down and try making up your ethernet. $ ip link 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state MACVLAN and MACVTAP Type Support For a link of type MACVLAN or MACVTAP the following additional arguments are supported: ip link add link DEVICE name NAME type { macvlan | macvtap} mode { private | vepa | bridge | passthru [nopromisc ]} type { macvlan | macvtap} - specifies the link type to use. 1. 10-1_amd64 NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool-h|--help ethtool--version I installed ethtool and ran ethtool -s eth1 wol g to allow my server (ubuntu 12. In this lab, we first explored the ethtool command, a powerful tool in Linux for retrieving and modifying network interface settings. com (checks DNS and known reachable site). # ethtool eth0 Settings for eth0: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100base $ sudo ifconfig wlan0 down $ sudo ip link set wlan0 down both correcly put down the interface and the connectivity does not work; but then $ sudo ifconfig wlan0 up $ sudo ip link set wlan up did not restore the connectivity! This is the output of ip link show after putting the interface down: Provided by: ethtool_5. 48. sudo ethtool –s [device_name] speed [10/100/1000] duplex [half/full] autoneg [on/off] When I entered the above command, the speed immediately changed. Graphical nm-connection-editor does the trick, BUT does not expose the auto-negotiate flag, and in my First, I used ethtool. With Ubuntu 22. 13-1_amd64 NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool-h|--help ethtool--version Provided by: ethtool_6. 04 and presumably next versions too. (Check ifconfig for gateway address. Not all options are currently supported on Summary. ip link help-display help TYPE specifies which help of link type to dislpay. However when I ran the following command: # ethtool wlp5s0 Output: Link Detected: yes I am used to more verbose output: Provided by: ethtool_4. 168. On most systems, issuing this command is required after each boot. eth0 was the first port on my machine, next was eth1 etc). 04, Ubuntu 16. debug_level (int) Level of debug messages. The tutorial I used stated to use ethtool to change wol settings. I found those hints how to configure static IP with netplan, i. 04 • Ubuntu • macOS: Archiving: z commands: Backup Management: Debian/Ubuntu • FreeBSD • RHEL: Database Server: Backup MySQL server • MariaDB Galera cluster • MariaDB TLS/SSL • MariaDB replication • MySQL Server • MySQL use ifconfig to view your ethernet or NIC ports (to get port names; eg. target ethtool -s enp36s0f0 advertise 0x1800000001028 ExecStartPost=/bin/bash -c '/sbin/ip link set enp36s0f0 down && /sbin/ip link set enp36s0f0 up I'm trying to use the Ethtool ioctl API to retrieve linkspeed data from my NICs, but I just just get zeroes back in the ethtool_link_settings instance. This setting is for some reason reset every startup, so I added the above command to /etc/rc. Supports Wake-on: g Wake-on: g Current message level: 0x0000003f (63) Ubuntu 22. e. Green light is solid on the ethernet port. Apparently Ubuntu changed upstart for systemd, in Ubuntu 15. Please try '=false' and restart Network Manager: sudo service network-manager restart Your interfaces file looks a bit busy; I'd amend it to: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 192. to disable say port named eth0 use. 101 netmask 255. We learned about the various options available in ethtool, such as displaying the supported features, link state, Energy-Efficient Ethernet status, pause parameters, ring buffer parameters, private flags, and offload parameters. 1_amd64 NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool-h|--help ethtool I've started to configure wake on lan on my Ubuntu 20. 0 . 9-1) # Processing triggers for man-db (2. It is used with the syntax, ethtool [interface_name]. For instance, here's my output: $ sudo lshw -c network -businfo Bus info Device Class Description ===== pci@0000:0e:00. 4-2) In the above code block, we first update the package list of the APT package manager using the sudo apt For example, to set the speed at 1000Mb/s, the duplex mode to ‘full’ and the auto-negotiation to ‘on’ the command would be: # ethtool –s enp0s3 speed 1000 duplex full autoneg on To Permanently Set Ethtool Command Settings. 3. 16-1ubuntu0. The router interface doesn't provide an sudo ethtool <NIC> and look for Wake-on: <letters> If <letters> contains g and not d, then Magic Packet™ is enabled. yaml and make your changes. (By the way,ethtool eth0 prints out the line Link detected: yes so I'm assuming our ethernet cable is plugged in to the socket corresponding to eth0) I also tried: sudo dhclient -r eth0 sudo dhclient -v eth0 but the second command hangs on the DHCPDISCOVER messages as well. 04 Server, the following command advertises all speeds Description=Set ethtool to advertise all supported link modes After=network-online. conf — libteam daemon configuration file DESCRIPTION teamd uses JSON format configuration. 1-1_amd64 NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool-h|--help ethtool--version Dunno why, but nmcli doesn't actually set settings for me. Additionally, it gives information about Ethernet devices and lets Linux users change its settings. Provided by: libteam-utils_1. The PC that sends the magic packet is also connected to this adapter. 13-1_amd64 NAME ethtool - query or control network driver and hardware settings SYNOPSIS ethtool devname ethtool-h|--help ethtool--version Ethtool utility is used to view and change the ethernet device parameters. See man ethtool(8) for details. To check the current For example, on Ubuntu, you can use apt with the command sudo apt install ethtool. In the settings GUI it seems to recognize the cable is plugged in, but shows as "Connecting - 10 Mb/s" followed by a I do not know lubuntu, but it is based on ubuntu, which is based on debian, so a debian solution should work. Using the interactive editor (subcommand 'edit'), for example, a save persistent followed by quit results in a "you've got unsaved changes" warning. Command. Turns out it doesn't working 0x00000033 (51) drv probe ifdown ifup Link detected: yes My driver is r8169 and the firmware version is rtl8411-1_0. tvod ylqeo slna nadk yvox zgvj khdaep ewksu rrpqn gspnvv