The ethtool command is used to display/change Ethernet adapter settings. You can change network card speed, auto-negotiation, wake on LAN setting, duplex mode using this tool in Linux.
How does ethtool change speed?
To change Speed and Duplex of an ethernet card, we can use ethtool – a Linux utility for Displaying or Changing ethernet card settings.
- Install ethtool. …
- Get the Speed, Duplex and other information for the interface eth0. …
- Change the Speed and Duplex settings. …
- Change the Speed and Duplex settings Permanently on CentOS/RHEL.
How do I check my ethtool link status?
How to check network adapter status in Linux
- The above command indicates that my Ethernet is up and running with 192.168. 2.24/24 IP address. …
- Run: sudo ethtool -i eno1.
- Run wavemon command to find out Wireless network speed, signal Strength and other information from the CLI: wavemon.
How do you check for duplex in Linux?
Linux LAN card: Find out full duplex / half speed or mode
- Task: Find full or half duplex speed. You can use dmesg command to find out your duplex mode: # dmesg | grep -i duplex. …
- ethtool command. Uss ethtool to display or change ethernet card settings. …
- mii-tool command. You can also use mii-tool to find out your duplex mode.
What is Iwconfig command in Linux?
iwconfig command in Linux is like ifconfig command, in the sense it works with kernel-resident network interface but it is dedicated to wireless networking interfaces only. It is used to set the parameters of the network interface that are particular to the wireless operation like SSID, frequency etc.
How do you set speed and duplex?
Configuring Speed and Duplex in Microsoft* Windows*
- Navigate to the Device Manager.
- Open Properties on the adapter you would like to configure.
- Click the Link Speed tab.
- Select the appropriate speed and duplex from the Speed and Duplex pull down menu.
- Click OK.
How do I use tcpdump?
Getting Started with tcpdump Command Examples
- Capture Packets from Specific Interface. …
- Capture Only N Number of Packets. …
- Print Captured Packets in ASCII. …
- Display Available Interfaces. …
- Display Captured Packets in HEX and ASCII. …
- Capture and Save Packets in a File. …
- Read Captured Packets File. …
- Capture IP Address Packets.
How do I turn on auto negotiation?
In the details pane, select the interface, and then click Open. Do one of the following in the Configure Interface dialog box: To enable auto negotiation, click Yes next to Auto Negotiation, and then click OK. To disable auto negotiation, click No next to Auto Negotiation, and then click OK.
How do I check Ethernet status?
Click the Start button, then click “Control Panel” and type “network status” in the search field at the top right of the window. Click “Network and Sharing” to see a readout of your current network status.
How do I know if my Internet connection is working Linux?
Check Internet is up ping google.com (checks DNS and known reachable site). Check web site is up use wget or w3m to fetch page.
…
If Internet is not up diagnose outward.
- Check gateway is pingable. (Check ifconfig for gateway address.)
- Check DNS servers are pingable. …
- Check to see if firewall is blocking.
How do I see all interfaces in Linux?
Linux Show / Display Available Network Interfaces
- ip command – It is used to show or manipulate routing, devices, policy routing and tunnels.
- netstat command – It is used to display network connections, routing tables, interface statistics, masquerade connections, and multicast memberships.