What can the ethtool command be used for?

What can the ethtool command be used for?

Ethtool is a Network Interface Card configuration command that allows you to retrieve information and change your NIC settings. These settings include Speed, Duplex, Auto-Negotiation, and many other parameters.

What is Phyad in ethtool?

–phyad. The –phyad option is used to change the physical address.

What is RX Usecs?

rx-usecs. Number of microseconds to delay an RX interrupt after packet arrival. If 0, only rx-max-frames is used.

How does ethtool work?

ethtool consists of two components, an API within the Linux kernel through which NICs can send and receive parameters through their device driver software, and a userspace API based on the Linux SIOCETHTOOL ioctl mechanism through which application programs can communicate with the kernel to send and receive NIC and …

How do I change my network card speed?

Modify the Ethernet Card Speed and Power Management

Right-click on Ethernet and then select Properties. Click Configure. Click the Advanced tab and set the Ethernet card Speed & Duplex settings to 100 Mbps Full Duplex. Note: The option in the Property field may be named Link Speed & Duplex or just Speed & Duplex.

How do I check my Ethernet card speed Linux?

How to Test Network Speed in Linux via CLI

1. Using speedtest-cli to Test Internet Speed.
2. Using fast-cli to Test Internet Speed.
3. Using CMB to Show Network Speed.
4. Using iperf to Measure Network Speed Between Two Devices.
5. Using nload to View Incoming and Outgoing Network Traffic.
6. Using tcptrack to Test Network Activity.

Is ethtool persistent?

Any change made with the ethtool program does not persist across reboots or network module (driver) reloads by default. Follow the steps given below to add the changes in such a way that they apply automatically at boot.

How do I enable auto-negotiation in ethtool?

For example, the command ethtool -s eth0 autoneg off disables auto-negotiation, but only temporarily. The driver will automatically re-enable auto-negotiation if the line speed and duplex settings are not specified in the command.

What is OpenOnload?

OpenOnload® is a high performance network stack from Solarflare that dramatically reduces latency and CPU utilization, and increases message rate and bandwidth. OpenOnload runs on Linux and supports TCP/UDP/IP network protocols with the standard BSD sockets API, and requires no modifications to applications to use.

What is adaptive Rx?

What is Adaptive rx/tx? Adaptive is designed to provide a balanced approach between low CPU utilization and high performance. However, you might try tuning interrupt settings manually to fit your use case. Range of 0-235 microseconds provides an effective range of 4,310 to 250,000 interrupts per second.

How do I get ethtool?

Installing ethtool
Open a terminal window. Issue the command sudo apt-get update. Install the app with the command sudo apt-get install ethtool. Allow the installation to complete.

How do I convert 100mbps to 1gbps?

The steps to follow are these:

1. In the window where the speed was indicated, click on properties.
2. Make sure that the Microsoft Network Client option is checked.
3. We click on configure.
4. We go to advanced options and look for Speed ​​& Duplex.
5. We have to change the value by 1.0 Gbps Full Duplex.
6. Press accept.

Why is my LAN limited to 100mbps?

The most common reason that the Ethernet status shows only 100 Mbps is that you are using a Cat5 or older Ethernet cable instead of the newer Cat5e or Cat6 cable. Cat5 cable supports only up to 100 Mbps, whereas a Cat5e cable can support up to 1 Gbps and Cat6 up to 10 Gbps.

How do I change Ethernet speed in Linux?

To change Speed and Duplex of an Ethernet card, we can use ethtool – a Linux utility for Displaying or Changing Ethernet card settings.

1. Install ethtool.
2. Get the Speed, Duplex and other information for the interface eth0.
3. Change the Speed and Duplex settings.
4. Change the Speed and Duplex Settings permanently.

How do I test my Ethernet speed?

Open Start. Search for Command Prompt and click the top result to open the console. Type the following command to determine the connection speed for all the Ethernet and Wi-Fi adapters and press Enter: wmic nic where netEnabled=true get name, speed.

How do I drop an interface in Linux?

Two methods can be used to bring interfaces up or down.

1. 2.1. Using “ip” Usage: # ip link set dev <interface> up # ip link set dev <interface> down. Example: # ip link set dev eth0 up # ip link set dev eth0 down.
2. 2.2. Using “ifconfig” Usage: # /sbin/ifconfig <interface> up # /sbin/ifconfig <interface> down.

How do I turn on auto negotiation?

To enable or disable auto negotiation
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.

What is kernel bypass?

Kernel-bypass networking eliminates the overheads of in-kernel network stacks by moving protocol processing to userspace. The packet I/O is either handled by the hardware, the OS, or by userspace, depending on the specific kernel-bypass architecture in use.

What is solarflare onload?

Solarflare Cloud Onload, a new application acceleration platform, was designed to improve data center efficiency and remove waste from today’s cloud infrastructure investments.

Should I disable priority and VLAN?

When this feature is enabled, tagged packets use the queue settings defined by the operating system Priority Level Definition. Priority & VLAN is automatically enabled when you set up a VLAN on the VLAN tab. You cannot disable tagging because tagging is required for VLANs.
…
Advanced Driver Settings for Intel® Ethernet 10 Gigabit Server Adapters.

Should I disable interrupt moderation?

Directly disabling interrupt moderation will give you the lowest possible latency. Of course, this will be bundled with a lower machine performance. For all the gamers out there, if you’re playing a multiplayer game and happen to have a powerful CPU, you should definitely disable interrupt moderation.

How do I get Devname ethtool?

To find that out, issue the command ifconfig. The device’s name will be listed in the left column (Figure A). Once you have the device name, issue the command sudo ethtool DEVNAME (DEVNAME is the actual device name).

How do I know if my NIC card is bad Linux?

check the dmesg log for messages about the NIC. confirm the configuration information on ifconfig for the NIC. use ethtool eth0 to confirm NIC’s healthy and functioning normally.

Why am I not getting 1gb Internet speed?

It’s possible that the computer or device you’re using to connect to the Internet is simply not built to handle a fast wireless network. From your Internet provider to your device, your speeds will only be as fast as the weakest, or slowest, link.

Is Ethernet faster than Wi-Fi?

To access a network via an Ethernet connection, users need to connect a device using ethernet cable. An Ethernet connection is generally faster than a WiFi connection and provides greater reliability and security.